Android中弹出对话框，AlertDialog关键代码

写在这里便于以后查看。

Android中弹出对话框的关键代码：

 btn01.setOnClickListener(new OnClickListener() {

             @Override

             public void onClick(View v) {

                 Toast.makeText(musicActivity.this, "tanchu", 100).show();

                 // 以下是弹出对话框的关键代码,

                 AlertDialog.Builder b = new AlertDialog.Builder(

                         musicActivity.this);

                 b.setTitle("wyl");

                 b.setIcon(R.drawable.icon);

                 b.setCancelable(true);

                 b.setMessage("这是.setMessage(String str)方法");

                 b.setPositiveButton("positivieButton..",

                         new DialogInterface.OnClickListener() {

                             @Override

                             public void onClick(DialogInterface dialog,

                                     int which) {

                                 Toast.makeText(musicActivity.this,

                                         "xxxxxxxxxx", 100).show();

                             }

                         });

                 b.setNegativeButton("否", new DialogInterface.OnClickListener() {

                     @Override

                     public void onClick(DialogInterface dialog, int which) {

                         // TODO Auto-generated method stub

                         Toast.makeText(musicActivity.this, "否...", 100).show();

                     }

                 });

                 b.create().show();

             }

         });