如何在JSON數據中設置編輯文本字段中的文本

Question

這是我用過的代碼，但是當我進入頁面時，它會自動停止。我使用了抽象請求對象，它也不支持Facebook登錄。我已經使用自定義列表視圖谷爲Web服務。

public void reload() 
{ 
//final AlertDialog alertDialog = new AlertDialog.Builder(Editprofile.this).create(); 

    Log.d("url23",url23); 
    // Creating volley request obj 
    JsonArrayRequest movieReq = new JsonArrayRequest(url23, 
      new Response.Listener<JSONArray>() { 
       @Override 
       public void onResponse(JSONArray response) { 
        String TAG = null; 
       Log.d(TAG, response.toString()); 


        // Parsing json 
        for (int i = 0; i < response.length(); i++) { 
         try { 

          JSONObject obj = response.getJSONObject(i); 
         /* String fn= obj.getString("Fname"); 
          String ln= obj.getString("Lname"); 
         String em= obj.getString("email"); 
          String ph= obj.getString("phnum"); 
          String lk= obj.getString("live"); 
          String wr= obj.getString("work"); 
          String de= obj.getString("describe"); 
          Log.d("OUTPUT IS",fn);*/ 


        fname.setText(obj.getString("Fname")); 
        lname.setText(obj.getString("Lname")); 
        /* email.setText(em,TextView.BufferType.EDITABLE); 
        phone.setText(ph,TextView.BufferType.EDITABLE); 
        live.setText(lk,TextView.BufferType.EDITABLE); 
        work.setText(wr,TextView.BufferType.EDITABLE); 
        desc.setText(de,TextView.BufferType.EDITABLE);*/ 




          // adding movie to movies array 


         } catch (JSONException e) { 
          e.printStackTrace(); 
         } 

        } 

       // notifying list adapter about data changes 
        // so that it renders the list view with updated data 
        //adapter.notifyDataSetChanged(); 
       } 
      }, new Response.ErrorListener() { 
       @Override 
       public void onErrorResponse(VolleyError error) { 
        String TAG=""; 
       VolleyLog.d(TAG, "Error: " + error.getMessage()); 

       } 
      }); 

    // Adding request to request queue 
    AppController.getInstance().addToRequestQueue(movieReq); 

這裏是logcat的錯誤

10-29 08:21:34.953: D/(3631): [{"work":"software","id":76,"username":"admin123","phnum":"90000000000","image_src":"http:\/\/demo.cogzidel.com\/dropinn\/images\/no_avatar.jpg","email":"admin@gmail.com","Fname":"admin","describe":"developer","Lname":"admin123","live":"chennai"}] 
10-29 08:21:34.953: D/OUTPUT IS(3631): admin 
10-29 08:21:34.953: D/AndroidRuntime(3631): Shutting down VM 
10-29 08:21:34.953: W/dalvikvm(3631): threadid=1: thread exiting with uncaught exception (group=0xb0d0cb20) 
10-29 08:21:34.953: E/AndroidRuntime(3631): FATAL EXCEPTION: main 
10-29 08:21:34.953: E/AndroidRuntime(3631): Process: info.androidhive.customlistviewvolley, PID: 3631 
10-29 08:21:34.953: E/AndroidRuntime(3631): java.lang.NullPointerException 
10-29 08:21:34.953: E/AndroidRuntime(3631):  at com.example.dropinnnow.Editprofile$6.onResponse(Editprofile.java:690) 
10-29 08:21:34.953: E/AndroidRuntime(3631):  at com.example.dropinnnow.Editprofile$6.onResponse(Editprofile.java:1) 
10-29 08:21:34.953: E/AndroidRuntime(3631):  at com.android.volley.toolbox.JsonRequest.deliverResponse(JsonRequest.java:65) 
10-29 08:21:34.953: E/AndroidRuntime(3631):  at com.android.volley.ExecutorDelivery$ResponseDeliveryRunnable.run(ExecutorDelivery.java:99) 
10-29 08:21:34.953: E/AndroidRuntime(3631):  at android.os.Handler.handleCallback(Handler.java:733) 
10-29 08:21:34.953: E/AndroidRuntime(3631):  at android.os.Handler.dispatchMessage(Handler.java:95) 
10-29 08:21:34.953: E/AndroidRuntime(3631):  at android.os.Looper.loop(Looper.java:136) 
10-29 08:21:34.953: E/AndroidRuntime(3631):  at android.app.ActivityThread.main(ActivityThread.java:5017) 
10-29 08:21:34.953: E/AndroidRuntime(3631):  at java.lang.reflect.Method.invokeNative(Native Method) 
10-29 08:21:34.953: E/AndroidRuntime(3631):  at java.lang.reflect.Method.invoke(Method.java:515) 
10-29 08:21:34.953: E/AndroidRuntime(3631):  at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:779) 
10-29 08:21:34.953: E/AndroidRuntime(3631):  at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:595) 
10-29 08:21:34.953: E/AndroidRuntime(3631):  at dalvik.system.NativeStart.main(Native Method) 

Answer 1

試試這個，希望它可以幫助你，

fname.setText(obj.getString("Fname").toString()); 
lname.setText(obj.getString("Lname").toString());