Android popupWindow弹出窗体实现方法分析

<?xml version="1.0" encoding="utf-8"?><LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"  android:layout_width="match_parent"  android:layout_height="80dip"  android:background="@drawable/popup_yellow_window_bg"  android:orientation="horizontal" >  <TextView      android:id="@+id/popupwindow_app_uninstall_text"      android:layout_width="wrap_content"      android:layout_height="wrap_content"      android:layout_gravity="center_horizontal"      android:layout_marginBottom="5dip"      android:layout_marginTop="5dip"      android:drawableTop="@drawable/kn_malware_scan_deep_click"      android:text="卸 载"/></LinearLayout>

View contentView = View.inflate(getApplicationContext(), R.layout.popup_window, null);LinearLayout ll_uninstall = (LinearLayout) contentView.findViewById(R.id.ll_uninstall);//设置popupwindow内布局组件的监听（与其他组件相似）MyOnClickListener l = new MyOnClickListener(position);ll_uninstall.setOnClickListener(l);PopupWindow mPopupWindow = new PopupWindow(contentView, ViewGroup.LayoutParams.WRAP_CONTENT, 70);int[] arrayOfInt = new int[2];view.getLocationInWindow(arrayOfInt);int x = arrayOfInt[0] + 60;int y = arrayOfInt[1];//1 指定popupwindow的背景  2 popupwindow能够获得焦点mPopupWindow.setBackgroundDrawable(new BitmapDrawable());mPopupWindow.setFocusable(true);mPopupWindow.showAtLocation(view, Gravity.LEFT|Gravity.TOP, x, y);//在合适位置取消popupwindow显示mPopupWindow.dismiss();