Broadcast Receiver注意事项

静态登记

<receiver
    android:name=".MyReceiver" android:enabled="true">
    <intent-filter>
        <action android:name="myAction" />
    </intent-filter>
</receiver>

动态注冊

@Override
protected void onStart() {
    super.onStart();
    IntentFilter intentFilter = new IntentFilter();
    intentFilter.addAction("myAction");
    registerReceiver(myReceiver, intentFilter);
}
@Override
protected void onPause() {
    super.onPause();
    unregisterReceiver(myReceiver);
}

发送广播

Intent intent = new Intent();
intent.setAction("myAction");
sendBroadcast(intent);

注意事项:

假设没有加入IntentFilter的Action。那么BroadcastReceiver将的onReceive(Context context, Intent intent)将收不到通知。除非你在发送的时候指明的详细的Class:

Intent intent = new Intent(MyActivity.this,MyReceiver.class);
sendBroadcast(intent);