Simple implementation of Android pop-up menu effect _android

This example for you to share the Android pop-up menu effect of the specific code for your reference, the specific content as follows

function Description: The user clicks the button pop-up menu. When the user selects a menu item, the Menuitemclick event is triggered and the pop-up menu disappears; If the user clicks outside the menu, the pop-up menu disappears directly. When the menu disappears, a dismissevent event is raised (this event can be used to do some post-processing when the menu disappears).

1. Operation effect

2. Add menu items
Add a menu subfolder under the Resources folder, and then add a file named Demo07_popup_menu.xml under this subfolder:

<?xml version= "1.0" encoding= "Utf-8"?> <menu xmlns:android=
"http://schemas.android.com/apk/res/" Android ">
  <item android:id=" @+id/item1 "
     android:title=" Item 1,/> <item android:id=  
  "@+id/ Item1 "
     android:title=" Item 2/> 
  <item android:id= "@+id/item1"
     android:title= "Item 3"/>
</menu> 

3, add Demo07_popupmenu.axml

<?xml version= "1.0" encoding= "Utf-8"?> <linearlayout xmlns:android=
"http://schemas.android.com/apk/" Res/android "
  android:orientation=" vertical "
  android:layout_width=" fill_parent "
  android:layout_" height= "Fill_parent" >
  <button
    android:id= "@+id/popupbutton" android:layout_width= "Fill_"
    Parent "
    android:layout_height=" wrap_content "
    android:text=" @string/showpopup "/>
</ Linearlayout> 

Save all files.

4, add Demo07PopupMenu.cs

 using Android.app; using Android.os; using Android.widget; Namespace Ch05demos.  srcactivity {[Activity (Label = ' demo07popupmenu ')] public class Demo07popupmenu:activity {protected override void OnCreate (Bundle savedinstancestate) {base.
      OnCreate (savedinstancestate);

      Setcontentview (Resource.Layout.demo07_Popup);
      Button btn = findviewbyid<button> (Resource.Id.popupButton); Btn.
        Click + = (s, arg) => {popupmenu menu = new PopupMenu (this, BTN); Menu.
        Inflate (Resource.Menu.demo07_popup_menu); Menu. Menuitemclick = = (sender, args) => {string str = string. Format ("you selected: {0}", args.)
          Item); Toast.maketext (This,str, Toastlength.short).
        Show ();
        }; Menu.
        Dismissevent + = (sender, args) => {//menu disappears to do some post-processing in this event}; Menu.
      Show ();
    }; }
  }
}

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