ADD week 5
This commit is contained in:
274
02-Easy5/E5/sources/androidx/viewpager2/R.java
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274
02-Easy5/E5/sources/androidx/viewpager2/R.java
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package androidx.viewpager2;
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/* loaded from: classes.dex */
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public final class R {
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public static final class attr {
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public static final int alpha = 0x7f03002e;
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public static final int fastScrollEnabled = 0x7f0301d3;
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public static final int fastScrollHorizontalThumbDrawable = 0x7f0301d4;
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public static final int fastScrollHorizontalTrackDrawable = 0x7f0301d5;
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public static final int fastScrollVerticalThumbDrawable = 0x7f0301d6;
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public static final int fastScrollVerticalTrackDrawable = 0x7f0301d7;
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public static final int font = 0x7f0301fb;
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public static final int fontProviderAuthority = 0x7f0301fd;
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public static final int fontProviderCerts = 0x7f0301fe;
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public static final int fontProviderFetchStrategy = 0x7f0301ff;
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public static final int fontProviderFetchTimeout = 0x7f030200;
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public static final int fontProviderPackage = 0x7f030201;
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public static final int fontProviderQuery = 0x7f030202;
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public static final int fontStyle = 0x7f030204;
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public static final int fontVariationSettings = 0x7f030205;
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public static final int fontWeight = 0x7f030206;
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public static final int layoutManager = 0x7f03026d;
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public static final int recyclerViewStyle = 0x7f030396;
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public static final int reverseLayout = 0x7f03039c;
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public static final int spanCount = 0x7f0303d4;
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public static final int stackFromEnd = 0x7f0303df;
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public static final int ttcIndex = 0x7f0304b6;
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private attr() {
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}
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}
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public static final class color {
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public static final int notification_action_color_filter = 0x7f0502e9;
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public static final int notification_icon_bg_color = 0x7f0502ea;
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public static final int ripple_material_light = 0x7f0502f7;
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public static final int secondary_text_default_material_light = 0x7f0502f9;
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private color() {
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}
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}
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public static final class dimen {
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public static final int compat_button_inset_horizontal_material = 0x7f060058;
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public static final int compat_button_inset_vertical_material = 0x7f060059;
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public static final int compat_button_padding_horizontal_material = 0x7f06005a;
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public static final int compat_button_padding_vertical_material = 0x7f06005b;
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public static final int compat_control_corner_material = 0x7f06005c;
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public static final int compat_notification_large_icon_max_height = 0x7f06005d;
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public static final int compat_notification_large_icon_max_width = 0x7f06005e;
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public static final int fastscroll_default_thickness = 0x7f060092;
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public static final int fastscroll_margin = 0x7f060093;
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public static final int fastscroll_minimum_range = 0x7f060094;
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public static final int item_touch_helper_max_drag_scroll_per_frame = 0x7f06009c;
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public static final int item_touch_helper_swipe_escape_max_velocity = 0x7f06009d;
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public static final int item_touch_helper_swipe_escape_velocity = 0x7f06009e;
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public static final int notification_action_icon_size = 0x7f060307;
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public static final int notification_action_text_size = 0x7f060308;
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public static final int notification_big_circle_margin = 0x7f060309;
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public static final int notification_content_margin_start = 0x7f06030a;
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public static final int notification_large_icon_height = 0x7f06030b;
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public static final int notification_large_icon_width = 0x7f06030c;
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public static final int notification_main_column_padding_top = 0x7f06030d;
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public static final int notification_media_narrow_margin = 0x7f06030e;
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public static final int notification_right_icon_size = 0x7f06030f;
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public static final int notification_right_side_padding_top = 0x7f060310;
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public static final int notification_small_icon_background_padding = 0x7f060311;
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public static final int notification_small_icon_size_as_large = 0x7f060312;
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public static final int notification_subtext_size = 0x7f060313;
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public static final int notification_top_pad = 0x7f060314;
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public static final int notification_top_pad_large_text = 0x7f060315;
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private dimen() {
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}
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}
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public static final class drawable {
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public static final int notification_action_background = 0x7f0700d0;
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public static final int notification_bg = 0x7f0700d1;
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public static final int notification_bg_low = 0x7f0700d2;
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public static final int notification_bg_low_normal = 0x7f0700d3;
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public static final int notification_bg_low_pressed = 0x7f0700d4;
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public static final int notification_bg_normal = 0x7f0700d5;
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public static final int notification_bg_normal_pressed = 0x7f0700d6;
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public static final int notification_icon_background = 0x7f0700d7;
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public static final int notification_template_icon_bg = 0x7f0700d8;
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public static final int notification_template_icon_low_bg = 0x7f0700d9;
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public static final int notification_tile_bg = 0x7f0700da;
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public static final int notify_panel_notification_icon_bg = 0x7f0700db;
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private drawable() {
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}
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}
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public static final class id {
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public static final int accessibility_action_clickable_span = 0x7f08000f;
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public static final int accessibility_custom_action_0 = 0x7f080010;
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public static final int accessibility_custom_action_1 = 0x7f080011;
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public static final int accessibility_custom_action_10 = 0x7f080012;
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public static final int accessibility_custom_action_11 = 0x7f080013;
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public static final int accessibility_custom_action_12 = 0x7f080014;
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public static final int accessibility_custom_action_13 = 0x7f080015;
