View popview = View.inflate(activity, R.layout.popwindow_layout, null);

        int width = Dp2pxUtils.Dp2Px(context, 150f);

        popupWindow = new PopupWindow(popview, width, LinearLayout.LayoutParams.WRAP_CONTENT);

        AnimationUtils.showTitlePopWindowAnimation(popview);//给popwindow添加动画

        initPopWindowListview(popview);

        popupWindow.setBackgroundDrawable(new ColorDrawable(Color.TRANSPARENT));

        View parent = View.inflate(context, R.layout.activity_main_drawerlayout, null);

        Rect frame = new Rect();

        activity.getWindow().getDecorView().getWindowVisibleDisplayFrame(frame);

        int x = Dp2pxUtils.Dp2Px(context, 20f);

        int titleHeight = Dp2pxUtils.Dp2Px(context, 60f);

        /**

         * parent:弹窗放置的父布局

         * Gravity.TOP + Gravity.RIGHT  该布局的右上角

         * x   相对于右上角x方向偏移多少

         * fram.top+titleHeight  y方向上的偏移值。

         */

        popupWindow.showAtLocation(parent, Gravity.TOP + Gravity.RIGHT, x, frame.top + titleHeight);

        popupWindow.setOutsideTouchable(true);

        popupWindow.setFocusable(true);

        popupWindow.update();

        popOutShadow(popupWindow);//使popwindow以外区域阴影显示