Firebase（Null Pointer Exception）でAndroidアプリがクラッシュする

Question

Androidスタジオで開発されたAndroidアプリでhttps://firebase.google.com/docs/android/setupを参照してFCMを統合しようとしています。アプリケーションの起動時に、NPEのためにクラッシュしています。

EDIT：テストするために使用
1.デバイス：サムスン注3
2. OS：5.0
3.サポートリポジトリとGoogleサービスをラインプラグインを適用するコメントのAndroid SDKに
4に更新されます。 'アプリのbuild.gradleのcom.google.gms.google-services 'はこの問題を引き起こしません。問題には何か関係があります。ここで

はlogcatです：

creating new AssetManager and set to /data/app/com.att.digitallife.pes-1/base.apk 
D/FirebaseApp: com.google.firebase.auth.FirebaseAuth is not linked. Skipping initialization. 
W/InstanceID/Rpc: Found 10017 
D/FirebaseApp: com.google.firebase.crash.FirebaseCrash is not linked. Skipping initialization. 
I/FA: App measurement is starting up, version: 9683 
I/FA: To enable debug logging run: adb shell setprop log.tag.FA VERBOSE 
I/FA: To enable faster debug mode event logging run: 
                   adb shell setprop firebase.analytics.debug-mode 

    15651-15651/com.nytshift.ergo.pas D/PAS I/FirebaseInitProvider: FirebaseApp initialization successful 
    15651-15651/com.nytshift.ergo.pas D/PAS : Service created 
15651-15651/com.nytshift.ergo.pas D/PAS  ### Service ::: onStart() 
15651-15651/com.nytshift.ergo.pas D/PAS : ###Service::Something unknown happened...null 
15651-15651/com.nytshift.ergo.pas D/PAS  D/AndroidRuntime: Shutting down VM 
15651-15651/com.nytshift.ergo.pas D/PAS E/AndroidRuntime: FATAL EXCEPTION: main 
                     Process: com.nytshift.ergo.pas, PID: 15651 
                     java.lang.NullPointerException: Attempt to invoke virtual method 'boolean com.google.android.gms.common.ConnectionResult.isSuccess()' on a null object reference 
                      at com.google.android.gms.common.internal.zze$zzi.zzh(Unknown Source) 
                      at com.google.android.gms.common.internal.zze$zzk.zzaua(Unknown Source) 
                      at com.google.android.gms.common.internal.zze$zza.zzc(Unknown Source) 
                      at com.google.android.gms.common.internal.zze$zza.zzv(Unknown Source) 
                      at com.google.android.gms.common.internal.zze$zze.zzauc(Unknown Source) 
                      at com.google.android.gms.common.internal.zze$zzd.handleMessage(Unknown Source) 
                      at android.os.Handler.dispatchMessage(Handler.java:102) 
                      at android.os.Looper.loop(Looper.java:145) 
                      at android.app.ActivityThread.main(ActivityThread.java:5942) 
                      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:1400) 
                      at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:1195) 

ここではプロジェクトのbuild.gradleです：

apply plugin: 'com.android.application' 

android { 
    compileSdkVersion 20 
    buildToolsVersion "23.0.3" 
    sourceSets { 
     main { 
      jniLibs.srcDirs = ['libs'] 
     } 

     // Move the tests to tests/java, tests/res, etc... 
     instrumentTest.setRoot('tests') 
     // Move the build types to build-types/<type> 
     // For instance, build-types/debug/java, build-types/debug/AndroidManifest.xml, ... 
     // This moves them out of them default location under src/<type>/... which would 
     // conflict with src/ being used by the main source set. 
     // Adding new build types or product flavors should be accompanied 
     // by a similar customization. 
     debug.setRoot('build-types/debug') 
     release.setRoot('build-types/release') 
    } 
    lintOptions { 
     abortOnError false 
    } 
    compileOptions { 
     sourceCompatibility JavaVersion.VERSION_1_7 
     targetCompatibility JavaVersion.VERSION_1_7 
    } 
    productFlavors { 
     x86 { 
      ndk { 
       abiFilter "x86" 
      } 
     } 
     arm { 
      ndk { 
       abiFilters "armeabi-v7a", "armeabi" 
      } 
      minSdkVersion 17 
     } 
    } 
    packagingOptions { 
     exclude 'META-INF/DEPENDENCIES' 
     exclude 'META-INF/NOTICE' 
     exclude 'META-INF/LICENSE' 
     exclude 'META-INF/license.txt' 
     exclude 'META-INF/notice.txt' 
    } 
    defaultConfig { 
     applicationId "com.nytshift.ergo.pas" 
     minSdkVersion 17 
    } 
} 