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public static final int accessibility_custom_action_14 = 0x7f080016;
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public static final int accessibility_custom_action_15 = 0x7f080017;
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public static final int accessibility_custom_action_16 = 0x7f080018;
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public static final int accessibility_custom_action_17 = 0x7f080019;
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public static final int accessibility_custom_action_18 = 0x7f08001a;
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public static final int accessibility_custom_action_19 = 0x7f08001b;
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public static final int accessibility_custom_action_2 = 0x7f08001c;
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public static final int accessibility_custom_action_20 = 0x7f08001d;
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public static final int accessibility_custom_action_21 = 0x7f08001e;
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public static final int accessibility_custom_action_22 = 0x7f08001f;
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public static final int accessibility_custom_action_23 = 0x7f080020;
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public static final int accessibility_custom_action_24 = 0x7f080021;
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public static final int accessibility_custom_action_25 = 0x7f080022;
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public static final int accessibility_custom_action_26 = 0x7f080023;
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public static final int accessibility_custom_action_27 = 0x7f080024;
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public static final int accessibility_custom_action_28 = 0x7f080025;
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public static final int accessibility_custom_action_29 = 0x7f080026;
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public static final int accessibility_custom_action_3 = 0x7f080027;
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public static final int accessibility_custom_action_30 = 0x7f080028;
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public static final int accessibility_custom_action_31 = 0x7f080029;
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public static final int accessibility_custom_action_4 = 0x7f08002a;
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public static final int accessibility_custom_action_5 = 0x7f08002b;
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public static final int accessibility_custom_action_6 = 0x7f08002c;
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public static final int accessibility_custom_action_7 = 0x7f08002d;
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public static final int accessibility_custom_action_8 = 0x7f08002e;
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public static final int accessibility_custom_action_9 = 0x7f08002f;
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public static final int action_container = 0x7f08003a;
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public static final int action_divider = 0x7f08003c;
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public static final int action_image = 0x7f08003d;
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public static final int action_text = 0x7f080043;
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public static final int actions = 0x7f080044;
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public static final int async = 0x7f080052;
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public static final int blocking = 0x7f08005c;
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public static final int chronometer = 0x7f080071;
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public static final int dialog_button = 0x7f080095;
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public static final int forever = 0x7f0800c2;
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public static final int icon = 0x7f0800d4;
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public static final int icon_group = 0x7f0800d5;
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public static final int info = 0x7f0800dd;
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public static final int italic = 0x7f0800e0;
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public static final int item_touch_helper_previous_elevation = 0x7f0800e1;
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public static final int line1 = 0x7f0800e9;
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public static final int line3 = 0x7f0800ea;
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public static final int normal = 0x7f080139;
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public static final int notification_background = 0x7f08013b;
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public static final int notification_main_column = 0x7f08013c;
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public static final int notification_main_column_container = 0x7f08013d;
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public static final int right_icon = 0x7f08016b;
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public static final int right_side = 0x7f08016c;
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public static final int tag_accessibility_actions = 0x7f0801ad;
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public static final int tag_accessibility_clickable_spans = 0x7f0801ae;
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public static final int tag_accessibility_heading = 0x7f0801af;
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public static final int tag_accessibility_pane_title = 0x7f0801b0;
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public static final int tag_screen_reader_focusable = 0x7f0801b4;
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public static final int tag_transition_group = 0x7f0801b6;
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public static final int tag_unhandled_key_event_manager = 0x7f0801b7;
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public static final int tag_unhandled_key_listeners = 0x7f0801b8;
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public static final int text = 0x7f0801ba;
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public static final int text2 = 0x7f0801bb;
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public static final int time = 0x7f0801ca;
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public static final int title = 0x7f0801cb;
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private id() {
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}
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}
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public static final class integer {
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public static final int status_bar_notification_info_maxnum = 0x7f090043;
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private integer() {
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}
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}
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public static final class layout {
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public static final int custom_dialog = 0x7f0b001d;
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public static final int notification_action = 0x7f0b0060;
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public static final int notification_action_tombstone = 0x7f0b0061;
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public static final int notification_template_custom_big = 0x7f0b0062;
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public static final int notification_template_icon_group = 0x7f0b0063;
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public static final int notification_template_part_chronometer = 0x7f0b0064;
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public static final int notification_template_part_time = 0x7f0b0065;
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private layout() {
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}
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}
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public static final class string {
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public static final int status_bar_notification_info_overflow = 0x7f0f00a8;
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private string() {
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}
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}
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public static final class style {
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public static final int TextAppearance_Compat_Notification = 0x7f1001c3;
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public static final int TextAppearance_Compat_Notification_Info = 0x7f1001c4;
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public static final int TextAppearance_Compat_Notification_Line2 = 0x7f1001c5;
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public static final int TextAppearance_Compat_Notification_Time = 0x7f1001c6;
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public static final int TextAppearance_Compat_Notification_Title = 0x7f1001c7;
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public static final int Widget_Compat_NotificationActionContainer = 0x7f10032d;
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public static final int Widget_Compat_NotificationActionText = 0x7f10032e;
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private style() {
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}
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}
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public static final class styleable {
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public static final int ColorStateListItem_alpha = 0x00000003;
