安卓的几种alert对话框

 @Override
     public void onClick(View v) {

         switch (v.getId()) {
         case R.id.d1:

             AlertDialog.Builder builder=new AlertDialog.Builder(this);
             builder.setTitle("这是标题...");
             builder.setMessage("这就是一个确认取消对话框...");
             builder.setPositiveButton("确认", new DialogInterface.OnClickListener() {

                 @Override
                 public void onClick(DialogInterface dialog, int which) {
                     Toast.makeText(MainActivity.this, "你点击了确认按钮...", 0).show();
                 }
             });
             builder.setNegativeButton("取消", new DialogInterface.OnClickListener() {

                 @Override
                 public void onClick(DialogInterface dialog, int which) {
                     Toast.makeText(MainActivity.this, "你点击了取消按钮...", 0).show();
                 }
             });
             builder.show();
             break;
         case R.id.d2:
             AlertDialog.Builder builder1=new AlertDialog.Builder(this);
             builder1.setTitle("这是标题...");
             final String[] strings=new String[]{"小红","小明"};
             builder1.setSingleChoiceItems(strings, -1, new DialogInterface.OnClickListener() {

                 @Override
                 public void onClick(DialogInterface dialog, int which) {
                     Toast.makeText(MainActivity.this, "你选择了:"+strings[which], 0).show();

                 }
             });

             builder1.show();
             break;
         case R.id.d3:
             AlertDialog.Builder builder11=new AlertDialog.Builder(this);
             builder11.setTitle("这是标题...");
             final String[] strings1=new String[]{"小红","小明"};
             boolean[] b=new boolean[]{false,true};
             builder11.setMultiChoiceItems(strings1, b, new DialogInterface.OnMultiChoiceClickListener() {

                 @Override
                 public void onClick(DialogInterface dialog, int which, boolean isChecked) {

                     Toast.makeText(MainActivity.this, "你选择了:"+strings1[which]+" : "+isChecked, 0).show();
                 }
             });
             builder11.show();
             break;

             //进度对话框
         case R.id.d4:

 //            ProgressDialog pDialog=new ProgressDialog(this);
 //            pDialog.setTitle("这是一个进度框...");
 //            pDialog.setMax(100);
 //            pDialog.show();

             //这是比较简陋的方法,下面的比较全面合理
             final ProgressDialog proDialog = android.app.ProgressDialog.show(MainActivity.this, "测试", "2秒后自动消失！");
             Thread thread = new Thread()
             {
                 public void run()
                 {
                     try{
                         sleep(2000);
                     } catch (InterruptedException e) {
                         // TODO 自动生成的 catch 块
                         e.printStackTrace();
                     }
                     proDialog.dismiss();//万万不可少这句，否则会程序会卡死。
                 }
             };
             thread.start();
             break;
         case R.id.d5:

              xh_count = 0;  

              // 创建ProgressDialog对象
              final ProgressDialog xh_pDialog = new ProgressDialog(this);  

              // 设置进度条风格，风格为矩形
              xh_pDialog.setProgressStyle(ProgressDialog.STYLE_HORIZONTAL);  

              // 设置ProgressDialog 标题
              xh_pDialog.setTitle("提示");  

              // 设置ProgressDialog提示信息
              xh_pDialog.setMessage("这是一个长形进度条对话框");  

              // 设置ProgressDialog标题图标
 //             xh_pDialog.setIcon(R.drawable.img2);  

              // 设置ProgressDialog 的进度条是否不明确 false 就是不设置为不明确
              xh_pDialog.setIndeterminate(false);  

              // 设置ProgressDialog 进度条进度
              xh_pDialog.setProgress(200);
              xh_pDialog.setMax(200);

             //下面两种都可以解决触摸其他地方消失的问题
              xh_pDialog.setCancelable(false);   // 设置ProgressDialog 是否可以按退回键取消
 //             xh_pDialog.setCanceledOnTouchOutside(false);//这种不会阻止返回键

           // 设置ProgressDialog 的一个Button  可以用来取消对话框
              xh_pDialog.setButton("取消", new DialogInterface.OnClickListener() {

                 @Override
                 public void onClick(DialogInterface dialog, int which) {
                     // 点击“确定”按钮取消对话框
 //                    dialog.cancel();
                     xh_pDialog.dismiss();
                 }
             });
              // 让ProgressDialog显示
              xh_pDialog.show();  

              new Thread() {
                  @Override
                  public void run() {
                      try {
                          while (xh_count <= 200) {
                              // 由线程来控制进度
                              xh_pDialog.setProgress(xh_count++);
                              Thread.sleep(100);
                          }
                          xh_pDialog.dismiss();
                      } catch (Exception e) {
                          xh_pDialog.cancel();
                      }
                  }
              }.start();  

             break;

         }
     }