NumberFormatException异常：无效INT - 字符串

Question

我收到以下异常，同时试图从解析数列中检索号码 - NumberFormatException异常：无效INT

我想找回号码，然后显示TextView的数量。我已经能够通过字符串来实现这一点，但在编号方面存在困难。

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) 

下面是代码

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 
       }); 

只是为了对比，下面是我如何检索字符串：

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

“UserAge” 是指解析数字列，我打电话来检索它中的数字。

在此先感谢

Answer 1

这是什么意思？

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

显然它会抛出一个NumberFormatException，因为“UserAge”不是一个数字！你在这里没有从你的ParseQuery中检索任何数字。

编辑： 使用mUserAgeRetrieved.setText（String.valueOf（objects.get（i）.getInt（“UserAge”）））来检索数字。

Answer 2

你必须改变这一行：

String str = "UserAge"; 

到

String str = mUserAgeRetrieved.getText();