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public static final int ColorStateListItem_android_alpha = 0x00000001;
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public static final int ColorStateListItem_android_color = 0x00000000;
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public static final int ColorStateListItem_android_lStar = 0x00000002;
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public static final int ColorStateListItem_lStar = 0x00000004;
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public static final int FontFamilyFont_android_font = 0x00000000;
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public static final int FontFamilyFont_android_fontStyle = 0x00000002;
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public static final int FontFamilyFont_android_fontVariationSettings = 0x00000004;
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public static final int FontFamilyFont_android_fontWeight = 0x00000001;
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public static final int FontFamilyFont_android_ttcIndex = 0x00000003;
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public static final int FontFamilyFont_font = 0x00000005;
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public static final int FontFamilyFont_fontStyle = 0x00000006;
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public static final int FontFamilyFont_fontVariationSettings = 0x00000007;
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public static final int FontFamilyFont_fontWeight = 0x00000008;
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public static final int FontFamilyFont_ttcIndex = 0x00000009;
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public static final int FontFamily_fontProviderAuthority = 0x00000000;
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public static final int FontFamily_fontProviderCerts = 0x00000001;
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public static final int FontFamily_fontProviderFetchStrategy = 0x00000002;
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public static final int FontFamily_fontProviderFetchTimeout = 0x00000003;
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public static final int FontFamily_fontProviderPackage = 0x00000004;
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public static final int FontFamily_fontProviderQuery = 0x00000005;
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public static final int FontFamily_fontProviderSystemFontFamily = 0x00000006;
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public static final int GradientColorItem_android_color = 0x00000000;
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public static final int GradientColorItem_android_offset = 0x00000001;
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public static final int GradientColor_android_centerColor = 0x00000007;
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public static final int GradientColor_android_centerX = 0x00000003;
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public static final int GradientColor_android_centerY = 0x00000004;
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public static final int GradientColor_android_endColor = 0x00000001;
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public static final int GradientColor_android_endX = 0x0000000a;
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public static final int GradientColor_android_endY = 0x0000000b;
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public static final int GradientColor_android_gradientRadius = 0x00000005;
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public static final int GradientColor_android_startColor = 0x00000000;
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public static final int GradientColor_android_startX = 0x00000008;
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public static final int GradientColor_android_startY = 0x00000009;
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public static final int GradientColor_android_tileMode = 0x00000006;
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public static final int GradientColor_android_type = 0x00000002;
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public static final int RecyclerView_android_clipToPadding = 0x00000001;
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public static final int RecyclerView_android_descendantFocusability = 0x00000002;
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public static final int RecyclerView_android_orientation = 0x00000000;
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public static final int RecyclerView_fastScrollEnabled = 0x00000003;
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public static final int RecyclerView_fastScrollHorizontalThumbDrawable = 0x00000004;
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public static final int RecyclerView_fastScrollHorizontalTrackDrawable = 0x00000005;
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public static final int RecyclerView_fastScrollVerticalThumbDrawable = 0x00000006;
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public static final int RecyclerView_fastScrollVerticalTrackDrawable = 0x00000007;
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public static final int RecyclerView_layoutManager = 0x00000008;
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public static final int RecyclerView_reverseLayout = 0x00000009;
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public static final int RecyclerView_spanCount = 0x0000000a;
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public static final int RecyclerView_stackFromEnd = 0x0000000b;
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public static final int ViewPager2_android_orientation = 0;
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public static final int[] ColorStateListItem = {android.R.attr.color, android.R.attr.alpha, android.R.attr.lStar, ch.mod_p.sre24.e5.R.attr.alpha, ch.mod_p.sre24.e5.R.attr.lStar};
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public static final int[] FontFamily = {ch.mod_p.sre24.e5.R.attr.fontProviderAuthority, ch.mod_p.sre24.e5.R.attr.fontProviderCerts, ch.mod_p.sre24.e5.R.attr.fontProviderFetchStrategy, ch.mod_p.sre24.e5.R.attr.fontProviderFetchTimeout, ch.mod_p.sre24.e5.R.attr.fontProviderPackage, ch.mod_p.sre24.e5.R.attr.fontProviderQuery, ch.mod_p.sre24.e5.R.attr.fontProviderSystemFontFamily};
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public static final int[] FontFamilyFont = {android.R.attr.font, android.R.attr.fontWeight, android.R.attr.fontStyle, android.R.attr.ttcIndex, android.R.attr.fontVariationSettings, ch.mod_p.sre24.e5.R.attr.font, ch.mod_p.sre24.e5.R.attr.fontStyle, ch.mod_p.sre24.e5.R.attr.fontVariationSettings, ch.mod_p.sre24.e5.R.attr.fontWeight, ch.mod_p.sre24.e5.R.attr.ttcIndex};
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public static final int[] GradientColor = {android.R.attr.startColor, android.R.attr.endColor, android.R.attr.type, android.R.attr.centerX, android.R.attr.centerY, android.R.attr.gradientRadius, android.R.attr.tileMode, android.R.attr.centerColor, android.R.attr.startX, android.R.attr.startY, android.R.attr.endX, android.R.attr.endY};
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public static final int[] GradientColorItem = {android.R.attr.color, android.R.attr.offset};
|
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public static final int[] RecyclerView = {android.R.attr.orientation, android.R.attr.clipToPadding, android.R.attr.descendantFocusability, ch.mod_p.sre24.e5.R.attr.fastScrollEnabled, ch.mod_p.sre24.e5.R.attr.fastScrollHorizontalThumbDrawable, ch.mod_p.sre24.e5.R.attr.fastScrollHorizontalTrackDrawable, ch.mod_p.sre24.e5.R.attr.fastScrollVerticalThumbDrawable, ch.mod_p.sre24.e5.R.attr.fastScrollVerticalTrackDrawable, ch.mod_p.sre24.e5.R.attr.layoutManager, ch.mod_p.sre24.e5.R.attr.reverseLayout, ch.mod_p.sre24.e5.R.attr.spanCount, ch.mod_p.sre24.e5.R.attr.stackFromEnd};
|
||||
public static final int[] ViewPager2 = {android.R.attr.orientation};
|
||||
|
||||
private styleable() {
|
||||
}
|
||||
}
|
||||
|
||||
private R() {
|
||||
}
|
||||
}
|
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@ -0,0 +1,514 @@
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package androidx.viewpager2.adapter;
|
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|
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import android.os.Bundle;
|
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import android.os.Handler;
|
||||
import android.os.Looper;
|
||||
import android.os.Parcelable;
|
||||
import android.view.View;
|
||||
import android.view.ViewGroup;
|
||||
import android.view.ViewParent;
|
||||
import android.widget.FrameLayout;
|
||||
import androidx.collection.ArraySet;
|
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import androidx.collection.LongSparseArray;
|
||||
import androidx.core.util.Preconditions;
|
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import androidx.core.view.ViewCompat;
|
||||
import androidx.fragment.app.Fragment;
|
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import androidx.fragment.app.FragmentActivity;
|
||||
import androidx.fragment.app.FragmentManager;
|
||||
import androidx.fragment.app.FragmentTransaction;
|
||||
import androidx.lifecycle.Lifecycle;
|
||||
import androidx.lifecycle.LifecycleEventObserver;
|
||||
import androidx.lifecycle.LifecycleOwner;
|
||||
import androidx.recyclerview.widget.RecyclerView;
|
||||
import androidx.viewpager2.widget.ViewPager2;
|
||||
import java.util.Iterator;
|
||||
|
||||
/* loaded from: classes.dex */
|
||||
public abstract class FragmentStateAdapter extends RecyclerView.Adapter<FragmentViewHolder> implements StatefulAdapter {
|
||||
private static final long GRACE_WINDOW_TIME_MS = 10000;
|
||||
private static final String KEY_PREFIX_FRAGMENT = "f#";
|
||||
private static final String KEY_PREFIX_STATE = "s#";
|
||||
final FragmentManager mFragmentManager;
|
||||
private FragmentMaxLifecycleEnforcer mFragmentMaxLifecycleEnforcer;
|
||||
final LongSparseArray<Fragment> mFragments;
|
||||
private boolean mHasStaleFragments;
