AlertDialog到DialogFragment

Question

确定方法的ShowDialog（INT，束）从活动类型已过时。所以我已经改变了我的timePicker到fragmentDialog因为fragmentDialog编写这是很容易：

new TimePickerDialog(getActivity(),_listener, _hour, _minute,dateFormat); 

但是，我怎么能重拍我的这种类型的对话框fragmentDialog？

AlertDialog.Builder 
     .setIcon() 
     .setTitle() 
     .setPositiveButton() 
     .setSingleChoiceItems(new CharSequence[]{"Visual","Audio","Both"},2,null) 

谢谢。

Answer 1

如果我正确理解你，你想重用你的AlerDialog，所以你可以定义它一次，并在片段/活动中的不同位置使用。

从Android文档AlertDialog android.app.AlertDialog.Builder.create()Creates a AlertDialog with the arguments supplied to this builder. It does not show() the dialog. This allows the user to do any extra processing before displaying the dialog. Use show() if you don't have any other processing to do and want this to be created and displayed. 所以：

//declare inside your fragment class 
private AlertDialog welcomeDialog; 

//Inisde onCreate paste the following code so your dialoge is just created but not shown 
      welcomeDialog = new AlertDialog.Builder(this) 
       .setIcon(android.R.drawable.ic_dialog_alert) 
       .setTitle(
         getResources().getString(R.string.first_run_title)) 
       .setMessage(
         getResources().getString(R.string.first_run_desc)) 
       .setPositiveButton(R.string.ok, 
         new DialogInterface.OnClickListener() { 
          public void onClick(DialogInterface dialog, 
            int which) { 
           dialog.dismiss(); 
          } 
         }).create(); 

//Wherever in your code you need to display the dialog,just use this piece of code: 
welcomeDialog.show(); 

//and finally to do the cleanup: 
    @Override 
protected void onStop() { 
    super.onStop(); 
    if (welcomeDialog != null) 
     welcomeDialog.dismiss();}