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我已經構建了一個聊天應用程序。它工作正常。兩個用戶都可以輕鬆地聊天 但是我得到Stuck的地方是如果一個用戶的應用程序在後臺並且屏幕關閉，用戶無法收到收到的消息的通知。顯示應用程序通過api後臺時接收到的Firebase消息的通知
我現在想要的是在我的應用程序中，當userA向userB發送消息，並且userB mobile空閒但應用程序在後臺運行時，userB可以獲得有關該消息的通知。用戶B可以打開聊天活動並閱讀消息。
我的Firebase通知正在Firebase控制檯中工作，但我不知道如何調用實例ID並將其發送到特定設備，並且特定用戶在應用程序屏幕關閉且應用程序正在運行時收到有關收到消息的通知在後臺狀態。我應該如何實現它？
我有我的火力實例ID服務類在這裏：
public class MyFirebaseInstanceIDService extends FirebaseInstanceIdService {
private static final String TAG = "MyFirebaseIIDService";
@Override
public void onTokenRefresh() {
//Getting registration token
String refreshedToken = FirebaseInstanceId.getInstance().getToken();
//Displaying token on logcat
Log.d(TAG, "Refreshed token: " + refreshedToken);
}
private void sendRegistrationToServer(String token) {
//You can implement this method to store the token on your server
//Not required for current project
}
}
這裏是我的MyFirebase消息服務類
public class MyFirebaseMessagingService extends FirebaseMessagingService {
@Override
public void onMessageReceived(RemoteMessage remoteMessage) {
if (remoteMessage.getNotification().getBody() != null) {
Log.e("FIREBASE", "Message Notification Body: " + remoteMessage.getNotification().getBody());
sendNotification(remoteMessage);
}
}
private void sendNotification(RemoteMessage remoteMessage) {
RemoteMessage.Notification notification = remoteMessage.getNotification();
Intent intent = new Intent(this, LoggedInView.class);
intent.addFlags(Intent.FLAG_ACTIVITY_CLEAR_TOP);
PendingIntent pendingIntent = PendingIntent.getActivity(this, 0, intent,
PendingIntent.FLAG_ONE_SHOT);
Uri defaultSoundUri= RingtoneManager.getDefaultUri(RingtoneManager.TYPE_NOTIFICATION);
NotificationCompat.Builder notificationBuilder = new NotificationCompat.Builder(this)
.setLargeIcon(BitmapFactory.decodeResource(getResources(),R.drawable.first_aid))
.setSmallIcon(R.drawable.first_aid)
.setContentTitle(notification.getTitle())
.setContentText(notification.getBody())
.setAutoCancel(true)
.setSound(defaultSoundUri)
.setContentIntent(pendingIntent);
NotificationManager notificationManager =
(NotificationManager) getSystemService(Context.NOTIFICATION_SERVICE);
notificationManager.notify(0, notificationBuilder.build());
}
}
這裏是我的聊天活動：
public class Chat extends AppCompatActivity {
LinearLayout layout;
ImageView sendButton,vidcall;
EditText messageArea;
ScrollView scrollView;
Firebase reference1, reference2;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.act_chat);
layout = (LinearLayout)findViewById(R.id.layout1);
sendButton = (ImageView)findViewById(R.id.sendButton);
vidcall = (ImageView)findViewById(R.id.vidBtnk);
messageArea = (EditText)findViewById(R.id.messageArea);
scrollView = (ScrollView)findViewById(R.id.scrollView);
Firebase.setAndroidContext(this);
reference1 = new Firebase("https://*******.firebaseio.com/messages/" + UserDetails.username + "_" + UserDetails.chatWith);
reference2 = new Firebase("https://*******.firebaseio.com/messages/" + UserDetails.chatWith + "_" + UserDetails.username);
sendButton.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
String messageText = messageArea.getText().toString();
if(!messageText.equals("")){
Map<String, String> map = new HashMap<String, String>();
map.put("message", messageText);
map.put("user", UserDetails.username);
reference1.push().setValue(map);
reference2.push().setValue(map);
}
messageArea.setText("");
}
});
vidcall.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
startActivity(new Intent(Chat.this, ConnectActivity.class));
}
});
reference1.addChildEventListener(new ChildEventListener() {
@Override
public void onChildAdded(DataSnapshot dataSnapshot, String s) {
Map map = dataSnapshot.getValue(Map.class);
String message = map.get("message").toString();
String userName = map.get("user").toString();
if(userName.equals(UserDetails.username)){
addMessageBox("You:-\n" + message, 1);
}
else{
addMessageBox(UserDetails.chatWith + ":-\n" + message, 2);
}
}
@Override
public void onChildChanged(DataSnapshot dataSnapshot, String s) {
}
@Override
public void onChildRemoved(DataSnapshot dataSnapshot) {
}
@Override
public void onChildMoved(DataSnapshot dataSnapshot, String s) {
}
@Override
public void onCancelled(FirebaseError firebaseError) {
}
});
}
// boolean doubleBackToExitPressedOnce = false;
@Override
public void onBackPressed() {
AlertDialog.Builder builder1 = new AlertDialog.Builder(Chat.this);
builder1.setMessage("CAUTION! -> Do Wish to End this Session");
builder1.setCancelable(true);
builder1.setPositiveButton(
"Yes",
new DialogInterface.OnClickListener() {
public void onClick(DialogInterface dialog, int id) {
finish();
dialog.cancel();
}
});
builder1.setNegativeButton(
"No",
new DialogInterface.OnClickListener() {
public void onClick(DialogInterface dialog, int id) {
dialog.cancel();
}
});
AlertDialog alert11 = builder1.create();
alert11.show();
}
public void addMessageBox(String message, int type){
TextView textView = new TextView(Chat.this);
textView.setText(message);
LinearLayout.LayoutParams lp = new LinearLayout.LayoutParams(ViewGroup.LayoutParams.MATCH_PARENT, ViewGroup.LayoutParams.WRAP_CONTENT);
lp.setMargins(0, 0, 0, 10);
textView.setLayoutParams(lp);
if(type == 1) {
textView.setBackgroundResource(R.drawable.rounded_corner1);
}
else{
textView.setBackgroundResource(R.drawable.rounded_corner2);
}
layout.addView(textView);
scrollView.fullScroll(View.FOCUS_DOWN);
}
}
我不知道如何火力通知服務融入我當前正在運行的聊天應用程序，你可以提供任何完整的例子或教程。 –
好吧我試過yor解決方案，並且能夠從firebase控制檯接收通知，但是我想將它集成到我的聊天類中 –
你想要它做什麼？ – Nahue