|
||||
boolean mIsInGracePeriod;
|
||||
private final LongSparseArray<Integer> mItemIdToViewHolder;
|
||||
final Lifecycle mLifecycle;
|
||||
private final LongSparseArray<Fragment.SavedState> mSavedStates;
|
||||
|
||||
public abstract Fragment createFragment(int i);
|
||||
|
||||
@Override // androidx.recyclerview.widget.RecyclerView.Adapter
|
||||
public long getItemId(int i) {
|
||||
return i;
|
||||
}
|
||||
|
||||
@Override // androidx.recyclerview.widget.RecyclerView.Adapter
|
||||
public final boolean onFailedToRecycleView(FragmentViewHolder fragmentViewHolder) {
|
||||
return true;
|
||||
}
|
||||
|
||||
public FragmentStateAdapter(FragmentActivity fragmentActivity) {
|
||||
this(fragmentActivity.getSupportFragmentManager(), fragmentActivity.getLifecycle());
|
||||
}
|
||||
|
||||
public FragmentStateAdapter(Fragment fragment) {
|
||||
this(fragment.getChildFragmentManager(), fragment.getLifecycle());
|
||||
}
|
||||
|
||||
public FragmentStateAdapter(FragmentManager fragmentManager, Lifecycle lifecycle) {
|
||||
this.mFragments = new LongSparseArray<>();
|
||||
this.mSavedStates = new LongSparseArray<>();
|
||||
this.mItemIdToViewHolder = new LongSparseArray<>();
|
||||
this.mIsInGracePeriod = false;
|
||||
this.mHasStaleFragments = false;
|
||||
this.mFragmentManager = fragmentManager;
|
||||
this.mLifecycle = lifecycle;
|
||||
super.setHasStableIds(true);
|
||||
}
|
||||
|
||||
@Override // androidx.recyclerview.widget.RecyclerView.Adapter
|
||||
public void onAttachedToRecyclerView(RecyclerView recyclerView) {
|
||||
Preconditions.checkArgument(this.mFragmentMaxLifecycleEnforcer == null);
|
||||
FragmentMaxLifecycleEnforcer fragmentMaxLifecycleEnforcer = new FragmentMaxLifecycleEnforcer();
|
||||
this.mFragmentMaxLifecycleEnforcer = fragmentMaxLifecycleEnforcer;
|
||||
fragmentMaxLifecycleEnforcer.register(recyclerView);
|
||||
}
|
||||
|
||||
@Override // androidx.recyclerview.widget.RecyclerView.Adapter
|
||||
public void onDetachedFromRecyclerView(RecyclerView recyclerView) {
|
||||
this.mFragmentMaxLifecycleEnforcer.unregister(recyclerView);
|
||||
this.mFragmentMaxLifecycleEnforcer = null;
|
||||
}
|
||||
|
||||
@Override // androidx.recyclerview.widget.RecyclerView.Adapter
|
||||
public final FragmentViewHolder onCreateViewHolder(ViewGroup viewGroup, int i) {
|
||||
return FragmentViewHolder.create(viewGroup);
|
||||
}
|
||||
|
||||
@Override // androidx.recyclerview.widget.RecyclerView.Adapter
|
||||
public final void onBindViewHolder(final FragmentViewHolder fragmentViewHolder, int i) {
|
||||
long itemId = fragmentViewHolder.getItemId();
|
||||
int id = fragmentViewHolder.getContainer().getId();
|
||||
Long itemForViewHolder = itemForViewHolder(id);
|
||||
if (itemForViewHolder != null && itemForViewHolder.longValue() != itemId) {
|
||||
removeFragment(itemForViewHolder.longValue());
|
||||
this.mItemIdToViewHolder.remove(itemForViewHolder.longValue());
|
||||
}
|
||||
this.mItemIdToViewHolder.put(itemId, Integer.valueOf(id));
|
||||
ensureFragment(i);
|
||||
final FrameLayout container = fragmentViewHolder.getContainer();
|
||||
if (ViewCompat.isAttachedToWindow(container)) {
|
||||
if (container.getParent() != null) {
|
||||
throw new IllegalStateException("Design assumption violated.");
|
||||
}
|
||||
container.addOnLayoutChangeListener(new View.OnLayoutChangeListener() { // from class: androidx.viewpager2.adapter.FragmentStateAdapter.1
|
||||
@Override // android.view.View.OnLayoutChangeListener
|
||||
public void onLayoutChange(View view, int i2, int i3, int i4, int i5, int i6, int i7, int i8, int i9) {
|
||||
if (container.getParent() != null) {
|
||||
container.removeOnLayoutChangeListener(this);
|
||||
FragmentStateAdapter.this.placeFragmentInViewHolder(fragmentViewHolder);
|
||||
}
|
||||
}
|
||||
});
|
||||
}
|
||||
gcFragments();
|
||||
}
|
||||
|
||||
void gcFragments() {
|
||||
if (!this.mHasStaleFragments || shouldDelayFragmentTransactions()) {
|
||||
return;
|
||||
}
|
||||
ArraySet arraySet = new ArraySet();
|
||||
for (int i = 0; i < this.mFragments.size(); i++) {
|
||||
long keyAt = this.mFragments.keyAt(i);
|
||||
if (!containsItem(keyAt)) {
|
||||
arraySet.add(Long.valueOf(keyAt));
|
||||
this.mItemIdToViewHolder.remove(keyAt);
|
||||
}
|
||||
}
|
||||
if (!this.mIsInGracePeriod) {
|
||||
this.mHasStaleFragments = false;
|
||||
for (int i2 = 0; i2 < this.mFragments.size(); i2++) {
|
||||
long keyAt2 = this.mFragments.keyAt(i2);
|
||||
if (!isFragmentViewBound(keyAt2)) {
|
||||
arraySet.add(Long.valueOf(keyAt2));
|
||||
}
|
||||
}
|
||||
}
|
||||
Iterator<E> it = arraySet.iterator();
|
||||
while (it.hasNext()) {
|
||||
removeFragment(((Long) it.next()).longValue());
|
||||
}
|
||||
}
|
||||
|
||||
private boolean isFragmentViewBound(long j) {
|
||||
View view;
|
||||
if (this.mItemIdToViewHolder.containsKey(j)) {
|
||||
return true;
|
||||
}
|
||||
Fragment fragment = this.mFragments.get(j);
|
||||
return (fragment == null || (view = fragment.getView()) == null || view.getParent() == null) ? false : true;
|
||||
}
|
||||
|
||||
private Long itemForViewHolder(int i) {
|
||||
Long l = null;
|
||||
for (int i2 = 0; i2 < this.mItemIdToViewHolder.size(); i2++) {
|
||||
if (this.mItemIdToViewHolder.valueAt(i2).intValue() == i) {
|
||||
if (l != null) {
|
||||
throw new IllegalStateException("Design assumption violated: a ViewHolder can only be bound to one item at a time.");
|
||||
}
|
||||
l = Long.valueOf(this.mItemIdToViewHolder.keyAt(i2));
|
||||
}
|
||||
}
|
||||
return l;
|
||||
}
|
||||
|
||||
private void ensureFragment(int i) {
|
||||
long itemId = getItemId(i);
|
||||
if (this.mFragments.containsKey(itemId)) {
|
||||
return;
|
||||
}
|
||||
Fragment createFragment = createFragment(i);
|
||||
createFragment.setInitialSavedState(this.mSavedStates.get(itemId));
|
||||
this.mFragments.put(itemId, createFragment);
|
||||
}
|
||||
|
||||
@Override // androidx.recyclerview.widget.RecyclerView.Adapter
|
||||
public final void onViewAttachedToWindow(FragmentViewHolder fragmentViewHolder) {
|
||||
placeFragmentInViewHolder(fragmentViewHolder);
|
||||
gcFragments();
|
||||
}
|
||||
|
||||
void placeFragmentInViewHolder(final FragmentViewHolder fragmentViewHolder) {
|
||||
Fragment fragment = this.mFragments.get(fragmentViewHolder.getItemId());
|
||||
if (fragment == null) {
|
||||
throw new IllegalStateException("Design assumption violated.");
|
||||
}
|
||||
FrameLayout container = fragmentViewHolder.getContainer();
|
||||
View view = fragment.getView();
|
||||
if (!fragment.isAdded() && view != null) {
|
||||
throw new IllegalStateException("Design assumption violated.");
|
||||
}
|
||||
if (fragment.isAdded() && view == null) {
|
||||
scheduleViewAttach(fragment, container);
|
||||
return;
|
||||
}
|
||||
if (fragment.isAdded() && view.getParent() != null) {
|
||||
if (view.getParent() != container) {
|
||||
addViewToContainer(view, container);
|
||||
}
|
||||
} else {
|
||||
if (fragment.isAdded()) {
|
||||
addViewToContainer(view, container);
|
||||
return;
|
||||
}
|
||||
if (!shouldDelayFragmentTransactions()) {
|
||||
scheduleViewAttach(fragment, container);
|
||||
this.mFragmentManager.beginTransaction().add(fragment, "f" + fragmentViewHolder.getItemId()).setMaxLifecycle(fragment, Lifecycle.State.STARTED).commitNow();
|
||||
this.mFragmentMaxLifecycleEnforcer.updateFragmentMaxLifecycle(false);
|
||||
return;
|
||||
}
|
||||
if (this.mFragmentManager.isDestroyed()) {
|
||||
return;
|
||||
}
|
||||
this.mLifecycle.addObserver(new LifecycleEventObserver() { // from class: androidx.viewpager2.adapter.FragmentStateAdapter.2
|
||||
@Override // androidx.lifecycle.LifecycleEventObserver
|
||||
public void onStateChanged(LifecycleOwner lifecycleOwner, Lifecycle.Event event) {
|
||||
if (FragmentStateAdapter.this.shouldDelayFragmentTransactions()) {
|
||||
return;
|
||||
}
|
||||
lifecycleOwner.getLifecycle().removeObserver(this);
|
||||
if (ViewCompat.isAttachedToWindow(fragmentViewHolder.getContainer())) {
|
||||
FragmentStateAdapter.this.placeFragmentInViewHolder(fragmentViewHolder);
|
||||
}
|
||||
}
|
||||
});
|
||||
}
|
||||
}
|
||||
|
||||
private void scheduleViewAttach(final Fragment fragment, final FrameLayout frameLayout) {
|
||||
this.mFragmentManager.registerFragmentLifecycleCallbacks(new FragmentManager.FragmentLifecycleCallbacks() { // from class: androidx.viewpager2.adapter.FragmentStateAdapter.3
|
||||
@Override // androidx.fragment.app.FragmentManager.FragmentLifecycleCallbacks
|
||||
public void onFragmentViewCreated(FragmentManager fragmentManager, Fragment fragment2, View view, Bundle bundle) {
|
||||
if (fragment2 == fragment) {
|
||||
fragmentManager.unregisterFragmentLifecycleCallbacks(this);
|
||||
FragmentStateAdapter.this.addViewToContainer(view, frameLayout);
|
||||
}
|
||||
}
|
||||
}, false);
|
||||
}
|
||||
|
||||
void addViewToContainer(View view, FrameLayout frameLayout) {
|
||||
if (frameLayout.getChildCount() > 1) {
|
||||
throw new IllegalStateException("Design assumption violated.");
|
||||
}
|
||||
if (view.getParent() == frameLayout) {
|
||||
return;
|
||||
}
|
||||
if (frameLayout.getChildCount() > 0) {
|
||||
frameLayout.removeAllViews();
|
||||
}
|
||||
if (view.getParent() != null) {
|
||||
((ViewGroup) view.getParent()).removeView(view);
|
||||
}
|
||||
frameLayout.addView(view);
|
||||
}
|
||||
|
||||
@Override // androidx.recyclerview.widget.RecyclerView.Adapter
|
||||
public final void onViewRecycled(FragmentViewHolder fragmentViewHolder) {
|
||||
Long itemForViewHolder = itemForViewHolder(fragmentViewHolder.getContainer().getId());
|
||||
if (itemForViewHolder != null) {
|
||||
removeFragment(itemForViewHolder.longValue());
|
||||
this.mItemIdToViewHolder.remove(itemForViewHolder.longValue());
|
||||
}
|
||||
}
|
||||
|
||||
private void removeFragment(long j) {
|
||||
ViewParent parent;
|
||||
Fragment fragment = this.mFragments.get(j);
|
||||
if (fragment == null) {
|
||||
return;
|
||||
}
|
||||
if (fragment.getView() != null && (parent = fragment.getView().getParent()) != null) {
|
||||
((FrameLayout) parent).removeAllViews();
|
||||
}
|
||||
if (!containsItem(j)) {
|
||||
this.mSavedStates.remove(j);
|
||||
}
|
||||
if (!fragment.isAdded()) {
|
||||
this.mFragments.remove(j);
|
||||
return;
|
||||
}
|
||||
if (shouldDelayFragmentTransactions()) {
