Приложение Android сбой при подключении к Firebase

Я пытаюсь подключиться к моему приложению firebase, но приложение терпит крах, когда я инициализирую Firebase своим URL-адресом приложения.
Следующая строка дает ошибку –
Firebase myFirebaseRef = new Firebase("https://firebase-dummy.firebaseio.com/");
Это дает IllegalAccessError .

Снимок экрана с ошибкой

 package com.example.devansh.learnfirebase; import android.os.Bundle; import android.support.design.widget.FloatingActionButton; import android.support.design.widget.Snackbar; import android.support.v7.app.AppCompatActivity; import android.support.v7.widget.Toolbar; import android.view.View; import android.view.Menu; import android.view.MenuItem; import android.widget.Button; import android.widget.TextView; import com.firebase.client.DataSnapshot; import com.firebase.client.Firebase; import com.firebase.client.FirebaseError; import com.firebase.client.ValueEventListener; import com.firebase.client.utilities.DefaultRunLoop; import org.w3c.dom.Text; public class MainActivity extends AppCompatActivity { Firebase myFirebaseRef; @Override protected void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.activity_main); Firebase.setAndroidContext(this); myFirebaseRef = new Firebase("https://firebase-dummy.firebaseio.com/"); //This line is causing error Toolbar toolbar = (Toolbar) findViewById(R.id.toolbar); setSupportActionBar(toolbar); FloatingActionButton fab = (FloatingActionButton) findViewById(R.id.fab); fab.setOnClickListener(new View.OnClickListener() { @Override public void onClick(View view) { Snackbar.make(view, "Replace with your own action", Snackbar.LENGTH_LONG) .setAction("Action", null).show(); myFirebaseRef.child("message").setValue("Do you have data? You'll love Firebase."); } }); Button recieve = (Button) findViewById(R.id.button); final TextView dataStatus = (TextView) findViewById(R.id.textview); recieve.setOnClickListener(new View.OnClickListener() { @Override public void onClick(View v) { myFirebaseRef.child("message").addValueEventListener(new ValueEventListener() { @Override public void onDataChange(DataSnapshot snapshot) { dataStatus.setText("Data recieved - "+snapshot.getValue());//prints "Do you have data? You'll love Firebase." } @Override public void onCancelled(FirebaseError error) { dataStatus.setText("Data cannot be received"); } }); } }); } 

Gradle file –

 apply plugin: 'com.android.application' android { compileSdkVersion 23 buildToolsVersion "23.0.2" defaultConfig { applicationId "com.example.devansh.learnfirebase" minSdkVersion 15 targetSdkVersion 23 versionCode 1 versionName "1.0" } buildTypes { release { minifyEnabled false proguardFiles getDefaultProguardFile('proguard-android.txt'), 'proguard-rules.pro' } } packagingOptions { exclude 'META-INF/LICENSE' exclude 'META-INF/LICENSE-FIREBASE.txt' exclude 'META-INF/NOTICE' } } dependencies { compile fileTree(dir: 'libs', include: ['*.jar']) testCompile 'junit:junit:4.12' compile 'com.android.support:appcompat-v7:23.1.1' compile 'com.android.support:design:23.1.1' compile 'com.firebase:firebase-client-android:2.5.1+' } 

