java - Android notification is not showing it's content when app is not running -

here interesting problem. android notification comes gcm not showing title , content (just shows app name, , when click, open mainactivity) when app not running.

but when app open, it's showing successfully title , content. can problem? running without problem , didn't change anything.

manifest:

 <uses-permission android:name="android.permission.internet" />     <uses-permission android:name="android.permission.write_external_storage" />     <uses-permission android:name="android.permission.access_network_state" />     <uses-permission android:name="android.permission.access_phone_state" />     <uses-permission android:name="android.permission.access_wifi_state" />     <uses-permission android:name="android.permission.internet" />     <uses-permission android:name="android.permission.wake_lock" />     <uses-permission android:name="android.permission.vibrate" />     <uses-permission android:name="com.google.android.c2dm.permission.receive" />     <uses-permission android:name="com.package.xxx.permission.c2d_message" />     <permission android:name="com.package.xxx.permission.c2d_message" android:protectionlevel="signature" /> 

    <receiver         android:name="com.google.android.gms.gcm.gcmreceiver"         android:exported="true"         android:permission="com.google.android.c2dm.permission.send" >         <intent-filter>             <action android:name="com.google.android.c2dm.intent.receive" />             <action android:name="com.google.android.c2dm.intent.registration" />             <category android:name="com.package.xxx" />         </intent-filter>     </receiver>      <service         android:name=".service.gcmservice"         android:exported="false" >         <intent-filter>             <action android:name="com.google.android.c2dm.intent.receive" />         </intent-filter>     </service> 

gcmservice.java:

import android.app.notificationmanager; import android.app.pendingintent; import android.content.context; import android.content.intent; import android.os.bundle; import android.support.v4.app.notificationcompat; import android.text.textutils; import android.util.log;  import com.google.android.gms.gcm.gcmlistenerservice; import com.package.xxx.activity.readnormal; import com.package.xxx.r;   public class gcmservice extends gcmlistenerservice {      public gcmservice() {      }      @override     public void onmessagereceived(string from, bundle data) {          log.d("gcmservice", data.tostring());          string type = data.getstring("type", "");          if(type.equals("news")) {            shownewsnotification(data);         }      }      private void shownewsnotification(bundle data) {          string neid = data.getstring("neid");          if(textutils.isempty(neid)) {             return;         }          int id = integer.valueof(neid);          notificationcompat.builder mbuilder =   new notificationcompat.builder(this)                 .setcontenttitle(data.getstring("neti"))                 .setcontenttext("click read more.")                 .setsmallicon(r.drawable.ic_launcher)                 .setautocancel(true);          intent = new intent();         i.putextra("nesi", data.getstring("nesi"));         i.putextra("neur", data.getstring("neur"));         i.putextra("neti", data.getstring("neti"));         i.putextra("neim", data.getstring("neim"));         i.putextra("neid", id);         i.setclass(this, readnormal.class);         i.setflags(intent.flag_activity_new_task);          /***/         pendingintent pi = pendingintent.getactivity(getapplicationcontext(), 0, i, pendingintent.flag_update_current);         mbuilder.setcontentintent(pi);          notificationmanager mnotificationmanager = (notificationmanager) getsystemservice(context.notification_service);         mnotificationmanager.notify(0, mbuilder.build());      }      @override     public void ondeletedmessages() {      }      @override     public void onmessagesent(string msgid) {     }      @override     public void onsenderror(string msgid, string error) {     } 

thank you.

logs when app running.

 d/gcmservice: bundle[{neid=4663755, neim=http://icdn.posta.com.tr/editor/hd/30/1/2016/fft2mm7549077.jpg, nesi=posta, neti=erdoğan: rusya sonucuna katlanır, neur=http://www.posta.com.tr/turkiye/haberdetay/erdogan--rusya-sonucuna-katlanir.htm?articleid=324647, type=news, notification=bundle[{e=1}], collapse_key=com.tekmobil.guncelhaber}] 

logs when app not running.

(empty, there no log) 

found problem. using 8.4.0 version (up-to-date) of play services.

compile 'com.google.android.gms:play-services-gcm:8.4.0' //gcm 

i reduced version 8.3.0. works expected.