LocalBroadcastManager是Android Support包提供了一个工具,是用来在同一个应用内的不同组件间发送Broadcast的。
使用LocalBroadcastManager有如下好处:
- 发送的广播只会在自己App内传播,不会泄露给其他App,确保隐私数据不会泄露
- 其他App也无法向你的App发送该广播,不用担心其他App会来搞破坏
- 比系统全局广播更加高效
发送广播:
final Intent intent = new Intent(UartService.DATAUPDATA);
LocalBroadcastManager.getInstance(getActivity()).sendBroadcast(intent);
接收广播:
LocalBroadcastManager.getInstance(getActivity()).registerReceiver(
updateReceiver, makeGattUpdateIntentFilter());
private static IntentFilter makeGattUpdateIntentFilter() {
final IntentFilter intentFilter = new IntentFilter();
intentFilter.addAction(UartService.DATAUPDATA);
return intentFilter;
}
private final BroadcastReceiver updateReceiver = new BroadcastReceiver() {
public void onReceive(Context context, Intent intent) {
String action = intent.getAction();
ToastUtil.toast(getActivity(), action);
}
};