創建內部有2個單選按鈕的對話框

Question

我想在對話框中點擊一個按鈕時創建一個對話框我需要2個單選按鈕，這些按鈕與移動默認音樂鏈接，其他則是移動設備的外部存儲器。任何人都可以幫助我，這裏是我的代碼如下？

buttonSound = (Button) findViewById(R.id.btn_sound); 
     buttonSound.setOnClickListener (new OnClickListener(){ 
      public void onClick(View v){ 
       AlertDialog.Builder alertDialogBuilder = new AlertDialog.Builder(
         getApplicationContext()); 
       Log.d("TAG","button inside mobile"); 
       alertDialogBuilder 
       //.setMessage("Click yes to exit!") 
       .setCancelable(false) 
       .setPositiveButton("Sound",new DialogInterface.OnClickListener() { 
        public void onClick(DialogInterface dialog,int id) { 
         // if this button is clicked, close 
         // current activity 
         AlarmActivity.this.finish(); 
        } 
        }); 
//    builder.setPositiveButton("Sound",); 
       alertDialogBuilder 
       //.setMessage("Click yes to exit!") 
                              .setCancelable(false) 
       .setPositiveButton("SdCard",new DialogInterface.OnClickListener() { 
        public void onClick(DialogInterface dialog,int id) { 
         // if this button is clicked, close 
         // current activity 

         Log.d("TAG","button inside sdCard"); 
         AlarmActivity.this.finish(); 
        } 
        }); 
       alertDialogBuilder.show(); 

而且它顯示如下錯誤

android.view.WindowManager$BadTokenException: Unable to add window -- token null is not for an application 

Answer 1

如下給出試試這個..

更改這個..

AlertDialog.Builder alertDialogBuilder = new AlertDialog.Builder(
         getApplicationContext()); 

到

AlertDialog.Builder alertDialogBuilder = new AlertDialog.Builder(
         AlarmActivity.this); 

編輯

radio_btn.xml

<?xml version="1.0" encoding="UTF-8"?> 
<RadioGroup xmlns:android="http://schemas.android.com/apk/res/android" 
    android:id="@+id/status_group" 
    android:layout_width="wrap_content" 
    android:layout_height="wrap_content" 
    android:layout_margin="5dp" 
    android:orientation="vertical" > 

    <RadioButton 
     android:id="@+id/default_btn" 
     android:layout_width="wrap_content" 
     android:layout_height="wrap_content" 
     android:text="Default music" /> 

    <RadioButton 
     android:id="@+id/external_btn" 
     android:layout_width="wrap_content" 
     android:layout_height="wrap_content" 
     android:text="External card music" /> 

</RadioGroup> 

JAVA

LayoutInflater inflater = getLayoutInflater(); 
    View dialoglayout = inflater.inflate(R.layout.radio_btn, (ViewGroup) getCurrentFocus()); 
    RadioButton default_btn = (RadioButton) dialoglayout.findViewById(R.id.default_btn); 
    RadioButton external_btn = (RadioButton) dialoglayout.findViewById(R.id.external_btn); 
    AlertDialog.Builder alertDialogBuilder = new AlertDialog.Builder(
         AlarmActivity.this); 
       Log.d("TAG","button inside mobile"); 
       alertDialogBuilder 
       //.setMessage("Click yes to exit!") 
       .setCancelable(false) 
       .setView(dialoglayout); 
       .setPositiveButton("OK",new DialogInterface.OnClickListener() { 
        public void onClick(DialogInterface dialog,int id) { 
         // if this button is clicked, close 
         // current activity 
         AlarmActivity.this.finish(); 
        } 
        }); 
       alertDialogBuilder.show(); 

Answer 2

使用AlarmActivity.this或本這一翻譯的getApplicationContext()。

建立在資源佈局/佈局

1. radio_dialog_layout.xml

   <RadioButton 
       android:id="@+id/rd_!" 
       android:layout_width="wrap_content" 
       android:layout_height="wrap_content" 
       android:text="A" /> 
   
   <RadioButton 
       android:id="@+id/rd_2" 
       android:layout_width="wrap_content" 
       android:layout_height="wrap_content" 
       android:layout_below="@+id/rd_!" 
       android:text="B" /> 
   
   <Button 
       android:layout_width="fill_parent" 
       android:layout_height="wrap_content" 
       android:layout_below="@+id/rd_2" 
       android:layout_centerInParent="true" 
       android:text="OK" /> 
   </RelativeLayout> 
   

2. 通過使用此代碼創建活動對話框：

   Dialog dialog = new Dialog(this); 
   dialog.setContentView(R.layout.radio_dialog_layout); 
   dialog.setTitle("This is my custom dialog box"); 
   dialog.setCancelable(true); 
   // there are a lot of settings, for dialog, check them all out! 
   // set up radiobutton 
   RadioButton rd1 = (RadioButton) dialog.findViewById(R.id.rd_); 
   RadioButton rd2 = (RadioButton) dialog.findViewById(R.id.rd_2); 
   
   // now that the dialog is set up, it's time to show it 
   dialog.show(); 
   

您也可以參考這個教程：How to add lists, Checkboxes and Radio buttons to an AlertDialog – Android

Answer 3

創建一個XML文件，

<RadioButton 
    android:id="@+id/radiobutton1" 
    android:layout_width="wrap_content" 
    android:layout_height="wrap_content" 
    android:text="Hi" /> 

<RadioButton 
    android:id="@+id/radiobutton2" 
    android:layout_width="wrap_content" 
    android:layout_height="wrap_content" 
    android:layout_below="@+id/radiobutton1" 
    android:text="Bye" /> 

<Button 
    android:layout_width="fill_parent" 
    android:layout_height="wrap_content" 
    android:layout_below="@+id/radiobutton2" 
    android:layout_centerInParent="true" 
    android:text="Click" /> 

，並在活動創建對話框，

Dialog dialog = new Dialog(MainActivity.this); 
    dialog.setContentView(R.layout.activity_main); 
    dialog.setTitle("My Dialog Box"); 
    dialog.setCancelable(true); 

    // set up radiobutton inside dialog box 
    RadioButton rb1 = (RadioButton) dialog.findViewById(R.id.radiobutton1); 
    RadioButton rb2 = (RadioButton) dialog.findViewById(R.id.radiobutton2); 

    // Show the dialog 
    dialog.show();