NumberFormatException異常：無效INT - 字符串

Question

我收到以下異常，同時試圖從解析數列中檢索號碼 - NumberFormatException異常：無效INT

我想找回號碼，然後顯示TextView的數量。我已經能夠通過字符串來實現這一點，但在編號方面存在困難。

下面是logcat的消息：

09-02 10:00:27.881: E/AndroidRuntime(1267): FATAL EXCEPTION: main 
09-02 10:00:27.881: E/AndroidRuntime(1267): Process: com.dooba.beta, PID: 1267 
09-02 10:00:27.881: E/AndroidRuntime(1267): java.lang.NumberFormatException: Invalid int: "UserAge" 
09-02 10:00:27.881: E/AndroidRuntime(1267):  at java.lang.Integer.invalidInt(Integer.java:137) 
09-02 10:00:27.881: E/AndroidRuntime(1267):  at java.lang.Integer.parse(Integer.java:374) 
09-02 10:00:27.881: E/AndroidRuntime(1267):  at java.lang.Integer.parseInt(Integer.java:365) 
09-02 10:00:27.881: E/AndroidRuntime(1267):  at java.lang.Integer.parseInt(Integer.java:331) 
09-02 10:00:27.881: E/AndroidRuntime(1267):  at com.dooba.beta.Fragment1$6.done(Fragment1.java:371) 
09-02 10:00:27.881: E/AndroidRuntime(1267):  at com.parse.FindCallback.internalDone(FindCallback.java:45) 
09-02 10:00:27.881: E/AndroidRuntime(1267):  at com.parse.FindCallback.internalDone(FindCallback.java:31) 
09-02 10:00:27.881: E/AndroidRuntime(1267):  at com.parse.Parse$5$1.run(Parse.java:891) 
09-02 10:00:27.881: E/AndroidRuntime(1267):  at android.os.Handler.handleCallback(Handler.java:733) 
09-02 10:00:27.881: E/AndroidRuntime(1267):  at android.os.Handler.dispatchMessage(Handler.java:95) 
09-02 10:00:27.881: E/AndroidRuntime(1267):  at android.os.Looper.loop(Looper.java:136) 
09-02 10:00:27.881: E/AndroidRuntime(1267):  at android.app.ActivityThread.main(ActivityThread.java:5017) 
09-02 10:00:27.881: E/AndroidRuntime(1267):  at java.lang.reflect.Method.invokeNative(Native Method) 
09-02 10:00:27.881: E/AndroidRuntime(1267):  at java.lang.reflect.Method.invoke(Method.java:515) 
09-02 10:00:27.881: E/AndroidRuntime(1267):  at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:779) 
09-02 10:00:27.881: E/AndroidRuntime(1267):  at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:595) 
09-02 10:00:27.881: E/AndroidRuntime(1267):  at dalvik.system.NativeStart.main(Native Method) 

下面是代碼

query5.findInBackground(new FindCallback<ParseUser>() { 

       @Override 
       public void done(List<ParseUser> objects,ParseException e) { 

        for(int i=0;i<objects.size();i++){ 
         // Do whatever you need to extract object from "users" 
         ParseQuery<ParseObject> query = ParseQuery.getQuery("User"); 
         query.whereNotEqualTo("objectId", ParseUser.getCurrentUser() 
           .getObjectId()); 
         // users with Gender = currentUser.Looking_Gender 
         query.whereEqualTo("Gender", userLookingGender); 
         // users with Looking_Gender = currentUser.Gender 
         query.whereEqualTo("Looking_Gender", userGender); 
         query.setLimit(1); 
         query.whereEqualTo("ActivityName", activityName); 
         query.whereGreaterThanOrEqualTo("UserAge", minimumAge); 
         query.whereLessThanOrEqualTo("UserAge", maximumAge); 

         mUserAgeRetrieved = (TextView) getActivity().findViewById(R.id.userlistage); 

         String str = "UserAge"; 
         int iage = Integer.parseInt(str); 
         mUserAgeRetrieved.setText(iage); 



        } 
     }//for loop 
       }); 

只是爲了對比，下面是我如何檢索字符串：

mUserNameRetrieved.setText(objects.get(i).get("Name").toString()); 

「UserAge」 是指解析數字列，我打電話來檢索它中的數字。

在此先感謝

Answer 1

這是什麼意思？

String str = "UserAge"; 
int iage = Integer.parseInt(str); 
mUserAgeRetrieved.setText(iage); 

顯然它會拋出一個NumberFormatException，因爲「UserAge」不是一個數字！你在這裏沒有從你的ParseQuery中檢索任何數字。

編輯： 使用mUserAgeRetrieved.setText（String.valueOf（objects.get（i）.getInt（「UserAge」）））來檢索數字。

Answer 2

你必須改變這一行：

String str = "UserAge"; 

到

String str = mUserAgeRetrieved.getText();