1page.title=<category> 2parent.title=The AndroidManifest.xml File 3parent.link=manifest-intro.html 4@jd:body 5 6<dl class="xml"> 7<dt>syntax:</dt> 8<dd><pre class="stx"><category android:<a href="#nm">name</a>="<i>string</i>" /></pre></dd> 9 10<dt>contained in:</dt> 11<dd><code><a href="{@docRoot}guide/topics/manifest/intent-filter-element.html"><intent-filter></a></code></dd> 12 13<dt>description:</dt> 14<dd itemprop="description">Adds a category name to an intent filter. See 15<a href="{@docRoot}guide/components/intents-filters.html">Intents and 16Intent Filters</a> for details on intent filters and the role of category 17specifications within a filter.</dd> 18 19<dt>attributes:</dt> 20<dd><dl class="attr"> 21<dt><a name="nm"></a>{@code android:name}</dt> 22<dd>The name of the category. Standard categories are defined in the 23{@link android.content.Intent} class as <code>CATEGORY_<i>name</i></code> 24constants. The name assigned here can be derived from those constants 25by prefixing "{@code android.intent.category.}" to the 26<code><i>name</i></code> that follows {@code CATEGORY_}. For example, 27the string value for {@code CATEGORY_LAUNCHER} is 28"{@code android.intent.category.LAUNCHER}". 29 30<p class="note"><strong>Note:</strong> In order to receive implicit intents, you must include the 31{@link android.content.Intent#CATEGORY_DEFAULT} category in the intent filter. The methods 32{@link android.app.Activity#startActivity startActivity()} and 33{@link android.app.Activity#startActivityForResult startActivityForResult()} treat all intents 34as if they declared the {@link android.content.Intent#CATEGORY_DEFAULT} category. 35If you do not declare it in your intent filter, no implicit intents will resolve to 36your activity.</p> 37 38<p> 39Custom categories should use the package name as a prefix, to ensure 40that they are unique. 41</p></dd> 42</dl></dd> 43 44<!-- ##api level indication## --> 45<dt>introduced in:</dt> 46<dd>API Level 1</dd> 47 48<dt>see also:</dt> 49<dd><code><a href="{@docRoot}guide/topics/manifest/action-element.html"><action></a></code> 50<br/><code><a href="{@docRoot}guide/topics/manifest/data-element.html"><data></a></code></dd> 51 52</dl> 53