|
||||
this.mHasStaleFragments = true;
|
||||
return;
|
||||
}
|
||||
if (fragment.isAdded() && containsItem(j)) {
|
||||
this.mSavedStates.put(j, this.mFragmentManager.saveFragmentInstanceState(fragment));
|
||||
}
|
||||
this.mFragmentManager.beginTransaction().remove(fragment).commitNow();
|
||||
this.mFragments.remove(j);
|
||||
}
|
||||
|
||||
boolean shouldDelayFragmentTransactions() {
|
||||
return this.mFragmentManager.isStateSaved();
|
||||
}
|
||||
|
||||
public boolean containsItem(long j) {
|
||||
return j >= 0 && j < ((long) getItemCount());
|
||||
}
|
||||
|
||||
@Override // androidx.recyclerview.widget.RecyclerView.Adapter
|
||||
public final void setHasStableIds(boolean z) {
|
||||
throw new UnsupportedOperationException("Stable Ids are required for the adapter to function properly, and the adapter takes care of setting the flag.");
|
||||
}
|
||||
|
||||
@Override // androidx.viewpager2.adapter.StatefulAdapter
|
||||
public final Parcelable saveState() {
|
||||
Bundle bundle = new Bundle(this.mFragments.size() + this.mSavedStates.size());
|
||||
for (int i = 0; i < this.mFragments.size(); i++) {
|
||||
long keyAt = this.mFragments.keyAt(i);
|
||||
Fragment fragment = this.mFragments.get(keyAt);
|
||||
if (fragment != null && fragment.isAdded()) {
|
||||
this.mFragmentManager.putFragment(bundle, createKey(KEY_PREFIX_FRAGMENT, keyAt), fragment);
|
||||
}
|
||||
}
|
||||
for (int i2 = 0; i2 < this.mSavedStates.size(); i2++) {
|
||||
long keyAt2 = this.mSavedStates.keyAt(i2);
|
||||
if (containsItem(keyAt2)) {
|
||||
bundle.putParcelable(createKey(KEY_PREFIX_STATE, keyAt2), this.mSavedStates.get(keyAt2));
|
||||
}
|
||||
}
|
||||
return bundle;
|
||||
}
|
||||
|
||||
@Override // androidx.viewpager2.adapter.StatefulAdapter
|
||||
public final void restoreState(Parcelable parcelable) {
|
||||
if (!this.mSavedStates.isEmpty() || !this.mFragments.isEmpty()) {
|
||||
throw new IllegalStateException("Expected the adapter to be 'fresh' while restoring state.");
|
||||
}
|
||||
Bundle bundle = (Bundle) parcelable;
|
||||
if (bundle.getClassLoader() == null) {
|
||||
bundle.setClassLoader(getClass().getClassLoader());
|
||||
}
|
||||
for (String str : bundle.keySet()) {
|
||||
if (isValidKey(str, KEY_PREFIX_FRAGMENT)) {
|
||||
this.mFragments.put(parseIdFromKey(str, KEY_PREFIX_FRAGMENT), this.mFragmentManager.getFragment(bundle, str));
|
||||
} else if (isValidKey(str, KEY_PREFIX_STATE)) {
|
||||
long parseIdFromKey = parseIdFromKey(str, KEY_PREFIX_STATE);
|
||||
Fragment.SavedState savedState = (Fragment.SavedState) bundle.getParcelable(str);
|
||||
if (containsItem(parseIdFromKey)) {
|
||||
this.mSavedStates.put(parseIdFromKey, savedState);
|
||||
}
|
||||
} else {
|
||||
throw new IllegalArgumentException("Unexpected key in savedState: " + str);
|
||||
}
|
||||
}
|
||||
if (this.mFragments.isEmpty()) {
|
||||
return;
|
||||
}
|
||||
this.mHasStaleFragments = true;
|
||||
this.mIsInGracePeriod = true;
|
||||
gcFragments();
|
||||
scheduleGracePeriodEnd();
|
||||
}
|
||||
|
||||
private void scheduleGracePeriodEnd() {
|
||||
final Handler handler = new Handler(Looper.getMainLooper());
|
||||
final Runnable runnable = new Runnable() { // from class: androidx.viewpager2.adapter.FragmentStateAdapter.4
|
||||
@Override // java.lang.Runnable
|
||||
public void run() {
|
||||
FragmentStateAdapter.this.mIsInGracePeriod = false;
|
||||
FragmentStateAdapter.this.gcFragments();
|
||||
}
|
||||
};
|
||||
this.mLifecycle.addObserver(new LifecycleEventObserver() { // from class: androidx.viewpager2.adapter.FragmentStateAdapter.5
|
||||
@Override // androidx.lifecycle.LifecycleEventObserver
|
||||
public void onStateChanged(LifecycleOwner lifecycleOwner, Lifecycle.Event event) {
|
||||
if (event == Lifecycle.Event.ON_DESTROY) {
|
||||
handler.removeCallbacks(runnable);
|
||||
lifecycleOwner.getLifecycle().removeObserver(this);
|
||||
}
|
||||
}
|
||||
});
|
||||
handler.postDelayed(runnable, GRACE_WINDOW_TIME_MS);
|
||||
}
|
||||
|
||||
private static String createKey(String str, long j) {
|
||||
return str + j;
|
||||
}
|
||||
|
||||
private static boolean isValidKey(String str, String str2) {
|
||||
return str.startsWith(str2) && str.length() > str2.length();
|
||||
}
|
||||
|
||||
private static long parseIdFromKey(String str, String str2) {
|
||||
return Long.parseLong(str.substring(str2.length()));
|
||||
}
|
||||
|
||||
class FragmentMaxLifecycleEnforcer {
|
||||
private RecyclerView.AdapterDataObserver mDataObserver;
|
||||
private LifecycleEventObserver mLifecycleObserver;
|
||||
private ViewPager2.OnPageChangeCallback mPageChangeCallback;
|
||||
private long mPrimaryItemId = -1;
|
||||
private ViewPager2 mViewPager;
|
||||
|
||||
FragmentMaxLifecycleEnforcer() {
|
||||
}
|
||||
|
||||
void register(RecyclerView recyclerView) {
|
||||
this.mViewPager = inferViewPager(recyclerView);
|
||||
ViewPager2.OnPageChangeCallback onPageChangeCallback = new ViewPager2.OnPageChangeCallback() { // from class: androidx.viewpager2.adapter.FragmentStateAdapter.FragmentMaxLifecycleEnforcer.1
|
||||
@Override // androidx.viewpager2.widget.ViewPager2.OnPageChangeCallback
|
||||
public void onPageScrollStateChanged(int i) {
|
||||
FragmentMaxLifecycleEnforcer.this.updateFragmentMaxLifecycle(false);
|
||||
}
|
||||
|
||||
@Override // androidx.viewpager2.widget.ViewPager2.OnPageChangeCallback
|
||||
public void onPageSelected(int i) {
|
||||
FragmentMaxLifecycleEnforcer.this.updateFragmentMaxLifecycle(false);
|
||||
}
|
||||
};
|
||||
this.mPageChangeCallback = onPageChangeCallback;
|
||||
this.mViewPager.registerOnPageChangeCallback(onPageChangeCallback);
|
||||
DataSetChangeObserver dataSetChangeObserver = new DataSetChangeObserver() { // from class: androidx.viewpager2.adapter.FragmentStateAdapter.FragmentMaxLifecycleEnforcer.2
|
||||
@Override // androidx.viewpager2.adapter.FragmentStateAdapter.DataSetChangeObserver, androidx.recyclerview.widget.RecyclerView.AdapterDataObserver
|
||||
public void onChanged() {
|
||||
FragmentMaxLifecycleEnforcer.this.updateFragmentMaxLifecycle(true);
|
||||
}
|
||||
};
|
||||
this.mDataObserver = dataSetChangeObserver;
|
||||
FragmentStateAdapter.this.registerAdapterDataObserver(dataSetChangeObserver);
|
||||
this.mLifecycleObserver = new LifecycleEventObserver() { // from class: androidx.viewpager2.adapter.FragmentStateAdapter.FragmentMaxLifecycleEnforcer.3
|
||||
@Override // androidx.lifecycle.LifecycleEventObserver
|
||||
public void onStateChanged(LifecycleOwner lifecycleOwner, Lifecycle.Event event) {
|
||||
FragmentMaxLifecycleEnforcer.this.updateFragmentMaxLifecycle(false);
|
||||
}
|
||||
};
|
||||
FragmentStateAdapter.this.mLifecycle.addObserver(this.mLifecycleObserver);
|
||||
}
|
||||
|
||||
void unregister(RecyclerView recyclerView) {
|
||||
inferViewPager(recyclerView).unregisterOnPageChangeCallback(this.mPageChangeCallback);
|
||||
FragmentStateAdapter.this.unregisterAdapterDataObserver(this.mDataObserver);
|
||||
FragmentStateAdapter.this.mLifecycle.removeObserver(this.mLifecycleObserver);
|
||||
this.mViewPager = null;
|
||||
}
|
||||
|
||||
void updateFragmentMaxLifecycle(boolean z) {
|
||||
int currentItem;
|
||||
Fragment fragment;
|
||||
if (FragmentStateAdapter.this.shouldDelayFragmentTransactions() || this.mViewPager.getScrollState() != 0 || FragmentStateAdapter.this.mFragments.isEmpty() || FragmentStateAdapter.this.getItemCount() == 0 || (currentItem = this.mViewPager.getCurrentItem()) >= FragmentStateAdapter.this.getItemCount()) {
|
||||
return;
|
||||
}
|
||||
long itemId = FragmentStateAdapter.this.getItemId(currentItem);
|
||||
if ((itemId != this.mPrimaryItemId || z) && (fragment = FragmentStateAdapter.this.mFragments.get(itemId)) != null && fragment.isAdded()) {
|
||||
this.mPrimaryItemId = itemId;
|
||||
FragmentTransaction beginTransaction = FragmentStateAdapter.this.mFragmentManager.beginTransaction();
|
||||
Fragment fragment2 = null;
|
||||
for (int i = 0; i < FragmentStateAdapter.this.mFragments.size(); i++) {
|
||||
long keyAt = FragmentStateAdapter.this.mFragments.keyAt(i);
|
||||
Fragment valueAt = FragmentStateAdapter.this.mFragments.valueAt(i);
|
||||
if (valueAt.isAdded()) {
|
||||
if (keyAt != this.mPrimaryItemId) {
|
||||
beginTransaction.setMaxLifecycle(valueAt, Lifecycle.State.STARTED);
|
||||
} else {
|
||||
fragment2 = valueAt;
|
||||
}
|
||||
valueAt.setMenuVisibility(keyAt == this.mPrimaryItemId);
|
||||
}
|
||||
}
|
||||
if (fragment2 != null) {
|
||||
beginTransaction.setMaxLifecycle(fragment2, Lifecycle.State.RESUMED);
|
||||
}
|
||||
if (beginTransaction.isEmpty()) {
|
||||
return;
|
||||
}
|
||||
beginTransaction.commitNow();
|
||||
}
|
||||
}
|
||||
|
||||
private ViewPager2 inferViewPager(RecyclerView recyclerView) {
|
||||
ViewParent parent = recyclerView.getParent();
|
||||
if (parent instanceof ViewPager2) {
|
||||
return (ViewPager2) parent;
|
||||
}
|
||||
throw new IllegalStateException("Expected ViewPager2 instance. Got: " + parent);
|
||||
}
|
||||
}
|
||||
|
||||
private static abstract class DataSetChangeObserver extends RecyclerView.AdapterDataObserver {
|
||||
@Override // androidx.recyclerview.widget.RecyclerView.AdapterDataObserver
|
||||
public abstract void onChanged();
|
||||
|
||||
private DataSetChangeObserver() {
|
||||
}
|
||||
|
||||
@Override // androidx.recyclerview.widget.RecyclerView.AdapterDataObserver
|
||||
public final void onItemRangeChanged(int i, int i2) {
|
||||
onChanged();
|
||||
}
|
||||
|
||||
@Override // androidx.recyclerview.widget.RecyclerView.AdapterDataObserver
|
||||
public final void onItemRangeChanged(int i, int i2, Object obj) {
|
||||
onChanged();
|
||||
}
|
||||
|
||||
@Override // androidx.recyclerview.widget.RecyclerView.AdapterDataObserver
|
||||
public final void onItemRangeInserted(int i, int i2) {
|
||||
onChanged();
|
||||
}
|
||||
|
||||
@Override // androidx.recyclerview.widget.RecyclerView.AdapterDataObserver
|
||||
public final void onItemRangeRemoved(int i, int i2) {
|
||||
onChanged();
|
||||
}
|
||||
|
||||
@Override // androidx.recyclerview.widget.RecyclerView.AdapterDataObserver
|
||||
public final void onItemRangeMoved(int i, int i2, int i3) {
|
||||
onChanged();
|
||||
}
|
||||
}
|
||||
}
|
||||
@ -0,0 +1,25 @@
|
||||
package androidx.viewpager2.adapter;
|
||||
|
||||
