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Implementing an effective and user friendly share action in your is made even easier with the introduction of in Android 4.0 (API Level 14). An , once attached to a menu item in the action bar, handles both the appearance and behavior of that item. In the case of , you provide a share intent and it does the rest.

Note:  is available starting with API Level 14 and higher.

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Update Menu Declarations

To get started with , define the android:actionProviderClass attribute for the corresponding <item> in your file:

       
        ...
   

This delegates responsibility for the item's appearance and function to . However, you will need to tell the provider what you would like to share.

Set the Share Intent

In order for to function, you must provide it a share intent. This share intent should be the same as described in the lesson, with action and additional data set via extras like and . To assign a share intent, first find the corresponding while inflating your menu resource in your or . Next, call to retreive an instance of . Use to update the share intent associated with that action item. Here's an example:

private ShareActionProvider mShareActionProvider;...@Overridepublic boolean onCreateOptionsMenu(Menu menu) {    // Inflate menu resource file.    getMenuInflater().inflate(R.menu.share_menu, menu);    // Locate MenuItem with ShareActionProvider    MenuItem item = menu.findItem(R.id.menu_item_share);    // Fetch and store ShareActionProvider    mShareActionProvider = (ShareActionProvider) item.getActionProvider();    // Return true to display menu    return true;}// Call to update the share intentprivate void setShareIntent(Intent shareIntent) {    if (mShareActionProvider != null) {        mShareActionProvider.setShareIntent(shareIntent);    }}

You may only need to set the share intent once during the creation of your menus, or you may want to set it and then update it as the UI changes. For example, when you view photos full screen in the Gallery app, the sharing intent changes as you flip between photos.

For further discussion about the object, see the guide.