方法有望成爲類型的虛擬

我試圖用這個代碼從我的AWS移動樞紐樣本項目初始化AWSMobileClient.defaultMobileClient()到我的測試項目：方法有望成爲類型的虛擬

if (AWSMobileClient.defaultMobileClient() == null) { 
     Log.e("MainActivity", "Initializing AWS Mobile Client..."); 
     final ClientConfiguration clientConfiguration = new ClientConfiguration(); 
     clientConfiguration.setUserAgent(AWSConfiguration.AWS_MOBILEHUB_USER_AGENT); 
     final IdentityManager identityManager = new IdentityManager(getApplicationContext(), clientConfiguration); 
     final AWSMobileClient awsClient = 
       new AWSMobileClient.Builder(getApplicationContext()) 
         .withCognitoRegion(AWSConfiguration.AMAZON_COGNITO_REGION) 
         .withCognitoIdentityPoolID(AWSConfiguration.AMAZON_COGNITO_IDENTITY_POOL_ID) 
         .withIdentityManager(identityManager) 
         .withClientConfiguration(clientConfiguration) 
         .build(); 

     AWSMobileClient.setDefaultMobileClient(awsClient); 
    }

當我打開我的設備的應用程序，我在Android Studio中獲得此錯誤日誌：

09-21 13:01:34.596 28886-28886/com.intap.snspushtest E/AndroidRuntime: FATAL EXCEPTION: main 
    Process: com.intap.snspushtest, PID: 28886 
    java.lang.IncompatibleClassChangeError: The method 'java.io.File android.support.v4.content.ContextCompat.getNoBackupFilesDir(android.content.Context)' was expected to be of type virtual but instead was found to be of type direct (declaration of 'com.google.android.gms.iid.zzd' appears in /data/app/com.intap.snspushtest-1/base.apk) 
     at com.google.android.gms.iid.zzd.zzeC(Unknown Source) 
     at com.google.android.gms.iid.zzd.<init>(Unknown Source) 
     at com.google.android.gms.iid.zzd.<init>(Unknown Source) 
     at com.google.android.gms.iid.InstanceID.zza(Unknown Source) 
     at com.google.android.gms.iid.InstanceID.getInstance(Unknown Source) 
     at com.amazonaws.mobile.push.GCMTokenHelper.<init>(GCMTokenHelper.java:44) 
     at com.amazonaws.mobile.AWSMobileClient.<init>(AWSMobileClient.java:121) 
     at com.amazonaws.mobile.AWSMobileClient.<init>(AWSMobileClient.java:24) 
     at com.amazonaws.mobile.AWSMobileClient$Builder.build(AWSMobileClient.java:101) 
     at com.intap.snspushtest.MainActivity.onCreate(MainActivity.java:43) 
     at android.app.Activity.performCreate(Activity.java:6876) 
     at android.app.Instrumentation.callActivityOnCreate(Instrumentation.java:1135) 
     at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:3206) 
     at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:3349) 
     at android.app.ActivityThread.access$1100(ActivityThread.java:221) 
     at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1794) 
     at android.os.Handler.dispatchMessage(Handler.java:102) 
     at android.os.Looper.loop(Looper.java:158) 
     at android.app.ActivityThread.main(ActivityThread.java:7224) 
     at java.lang.reflect.Method.invoke(Native Method) 
     at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:1230) 
     at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:1120)

這些行如下所示。
AWSMobileClient.java:121

 this.gcmTokenHelper = new GCMTokenHelper(context, AWSConfiguration.GOOGLE_CLOUD_MESSAGING_SENDER_ID);

AWSMobileClient.java:24

public class AWSMobileClient {

AWSMobileClient.java:101

  return 
      new AWSMobileClient(applicationContext, 
           cognitoIdentityPoolID, 
           cognitoRegion, 
           identityManager, 
           clientConfiguration);

MainActivity.java:43

final AWSMobileClient awsClient = 
       new AWSMobileClient.Builder(getApplicationContext()) 
         .withCognitoRegion(AWSConfiguration.AMAZON_COGNITO_REGION) 
         .withCognitoIdentityPoolID(AWSConfiguration.AMAZON_COGNITO_IDENTITY_POOL_ID) 
         .withIdentityManager(identityManager) 
         .withClientConfiguration(clientConfiguration) 
         .build();

我真的不明白我面臨的問題，所以你能幫我嗎？

來源

2016-09-21 Ido Naveh

我將Google Play服務庫版本從9.0.0更改爲9.0.1，並將其解決。

來源

2016-09-21 10:29:19

方法有望成爲類型的虛擬

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