如何在 Android 中的片段上显示从 Firebase 云消息接收的数据?

Question

这是我的Firebase消息服务，用于接收带有有效负载的消息。我已成功收到消息。但是我应该如何在另一个片段上使用这些值呢？ 我有一个地图片段，想在地图上绘制收到的坐标。 public class MyFirebaseMessagingService 扩展 FirebaseMessagingService {

@Override
public void onMessageReceived(RemoteMessage remoteMessage) {
Log.d("Message Received", "From: " + remoteMessage.getFrom());

if (remoteMessage.getData().size() > 0) {
Log.d("datapayload", "Message data payload: " + remoteMessage.getData());

if (true) {
// For long-running tasks (10 seconds or more) use Firebase Job Dispatcher.
} else {
}
}
if (remoteMessage.getNotification() != null) {
Log.d("codefundonotification", "Message Notification Body: " + remoteMessage.getNotification().getBody());
}

}

}

地图片段：

public class MapFragment extends Fragment implements OnMapReadyCallback {
@Override
public void onMapReady(GoogleMap googleMap){
map=googleMap;
LatLng point=new LatLng(12.925471,77.501349);
MarkerOptions markerOptions = new MarkerOptions();
markerOptions.position(point).title("India");
map.addMarker(markerOptions);
map.moveCamera(CameraUpdateFactory.newLatLng(point));
}

Answer 1

你必须打开你的基本活动， 您可以传递一些额外的信息，以告知要打开哪个基本活动片段。

Intent mIntent = new Intent(getActivity(), MapActivity.class);
mIntent.putExtra("fragment", "MapFragment");
mIntent.putExtra("data", remoteMessage.getData());

在您的地图活动中

@Override
protected void onCreate(Bundle savedInstanceState) {
String fragment = getIntent().getStringExtra("fragment");
String data = getIntent().getStringExtra("data");
FragmentManager fragmentManager = getFragmentManager();
FragmentTransaction fragmentTransaction = fragmentManager.beginTransaction();
if (fragment != null && data!=null && fragment.equals("MapFragment")) {
Bundle bundle = new Bundle();
bundle.putString("data", data); //pass data through bundle
MapFragment mapFragment = new MapFragment();
mapFragment.setArguments(bundle);
fragmentTransaction.replace(android.R.id.content, mapFragment);
} 
else{ 
//open another fragment when the activity is not opened from notification
}
}

在地图片段上检查数据

public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
if (getArguments() != null) {
String data = getArguments().getString("data");
}
}