database = FirebaseDatabase.getInstance(); Error

Question

I want to create an application with Firebase but when i open app it stops.

These my dependencies;

dependencies {
implementation fileTree(dir: 'libs', include: ['*.jar'])
implementation 'com.google.firebase:firebase-core:10.2.0'
implementation 'com.google.firebase:firebase-database:10.2.0'
implementation 'com.rengwuxian.materialedittext:library:2.1.4'
implementation 'com.android.support:cardview-v7:27.+'
implementation 'com.android.support:design:27.+'
implementation 'com.android.support:appcompat-v7:27.+'
implementation 'com.android.support.constraint:constraint-layout:1.1.2'
testImplementation 'junit:junit:4.12'
androidTestImplementation 'com.android.support.test:runner:1.0.2'
androidTestImplementation 'com.android.support.test.espresso:espresso-core:3.0.2'
implementation 'com.google.firebase:firebase-core:16.0.0'
}

apply plugin: 'com.google.gms.google-services'

and this is my main activity

super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);

database = FirebaseDatabase.getInstance();
users = database.getReference("Users");

edtUser=(MaterialEditText)findViewById(R.id.edtUser);
edtPassword=(MaterialEditText)findViewById(R.id.edtPassword);

when app crashes i look logcat and says that

database = FirebaseDatabase.getInstance(); error line

How can i fix this? Can you please help me?

Crash logs

java.lang.NoSuchMethodError: No virtual method zzUU()Z in class Lcom/google/firebase/FirebaseApp; or its super classes (declaration of 'com.google.firebase.FirebaseApp' appears in /data/app/com.example.cagri.kpssgenelkltrtesti-2/split_lib_dependencies_apk.apk) at com.google.firebase.database.FirebaseDatabase.getInstance(Unknown Source) at com.google.firebase.database.FirebaseDatabase.getInstance(Unknown Source) at com.example.cagri.kpssgenelkltrtesti.MainActivity.onCreate(MainActivity.java:35) at android.app.Activity.performCreate(Activity.java:6237) at android.app.Instrumentation.callActivityOnCreate(Instrumentation.java:1107) at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2369) at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2476) at android.app.ActivityThread.-wrap11(ActivityThread.java) at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1344) at android.os.Handler.dispatchMessage(Handler.java:102) at android.os.Looper.loop(Looper.java:148) at android.app.ActivityThread.main(ActivityThread.java:5417) at java.lang.reflect.Method.invoke(Native Method) at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:726) at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:616) 07-20 12:30:25.004 8100-8145/com.example.cagri.kpssgenelkltrtesti E/FirebaseInstanceId: Token retrieval failed: SERVICE_NOT_AVAILABLE 07-20 12:30:37.529 8100-8100/com.example.cagri.kpssgenelkltrtesti I/Process: Sending signal. PID: 8100 SIG: 9

Have you followed this? https://firebase.google.com/docs/android/setup Maybe you've skipped something! the root cause is that you most likely have compiled a class against a different version of the class that is missing a method, than the one you are using when running it. — Kwnstantinos Nikoloutsos, Jul 20 '18 at 13:03

score 0 · Accepted Answer · answered Jul 20 '18 at 14:32

You're mixing incompatible versions of Firebase SDKs in your project. Make sure that all versions are <16 or all versions are >= 16. E.g.

implementation 'com.google.firebase:firebase-core:16.0.1'
implementation 'com.google.firebase:firebase-database:16.0.1'
implementation 'com.rengwuxian.materialedittext:library:2.1.4'
implementation 'com.android.support:cardview-v7:27.+'
implementation 'com.android.support:design:27.+'
implementation 'com.android.support:appcompat-v7:27.+'
implementation 'com.android.support.constraint:constraint-layout:1.1.2'
testImplementation 'junit:junit:4.12'
androidTestImplementation 'com.android.support.test:runner:1.0.2'
androidTestImplementation 'com.android.support.test.espresso:espresso-core:3.0.2'

When you have this type of problem, I recommend checking out the Firebase documentation on getting started on Android.

database = FirebaseDatabase.getInstance(); Error

1 Answers1