android PopupWindow使用实例

注：点空白或菜单外隐藏popupwindow菜单；

但是，若点击有点击事件的组件则要再写代码手动隐藏；

    @Override
    public boolean onTouchEvent(MotionEvent event) {
        // TODO Auto-generated method stub
        if (mMenuPPW!=null){
            if (mMenuPPW.isShowing())
                mMenuPPW.dismiss();
        }
        return super.onTouchEvent(event);

    }

.java

 private PopupWindow mMenu;

     public void CreatMenu(View view) {
         if (mMenu == null) {
             LayoutInflater inflater = (LayoutInflater) getSystemService(Context.LAYOUT_INFLATER_SERVICE);
             View v = inflater.inflate(R.layout.popuppindow_group,
                     null, false);
             LinearLayout lytRequest = (LinearLayout) v.findViewById(R.id.lyt_pw_groupmember_request);
             lytRequest.setOnClickListener(this);
             LinearLayout lytExit = (LinearLayout) v.findViewById(R.id.lyt_pw_groupmember_exit);
             lytExit.setOnClickListener(this);
             mMenu = new PopupWindow(v);
 //            moreMenu.setWidth(300);
             mMenu.setWidth(LayoutParams.WRAP_CONTENT);
             mMenu.setHeight(LayoutParams.WRAP_CONTENT);
             mMenu.showAsDropDown(view);
         } else {
             if (mMenu.isShowing()) {
                 mMenu.dismiss();
             } else {
                 mMenu.showAsDropDown(view);
             }
         }
     }    

 @Override
     public void onClick(View v) {
         // TODO Auto-generated method stub
         switch (v.getId()) {
          case R.id.lyt_activitygroupmembers_menu:
              CreatMenu(v);
          break;
          case R.id.lyt_pw_groupmember_request:
              Toast.makeText(this, "request", Toast.LENGTH_SHORT).show();
              mMenu.dismiss();
          break;
          case R.id.lyt_pw_groupmember_exit:
              Toast.makeText(this, "exit", Toast.LENGTH_SHORT).show();
              mMenu.dismiss();
          break;         

         }

     }

.xml

<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
    android:layout_width="wrap_content"
    android:layout_height="wrap_content"
    android:background="@android:color/darker_gray" >

    <LinearLayout
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:orientation="vertical" >

        <LinearLayout
            android:id="@+id/lyt_pw_groupmember_request"
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:orientation="vertical" >

            <TextView
                android:id="@+id/TextView03"
                android:layout_width="match_parent"
                android:layout_height="40dp"
                android:layout_marginLeft="12dp"
                android:layout_marginRight="12dp"
                android:gravity="left|center"
                android:text="request"
                android:textSize="18sp" />

            <TextView
                android:id="@+id/TextView04"
                android:layout_width="match_parent"
                android:layout_height="0.5dp"
                android:layout_marginLeft="4dp"
                android:layout_marginRight="4dp"
                android:background="@android:color/darker_gray"
                android:text="TextView" />

        </LinearLayout>

        <LinearLayout
            android:id="@+id/lyt_pw_groupmember_exit"
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:orientation="vertical" >

            <TextView
                android:id="@+id/TextView02"
                android:layout_width="match_parent"
                android:layout_height="40dp"
                android:layout_marginLeft="12dp"
                android:layout_marginRight="12dp"
                android:gravity="left|center"
                android:text="exit"
                android:textSize="18sp" />

        </LinearLayout>

    </LinearLayout>

</RelativeLayout>

注：mMenu.showAsDropDown(view, 0, 16);即偏移view，x,y轴的间距