如何在android中更新时检查复选框？

我有一个无线电组与两个单选按钮（自我交付和公司交付）。在用户选择任何一个单选按钮的应用程序表单。我正在获取单选按钮的文本，并通过使用此代码插入到数据库中。如何在android中更新时检查复选框？

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); 
         } 
        } 
      } 
     });

而用户想编辑我创造了新的编辑屏幕，并使用代码更新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);  
          } 
         } 
       } 
      });

我想要做的单选按钮真正根据用户的选择，而回归到编辑页面。例如：如果用户选择了公司交货，当用户要在交货选项中编辑表单时，应该在编辑页面中检查公司交货。

我在

radioButtonCompany.setChecked（真）得到错误;

的错误是

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

来源

2013-10-09 user2841300

很少去没有logcat的打印输出，唯一的假设，我可以做的，你有没有发现布局为radioButtonCompany内适当的ID，并得到一个空指针错误。

或者，您正在尝试修改UI线程之外的单选按钮的检查状态，因此需要在runOnUIThread（）{}子句中包围setChecked。但是额外的LogCat输出将会有很大的帮助。

来源

2013-10-09 14:35:09

如何在android中更新时检查复选框？

回答

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