1page.title=Adding an Easy Share Action 2parent.title=Sharing Content 3parent.link=index.html 4 5trainingnavtop=true 6previous.title=Receiving Content from Other Apps 7previous.link=receive.html 8 9@jd:body 10 11<div id="tb-wrapper"> 12<div id="tb"> 13 14<!-- table of contents --> 15<h2>This lesson teaches you to</h2> 16<ol> 17 <li><a href="#update-menus">Update Menu Declarations</a></li> 18 <li><a href="#set-share-intent">Set the Share Intent</a></li> 19</ol> 20 21<!-- other docs (NOT javadocs) --> 22<h2>You should also read</h2> 23<ul> 24 <li><a href="{@docRoot}guide/topics/ui/actionbar.html">Action Bar</a></li> 25</ul> 26 27</div> 28</div> 29 30 31<p>Implementing an effective and user friendly share action in your {@link android.app.ActionBar} 32is made even easier with the introduction of {@link android.view.ActionProvider} in Android 4.0 33(API Level 14). An {@link android.view.ActionProvider}, once attached to a menu item in the action 34bar, handles both the appearance and behavior of that item. In the case of {@link 35android.widget.ShareActionProvider}, you provide a share intent and it does the rest.</p> 36 37<p class="note"><strong>Note: </strong> {@link android.widget.ShareActionProvider} is available 38starting with API Level 14 and higher.</p> 39 40 41<div class="figure" style="width:200px"> 42<img src="{@docRoot}images/ui/actionbar-shareaction.png" alt="" id="figure1" /> 43<p class="img-caption"> 44 <strong>Figure 1.</strong> The {@link android.widget.ShareActionProvider} in the Gallery app. 45</p> 46</div> 47 48<h2 id="update-menus">Update Menu Declarations</h2> 49 50<p>To get started with {@link android.widget.ShareActionProvider ShareActionProviders}, define the <code>android:actionProviderClass</code> attribute for the corresponding <code><item></code> in your <a href="{@docRoot}guide/topics/resources/menu-resource.html">menu resource</a> file:</p> 51 52<pre> 53<menu xmlns:android="http://schemas.android.com/apk/res/android"> 54 <item android:id="@+id/menu_item_share" 55 android:showAsAction="ifRoom" 56 android:title="Share" 57 <strong>android:actionProviderClass="android.widget.ShareActionProvider"</strong> /> 58 ... 59</menu> 60</pre> 61 62<p>This delegates responsibility for the item's appearance and function to 63{@link android.widget.ShareActionProvider}. However, you will need to tell the provider what you 64would like to share.</p> 65 66 67<h2 id="set-share-intent">Set the Share Intent</h2> 68 69<p>In order for {@link android.widget.ShareActionProvider} to function, you must provide it a share 70intent. This share intent should be the same as described in the <a 71href="{@docRoot}training/sharing/send.html">Sending Content to Other Apps</a> 72lesson, with action {@link android.content.Intent#ACTION_SEND} and additional data set via extras 73like {@link android.content.Intent#EXTRA_TEXT} and {@link android.content.Intent#EXTRA_STREAM}. To 74assign a share intent, first find the corresponding {@link android.view.MenuItem} while inflating 75your menu resource in your {@link android.app.Activity} or {@link android.app.Fragment}. Next, call 76{@link android.view.MenuItem#getActionProvider() MenuItem.getActionProvider()} to retreive an 77instance of {@link android.widget.ShareActionProvider}. Use {@link 78android.widget.ShareActionProvider#setShareIntent(android.content.Intent) setShareIntent()} to 79update the share intent associated with that action item. Here's an example:</p> 80 81<pre> 82private ShareActionProvider mShareActionProvider; 83... 84 85@Override 86public boolean onCreateOptionsMenu(Menu menu) { 87 // Inflate menu resource file. 88 getMenuInflater().inflate(R.menu.share_menu, menu); 89 90 // Locate MenuItem with ShareActionProvider 91 MenuItem item = menu.findItem(R.id.menu_item_share); 92 93 // Fetch and store ShareActionProvider 94 mShareActionProvider = (ShareActionProvider) item.getActionProvider(); 95 96 // Return true to display menu 97 return true; 98} 99 100// Call to update the share intent 101private void setShareIntent(Intent shareIntent) { 102 if (mShareActionProvider != null) { 103 mShareActionProvider.setShareIntent(shareIntent); 104 } 105} 106</pre> 107 108<p>You may only need to set the share intent once during the creation of your menus, or you may 109want to set it and then update it as the UI changes. For example, when you view photos full screen 110in the Gallery app, the sharing intent changes as you flip between photos.</p> 111 112<p>For further discussion about the {@link android.widget.ShareActionProvider} object, see the <a 113href="{@docRoot}guide/topics/ui/actionbar.html#ActionProvider">Action Bar</a> guide.</p> 114 115 116
