View--diaglog(对话框)

[android]代码库

1.按键添加一个onClick事件,执行dialog(View view)方法
   public  void  clean(View  view)
    {   
        dialog();
    }

//对话框
    public void dialog() {
        AlertDialog.Builder builder = new AlertDialog.Builder(Data_Activity.this);
         builder.setMessage("确认退出吗?");
         builder.setTitle("提示");
         builder.setPositiveButton("确认", new DialogInterface.OnClickListener() {
            @Override
             public void onClick(DialogInterface dialog, int which) {
               dialog.dismiss();
                Data_Activity.this.finish();
                 }
             });
        builder.setNegativeButton("取消", new DialogInterface.OnClickListener() {
            @Override
             public void onClick(DialogInterface dialog, int which) {
              dialog.dismiss();
                }
            });
       builder.create().show();
        }