import android.view.ViewGroup;
|
||||
import android.widget.FrameLayout;
|
||||
import androidx.core.view.ViewCompat;
|
||||
import androidx.recyclerview.widget.RecyclerView;
|
||||
|
||||
/* loaded from: classes.dex */
|
||||
public final class FragmentViewHolder extends RecyclerView.ViewHolder {
|
||||
private FragmentViewHolder(FrameLayout frameLayout) {
|
||||
super(frameLayout);
|
||||
}
|
||||
|
||||
static FragmentViewHolder create(ViewGroup viewGroup) {
|
||||
FrameLayout frameLayout = new FrameLayout(viewGroup.getContext());
|
||||
frameLayout.setLayoutParams(new ViewGroup.LayoutParams(-1, -1));
|
||||
frameLayout.setId(ViewCompat.generateViewId());
|
||||
frameLayout.setSaveEnabled(false);
|
||||
return new FragmentViewHolder(frameLayout);
|
||||
}
|
||||
|
||||
FrameLayout getContainer() {
|
||||
return (FrameLayout) this.itemView;
|
||||
}
|
||||
}
|
||||
@ -0,0 +1,10 @@
|
||||
package androidx.viewpager2.adapter;
|
||||
|
||||
import android.os.Parcelable;
|
||||
|
||||
/* loaded from: classes.dex */
|
||||
public interface StatefulAdapter {
|
||||
void restoreState(Parcelable parcelable);
|
||||
|
||||
Parcelable saveState();
|
||||
}
|
||||
@ -0,0 +1,110 @@
|
||||
package androidx.viewpager2.widget;
|
||||
|
||||
import android.animation.LayoutTransition;
|
||||
import android.view.View;
|
||||
import android.view.ViewGroup;
|
||||
import androidx.recyclerview.widget.LinearLayoutManager;
|
||||
import java.lang.reflect.Array;
|
||||
import java.util.Arrays;
|
||||
import java.util.Comparator;
|
||||
|
||||
/* loaded from: classes.dex */
|
||||
final class AnimateLayoutChangeDetector {
|
||||
private static final ViewGroup.MarginLayoutParams ZERO_MARGIN_LAYOUT_PARAMS;
|
||||
private LinearLayoutManager mLayoutManager;
|
||||
|
||||
static {
|
||||
ViewGroup.MarginLayoutParams marginLayoutParams = new ViewGroup.MarginLayoutParams(-1, -1);
|
||||
ZERO_MARGIN_LAYOUT_PARAMS = marginLayoutParams;
|
||||
marginLayoutParams.setMargins(0, 0, 0, 0);
|
||||
}
|
||||
|
||||
AnimateLayoutChangeDetector(LinearLayoutManager linearLayoutManager) {
|
||||
this.mLayoutManager = linearLayoutManager;
|
||||
}
|
||||
|
||||
boolean mayHaveInterferingAnimations() {
|
||||
return (!arePagesLaidOutContiguously() || this.mLayoutManager.getChildCount() <= 1) && hasRunningChangingLayoutTransition();
|
||||
}
|
||||
|
||||
private boolean arePagesLaidOutContiguously() {
|
||||
int top;
|
||||
int i;
|
||||
int bottom;
|
||||
int i2;
|
||||
int childCount = this.mLayoutManager.getChildCount();
|
||||
if (childCount == 0) {
|
||||
return true;
|
||||
}
|
||||
boolean z = this.mLayoutManager.getOrientation() == 0;
|
||||
int[][] iArr = (int[][]) Array.newInstance((Class<?>) Integer.TYPE, childCount, 2);
|
||||
for (int i3 = 0; i3 < childCount; i3++) {
|
||||
View childAt = this.mLayoutManager.getChildAt(i3);
|
||||
if (childAt == null) {
|
||||
throw new IllegalStateException("null view contained in the view hierarchy");
|
||||
}
|
||||
ViewGroup.LayoutParams layoutParams = childAt.getLayoutParams();
|
||||
ViewGroup.MarginLayoutParams marginLayoutParams = layoutParams instanceof ViewGroup.MarginLayoutParams ? (ViewGroup.MarginLayoutParams) layoutParams : ZERO_MARGIN_LAYOUT_PARAMS;
|
||||
int[] iArr2 = iArr[i3];
|
||||
if (z) {
|
||||
top = childAt.getLeft();
|
||||
i = marginLayoutParams.leftMargin;
|
||||
} else {
|
||||
top = childAt.getTop();
|
||||
i = marginLayoutParams.topMargin;
|
||||
}
|
||||
iArr2[0] = top - i;
|
||||
int[] iArr3 = iArr[i3];
|
||||
if (z) {
|
||||
bottom = childAt.getRight();
|
||||
i2 = marginLayoutParams.rightMargin;
|
||||
} else {
|
||||
bottom = childAt.getBottom();
|
||||
i2 = marginLayoutParams.bottomMargin;
|
||||
}
|
||||
iArr3[1] = bottom + i2;
|
||||
}
|
||||
Arrays.sort(iArr, new Comparator<int[]>() { // from class: androidx.viewpager2.widget.AnimateLayoutChangeDetector.1
|
||||
@Override // java.util.Comparator
|
||||
public int compare(int[] iArr4, int[] iArr5) {
|
||||
return iArr4[0] - iArr5[0];
|
||||
}
|
||||
});
|
||||
for (int i4 = 1; i4 < childCount; i4++) {
|
||||
if (iArr[i4 - 1][1] != iArr[i4][0]) {
|
||||
return false;
|
||||
}
|
||||
}
|
||||
int[] iArr4 = iArr[0];
|
||||
int i5 = iArr4[1];
|
||||
int i6 = iArr4[0];
|
||||
return i6 <= 0 && iArr[childCount - 1][1] >= i5 - i6;
|
||||
}
|
||||
|
||||
private boolean hasRunningChangingLayoutTransition() {
|
||||
int childCount = this.mLayoutManager.getChildCount();
|
||||
for (int i = 0; i < childCount; i++) {
|
||||
if (hasRunningChangingLayoutTransition(this.mLayoutManager.getChildAt(i))) {
|
||||
return true;
|
||||
}
|
||||
}
|
||||
return false;
|
||||
}
|
||||
|
||||
private static boolean hasRunningChangingLayoutTransition(View view) {
|
||||
if (view instanceof ViewGroup) {
|
||||
ViewGroup viewGroup = (ViewGroup) view;
|
||||
LayoutTransition layoutTransition = viewGroup.getLayoutTransition();
|
||||
if (layoutTransition != null && layoutTransition.isChangingLayout()) {
|
||||
return true;
|
||||
}
|
||||
int childCount = viewGroup.getChildCount();
|
||||
for (int i = 0; i < childCount; i++) {
|
||||
if (hasRunningChangingLayoutTransition(viewGroup.getChildAt(i))) {
|
||||
return true;
|
||||
}
|
||||
}
|
||||
}
|
||||
return false;
|
||||
}
|
||||
}
|
||||
@ -0,0 +1,64 @@
|
||||
package androidx.viewpager2.widget;
|
||||
|
||||
import androidx.viewpager2.widget.ViewPager2;
|
||||
import java.util.ArrayList;
|
||||
import java.util.ConcurrentModificationException;
|
||||
import java.util.Iterator;
|
||||
import java.util.List;
|
||||
|
||||
/* loaded from: classes.dex */
|
||||
final class CompositeOnPageChangeCallback extends ViewPager2.OnPageChangeCallback {
|
||||
private final List<ViewPager2.OnPageChangeCallback> mCallbacks;
|
||||
|
||||
CompositeOnPageChangeCallback(int i) {
|
||||
this.mCallbacks = new ArrayList(i);
|
||||
}
|
||||
|
||||
void addOnPageChangeCallback(ViewPager2.OnPageChangeCallback onPageChangeCallback) {
|
||||
this.mCallbacks.add(onPageChangeCallback);
|
||||
}
|
||||
|
||||
void removeOnPageChangeCallback(ViewPager2.OnPageChangeCallback onPageChangeCallback) {
|
||||
this.mCallbacks.remove(onPageChangeCallback);
|
||||
}
|
||||
|
||||
@Override // androidx.viewpager2.widget.ViewPager2.OnPageChangeCallback
|
||||
public void onPageScrolled(int i, float f, int i2) {
|
||||
try {
|
||||
Iterator<ViewPager2.OnPageChangeCallback> it = this.mCallbacks.iterator();
|
||||
while (it.hasNext()) {
|
||||
it.next().onPageScrolled(i, f, i2);
|
||||
}
|
||||
} catch (ConcurrentModificationException e) {
|
||||
throwCallbackListModifiedWhileInUse(e);
|
||||
}
|
||||
}
|
||||
|
||||
@Override // androidx.viewpager2.widget.ViewPager2.OnPageChangeCallback
|
||||
public void onPageSelected(int i) {
|
||||
try {
|
||||
Iterator<ViewPager2.OnPageChangeCallback> it = this.mCallbacks.iterator();
|
||||
while (it.hasNext()) {
|
||||
it.next().onPageSelected(i);
|
||||
}
|
||||
} catch (ConcurrentModificationException e) {
|
||||
throwCallbackListModifiedWhileInUse(e);
|
||||
}
|
||||
}
|
||||
|
||||
@Override // androidx.viewpager2.widget.ViewPager2.OnPageChangeCallback
|
||||
public void onPageScrollStateChanged(int i) {
|
||||
try {
|
||||
Iterator<ViewPager2.OnPageChangeCallback> it = this.mCallbacks.iterator();
|
||||
while (it.hasNext()) {
|
||||
it.next().onPageScrollStateChanged(i);
|
||||
}
|
||||
} catch (ConcurrentModificationException e) {
|
||||
throwCallbackListModifiedWhileInUse(e);
|
||||
}
|
||||
}
|
||||
|
||||
private void throwCallbackListModifiedWhileInUse(ConcurrentModificationException concurrentModificationException) {
|
||||
throw new IllegalStateException("Adding and removing callbacks during dispatch to callbacks is not supported", concurrentModificationException);
|
||||
}
|
||||
}
|
||||
@ -0,0 +1,28 @@
|
||||
package androidx.viewpager2.widget;
|
||||
|
||||
import android.view.View;
|
||||
import androidx.viewpager2.widget.ViewPager2;
|
||||
import java.util.ArrayList;
|
||||
import java.util.Iterator;
|
||||
import java.util.List;
|
||||
|
||||
/* loaded from: classes.dex */
|
||||
public final class CompositePageTransformer implements ViewPager2.PageTransformer {
|
||||
private final List<ViewPager2.PageTransformer> mTransformers = new ArrayList();
|
||||
|
||||
public void addTransformer(ViewPager2.PageTransformer pageTransformer) {
|
||||
this.mTransformers.add(pageTransformer);
|
||||
}
|
||||
|
||||
public void removeTransformer(ViewPager2.PageTransformer pageTransformer) {
|
||||
this.mTransformers.remove(pageTransformer);
|
||||
}
|
||||
|
||||
@Override // androidx.viewpager2.widget.ViewPager2.PageTransformer
|
||||
public void transformPage(View view, float f) {
|
||||
Iterator<ViewPager2.PageTransformer> it = this.mTransformers.iterator();
|
||||
while (it.hasNext()) {
|
||||
it.next().transformPage(view, f);
|
||||
}
|
||||
}
|
||||
}
|
||||
94
02-Easy5/E5/sources/androidx/viewpager2/widget/FakeDrag.java
Normal file
94
02-Easy5/E5/sources/androidx/viewpager2/widget/FakeDrag.java
Normal file
@ -0,0 +1,94 @@
|
||||
package androidx.viewpager2.widget;
|
||||
|
||||
import android.os.SystemClock;
|
||||
import android.view.MotionEvent;
|
||||
import android.view.VelocityTracker;
|
||||
import android.view.ViewConfiguration;
|
||||
import androidx.recyclerview.widget.RecyclerView;
|
||||
|
||||
/* loaded from: classes.dex */
|
||||
final class FakeDrag {
|
||||
private int mActualDraggedDistance;
|
||||
private long mFakeDragBeginTime;
|
||||
private int mMaximumVelocity;
|
||||
private final RecyclerView mRecyclerView;
|
||||
private float mRequestedDragDistance;
|
||||
private final ScrollEventAdapter mScrollEventAdapter;
|
||||
private VelocityTracker mVelocityTracker;
|
||||
private final ViewPager2 mViewPager;
|
||||
|
||||
FakeDrag(ViewPager2 viewPager2, ScrollEventAdapter scrollEventAdapter, RecyclerView recyclerView) {
|
||||
this.mViewPager = viewPager2;
|
||||
this.mScrollEventAdapter = scrollEventAdapter;
|
||||
this.mRecyclerView = recyclerView;
|
||||
}
|
||||
|
||||
boolean isFakeDragging() {
|
||||
return this.mScrollEventAdapter.isFakeDragging();
|
||||
}
|
||||
|
||||
boolean beginFakeDrag() {
|
||||
if (this.mScrollEventAdapter.isDragging()) {
|
||||
return false;
|
||||
}
|
||||
this.mActualDraggedDistance = 0;
|
||||
this.mRequestedDragDistance = 0;
|
||||
this.mFakeDragBeginTime = SystemClock.uptimeMillis();
