//彈出一個單選對話方塊
    private void showSingleDialog() {
        //[1]構造對話方塊的例項
        AlertDialog.Builder builder = new Builder(this);
        builder.setTitle("請選擇你喜歡的課程");
        //[1.1]★★★★★★
        final String items[] = {"android","ios","c++","html","遊戲"};
        builder.setSingleChoiceItems(items, -1, new DialogInterface.OnClickListener() {
            @Override
            public void onClick(DialogInterface dialog, int which) {
                //[1]獲取選擇條目
                String item = items[which];
                //[2]把選擇的條目展示到toast上
                Toast.makeText(getApplicationContext(), item, 1).show();
                //[3]關閉對話方塊
                dialog.dismiss();
            }
        });
        //[3]展示對話方塊  和toast一樣 一定要記得show出來
        builder.show();
    }
 

簡單的東西Copy過去用就好了