AWS SNS中的参数无效Android应用程序

Question

我已将AWS SNS API集成到我的Android应用程序中。当我打开我的设备上的应用程序，我得到这个错误日志：

E/AndroidRuntime: FATAL EXCEPTION: main 
                  Process: com.intap.appme, PID: 20780 
                  java.lang.RuntimeException: Unable to start activity ComponentInfo{com.intap.appme/com.intap.appme.MainActivity}: com.amazonaws.services.sns.model.InvalidParameterException: Invalid parameter: Endpoint (Service: AmazonSNS; Status Code: 400; Error Code: InvalidParameter; Request ID: e8589d7c-dec8-55e1-807f-cd16c8794be8) 
                   at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:3253) 
                   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) 
                   Caused by: com.amazonaws.services.sns.model.InvalidParameterException: Invalid parameter: Endpoint (Service: AmazonSNS; Status Code: 400; Error Code: InvalidParameter; Request ID: e8589d7c-dec8-55e1-807f-cd16c8794be8) 
                   at com.amazonaws.http.AmazonHttpClient.handleErrorResponse(AmazonHttpClient.java:712) 
                   at com.amazonaws.http.AmazonHttpClient.executeHelper(AmazonHttpClient.java:388) 
                   at com.amazonaws.http.AmazonHttpClient.execute(AmazonHttpClient.java:199) 
                   at com.amazonaws.services.sns.AmazonSNSClient.invoke(AmazonSNSClient.java:2262) 
                   at com.amazonaws.services.sns.AmazonSNSClient.subscribe(AmazonSNSClient.java:1256) 
                   at com.amazonaws.mobile.push.PushManager.subscribeToTopic(PushManager.java:251) 
                   at com.intap.appme.MainActivity.onCreate(MainActivity.java:50) 
                   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)  

日志中的代码行是那些线： PushManager.java:251（整体法）

public void subscribeToTopic(final SnsTopic topic) { 
    final SubscribeRequest request = new SubscribeRequest(); 
    request.setEndpoint(endpointArn); 
    request.setTopicArn(topic.getTopicArn()); 
    request.setProtocol(SNS_PROTOCOL_APPLICATION); 
    /* Line 251 -> */ final SubscribeResult result = sns.subscribe(request); 

    // update topic and save subscription in shared preferences 
    final String subscriptionArn = result.getSubscriptionArn(); 
    topic.setSubscriptionArn(subscriptionArn); 
    sharedPreferences.edit().putString(topic.getTopicArn(), subscriptionArn).apply(); 
} 

MainActivity.java:50

pushManager.subscribeToTopic(pushManager.getDefaultTopic()); 

我没有真正意识到我的应用程序中的无效参数是什么，所以你可以帮我吗？

Answer 1

根据日志，无效参数是端点。
为了让你能做的终点......

final CreatePlatformEndpointRequest request = new CreatePlatformEndpointRequest(); 
    request.setPlatformApplicationArn(platformApplicationArn); 
    request.setToken(gcmToken); 
    final CreatePlatformEndpointResult result = snsClient.createPlatformEndpoint(request); 

端点可以通过检索：

result.getEndpointArn();