I have a created a Firebase application using the tutorial given here. As I am a beginner to Android, please help me solving this. My app has a only one activity.
When I send a message from my Firebase console, I am able to see the message and the toast on screen when the app is open. However, if the app is not running, I am able to see the notification from Firebase in Notifications Bar but on clicking it neither the toast comes or the message gets shown on the screen. Everything works well only for the very first time the app is installed. How can I solve this problem? Kindly help. Below are my codes:
Activity_main.xml:
<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:tools="http://schemas.android.com/tools"
android:id="@+id/activity_main"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:paddingBottom="@dimen/activity_vertical_margin"
android:paddingLeft="@dimen/activity_horizontal_margin"
android:paddingRight="@dimen/activity_horizontal_margin"
android:paddingTop="@dimen/activity_vertical_margin"
tools:context="com.unss.pramod.firebasetest.activity.MainActivity">
<TextView
android:id="@+id/txt_push_message"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_alignParentTop="true"
android:layout_centerHorizontal="true"
android:layout_marginTop="40dp"
android:gravity="center_horizontal"
android:textColor="@color/colorPrimary"
android:textSize="26dp" />
<TextView
android:id="@+id/txt_reg_id"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_alignParentBottom="true" />
</RelativeLayout>
Main Activity.java
public class MainActivity extends AppCompatActivity {
private static final String TAG = MainActivity.class.getSimpleName();
private BroadcastReceiver mRegistrationBroadcastReceiver;
private TextView txtRegId, txtMessage;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
txtRegId = (TextView) findViewById(R.id.txt_reg_id);
txtMessage = (TextView) findViewById(R.id.txt_push_message);
mRegistrationBroadcastReceiver = new BroadcastReceiver() {
@Override
public void onReceive(Context context, Intent intent) {
// checking for type intent filter
if (intent.getAction().equals(Config.REGISTRATION_COMPLETE)) {
// gcm successfully registered
// now subscribe to `global` topic to receive app wide notifications
FirebaseMessaging.getInstance().subscribeToTopic(Config.TOPIC_GLOBAL);
displayFirebaseRegId();
} else if (intent.getAction().equals(Config.PUSH_NOTIFICATION)) {
// new push notification is received
String message = intent.getStringExtra("message");
Toast.makeText(getApplicationContext(), "Push notification: " + message, Toast.LENGTH_LONG).show();
txtMessage.setText(message);
}
}
};
displayFirebaseRegId();
}
// Fetches reg id from shared preferences
// and displays on the screen
private void displayFirebaseRegId() {
SharedPreferences pref = getApplicationContext().getSharedPreferences(Config.SHARED_PREF, 0);
String regId = pref.getString("regId", null);
Log.e(TAG, "Firebase reg id: " + regId);
if (!TextUtils.isEmpty(regId))
txtRegId.setText("Firebase Reg Id: " + regId);
else
txtRegId.setText("Firebase Reg Id is not received yet!");
}
@Override
protected void onResume() {
super.onResume();
// register GCM registration complete receiver
LocalBroadcastManager.getInstance(this).registerReceiver(mRegistrationBroadcastReceiver,
new IntentFilter(Config.REGISTRATION_COMPLETE));
// register new push message receiver
// by doing this, the activity will be notified each time a new message arrives
LocalBroadcastManager.getInstance(this).registerReceiver(mRegistrationBroadcastReceiver,
new IntentFilter(Config.PUSH_NOTIFICATION));
// clear the notification area when the app is opened
NotificationUtils.clearNotifications(getApplicationContext());
}
@Override
protected void onPause() {
LocalBroadcastManager.getInstance(this).unregisterReceiver(mRegistrationBroadcastReceiver);
super.onPause();
}
}
Firebase Instance ID service.java
public class MyFirebaseInstanceIDService extends FirebaseInstanceIdService {
private static final String TAG = MyFirebaseInstanceIDService.class.getSimpleName();
@Override
public void onTokenRefresh() {
super.onTokenRefresh();
String refreshedToken = FirebaseInstanceId.getInstance().getToken();
// Saving reg id to shared preferences
storeRegIdInPref(refreshedToken);
// sending reg id to your server
sendRegistrationToServer(refreshedToken);
// Notify UI that registration has completed, so the progress indicator can be hidden.
Intent registrationComplete = new Intent(Config.REGISTRATION_COMPLETE);
registrationComplete.putExtra("token", refreshedToken);
LocalBroadcastManager.getInstance(this).sendBroadcast(registrationComplete);
}
private void sendRegistrationToServer(final String token) {
// sending gcm token to server
Log.e(TAG, "sendRegistrationToServer: " + token);
}
private void storeRegIdInPref(String token) {
SharedPreferences pref = getApplicationContext().getSharedPreferences(Config.SHARED_PREF, 0);
SharedPreferences.Editor editor = pref.edit();
editor.putString("regId", token);
editor.commit();
}
}
Firebase messaging service.java
public class MyFirebaseMessagingService extends FirebaseMessagingService {
private static final String TAG = MyFirebaseMessagingService.class.getSimpleName();
private NotificationUtils notificationUtils;
@Override
public void onMessageReceived(RemoteMessage remoteMessage) {
Log.e(TAG, "From: " + remoteMessage.getFrom());
if (remoteMessage == null)
return;
// Check if message contains a notification payload.
