PopupWindow显示在某个控件上方

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一、自定义PopupWindow

public class PopupWindowView extends PopupWindow{    private int popupWidth;    private int popupHeight;    private ListView listView;    private View parentView;    public PopupWindowView(Context context , ArrayList<PopBean> popBeans ) {        super(context);        initView(context);        setPopConfig();        initData(context,popBeans);    }    /**     *   初始化控件     * <h3>Version</h3> 1.0     * <h3>CreateTime</h3> 2016/6/29,22:00     * <h3>UpdateTime</h3> 2016/6/29,22:00     * <h3>CreateAuthor</h3> vera     * <h3>UpdateAuthor</h3>     * <h3>UpdateInfo</h3> (此处输入修改内容,若无修改可不写.)     * @param context     */    private void initView(Context context) {        parentView = View.inflate(context, R.layout.layout_popup_window, null);        listView = (ListView) parentView.findViewById(R.id.popup_window_list);        setContentView(parentView);    }    /**     *   初始化数据     * <h3>Version</h3> 1.0     * <h3>CreateTime</h3> 2016/6/29,22:03     * <h3>UpdateTime</h3> 2016/6/29,22:03     * <h3>CreateAuthor</h3> vera     * <h3>UpdateAuthor</h3>     * <h3>UpdateInfo</h3> (此处输入修改内容,若无修改可不写.)     * @param context     * @param popBeans     */    private void initData(Context context, ArrayList<PopBean> popBeans) {        //给ListView添加数据        PopListViewAdapter popListViewAdapter = new PopListViewAdapter(context,popBeans);        listView.setAdapter(popListViewAdapter);    }    /**     *     * 配置弹出框属性     * @version 1.0     *     * @createTime 2015/12/1,12:45     * @updateTime 2015/12/1,12:45     * @createAuthor     * @updateAuthor     * @updateInfo (此处输入修改内容,若无修改可不写.)     *     */    private void setPopConfig() {//        this.setContentView(mDataView);//设置要显示的视图        this.setWidth(ViewGroup.LayoutParams.MATCH_PARENT);        this.setHeight(ViewGroup.LayoutParams.WRAP_CONTENT);        // 设置弹出窗体可点击        this.setFocusable(true);        ColorDrawable dw = new ColorDrawable(0xcc000000);        this.setBackgroundDrawable(dw);        this.setOutsideTouchable(true);// 设置外部触摸会关闭窗口        //获取自身的长宽高        parentView.measure(View.MeasureSpec.UNSPECIFIED, View.MeasureSpec.UNSPECIFIED);        popupHeight = parentView.getMeasuredHeight();        popupWidth = parentView.getMeasuredWidth();    }    public ListView getListView() {        return listView;    }    /**     * 设置显示在v上方(以v的左边距为开始位置)     * @param v     */    public void showUp(View v) {        //获取需要在其上方显示的控件的位置信息        int[] location = new int[2];        v.getLocationOnScreen(location);        //在控件上方显示        showAtLocation(v, Gravity.NO_GRAVITY, (location[0]) - popupWidth / 2, location[1] - popupHeight);    }    /**     * 设置显示在v上方（以v的中心位置为开始位置）     * @param v     */    public void showUp2(View v) {        //获取需要在其上方显示的控件的位置信息        int[] location = new int[2];        v.getLocationOnScreen(location);        //在控件上方显示        showAtLocation(v, Gravity.NO_GRAVITY, (location[0] + v.getWidth() / 2) - popupWidth / 2, location[1] - popupHeight);    }}

二、布局

<?xml version="1.0" encoding="utf-8"?><LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"    android:orientation="vertical"    android:layout_width="match_parent"    android:layout_height="wrap_content">    <ListView        android:id="@+id/popup_window_list"        android:layout_width="match_parent"        android:layout_height="wrap_content">    </ListView></LinearLayout>

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