如何在android中更新時檢查複選框？

我有一個無線電組與兩個單選按鈕（自我交付和公司交付）。在用戶選擇任何一個單選按鈕的應用程序表單。我正在獲取單選按鈕的文本，並通過使用此代碼插入到數據庫中。如何在android中更新時檢查複選框？

Form.java

radioGroup.setOnCheckedChangeListener(new OnCheckedChangeListener() { 

      @Override 
      public void onCheckedChanged(RadioGroup arg0, int arg1) { 
       // TODO Auto-generated method stub 
      selectedId = radioGroup.getCheckedRadioButtonId(); 

       // find the radiobutton by returned id 
        radioButton = (RadioButton) findViewById(selectedId); 


        if(radioButton.isChecked()){ 
         OPTIONS=radioButton.getText().toString(); 
         if(OPTIONS.equals("SelfDelivery")){ 
          deliveryAddress.setVisibility(View.GONE); 
          deliveryEdit.setVisibility(View.GONE); 


         }else{ 
          deliveryAddress.setVisibility(View.VISIBLE); 
          deliveryEdit.setVisibility(View.VISIBLE); 
         } 
        } 
      } 
     });

而用戶想編輯我創造了新的編輯屏幕，並使用代碼更新details.by形式。

EditForm.java

final String ram=extras.getString(openHelper_ob.DELIVERY_OPTIONS);// getting the option from Form.java to EditForm.java 

     OPTIONS=ram; 

     if(OPTIONS.equals("CompanyDelivery")){ 
     radioButtonCompany.setChecked(true); 
      deliveryText.setVisibility(View.VISIBLE); 
      editAddress.setVisibility(View.VISIBLE); 
     }else if(OPTIONS.equals("SelfDelivery")){ 
      radioButtonSelf.setChecked(true); 
      deliveryText.setVisibility(View.GONE); 
      editAddress.setVisibility(View.GONE); 
     } 



     radioGroup.setOnCheckedChangeListener(new OnCheckedChangeListener() { 

       @Override 
       public void onCheckedChanged(RadioGroup arg0, int arg1) { 
        // TODO Auto-generated method stub 
       selectedId = radioGroup.getCheckedRadioButtonId(); 

        // find the radiobutton by returned id 
         radioButton = (RadioButton) findViewById(selectedId); 


         if(radioButton.isChecked()){ 
          OPTIONS=radioButton.getText().toString(); 
          if(OPTIONS.equals("SelfDelivery")){ 
           deliveryText.setVisibility(View.GONE); 
           editAddress.setVisibility(View.GONE); 


          }else{ 
           deliveryText.setVisibility(View.VISIBLE); 
           editAddress.setVisibility(View.VISIBLE);  
          } 
         } 
       } 
      });

我想要做的單選按鈕真正根據用戶的選擇，而回歸到編輯頁面。例如：如果用戶選擇了公司交貨，當用戶要在交貨選項中編輯表單時，應該在編輯頁面中檢查公司交貨。

我在

radioButtonCompany.setChecked（真）得到錯誤;

的錯誤是

10-10 04:41:20.721: E/AndroidRuntime(794): FATAL EXCEPTION: main 
10-10 04:41:20.721: E/AndroidRuntime(794): java.lang.RuntimeException: Unable to start activity ComponentInfo{com.example.android/com.example.android.EditBookingForm}: java.lang.NullPointerException 
10-10 04:41:20.721: E/AndroidRuntime(794): at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2180) 
10-10 04:41:20.721: E/AndroidRuntime(794): at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2230) 
10-10 04:41:20.721: E/AndroidRuntime(794): at android.app.ActivityThread.access$600(ActivityThread.java:141) 
10-10 04:41:20.721: E/AndroidRuntime(794): at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1234) 
10-10 04:41:20.721: E/AndroidRuntime(794): at android.os.Handler.dispatchMessage(Handler.java:99) 
10-10 04:41:20.721: E/AndroidRuntime(794): at android.os.Looper.loop(Looper.java:137) 
10-10 04:41:20.721: E/AndroidRuntime(794): at android.app.ActivityThread.main(ActivityThread.java:5041) 
10-10 04:41:20.721: E/AndroidRuntime(794): at java.lang.reflect.Method.invokeNative(Native Method) 
10-10 04:41:20.721: E/AndroidRuntime(794): at java.lang.reflect.Method.invoke(Method.java:511) 
10-10 04:41:20.721: E/AndroidRuntime(794): at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:793) 
10-10 04:41:20.721: E/AndroidRuntime(794): at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:560) 
10-10 04:41:20.721: E/AndroidRuntime(794): at dalvik.system.NativeStart.main(Native Method) 
10-10 04:41:20.721: E/AndroidRuntime(794): Caused by: java.lang.NullPointerException

來源

2013-10-09 user2841300

很少去沒有logcat的打印輸出，唯一的假設，我可以做的，你有沒有發現佈局爲radioButtonCompany內適當的ID，並得到一個空指針錯誤。

或者，您正在嘗試修改UI線程之外的單選按鈕的檢查狀態，因此需要在runOnUIThread（）{}子句中包圍setChecked。但是額外的LogCat輸出將會有很大的幫助。

來源

2013-10-09 14:35:09

如何在android中更新時檢查複選框？

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