dependencies { 
    compile fileTree(dir: 'libs', include: ['*.jar']) 
    compile 'com.google.firebase:firebase-core:9.6.1' 
    compile 'com.google.firebase:firebase-messaging:9.6.1' 
} 
apply plugin: 'com.google.gms.google-services' 

FireBaseInstanceIDService.java：

buildscript { 
    repositories { 
     jcenter() 
    } 
    dependencies { 
     classpath 'com.android.tools.build:gradle:2.0.0' 
     classpath 'com.google.gms:google-services:3.0.0' 
     // NOTE: Do not place your application dependencies here; they belong 
     // in the individual module build.gradle files 
    } 
} 

allprojects { 
    repositories { 
     jcenter() 
    } 
} 

task clean(type: Delete) { 
    delete rootProject.buildDir 
} 

は、ここに私のアプリのbuild.gradleがどのように見えるかです：

問題になる可能性がどのような

<?xml version="1.0" encoding="utf-8"?> 
<manifest xmlns:android="http://schemas.android.com/apk/res/android" 
    package="com.nytshift.ergo.pas" 
    android:versionCode="7" 
    android:versionName="0.9.3"> 

    <uses-sdk android:minSdkVersion="17" /> 



    <uses-permission android:name="android.permission.CALL_PHONE" /> 
    <uses-permission android:name="android.permission.INTERNET" /> 

    <uses-permission android:name="android.permission.ACCESS_COARSE_LOCATION" /> 
    <uses-permission android:name="android.permission.ACCESS_FINE_LOCATION" /> 
    <uses-permission android:name="android.permission.READ_PHONE_STATE" /> 
    <uses-permission android:name="android.permission.WRITE_EXTERNAL_STORAGE" /> 
    <uses-permission android:name="android.permission.ACCESS_WIFI_STATE" /> 
    <uses-permission android:name="android.permission.CHANGE_WIFI_STATE" /> 
    <uses-permission android:name="android.permission.RECEIVE_BOOT_COMPLETED" /> 
    <uses-permission android:name="android.permission.WAKE_LOCK" /> 
    <uses-permission android:name="android.permission.ACCESS_NETWORK_STATE" /> 
    <uses-permission android:name="android.permission.BLUETOOTH" /> 
    <uses-permission android:name="android.permission.BLUETOOTH_ADMIN" /> 
    <uses-permission android:name="android.permission.SYSTEM_ALERT_WINDOW" /> 
    <uses-permission android:name="android.permission.READ_CONTACTS" /> 
    <uses-permission android:name="android.permission.WRITE_CONTACTS" /> 
    <uses-permission android:name="android.permission.CAMERA" /> 
    <uses-permission android:name="android.permission.MODIFY_AUDIO_SETTINGS" /> 
    <uses-permission android:name="android.permission.RECORD_AUDIO" /> 
    <uses-permission android:name="android.permission.GET_TASKS" /> 


    <uses-feature 
     android:name="android.hardware.telephony" 
     android:required="false" /> 
    <uses-feature 
     android:name="android.hardware.location" 
     android:required="false" /> 
    <uses-feature 
     android:name="android.hardware.location.network" 
     android:required="false" /> 
    <uses-feature 
     android:name="android.hardware.location.gps" 
     android:required="false" /> 
    <uses-feature 
     android:name="android.hardware.wifi" 
     android:required="false" /> 
    <uses-feature 
     android:name="android.hardware.touchscreen" 
     android:required="false" /> 
    <uses-feature 
     android:name="android.hardware.camera" 
     android:required="false" /> 
    <uses-feature 
     android:name="android.hardware.camera.front" 
     android:required="false" /> 
    <uses-feature android:name="android.hardware.camera.autofocus" /> 
    <uses-feature 
     android:glEsVersion="0x00020000" 
     android:required="true"></uses-feature> 