|
||||
beginFakeVelocityTracker();
|
||||
this.mScrollEventAdapter.notifyBeginFakeDrag();
|
||||
if (!this.mScrollEventAdapter.isIdle()) {
|
||||
this.mRecyclerView.stopScroll();
|
||||
}
|
||||
addFakeMotionEvent(this.mFakeDragBeginTime, 0, 0.0f, 0.0f);
|
||||
return true;
|
||||
}
|
||||
|
||||
boolean fakeDragBy(float f) {
|
||||
if (!this.mScrollEventAdapter.isFakeDragging()) {
|
||||
return false;
|
||||
}
|
||||
float f2 = this.mRequestedDragDistance - f;
|
||||
this.mRequestedDragDistance = f2;
|
||||
int round = Math.round(f2 - this.mActualDraggedDistance);
|
||||
this.mActualDraggedDistance += round;
|
||||
long uptimeMillis = SystemClock.uptimeMillis();
|
||||
boolean z = this.mViewPager.getOrientation() == 0;
|
||||
int i = z ? round : 0;
|
||||
int i2 = z ? 0 : round;
|
||||
float f3 = z ? this.mRequestedDragDistance : 0.0f;
|
||||
float f4 = z ? 0.0f : this.mRequestedDragDistance;
|
||||
this.mRecyclerView.scrollBy(i, i2);
|
||||
addFakeMotionEvent(uptimeMillis, 2, f3, f4);
|
||||
return true;
|
||||
}
|
||||
|
||||
boolean endFakeDrag() {
|
||||
if (!this.mScrollEventAdapter.isFakeDragging()) {
|
||||
return false;
|
||||
}
|
||||
this.mScrollEventAdapter.notifyEndFakeDrag();
|
||||
VelocityTracker velocityTracker = this.mVelocityTracker;
|
||||
velocityTracker.computeCurrentVelocity(1000, this.mMaximumVelocity);
|
||||
if (this.mRecyclerView.fling((int) velocityTracker.getXVelocity(), (int) velocityTracker.getYVelocity())) {
|
||||
return true;
|
||||
}
|
||||
this.mViewPager.snapToPage();
|
||||
return true;
|
||||
}
|
||||
|
||||
private void beginFakeVelocityTracker() {
|
||||
VelocityTracker velocityTracker = this.mVelocityTracker;
|
||||
if (velocityTracker == null) {
|
||||
this.mVelocityTracker = VelocityTracker.obtain();
|
||||
this.mMaximumVelocity = ViewConfiguration.get(this.mViewPager.getContext()).getScaledMaximumFlingVelocity();
|
||||
} else {
|
||||
velocityTracker.clear();
|
||||
}
|
||||
}
|
||||
|
||||
private void addFakeMotionEvent(long j, int i, float f, float f2) {
|
||||
MotionEvent obtain = MotionEvent.obtain(this.mFakeDragBeginTime, j, i, f, f2, 0);
|
||||
this.mVelocityTracker.addMovement(obtain);
|
||||
obtain.recycle();
|
||||
}
|
||||
}
|
||||
@ -0,0 +1,40 @@
|
||||
package androidx.viewpager2.widget;
|
||||
|
||||
import android.view.View;
|
||||
import android.view.ViewParent;
|
||||
import androidx.core.util.Preconditions;
|
||||
import androidx.recyclerview.widget.RecyclerView;
|
||||
import androidx.viewpager2.widget.ViewPager2;
|
||||
|
||||
/* loaded from: classes.dex */
|
||||
public final class MarginPageTransformer implements ViewPager2.PageTransformer {
|
||||
private final int mMarginPx;
|
||||
|
||||
public MarginPageTransformer(int i) {
|
||||
Preconditions.checkArgumentNonnegative(i, "Margin must be non-negative");
|
||||
this.mMarginPx = i;
|
||||
}
|
||||
|
||||
@Override // androidx.viewpager2.widget.ViewPager2.PageTransformer
|
||||
public void transformPage(View view, float f) {
|
||||
ViewPager2 requireViewPager = requireViewPager(view);
|
||||
float f2 = this.mMarginPx * f;
|
||||
if (requireViewPager.getOrientation() == 0) {
|
||||
if (requireViewPager.isRtl()) {
|
||||
f2 = -f2;
|
||||
}
|
||||
view.setTranslationX(f2);
|
||||
return;
|
||||
}
|
||||
view.setTranslationY(f2);
|
||||
}
|
||||
|
||||
private ViewPager2 requireViewPager(View view) {
|
||||
ViewParent parent = view.getParent();
|
||||
ViewParent parent2 = parent.getParent();
|
||||
if ((parent instanceof RecyclerView) && (parent2 instanceof ViewPager2)) {
|
||||
return (ViewPager2) parent2;
|
||||
}
|
||||
throw new IllegalStateException("Expected the page view to be managed by a ViewPager2 instance.");
|
||||
}
|
||||
}
|
||||
@ -0,0 +1,47 @@
|
||||
package androidx.viewpager2.widget;
|
||||
|
||||
import android.view.View;
|
||||
import androidx.recyclerview.widget.LinearLayoutManager;
|
||||
import androidx.viewpager2.widget.ViewPager2;
|
||||
import java.util.Locale;
|
||||
|
||||
/* loaded from: classes.dex */
|
||||
final class PageTransformerAdapter extends ViewPager2.OnPageChangeCallback {
|
||||
private final LinearLayoutManager mLayoutManager;
|
||||
private ViewPager2.PageTransformer mPageTransformer;
|
||||
|
||||
ViewPager2.PageTransformer getPageTransformer() {
|
||||
return this.mPageTransformer;
|
||||
}
|
||||
|
||||
@Override // androidx.viewpager2.widget.ViewPager2.OnPageChangeCallback
|
||||
public void onPageScrollStateChanged(int i) {
|
||||
}
|
||||
|
||||
@Override // androidx.viewpager2.widget.ViewPager2.OnPageChangeCallback
|
||||
public void onPageSelected(int i) {
|
||||
}
|
||||
|
||||
void setPageTransformer(ViewPager2.PageTransformer pageTransformer) {
|
||||
this.mPageTransformer = pageTransformer;
|
||||
}
|
||||
|
||||
PageTransformerAdapter(LinearLayoutManager linearLayoutManager) {
|
||||
this.mLayoutManager = linearLayoutManager;
|
||||
}
|
||||
|
||||
@Override // androidx.viewpager2.widget.ViewPager2.OnPageChangeCallback
|
||||
public void onPageScrolled(int i, float f, int i2) {
|
||||
if (this.mPageTransformer == null) {
|
||||
return;
|
||||
}
|
||||
float f2 = -f;
|
||||
for (int i3 = 0; i3 < this.mLayoutManager.getChildCount(); i3++) {
|
||||
View childAt = this.mLayoutManager.getChildAt(i3);
|
||||
if (childAt == null) {
|
||||
throw new IllegalStateException(String.format(Locale.US, "LayoutManager returned a null child at pos %d/%d while transforming pages", Integer.valueOf(i3), Integer.valueOf(this.mLayoutManager.getChildCount())));
|
||||
}
|
||||
this.mPageTransformer.transformPage(childAt, (this.mLayoutManager.getPosition(childAt) - i) + f2);
|
||||
}
|
||||
}
|
||||
}
|
||||
@ -0,0 +1,353 @@
|
||||
package androidx.viewpager2.widget;
|
||||
|
||||
import android.view.View;
|
||||
import android.view.ViewGroup;
|
||||
import androidx.recyclerview.widget.LinearLayoutManager;
|
||||
import androidx.recyclerview.widget.RecyclerView;
|
||||
import androidx.viewpager2.widget.ViewPager2;
|
||||
import java.util.Locale;
|
||||
|
||||
/* loaded from: classes.dex */
|
||||
final class ScrollEventAdapter extends RecyclerView.OnScrollListener {
|
||||
private static final int NO_POSITION = -1;
|
||||
private static final int STATE_IDLE = 0;
|
||||
private static final int STATE_IN_PROGRESS_FAKE_DRAG = 4;
|
||||
private static final int STATE_IN_PROGRESS_IMMEDIATE_SCROLL = 3;
|
||||
private static final int STATE_IN_PROGRESS_MANUAL_DRAG = 1;
|
||||
private static final int STATE_IN_PROGRESS_SMOOTH_SCROLL = 2;
|
||||
private int mAdapterState;
|
||||
private ViewPager2.OnPageChangeCallback mCallback;
|
||||
private boolean mDataSetChangeHappened;
|
||||
private boolean mDispatchSelected;
|
||||
private int mDragStartPosition;
|
||||
private boolean mFakeDragging;
|
||||
private final LinearLayoutManager mLayoutManager;
|
||||
private final RecyclerView mRecyclerView;
|
||||
private boolean mScrollHappened;
|
||||
private int mScrollState;
|
||||
private ScrollEventValues mScrollValues;
|
||||
private int mTarget;
|
||||
private final ViewPager2 mViewPager;
|
||||
|
||||
private boolean isInAnyDraggingState() {
|
||||
int i = this.mAdapterState;
|
||||
return i == 1 || i == 4;
|
||||
}
|
||||
|
||||
int getScrollState() {
|
||||
return this.mScrollState;
|
||||
}
|
||||
|
||||
boolean isDragging() {
|
||||
return this.mScrollState == 1;
|
||||
}
|
||||
|
||||
boolean isFakeDragging() {
|
||||
return this.mFakeDragging;
|
||||
}
|
||||
|
||||
boolean isIdle() {
|
||||
return this.mScrollState == 0;
|
||||
}
|
||||
|
||||
void notifyDataSetChangeHappened() {
|
||||
this.mDataSetChangeHappened = true;
|
||||
}
|
||||
|
||||
void setOnPageChangeCallback(ViewPager2.OnPageChangeCallback onPageChangeCallback) {
|
||||
this.mCallback = onPageChangeCallback;
|
||||
}
|
||||
|
||||
ScrollEventAdapter(ViewPager2 viewPager2) {
|
||||
this.mViewPager = viewPager2;
|
||||
RecyclerView recyclerView = viewPager2.mRecyclerView;
|
||||
this.mRecyclerView = recyclerView;
|
||||
this.mLayoutManager = (LinearLayoutManager) recyclerView.getLayoutManager();
|
||||
this.mScrollValues = new ScrollEventValues();
|
||||
resetState();
|
||||
}
|
||||
|
||||
private void resetState() {
|
||||
this.mAdapterState = 0;
|
||||
this.mScrollState = 0;
|
||||
this.mScrollValues.reset();
|
||||
this.mDragStartPosition = -1;
|
||||
this.mTarget = -1;
|
||||
this.mDispatchSelected = false;
|
||||
this.mScrollHappened = false;
|
||||
this.mFakeDragging = false;
|
||||
this.mDataSetChangeHappened = false;
|
||||
}
|
||||
|
||||
@Override // androidx.recyclerview.widget.RecyclerView.OnScrollListener
|
||||
public void onScrollStateChanged(RecyclerView recyclerView, int i) {
|
||||
if ((this.mAdapterState != 1 || this.mScrollState != 1) && i == 1) {
|
||||
startDrag(false);
|
||||
return;
|
||||
}
|
||||
if (isInAnyDraggingState() && i == 2) {
|
||||
if (this.mScrollHappened) {
|
||||
dispatchStateChanged(2);
|
||||
this.mDispatchSelected = true;
|
||||
return;
|
||||
}
|
||||
return;
|
||||
}
|
||||
if (isInAnyDraggingState() && i == 0) {
|
||||
updateScrollEventValues();
|
||||
if (!this.mScrollHappened) {
|
||||
if (this.mScrollValues.mPosition != -1) {
|
||||
dispatchScrolled(this.mScrollValues.mPosition, 0.0f, 0);
|
||||
}
|
||||
} else if (this.mScrollValues.mOffsetPx == 0) {
|
||||
if (this.mDragStartPosition != this.mScrollValues.mPosition) {
|
||||
dispatchSelected(this.mScrollValues.mPosition);
|
||||
}
|
||||
}
|
||||
dispatchStateChanged(0);
|
||||
resetState();
|
||||
}
|
||||
if (this.mAdapterState == 2 && i == 0 && this.mDataSetChangeHappened) {
|
||||
updateScrollEventValues();
|
||||
if (this.mScrollValues.mOffsetPx == 0) {
|
||||
if (this.mTarget != this.mScrollValues.mPosition) {
|
||||
dispatchSelected(this.mScrollValues.mPosition == -1 ? 0 : this.mScrollValues.mPosition);
|
||||
}
|
||||
dispatchStateChanged(0);
|
||||
resetState();
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
/* JADX WARN: Code restructure failed: missing block: B:9:0x001d, code lost:
|
||||
|
||||
if ((r5 < 0) == r3.mViewPager.isRtl()) goto L12;
|
||||
*/
|
||||
/* JADX WARN: Removed duplicated region for block: B:14:0x0035 */
|
||||
@Override // androidx.recyclerview.widget.RecyclerView.OnScrollListener
|
||||
/*
|
||||
Code decompiled incorrectly, please refer to instructions dump.
