SwitchViewHolder.java 文件源码

private void updateColor() {
    Drawable leftDrawable = name.getCompoundDrawablesRelative()[0];
    String domain = entity.getDomain();
    if (leftDrawable != null && (domain.equals(LIGHT) || domain.equals(SWITCH))) {
        if (!(leftDrawable instanceof LevelListDrawable)) {
            LevelListDrawable levelListDrawable = new LevelListDrawable();
            // Add states
            levelListDrawable.addLevel(1, 1, leftDrawable);
            BitmapDrawable enabledDrawable = (BitmapDrawable) leftDrawable.getConstantState().newDrawable().mutate();
            enabledDrawable.setTintList(ColorStateList.valueOf(ContextCompat.getColor(name.getContext(), R.color.color_activated)));
            levelListDrawable.addLevel(2, 2, enabledDrawable);
            // Restore bounds
            levelListDrawable.setBounds(0, 0, name.getResources().getDimensionPixelSize(R.dimen.icon_size), name.getResources().getDimensionPixelSize(R.dimen.icon_size));

            // Set drawable
            name.setCompoundDrawablesRelative(levelListDrawable, null, null, null);
            leftDrawable = levelListDrawable;
        }
        leftDrawable.setLevel(entity.state.equals(HassUtils.getOnState(entity, false)) ? 1 : 2);
    }
}