RecentTabsGroupView.java 文件源码

@Override
public void onFinishInflate() {
    super.onFinishInflate();
    mDeviceIcon = (ImageView) findViewById(R.id.device_icon);
    mTimeLabel = (TextView) findViewById(R.id.time_label);
    mDeviceLabel = (TextView) findViewById(R.id.device_label);
    mExpandCollapseIcon = (ImageView) findViewById(R.id.expand_collapse_icon);

    // Create drawable for expand/collapse arrow.
    LevelListDrawable collapseIcon = new LevelListDrawable();
    collapseIcon.addLevel(DRAWABLE_LEVEL_COLLAPSED, DRAWABLE_LEVEL_COLLAPSED,
            TintedDrawable.constructTintedDrawable(getResources(), R.drawable.ic_expanded));
    TintedDrawable collapse =
            TintedDrawable.constructTintedDrawable(getResources(), R.drawable.ic_collapsed);
    collapse.setTint(
            ApiCompatibilityUtils.getColorStateList(getResources(), R.color.blue_mode_tint));
    collapseIcon.addLevel(DRAWABLE_LEVEL_EXPANDED, DRAWABLE_LEVEL_EXPANDED, collapse);
    mExpandCollapseIcon.setImageDrawable(collapseIcon);
}