Android彈框

new AlertDialog.Builder(MainActivity.this)
                       .setTitle("標題")
                       .setMessage("提示的信息")
                       .setCancelable(false)//點擊彈框以外部分是否退出
                       .setPositiveButton("確定", new DialogInterface.OnClickListener() {
                    @Override
                    public void onClick(DialogInterface dialog, int which) {

                    }
                })
                .setNegativeButton("取消", new DialogInterface.OnClickListener() {
                    @Override
                    public void onClick(DialogInterface dialog, int which) {

                    }
                }).show();