1.在有時候我們需要選擇排序方式，在電視開發中往往使用一個彈出選單實現，Demo效果：

2.核心程式碼：

public class MainActivity extends Activity {
    private PopupWindow popupWindow;
    private View contentView;
    private Button btn;
//...

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
//...
        createPopWindow();//初始化彈出介面

        btn.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View v) {
                //從底部顯示
                popupWindow.showAtLocation(contentView, Gravity.BOTTOM, 0, 0);
            }
        });

    }

    private void createPopWindow() {
        contentView = LayoutInflater.from(MainActivity.this).inflate(R.layout.pop_window, null);
        //設定彈出框的寬度和高度
        popupWindow = new PopupWindow(contentView, ViewGroup.LayoutParams.MATCH_PARENT, 180);
        popupWindow.setFocusable(true);// 取得焦點
        //注意  要是點選外部空白處彈框訊息  那麼必須給彈框設定一個背景色  不然是不起作用的
        popupWindow.setBackgroundDrawable(new BitmapDrawable());
        //點選外部消失
        popupWindow.setOutsideTouchable(true);
        //設定可以點選
        popupWindow.setTouchable(true);
        //進入退出的動畫
        popupWindow.setAnimationStyle(R.style.mypopwindow_anim_style);

		
		reMen = (Button)contentView.findViewById(R.id.reMen);
        zuiXin = (Button)contentView.findViewById(R.id.zuiXin);
        pingFen = (Button)contentView.findViewById(R.id.pingFen);
        //是否選中的小圖示
        img = (ImageView)contentView.findViewById(R.id.img);
        img2 = (ImageView)contentView.findViewById(R.id.img2);
        img3 = (ImageView)contentView.findViewById(R.id.img3);
        img2.setVisibility(View.INVISIBLE);
        img3.setVisibility(View.INVISIBLE);
        reMen.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View v) {
                img.setVisibility(View.VISIBLE);
                img2.setVisibility(View.INVISIBLE);
                img3.setVisibility(View.INVISIBLE);

            }
        });
        pingFen.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View v) {
                img2.setVisibility(View.VISIBLE);
                img.setVisibility(View.INVISIBLE);
                img3.setVisibility(View.INVISIBLE);

            }
        });
        zuiXin.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View v) {
                img3.setVisibility(View.VISIBLE);
                img2.setVisibility(View.INVISIBLE);
                img.setVisibility(View.INVISIBLE);

            }
        });

    }

}