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Home Page: https://www.youtube.com/koddev

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chatapptutorial's Introduction

ChatAppTutorial

I have deleted google-services.json. Add yours
Change Authorization:key with your key from firebase project

Implementation Guide
1 - Project
1 - Open the Project in your android studio;
2 - IMPORTANT Change the Package Name. (https://stackoverflow.com/questions/16804093/android-studio-rename-package)

2 - Firebase Panel
- Create Firebase Project (https://console.firebase.google.com/);
- Import the file google-service.json into your project
- Connect to firebase console authentication and database from your IDE (video 2)
- in firebase Storage Rules, change value of "allow read, write:" from "if request.auth != null" to "if true;" (video 12)
- For sending notification, paste your Firebase project key into your project APIService.java (video 18)
- When you change database settings, you likely will need to uninstall and reinstall apps to avoid app crashes due to app caches.

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chatapptutorial's Issues

MyFirebaseMessaging

String sented =remoteMessage.getData().get("sented");

Returns null. How do I fix it.

Contraction and freezing application

Hello there! The application was created and sent to google! 6 7 instant users. 2 to 3 seconds contraction and freezing!

code, the application is listening to the firebase database. and seems to be doing too much! He's wondering why this is!
Do you have any idea how to fix the problem?

when I write a message and a new user is added to the application. even the phone keyboard contraction and freezing!!

New Small Error in Users Freagment...!! Similar Issue, NULL pointer Exception

If Anyone Know Kindly Comment Down Here

12-24 23:51:10.230 8311-8311/com.koddev.chatapp E/AndroidRuntime: FATAL EXCEPTION: main
Process: com.koddev.chatapp, PID: 8311
java.lang.NullPointerException: Attempt to invoke virtual method 'boolean java.lang.String.equals(java.lang.Object)' on a null object reference
at com.koddev.chatapp.Fragments.UsersFragment$3.onDataChange(UsersFragment.java:122)
at com.google.android.gms.internal.firebase_database.zzfc.zza(Unknown Source:13)
at com.google.android.gms.internal.firebase_database.zzgx.zzdr(Unknown Source:2)
at com.google.android.gms.internal.firebase_database.zzhd.run(Unknown Source:71)
at android.os.Handler.handleCallback(Handler.java:790)
at android.os.Handler.dispatchMessage(Handler.java:99)
at android.os.Looper.loop(Looper.java:171)
at android.app.ActivityThread.main(ActivityThread.java:6635)
at java.lang.reflect.Method.invoke(Native Method)
at com.android.internal.os.RuntimeInit$MethodAndArgsCaller.run(RuntimeInit.java:547)
at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:823)

Application crash after loggining in

App works till I login. Then everything crash
I set up database correctly (I think) but it still crash
https://imgur.com/a/vI4ngYN
also, when I register it create users and tokens (just first user does not get token, just "online") every other user work fine.
https://imgur.com/a/LlS94PL

Its always crashing after login In or Signing Up users

Run LOG:

