虽然活动可见,但我希望在从设备安装或删除媒体时通知它。不幸的是,我无法收到这些通知。我唯一能得到的是foo!
我作为一个简单的测试创建的。
public class MyActivity extends AppCompatActivity {
private BroadcastReceiver receiver = new BroadcastReceiver() {
@Override
public void onReceive(Context context, Intent intent) {
Log.e(ActivityFamily.class.getName(), intent.getAction());
}
};
@Override
protected void onResume() {
super.onResume();
IntentFilter filter = new IntentFilter();
filter.addAction("foo!");
filter.addAction(Intent.ACTION_MEDIA_EJECT);
filter.addAction(Intent.ACTION_MEDIA_REMOVED);
filter.addAction(Intent.ACTION_MEDIA_MOUNTED);
filter.addAction(Intent.ACTION_MEDIA_BAD_REMOVAL);
registerReceiver(receiver, filter);
// just added this as a test for "foo!" action
AlarmManager manager = (AlarmManager) getSystemService(Context.ALARM_SERVICE);
manager.set(AlarmManager.ELAPSED_REALTIME, SystemClock.elapsedRealtime() + 2000, PendingIntent.getBroadcast(this, 0, new Intent().setAction("foo!"), 0));
}
@Override
protected void onPause() {
super.onPause();
unregisterReceiver(receiver);
}
}
onReceive
当我从设备中删除媒体时,为什么没有被调用?
我什至尝试创建一个全新的MyReceiver.java
并在 中定义它AndroidManifest.xml
,但这也不起作用。
<receiver android:name=".MyReceiver">
<intent-filter>
<action android:name="android.intent.action.MEDIA_EJECT" />
<action android:name="android.intent.action.MEDIA_REMOVED" />
<action android:name="android.intent.action.MEDIA_MOUNTED" />
<action android:name="android.intent.action.MEDIA_BAD_REMOVAL" />
<data android:scheme="file" />
</intent-filter>
</receiver>