SupervisedUserContentProvider.java 文件源码

@TargetApi(Build.VERSION_CODES.LOLLIPOP)
private void createEnabledBroadcastReceiver() {
    IntentFilter restrictionsFilter = new IntentFilter(
            Intent.ACTION_APPLICATION_RESTRICTIONS_CHANGED);
    BroadcastReceiver restrictionsReceiver = new BroadcastReceiver() {
        @Override
        public void onReceive(Context context, Intent intent) {
            updateEnabledState();
        }
    };
    getContext().registerReceiver(restrictionsReceiver, restrictionsFilter);
}