Вот полный текст в моем logcat –

 02-21 00:17:37.779 27073-27073/? E/Trace: error opening trace file: No such file or directory (2) 02-21 00:17:37.829 27073-27073/? W/dalvikvm: VFY: unable to find class referenced in signature (Landroid/view/SearchEvent;) 02-21 00:17:37.829 27073-27073/? W/dalvikvm: VFY: unable to resolve interface method 17988: Landroid/view/Window$Callback;.onSearchRequested (Landroid/view/SearchEvent;)Z 02-21 00:17:37.829 27073-27073/? W/dalvikvm: VFY: unable to resolve interface method 17992: Landroid/view/Window$Callback;.onWindowStartingActionMode (Landroid/view/ActionMode$Callback;I)Landroid/view/ActionMode; 02-21 00:17:37.889 27073-27073/? W/dalvikvm: VFY: unable to resolve virtual method 17884: Landroid/view/ViewGroup;.onRtlPropertiesChanged (I)V 02-21 00:17:37.889 27073-27073/? W/dalvikvm: VFY: unable to resolve virtual method 432: Landroid/content/res/TypedArray;.getChangingConfigurations ()I 02-21 00:17:37.889 27073-27073/? W/dalvikvm: VFY: unable to resolve virtual method 454: Landroid/content/res/TypedArray;.getType (I)I 02-21 00:17:37.899 27073-27073/com.example.devansh.learnfirebase W/dalvikvm: VFY: unable to resolve direct method 18504: Landroid/widget/LinearLayout$LayoutParams;.<init> (Landroid/widget/LinearLayout$LayoutParams;)V 02-21 00:17:37.899 27073-27073/com.example.devansh.learnfirebase W/dalvikvm: VFY: unable to resolve direct method 18504: Landroid/widget/LinearLayout$LayoutParams;.<init> (Landroid/widget/LinearLayout$LayoutParams;)V 02-21 00:17:37.929 27073-27073/com.example.devansh.learnfirebase W/dalvikvm: VFY: unable to resolve virtual method 30154: Ljava/util/concurrent/ScheduledThreadPoolExecutor;.setRemoveOnCancelPolicy (Z)V 02-21 00:17:37.929 27073-27073/com.example.devansh.learnfirebase W/dalvikvm: threadid=1: thread exiting with uncaught exception (group=0x40e2a468) 02-21 00:17:37.929 27073-27073/com.example.devansh.learnfirebase E/AndroidRuntime: FATAL EXCEPTION: main java.lang.IllegalAccessError: tried to access method java.util.concurrent.ScheduledThreadPoolExecutor.setRemoveOnCancelPolicy:()V from class com.firebase.client.utilities.DefaultRunLoop at com.firebase.client.utilities.DefaultRunLoop.<init>(DefaultRunLoop.java:45) at com.firebase.client.android.AndroidPlatform$1.<init>(AndroidPlatform.java:44) at com.firebase.client.android.AndroidPlatform.newRunLoop(AndroidPlatform.java:44) at com.firebase.client.core.Context.ensureRunLoop(Context.java:224) at com.firebase.client.core.Context.initServices(Context.java:111) at com.firebase.client.core.Context.freeze(Context.java:92) at com.firebase.client.core.RepoManager.getLocalRepo(RepoManager.java:55) at com.firebase.client.core.RepoManager.getRepo(RepoManager.java:19) at com.firebase.client.Firebase.<init>(Firebase.java:172) at com.firebase.client.Firebase.<init>(Firebase.java:177) at com.firebase.client.Firebase.<init>(Firebase.java:155) at com.example.devansh.learnfirebase.MainActivity.onCreate(MainActivity.java:30) at android.app.Activity.performCreate(Activity.java:5066) at android.app.Instrumentation.callActivityOnCreate(Instrumentation.java:1102) at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2311) at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2391) at android.app.ActivityThread.access$600(ActivityThread.java:151) at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1353) at android.os.Handler.dispatchMessage(Handler.java:99) at android.os.Looper.loop(Looper.java:155) at android.app.ActivityThread.main(ActivityThread.java:5559) at java.lang.reflect.Method.invokeNative(Native Method) at java.lang.reflect.Method.invoke(Method.java:511) at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:1074) at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:841) at dalvik.system.NativeStart.main(Native Method) , 02-21 00:17:37.779 27073-27073/? E/Trace: error opening trace file: No such file or directory (2) 02-21 00:17:37.829 27073-27073/? W/dalvikvm: VFY: unable to find class referenced in signature (Landroid/view/SearchEvent;) 02-21 00:17:37.829 27073-27073/? W/dalvikvm: VFY: unable to resolve interface method 17988: Landroid/view/Window$Callback;.onSearchRequested (Landroid/view/SearchEvent;)Z 02-21 00:17:37.829 27073-27073/? W/dalvikvm: VFY: unable to resolve interface method 17992: Landroid/view/Window$Callback;.onWindowStartingActionMode (Landroid/view/ActionMode$Callback;I)Landroid/view/ActionMode; 02-21 00:17:37.889 27073-27073/? W/dalvikvm: VFY: unable to resolve virtual method 17884: Landroid/view/ViewGroup;.onRtlPropertiesChanged (I)V 02-21 00:17:37.889 27073-27073/? W/dalvikvm: VFY: unable to resolve virtual method 432: Landroid/content/res/TypedArray;.getChangingConfigurations ()I 02-21 00:17:37.889 27073-27073/? W/dalvikvm: VFY: unable to resolve virtual method 454: Landroid/content/res/TypedArray;.getType (I)I 02-21 00:17:37.899 27073-27073/com.example.devansh.learnfirebase W/dalvikvm: VFY: unable to resolve direct method 18504: Landroid/widget/LinearLayout$LayoutParams;.<init> (Landroid/widget/LinearLayout$LayoutParams;)V 02-21 00:17:37.899 27073-27073/com.example.devansh.learnfirebase W/dalvikvm: VFY: unable to resolve direct method 18504: Landroid/widget/LinearLayout$LayoutParams;.<init> (Landroid/widget/LinearLayout$LayoutParams;)V 02-21 00:17:37.929 27073-27073/com.example.devansh.learnfirebase W/dalvikvm: VFY: unable to resolve virtual method 30154: Ljava/util/concurrent/ScheduledThreadPoolExecutor;.setRemoveOnCancelPolicy (Z)V 02-21 00:17:37.929 27073-27073/com.example.devansh.learnfirebase W/dalvikvm: threadid=1: thread exiting with uncaught exception (group=0x40e2a468) 02-21 00:17:37.929 27073-27073/com.example.devansh.learnfirebase E/AndroidRuntime: FATAL EXCEPTION: main java.lang.IllegalAccessError: tried to access method java.util.concurrent.ScheduledThreadPoolExecutor.setRemoveOnCancelPolicy:()V from class com.firebase.client.utilities.DefaultRunLoop at com.firebase.client.utilities.DefaultRunLoop.<init>(DefaultRunLoop.java:45) at com.firebase.client.android.AndroidPlatform$1.<init>(AndroidPlatform.java:44) at com.firebase.client.android.AndroidPlatform.newRunLoop(AndroidPlatform.java:44) at com.firebase.client.core.Context.ensureRunLoop(Context.java:224) at com.firebase.client.core.Context.initServices(Context.java:111) at com.firebase.client.core.Context.freeze(Context.java:92) at com.firebase.client.core.RepoManager.getLocalRepo(RepoManager.java:55) at com.firebase.client.core.RepoManager.getRepo(RepoManager.java:19) at com.firebase.client.Firebase.<init>(Firebase.java:172) at com.firebase.client.Firebase.<init>(Firebase.java:177) at com.firebase.client.Firebase.<init>(Firebase.java:155) at com.example.devansh.learnfirebase.MainActivity.onCreate(MainActivity.java:30) at android.app.Activity.performCreate(Activity.java:5066) at android.app.Instrumentation.callActivityOnCreate(Instrumentation.java:1102) at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2311) at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2391) at android.app.ActivityThread.access$600(ActivityThread.java:151) at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1353) at android.os.Handler.dispatchMessage(Handler.java:99) at android.os.Looper.loop(Looper.java:155) at android.app.ActivityThread.main(ActivityThread.java:5559) at java.lang.reflect.Method.invokeNative(Native Method) at java.lang.reflect.Method.invoke(Method.java:511) at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:1074) at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:841) at dalvik.system.NativeStart.main(Native Method) , 02-21 00:17:37.779 27073-27073/? E/Trace: error opening trace file: No such file or directory (2) 02-21 00:17:37.829 27073-27073/? W/dalvikvm: VFY: unable to find class referenced in signature (Landroid/view/SearchEvent;) 