    <uses-permission android:name="com.google.android.c2dm.permission.RECEIVE" /> 
    <uses-permission android:name="android.permission.GET_ACCOUNTS" /> 
    <!-- *** End ZDA library *** --> 
    <uses-permission android:name="android.permission.VIBRATE" /> 
    <uses-permission android:name="android.permission.GET_ACCOUNTS" /> 
    <!-- Keeps the processor from sleeping when a message is received. --> 
    <uses-permission android:name="android.permission.WAKE_LOCK" /> 
    <uses-permission android:name="android.permission.ACCESS_NETWORK_STATE" /> 

    <uses-permission android:name="android.permission.READ_EXTERNAL_STORAGE" /> 

    <application 
     android:allowBackup="true" 
     android:hardwareAccelerated="true" 
     android:icon="@drawable/ic_launcher" 
     android:label="@string/app_name" 
     android:theme="@style/AppTheme"> 
     <receiver 
      android:name="urls for GCM receiver" 
      android:permission="com.google.android.c2dm.permission.SEND" 
      android:process=":Service"> 
      <intent-filter> 
       <action android:name="com.google.android.c2dm.intent.RECEIVE" /> 
       <action android:name="com.google.android.c2dm.intent.REGISTRATION" /> 

       <category android:name="com.nytshift.ergo.pas" /> 
      </intent-filter> 
     </receiver> 

     <activity 
      android:name=".login.SplashScreen" 
      android:launchMode="singleTask"> 
      <intent-filter> 
       <action android:name="android.intent.action.MAIN" /> 
       <category android:name="android.intent.category.LAUNCHER" /> 
      </intent-filter> 
      <intent-filter> 
       <action android:name="android.intent.action.VIEW"></action> 
       <category android:name="android.intent.category.DEFAULT"></category> 
       <category android:name="android.intent.category.BROWSABLE"></category> 


      </intent-filter> 
     </activity> 

     <service 
      android:name=".alert.Service" 
      android:label="Service"></service> 

     <receiver android:name=".zos.NotificationsHandler"> 
      <intent-filter> 
       <action android:name="urls" /> 
      </intent-filter> 
     </receiver> 


<!-- FireBase starts --> 
    <service android:name=".firebaseservice.MyFirebaseMessagingService" 
     android:enabled="true" 
     android:exported="true"> 
     <intent-filter> 
     <action android:name="com.google.firebase.MESSAGING_EVENT" /> 
     </intent-filter> 
    </service> 
    <service android:name=".firebaseservice.MyFirebaseInstanceIDService" 
     android:enabled="true" 
     android:exported="true"> 
     <intent-filter> 
      <action android:name="com.google.firebase.INSTANCE_ID_EVENT" /> 
     </intent-filter> 
    </service> 
    </application> 

</manifest> 

：

public class MyFirebaseInstanceIDService extends FirebaseInstanceIdService { 

    private static final String TAG = "MyFirebaseIIDService"; 

    /** 
    * Called if InstanceID token is updated. This may occur if the security of 
    * the previous token had been compromised. Note that this is called when the InstanceID token 
    * is initially generated so this is where you would retrieve the token. 
    */ 
    // [START refresh_token] 
    @Override 
    public void onTokenRefresh() { 
     // Get updated InstanceID token. 
     PESLog.debug("Inside onTokenRefresh****"); 
     String refreshedToken = FirebaseInstanceId.getInstance().getToken(); 
     Log.d(TAG, "Refreshed token: " + refreshedToken); 

     // If you want to send messages to this application instance or 
     // manage this apps subscriptions on the server side, send the 
     // Instance ID token to your app server. 
     sendRegistrationToServer(refreshedToken); 
    } 
    // [END refresh_token] 


    /** 
    * Persist token to third-party servers. 
    * 
    * Modify this method to associate the user's FCM InstanceID token with any server-side account 
    * maintained by your application. 
    * 
    * @param token The new token. 
    */ 
    private void sendRegistrationToServer(String token) { 
     // TODO: Implement this method to send token to your app server. 
    } 
} 

