alertdialog简单用法

new AlertDialog.Builder(MainActivity.this)
                .setTitle("aaa")
                .setIcon(R.drawable.ic_launcher)
                .setMessage("next")
                .setPositiveButton("确定按钮",
                        new DialogInterface.OnClickListener() {

                            @Override
                            public void onClick(DialogInterface dialog,
                                    int which) {
                                // TODO Auto-generated method stub

                            }
                        }).setNegativeButton("普通按钮", new DialogInterface.OnClickListener() {
                            
                            @Override
                            public void onClick(DialogInterface dialog, int which) {
                                // TODO Auto-generated method stub
                                
                            }
                        }).setNeutralButton("取消按钮", new DialogInterface.OnClickListener() {
                            
                            @Override
                            public void onClick(DialogInterface dialog, int which) {
                                // TODO Auto-generated method stub
                                
                            }
                        }).show();