02-21 00:17:37.829 27073-27073/? W/dalvikvm: VFY: unable to resolve interface method 17988: Landroid/view/Window$Callback;.onSearchRequested (Landroid/view/SearchEvent;)Z 02-21 00:17:37.829 27073-27073/? W/dalvikvm: VFY: unable to resolve interface method 17992: Landroid/view/Window$Callback;.onWindowStartingActionMode (Landroid/view/ActionMode$Callback;I)Landroid/view/ActionMode; 02-21 00:17:37.889 27073-27073/? W/dalvikvm: VFY: unable to resolve virtual method 17884: Landroid/view/ViewGroup;.onRtlPropertiesChanged (I)V 02-21 00:17:37.889 27073-27073/? W/dalvikvm: VFY: unable to resolve virtual method 432: Landroid/content/res/TypedArray;.getChangingConfigurations ()I 02-21 00:17:37.889 27073-27073/? W/dalvikvm: VFY: unable to resolve virtual method 454: Landroid/content/res/TypedArray;.getType (I)I 02-21 00:17:37.899 27073-27073/com.example.devansh.learnfirebase W/dalvikvm: VFY: unable to resolve direct method 18504: Landroid/widget/LinearLayout$LayoutParams;.<init> (Landroid/widget/LinearLayout$LayoutParams;)V 02-21 00:17:37.899 27073-27073/com.example.devansh.learnfirebase W/dalvikvm: VFY: unable to resolve direct method 18504: Landroid/widget/LinearLayout$LayoutParams;.<init> (Landroid/widget/LinearLayout$LayoutParams;)V 02-21 00:17:37.929 27073-27073/com.example.devansh.learnfirebase W/dalvikvm: VFY: unable to resolve virtual method 30154: Ljava/util/concurrent/ScheduledThreadPoolExecutor;.setRemoveOnCancelPolicy (Z)V 02-21 00:17:37.929 27073-27073/com.example.devansh.learnfirebase W/dalvikvm: threadid=1: thread exiting with uncaught exception (group=0x40e2a468) 02-21 00:17:37.929 27073-27073/com.example.devansh.learnfirebase E/AndroidRuntime: FATAL EXCEPTION: main java.lang.IllegalAccessError: tried to access method java.util.concurrent.ScheduledThreadPoolExecutor.setRemoveOnCancelPolicy:()V from class com.firebase.client.utilities.DefaultRunLoop at com.firebase.client.utilities.DefaultRunLoop.<init>(DefaultRunLoop.java:45) at com.firebase.client.android.AndroidPlatform$1.<init>(AndroidPlatform.java:44) at com.firebase.client.android.AndroidPlatform.newRunLoop(AndroidPlatform.java:44) at com.firebase.client.core.Context.ensureRunLoop(Context.java:224) at com.firebase.client.core.Context.initServices(Context.java:111) at com.firebase.client.core.Context.freeze(Context.java:92) at com.firebase.client.core.RepoManager.getLocalRepo(RepoManager.java:55) at com.firebase.client.core.RepoManager.getRepo(RepoManager.java:19) at com.firebase.client.Firebase.<init>(Firebase.java:172) at com.firebase.client.Firebase.<init>(Firebase.java:177) at com.firebase.client.Firebase.<init>(Firebase.java:155) at com.example.devansh.learnfirebase.MainActivity.onCreate(MainActivity.java:30) at android.app.Activity.performCreate(Activity.java:5066) at android.app.Instrumentation.callActivityOnCreate(Instrumentation.java:1102) at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2311) at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2391) at android.app.ActivityThread.access$600(ActivityThread.java:151) at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1353) at android.os.Handler.dispatchMessage(Handler.java:99) at android.os.Looper.loop(Looper.java:155) at android.app.ActivityThread.main(ActivityThread.java:5559) at java.lang.reflect.Method.invokeNative(Native Method) at java.lang.reflect.Method.invoke(Method.java:511) at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:1074) at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:841) at dalvik.system.NativeStart.main(Native Method) 

    Версия 2.5.1 Firebase SDK для Android случайно ввела зависимость от уровня API Android 21.

    Мы работаем над исправлением. Тем временем вы можете избежать проблемы с помощью Firebase SDK 2.5.0 или с помощью устройства Android / эмулятора с уровнем API 21 или выше.

    Обновление: Firebase SDK для Android версии 2.5.2 исправляет эту проблему