MyFirebaseMessagingService.java：

public class MyFirebaseMessagingService extends FirebaseMessagingService { 

    private static final String TAG = "MyFirebaseMsgService"; 



    public void onMessageReceived(RemoteMessage remoteMessage) { 

     Log.d(TAG, "From: " + remoteMessage.getFrom()); 

     // Check if message contains a data payload. 
     if (remoteMessage.getData().size() > 0) { 
      Log.d(TAG, "Message data payload: " + remoteMessage.getData()); 
     } 

     // Check if message contains a notification payload. 
     if (remoteMessage.getNotification() != null) { 
      Log.d(TAG, "Message Notification Body: " + remoteMessage.getNotification().getBody()); 
      //Calling method to generate notification 
      //sendNotification(remoteMessage.getNotification().getBody()); 
     } 
     Toast.makeText(getApplicationContext(), "Push notification: " + remoteMessage.getNotification().getBody(), Toast.LENGTH_LONG).show(); 

     // Also if you intend on generating your own notifications as a result of a received FCM 
     // message, here is where that should be initiated. See sendNotification method below. 
    } 
    // [END receive_message] 

    /** 
    * Create and show a simple notification containing the received FCM message. 
    * This method is only generating push notification. 
    * @param messageBody FCM message body received. 
    */ 
    private void sendNotification(String messageBody) { 
     Intent intent = new Intent(this, PESEmergencyHomeScreen.class); 
     intent.addFlags(Intent.FLAG_ACTIVITY_CLEAR_TOP); 
     PendingIntent pendingIntent = PendingIntent.getActivity(this, 0 /* Request code */, intent, 
       PendingIntent.FLAG_ONE_SHOT); 

     Uri defaultSoundUri= RingtoneManager.getDefaultUri(RingtoneManager.TYPE_NOTIFICATION); 
     NotificationCompat.Builder notificationBuilder = new NotificationCompat.Builder(this) 
       .setSmallIcon(R.drawable.androidwidget_logo) 
       .setContentTitle("FCM Message") 
       .setContentText(messageBody) 
       .setAutoCancel(true) 
       .setSound(defaultSoundUri) 
       .setContentIntent(pendingIntent); 

     NotificationManager notificationManager = 
       (NotificationManager) getSystemService(Context.NOTIFICATION_SERVICE); 

     notificationManager.notify(0 /* ID of notification */, notificationBuilder.build()); 
    } 
} 

マニフェスト？助けてください。

Answer 1

あなたのFCMの設定方法はわかりませんので、新しいプロジェクトを作成してメインアプリケーションに実装する方法を知っておくことをお勧めします。 FCMの設定はGCMよりはるかに簡単です。

複数のチュートリアルを見る必要はありません。ドキュメントに従ってください。GCMについて学ぶことは何も忘れてください。

マニフェストでGCMに関する関連するコードを削除し、このコードで置き換えると、うまくいくはずです。あなたはそれがGCMはLOLという理由だけで廃止されて、なぜFCMを受け取るためにあなたのマニフェストに受信機を必要としないなぜあなたは

 <service 
     android:name=".MyFirebaseMessagingService" 
     android:enabled="true" 
     android:exported="true"> 
     <intent-filter> 
      <action android:name="com.google.firebase.MESSAGING_EVENT" /> 
     </intent-filter> 
    </service> 
    <!-- [END firebase_service] --> 
    <!-- [START firebase_iid_service] --> 
    <service android:name=".MyFirebaseInstanceIDService"> 
     <intent-filter> 
      <action android:name="com.google.firebase.INSTANCE_ID_EVENT" /> 
     </intent-filter> 
    </service> 

を不思議に思った場合。

が捜査の日後にGoogleの-services.jsonファイル

Answer 2

を挿入することを忘れないでください、私は最終的に何がNull Pointer Exception原因となることがわかりました。プロジェクトのlibsフォルダにgoogle-play-services.jarが存在しました（他のモジュール用に追加され、FireBase用ではありません）。FireBaseに追加する
apply plugin: 'com.google.gms.google-services'と矛盾します。

は、私はこのような依存関係と同じように私のプロジェクトの libsフォルダからjarファイルを削除する必要がありました、コメントを追加しました：

compile 'com.google.android.gms:play-services:10.0.1'