android dialog

AlertDialog.Builder dialog=new AlertDialog.Builder(MainActivity.this);dialog.setTitle("123");dialog.setMessage("456");dialog.setNegativeButton("no", new DialogInterface.OnClickListener() {            @Override            public void onClick(DialogInterface dialog, int which) {                Toast.makeText(MainActivity.this, "123", Toast.LENGTH_SHORT).show();            }        });dialog.setPositiveButton("YES",new DialogInterface.OnClickListener() {           @Override           public void onClick(DialogInterface arg0, int arg1) {               TODO Auto-generated method stub                Toast.makeText(MainActivity.this, "我了解了",Toast.LENGTH_SHORT).show();           }       });       dialog.setNeutralButton("取消",new DialogInterface.OnClickListener() {            @Override           public void onClick(DialogInterface arg0, int arg1) {               // TODO Auto-generated method stub              Toast.makeText(MainActivity.this, "取消",Toast.LENGTH_SHORT).show();            }       });dialog.show();////////////////final String[] dinner={"1","2","3"};AlertDialog.Builder list=new AlertDiaolog.Builder(MainActivity.this);list.setTitle("list");list.setItems(dinner,, new DialogInterface.OnClickListener(){//            @Override////            //只要你在onClick处理事件内，使用which参数，就可以知道按下阵列里的哪一个了//            public void onClick(DialogInterface dialog, int which) {//                // TODO Auto-generated method stub//                Toast.makeText(MainActivity.this, "你选的是" + dinner[which], Toast.LENGTH_SHORT).show();//            }//        });  final View v = inflater.inflate(R.layout.alertdialog, null);//        new AlertDialog.Builder(MainActivity.this)//                .setTitle("请输入你的id")//                .setView(v)//                .setPositiveButton("确定", new DialogInterface.OnClickListener() {//                    @Override//                    public void onClick(DialogInterface dialog, int which) {//                        EditText editText = (EditText) (v.findViewById(R.id.editText1));//                        Toast.makeText(getApplicationContext(), "你的id是" +////                                editText.getText().toString(), Toast.LENGTH_SHORT).show();//                    }//                })//                .show();