|
||||
To view partially-correct add '--show-bad-code' argument
|
||||
*/
|
||||
public void onScrolled(androidx.recyclerview.widget.RecyclerView r4, int r5, int r6) {
|
||||
/*
|
||||
r3 = this;
|
||||
r4 = 1
|
||||
r3.mScrollHappened = r4
|
||||
r3.updateScrollEventValues()
|
||||
boolean r0 = r3.mDispatchSelected
|
||||
r1 = -1
|
||||
r2 = 0
|
||||
if (r0 == 0) goto L39
|
||||
r3.mDispatchSelected = r2
|
||||
if (r6 > 0) goto L1f
|
||||
if (r6 != 0) goto L2b
|
||||
if (r5 >= 0) goto L16
|
||||
r5 = 1
|
||||
goto L17
|
||||
L16:
|
||||
r5 = 0
|
||||
L17:
|
||||
androidx.viewpager2.widget.ViewPager2 r6 = r3.mViewPager
|
||||
boolean r6 = r6.isRtl()
|
||||
if (r5 != r6) goto L2b
|
||||
L1f:
|
||||
androidx.viewpager2.widget.ScrollEventAdapter$ScrollEventValues r5 = r3.mScrollValues
|
||||
int r5 = r5.mOffsetPx
|
||||
if (r5 == 0) goto L2b
|
||||
androidx.viewpager2.widget.ScrollEventAdapter$ScrollEventValues r5 = r3.mScrollValues
|
||||
int r5 = r5.mPosition
|
||||
int r5 = r5 + r4
|
||||
goto L2f
|
||||
L2b:
|
||||
androidx.viewpager2.widget.ScrollEventAdapter$ScrollEventValues r5 = r3.mScrollValues
|
||||
int r5 = r5.mPosition
|
||||
L2f:
|
||||
r3.mTarget = r5
|
||||
int r6 = r3.mDragStartPosition
|
||||
if (r6 == r5) goto L47
|
||||
r3.dispatchSelected(r5)
|
||||
goto L47
|
||||
L39:
|
||||
int r5 = r3.mAdapterState
|
||||
if (r5 != 0) goto L47
|
||||
androidx.viewpager2.widget.ScrollEventAdapter$ScrollEventValues r5 = r3.mScrollValues
|
||||
int r5 = r5.mPosition
|
||||
if (r5 != r1) goto L44
|
||||
r5 = 0
|
||||
L44:
|
||||
r3.dispatchSelected(r5)
|
||||
L47:
|
||||
androidx.viewpager2.widget.ScrollEventAdapter$ScrollEventValues r5 = r3.mScrollValues
|
||||
int r5 = r5.mPosition
|
||||
if (r5 != r1) goto L4f
|
||||
r5 = 0
|
||||
goto L53
|
||||
L4f:
|
||||
androidx.viewpager2.widget.ScrollEventAdapter$ScrollEventValues r5 = r3.mScrollValues
|
||||
int r5 = r5.mPosition
|
||||
L53:
|
||||
androidx.viewpager2.widget.ScrollEventAdapter$ScrollEventValues r6 = r3.mScrollValues
|
||||
float r6 = r6.mOffset
|
||||
androidx.viewpager2.widget.ScrollEventAdapter$ScrollEventValues r0 = r3.mScrollValues
|
||||
int r0 = r0.mOffsetPx
|
||||
r3.dispatchScrolled(r5, r6, r0)
|
||||
androidx.viewpager2.widget.ScrollEventAdapter$ScrollEventValues r5 = r3.mScrollValues
|
||||
int r5 = r5.mPosition
|
||||
int r6 = r3.mTarget
|
||||
if (r5 == r6) goto L68
|
||||
if (r6 != r1) goto L78
|
||||
L68:
|
||||
androidx.viewpager2.widget.ScrollEventAdapter$ScrollEventValues r5 = r3.mScrollValues
|
||||
int r5 = r5.mOffsetPx
|
||||
if (r5 != 0) goto L78
|
||||
int r5 = r3.mScrollState
|
||||
if (r5 == r4) goto L78
|
||||
r3.dispatchStateChanged(r2)
|
||||
r3.resetState()
|
||||
L78:
|
||||
return
|
||||
*/
|
||||
throw new UnsupportedOperationException("Method not decompiled: androidx.viewpager2.widget.ScrollEventAdapter.onScrolled(androidx.recyclerview.widget.RecyclerView, int, int):void");
|
||||
}
|
||||
|
||||
private void updateScrollEventValues() {
|
||||
int top;
|
||||
ScrollEventValues scrollEventValues = this.mScrollValues;
|
||||
scrollEventValues.mPosition = this.mLayoutManager.findFirstVisibleItemPosition();
|
||||
if (scrollEventValues.mPosition == -1) {
|
||||
scrollEventValues.reset();
|
||||
return;
|
||||
}
|
||||
View findViewByPosition = this.mLayoutManager.findViewByPosition(scrollEventValues.mPosition);
|
||||
if (findViewByPosition == null) {
|
||||
scrollEventValues.reset();
|
||||
return;
|
||||
}
|
||||
int leftDecorationWidth = this.mLayoutManager.getLeftDecorationWidth(findViewByPosition);
|
||||
int rightDecorationWidth = this.mLayoutManager.getRightDecorationWidth(findViewByPosition);
|
||||
int topDecorationHeight = this.mLayoutManager.getTopDecorationHeight(findViewByPosition);
|
||||
int bottomDecorationHeight = this.mLayoutManager.getBottomDecorationHeight(findViewByPosition);
|
||||
ViewGroup.LayoutParams layoutParams = findViewByPosition.getLayoutParams();
|
||||
if (layoutParams instanceof ViewGroup.MarginLayoutParams) {
|
||||
ViewGroup.MarginLayoutParams marginLayoutParams = (ViewGroup.MarginLayoutParams) layoutParams;
|
||||
leftDecorationWidth += marginLayoutParams.leftMargin;
|
||||
rightDecorationWidth += marginLayoutParams.rightMargin;
|
||||
topDecorationHeight += marginLayoutParams.topMargin;
|
||||
bottomDecorationHeight += marginLayoutParams.bottomMargin;
|
||||
}
|
||||
int height = findViewByPosition.getHeight() + topDecorationHeight + bottomDecorationHeight;
|
||||
int width = findViewByPosition.getWidth() + leftDecorationWidth + rightDecorationWidth;
|
||||
if (this.mLayoutManager.getOrientation() == 0) {
|
||||
top = (findViewByPosition.getLeft() - leftDecorationWidth) - this.mRecyclerView.getPaddingLeft();
|
||||
if (this.mViewPager.isRtl()) {
|
||||
top = -top;
|
||||
}
|
||||
height = width;
|
||||
} else {
|
||||
top = (findViewByPosition.getTop() - topDecorationHeight) - this.mRecyclerView.getPaddingTop();
|
||||
}
|
||||
scrollEventValues.mOffsetPx = -top;
|
||||
if (scrollEventValues.mOffsetPx < 0) {
|
||||
if (new AnimateLayoutChangeDetector(this.mLayoutManager).mayHaveInterferingAnimations()) {
|
||||
throw new IllegalStateException("Page(s) contain a ViewGroup with a LayoutTransition (or animateLayoutChanges=\"true\"), which interferes with the scrolling animation. Make sure to call getLayoutTransition().setAnimateParentHierarchy(false) on all ViewGroups with a LayoutTransition before an animation is started.");
|
||||
}
|
||||
throw new IllegalStateException(String.format(Locale.US, "Page can only be offset by a positive amount, not by %d", Integer.valueOf(scrollEventValues.mOffsetPx)));
|
||||
}
|
||||
scrollEventValues.mOffset = height == 0 ? 0.0f : scrollEventValues.mOffsetPx / height;
|
||||
}
|
||||
|
||||
private void startDrag(boolean z) {
|
||||
this.mFakeDragging = z;
|
||||
this.mAdapterState = z ? 4 : 1;
|
||||
int i = this.mTarget;
|
||||
if (i != -1) {
|
||||
this.mDragStartPosition = i;
|
||||
this.mTarget = -1;
|
||||
} else if (this.mDragStartPosition == -1) {
|
||||
this.mDragStartPosition = getPosition();
|
||||
}
|
||||
dispatchStateChanged(1);
|
||||
}
|
||||
|
||||
void notifyProgrammaticScroll(int i, boolean z) {
|
||||
this.mAdapterState = z ? 2 : 3;
|
||||
this.mFakeDragging = false;
|
||||
boolean z2 = this.mTarget != i;
|
||||
this.mTarget = i;
|
||||
dispatchStateChanged(2);
|
||||
if (z2) {
|
||||
dispatchSelected(i);
|
||||
}
|
||||
}
|
||||
|
||||
void notifyBeginFakeDrag() {
|
||||
this.mAdapterState = 4;
|
||||
startDrag(true);
|
||||
}
|
||||
|
||||
void notifyEndFakeDrag() {
|
||||
if (!isDragging() || this.mFakeDragging) {
|
||||
this.mFakeDragging = false;
|
||||
updateScrollEventValues();
|
||||
if (this.mScrollValues.mOffsetPx == 0) {
|
||||
if (this.mScrollValues.mPosition != this.mDragStartPosition) {
|
||||
dispatchSelected(this.mScrollValues.mPosition);
|
||||
}
|
||||
dispatchStateChanged(0);
|
||||
resetState();
|
||||
return;
|
||||
}
|
||||
dispatchStateChanged(2);
|
||||
}
|
||||
}
|
||||
|
||||
double getRelativeScrollPosition() {
|
||||
updateScrollEventValues();
|
||||
return this.mScrollValues.mPosition + this.mScrollValues.mOffset;
|
||||
}
|
||||
|
||||
private void dispatchStateChanged(int i) {
|
||||
if ((this.mAdapterState == 3 && this.mScrollState == 0) || this.mScrollState == i) {
|
||||
return;
|
||||
}
|
||||
this.mScrollState = i;
|
||||
ViewPager2.OnPageChangeCallback onPageChangeCallback = this.mCallback;
|
||||
if (onPageChangeCallback != null) {
|
||||
onPageChangeCallback.onPageScrollStateChanged(i);
|
||||
}
|
||||
}
|
||||
|
||||
private void dispatchSelected(int i) {
|
||||
ViewPager2.OnPageChangeCallback onPageChangeCallback = this.mCallback;
|
||||
if (onPageChangeCallback != null) {
|
||||
onPageChangeCallback.onPageSelected(i);
|
||||
}
|
||||
}
|
||||
|
||||
private void dispatchScrolled(int i, float f, int i2) {
|
||||
ViewPager2.OnPageChangeCallback onPageChangeCallback = this.mCallback;
|
||||
if (onPageChangeCallback != null) {
|
||||
onPageChangeCallback.onPageScrolled(i, f, i2);
|
||||
}
|
||||
}
|
||||
|
||||
private int getPosition() {
|
||||
return this.mLayoutManager.findFirstVisibleItemPosition();
|
||||
}
|
||||
|
||||
private static final class ScrollEventValues {
|
||||
float mOffset;
|
||||
int mOffsetPx;
|
||||
int mPosition;
|
||||
|
||||
void reset() {
|
||||
this.mPosition = -1;
|
||||
this.mOffset = 0.0f;
|
||||
this.mOffsetPx = 0;
|
||||
}
|
||||
|
||||
ScrollEventValues() {
|
||||
}
|
||||
}
|
||||
}
|
||||
1122
02-Easy5/E5/sources/androidx/viewpager2/widget/ViewPager2.java
Normal file
1122
02-Easy5/E5/sources/androidx/viewpager2/widget/ViewPager2.java
Normal file
File diff suppressed because it is too large
Load Diff
Reference in New Issue
Block a user