修改android 12下拉 框 QuickSettings

frameworks/base/packages/SystemUI/res/values/config.xml

  <!-- The default tiles to display in QuickSettings -->
    <string name="quick_settings_tiles_default" translatable="false">
        wifi,bt,dnd,flashlight,rotation,battery,cell,airplane,night,screenrecord,custom(com.google.android.gms/.nearby.sharing.SharingTileService)
    </string>

 代码加载过程:

frameworks/base/packages/SystemUI/src/com/android/systemui/qs/QSTileHost.java

  public static List<String> getDefaultSpecs(Context context) {
        final ArrayList<String> tiles = new ArrayList<String>();

        final Resources res = context.getResources();
        final String defaultTileList = res.getString(R.string.quick_settings_tiles_default);

        tiles.addAll(Arrays.asList(defaultTileList.split(",")));
        if (Build.IS_DEBUGGABLE
                && GarbageMonitor.ADD_MEMORY_TILE_TO_DEFAULT_ON_DEBUGGABLE_BUILDS) 
       {
            tiles.add(GarbageMonitor.MemoryTile.TILE_SPEC);
        }
        return tiles;
    }