if (remoteMessage.getNotification() != null) {
Log.e(TAG, "Notification Body: " + remoteMessage.getNotification().getBody());
handleNotification(remoteMessage.getNotification().getBody());
}
// Check if message contains a data payload.
if (remoteMessage.getData().size() > 0) {
Log.e(TAG, "Data Payload: " + remoteMessage.getData().toString());
try {
JSONObject json = new JSONObject(remoteMessage.getData().toString());
handleDataMessage(json);
} catch (Exception e) {
Log.e(TAG, "Exception: " + e.getMessage());
}
}
}
private void handleNotification(String message) {
if (!NotificationUtils.isAppIsInBackground(getApplicationContext())) {
// app is in foreground, broadcast the push message
Intent pushNotification = new Intent(Config.PUSH_NOTIFICATION);
pushNotification.putExtra("message", message);
LocalBroadcastManager.getInstance(this).sendBroadcast(pushNotification);
// play notification sound
NotificationUtils notificationUtils = new NotificationUtils(getApplicationContext());
notificationUtils.playNotificationSound();
}else{
// If the app is in background, firebase itself handles the notification
}
}
private void handleDataMessage(JSONObject json) {
Log.e(TAG, "push json: " + json.toString());
try {
JSONObject data = json.getJSONObject("data");
String title = data.getString("title");
String message = data.getString("message");
boolean isBackground = data.getBoolean("is_background");
String imageUrl = data.getString("image");
String timestamp = data.getString("timestamp");
JSONObject payload = data.getJSONObject("payload");
Log.e(TAG, "title: " + title);
Log.e(TAG, "message: " + message);
Log.e(TAG, "isBackground: " + isBackground);
Log.e(TAG, "payload: " + payload.toString());
Log.e(TAG, "imageUrl: " + imageUrl);
Log.e(TAG, "timestamp: " + timestamp);
if (!NotificationUtils.isAppIsInBackground(getApplicationContext())) {
// app is in foreground, broadcast the push message
Intent pushNotification = new Intent(Config.PUSH_NOTIFICATION);
pushNotification.putExtra("message", message);
LocalBroadcastManager.getInstance(this).sendBroadcast(pushNotification);
// play notification sound
NotificationUtils notificationUtils = new NotificationUtils(getApplicationContext());
notificationUtils.playNotificationSound();
} else {
// app is in background, show the notification in notification tray
Intent resultIntent = new Intent(getApplicationContext(), MainActivity.class);
resultIntent.putExtra("message", message);
// check for image attachment
if (TextUtils.isEmpty(imageUrl)) {
showNotificationMessage(getApplicationContext(), title, message, timestamp, resultIntent);
} else {
// image is present, show notification with image
showNotificationMessageWithBigImage(getApplicationContext(), title, message, timestamp, resultIntent, imageUrl);
}
}
} catch (JSONException e) {
Log.e(TAG, "Json Exception: " + e.getMessage());
} catch (Exception e) {
Log.e(TAG, "Exception: " + e.getMessage());
}
}
/**
* Showing notification with text only
*/
private void showNotificationMessage(Context context, String title, String message, String timeStamp, Intent intent) {
notificationUtils = new NotificationUtils(context);
intent.setFlags(Intent.FLAG_ACTIVITY_NEW_TASK | Intent.FLAG_ACTIVITY_CLEAR_TASK);
notificationUtils.showNotificationMessage(title, message, timeStamp, intent);
}
/**
* Showing notification with text and image
*/
private void showNotificationMessageWithBigImage(Context context, String title, String message, String timeStamp, Intent intent, String imageUrl) {
notificationUtils = new NotificationUtils(context);
intent.setFlags(Intent.FLAG_ACTIVITY_NEW_TASK | Intent.FLAG_ACTIVITY_CLEAR_TASK);
notificationUtils.showNotificationMessage(title, message, timeStamp, intent, imageUrl);
}
}
Config.java
public class Config {
// global topic to receive app wide push notifications
public static final String TOPIC_GLOBAL = "global";
// broadcast receiver intent filters
public static final String REGISTRATION_COMPLETE = "registrationComplete";
public static final String PUSH_NOTIFICATION = "pushNotification";
// id to handle the notification in the notification tray
public static final int NOTIFICATION_ID = 100;
public static final int NOTIFICATION_ID_BIG_IMAGE = 101;
public static final String SHARED_PREF = "ah_firebase";
}
Kindly help in solving this problem.
The onMessageReceived method will be called only when your application is opened/foreground when you send "Notification type message". If want to run onMessageReceived either your application in close then send "Data message". Click here to learn more about data message. Send data notification from server.
JSON sample for data message taken from https://stackoverflow.com/a/38795553/3529309
{
"to": "/topics/dev_journal",
"data": {
"text":"text",
"title":"",
"line1":"Journal",
"line2":"test"
}
}
Use push.php class from tutorial link you mentioned to send data message.