E/AndroidRuntime: FATAL EXCEPTION: main
Process: com.koddev.chatapp, PID: 17898
java.lang.NullPointerException: Attempt to invoke virtual method 'boolean java.lang.String.equals(java.lang.Object)' on a null object reference
at com.koddev.chatapp.Adapter.UserAdapter.onBindViewHolder(UserAdapter.java:54)
at com.koddev.chatapp.Adapter.UserAdapter.onBindViewHolder(UserAdapter.java:28)
at android.support.v7.widget.RecyclerView$Adapter.onBindViewHolder(RecyclerView.java:6673)
at android.support.v7.widget.RecyclerView$Adapter.bindViewHolder(RecyclerView.java:6714)
at android.support.v7.widget.RecyclerView$Recycler.tryBindViewHolderByDeadline(RecyclerView.java:5647)
at android.support.v7.widget.RecyclerView$Recycler.tryGetViewHolderForPositionByDeadline(RecyclerView.java:5913)
at android.support.v7.widget.RecyclerView$Recycler.getViewForPosition(RecyclerView.java:5752)
at android.support.v7.widget.RecyclerView$Recycler.getViewForPosition(RecyclerView.java:5748)
at android.support.v7.widget.LinearLayoutManager$LayoutState.next(LinearLayoutManager.java:2232)
at android.support.v7.widget.LinearLayoutManager.layoutChunk(LinearLayoutManager.java:1559)
at android.support.v7.widget.LinearLayoutManager.fill(LinearLayoutManager.java:1519)
at android.support.v7.widget.LinearLayoutManager.onLayoutChildren(LinearLayoutManager.java:614)
at android.support.v7.widget.RecyclerView.dispatchLayoutStep2(RecyclerView.java:3812)
at android.support.v7.widget.RecyclerView.dispatchLayout(RecyclerView.java:3529)
at android.support.v7.widget.RecyclerView.onLayout(RecyclerView.java:4082)
at android.view.View.layout(View.java:17727)
at android.view.ViewGroup.layout(ViewGroup.java:5578)
at android.widget.RelativeLayout.onLayout(RelativeLayout.java:1079)
at android.view.View.layout(View.java:17727)
at android.view.ViewGroup.layout(ViewGroup.java:5578)
at android.support.v4.view.ViewPager.onLayout(ViewPager.java:1769)
at android.view.View.layout(View.java:17727)
at android.view.ViewGroup.layout(ViewGroup.java:5578)
at android.widget.LinearLayout.setChildFrame(LinearLayout.java:1741)
at android.widget.LinearLayout.layoutVertical(LinearLayout.java:1585)
at android.widget.LinearLayout.onLayout(LinearLayout.java:1494)
at android.view.View.layout(View.java:17727)
at android.view.ViewGroup.layout(ViewGroup.java:5578)
at android.widget.FrameLayout.layoutChildren(FrameLayout.java:323)
at android.widget.FrameLayout.onLayout(FrameLayout.java:261)
at android.view.View.layout(View.java:17727)
at android.view.ViewGroup.layout(ViewGroup.java:5578)
at android.widget.LinearLayout.setChildFrame(LinearLayout.java:1741)
at android.widget.LinearLayout.layoutVertical(LinearLayout.java:1585)
at android.widget.LinearLayout.onLayout(LinearLayout.java:1494)
at android.view.View.layout(View.java:17727)
at android.view.ViewGroup.layout(ViewGroup.java:5578)
at android.widget.FrameLayout.layoutChildren(FrameLayout.java:323)
at android.widget.FrameLayout.onLayout(FrameLayout.java:261)
at android.view.View.layout(View.java:17727)
at android.view.ViewGroup.layout(ViewGroup.java:5578)
at android.widget.LinearLayout.setChildFrame(LinearLayout.java:1741)
at android.widget.LinearLayout.layoutVertical(LinearLayout.java:1585)
at android.widget.LinearLayout.onLayout(LinearLayout.java:1494)
at android.view.View.layout(View.java:17727)
at android.view.ViewGroup.layout(ViewGroup.java:5578)
at android.widget.FrameLayout.layoutChildren(FrameLayout.java:323)
at android.widget.FrameLayout.onLayout(FrameLayout.java:261)
at com.android.internal.policy.DecorView.onLayout(DecorView.java:726)
at android.view.View.layout(View.java:17727)
at android.view.ViewGroup.layout(ViewGroup.java:5578)
at android.view.ViewRootImpl.performLayout(ViewRootImpl.java:2437)
at android.view.ViewRootImpl.performTraversals(ViewRootImpl.java:2126)
at android.view.ViewRootImpl.doTraversal(ViewRootImpl.java:1312)
at android.view.ViewRootImpl$TraversalRunnable.run(ViewRootImpl.java:6578)
at android.view.Choreographer$CallbackRecord.run(Choreographer.java:874)
at android.view.Choreographer.doCallbacks(Choreographer.java:686)
at android.view.Choreographer.doFrame(Choreographer.java:621)
at android.view.Choreographer$FrameDisplayEventReceiver.run(Choreographer.java:860)
at android.os.Handler.handleCallback(Handler.java:751)
at android.os.Handler.dispatchMessage(Handler.java:95)
at android.os.Looper.loop(Looper.java:154)
at android.app.ActivityThread.main(ActivityThread.java:6165)
at java.lang.reflect.Method.invoke(Native Method)
at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:933)
at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:823)
I/FirebaseAuth: [FirebaseAuth:] Loading module via FirebaseOptions.
[FirebaseAuth:] Preparing to create service connection to gms implementation
Process 17898 terminated.

pls what can i do.

Can't resolve FirebaseInstanceIdService

MyFirebaseIdService extends FirebaseInstanceIdService showing resolve symbol error.

java.lang.NullPointerException: Attempt to invoke virtual method 'boolean java.lang.String.equals(java.lang.Object)' on a null object reference

first of all , thanks for your help I loved your videos and your code ;
I have this problem :

the problem comes from User Class every time User class interact with snapshot app will crash also the app crash in this point

i hope that you can help me
thanks

L

My App is crashing

Hi everyone.
when i use the code
Intent intent = new Intent(mContext, MessageActivity.class);
intent.putExtra("userid", user.getId());
mContext.startActivity(intent);

my app is crashing what i am doing wrong .......

MSG_TYPE_RIGHT AND MSG_TYPE_LEFT are cannot be used

App crash while reopen after using User fragment or Profile Fragment

When I close app directly from User or Profile Fragment and reopen the MainActivity It crash the app.

hello, the message screen is not active!!

I can get APK. After logging in the blank screen is coming! No error

http://resimag.com/p1/4e276d06da.png

hi crash report

java.lang.NullPointerException: Attempt to invoke virtual method 'boolean java.lang.String.equals(java.lang.Object)' on a null object reference at com.koddev.chatapp.Fragments.UsersFragment$3.onDataChange(UsersFragment.java:122)
at com.google.android.gms.internal.firebase_database.zzfc.zza(Unknown Source)
at com.google.android.gms.internal.firebase_database.zzgx.zzdr(Unknown Source)
at com.google.android.gms.internal.firebase_database.zzhd.run(Unknown Source)
at android.os.Handler.handleCallback(Handler.java:815)
at android.os.Handler.dispatchMessage(Handler.java:104)
at android.os.Looper.loop(Looper.java:214)
at android.app.ActivityThread.main(ActivityThread.java:6102)
at java.lang.reflect.Method.invoke(Native Method)
at java.lang.reflect.Method.invoke(Method.java:372)
at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:1028)
at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:823)