如何实现AlertDialog.Builder选定的项目点击事件？

Question

我想实现AlertDialog.Builder所选项目的点击事件。以下是我迄今为止所尝试的内容。我对Android很新，我不确定如何访问该事件。如何实现列表中每个单独项目的点击事件？

import android.app.Activity; 
import android.app.AlertDialog; 
import android.content.DialogInterface; 

public class MakeCallAlertDialog { 

    public static AlertDialog.Builder getAlertDialog(String strArray[], 
      String strTitle, Activity activity) { 
     AlertDialog.Builder alertDialogBuilder = new AlertDialog.Builder(activity); 
     alertDialogBuilder.setTitle(strTitle); 
     alertDialogBuilder.setItems(strArray, new DialogInterface.OnClickListener() { 

      @Override 
      public void onClick(DialogInterface dialogInterface, int arg) { 
       // TODO Auto-generated method stub 
      } 
     }); 

     return alertDialogBuilder; 
    } 
} 

Answer 1

既然你指定特定于该方法的OnClickListener，该int参数是position in the list：

参数

对话框所收到的点击对话框。

这或项目的位置点击

这意味着你的方法内被点击（如BUTTON1）按钮，你应该能够做到这一点：

public static AlertDialog.Builder getAlertDialog(final String strArray[], 
     String strTitle, final Activity activity) { 

    AlertDialog.Builder alertDialogBuilder = 
      new AlertDialog.Builder(activity); 
    alertDialogBuilder.setTitle(strTitle); 

    alertDialogBuilder.setItems(strArray, 
      new DialogInterface.OnClickListener() { 

     @Override 
     public void onClick(DialogInterface dialog, int which) { 
      Toast.makeText(activity, strArray [which], Toast.LENGTH_SHORT).show(); 

      //rest of your implementation 
     } 
    }); 
    return alertDialogBuilder; 
} 

Answer 2

在onClick（）事件中使用switch语句为每个按钮写入点击方法。

@Override 
     public void onClick(DialogInterface dialogInterface, int arg) { 
      // TODO Auto-generated method stub 
      switch (arg) { 
       case 0: 
        //you code for button at 0 index click 
        break; 
       case 1: 
        //you code for button at 1 index click 
        break; 
       default: 
        break; 
      } 
     } 

这里，arg表示按下按钮的索引。你也可以使用strArray [参数]

Answer 3

检查以下，如果您使用所选的strArray单一选择项目我的答案访问按钮：试试这个代码

int selectedItem = 0; 

//这里取TempSelectOneTypeList = strArray

AlertDialog.Builder alt_bld = new AlertDialog.Builder(
            Activity_Form_Data.this); 
          alt_bld.setTitle("Select One"); 
          selectedItem = 0; 
          for (int j = 0; j < TempSelectOneTypeList.length; j++) { 

           if (txt_sub_lable2 
             .getText() 
             .toString() 
             .equals(TempSelectOneTypeList[j].toString())) { 
            selectedItem = j; 
           } 
          } 

          Log.i(TAG, "Selected Item is " + selectedItem); 

          alt_bld.setSingleChoiceItems(
            ArraylistSelectOneTypeList.get(selected), 
            selectedItem, 
            new DialogInterface.OnClickListener() { 
             public void onClick(DialogInterface dialog, 
               int item) { 
              selectedItem = item; 
              // you can ocde here for the perticular selected item 
             } 
            }); 
          alt_bld.setPositiveButton("OK", 
            new DialogInterface.OnClickListener() { 
             @Override 
             public void onClick(DialogInterface dialog, 
               int which) { 

              txt_sub_lable2 
                .setText("" 
                  + TempSelectOneTypeList[selectedItem] 
                    .toString()); 
    } 
            }); 
          alt_bld.setNegativeButton("Cancel", 
            new DialogInterface.OnClickListener() { 
             @Override 
             public void onClick(DialogInterface dialog, 
               int which) { 
              dialog.dismiss(); 

             } 
            }); 

          AlertDialog alert = alt_bld.create(); 
          alert.show(); 

希望这本书能解决你的问题