Android 广播BroadcastReceiver

一、全局广播动态使用

 1、注册广播

 

BroadcastReceiver receiver= new BroadcastReceiver() {
    @Override
    public void onReceive(Context context, Intent intent) {
        if (intent.getAction().equals(Constants.BD_EXIT_APP)) {
            finish();
        }
    }
};
IntentFilter filter = new IntentFilter();
filter.addAction(Constants.BD_EXIT_APP);
registerReceiver(receiver, filter);

2、发送广播

 

Intent intent = new Intent();
intent.setAction(Constants.BD_EXIT_APP);
sendBroadcast(intent);

3、注销广播

@Override
protected void onDestroy() {
    super.onDestroy();
    if (receiver!= null) {
        unregisterReceiver(receiver);
    }
}