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Diffstat (limited to 'docs/html/training/load-data-background/setup-loader.jd')
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diff --git a/docs/html/training/load-data-background/setup-loader.jd b/docs/html/training/load-data-background/setup-loader.jd deleted file mode 100644 index 4b406116ff6c..000000000000 --- a/docs/html/training/load-data-background/setup-loader.jd +++ /dev/null @@ -1,90 +0,0 @@ -page.title=Setting Up the Loader -trainingnavtop=true -startpage=true - -@jd:body - -<!-- This is the training bar --> -<div id="tb-wrapper"> - <div id="tb"> -<h2>This lesson teaches you to</h2> -<ol> - <li> - <a href="#AddExtensions">Extend an Activity</a> - </li> - <li> - <a href="#GetLoader">Retrieve a LoaderManager</a> - </li> - <li> - <a href="#InitializeLoader">Initialize the Loader Framework</a> - </li> -</ol> - </div> -</div> -<p> - You create a {@link android.support.v4.content.CursorLoader} within a - <b>loader framework</b>. To set up the framework, you implement the - {@link android.support.v4.app.LoaderManager.LoaderCallbacks LoaderCallbacks<Cursor>} - as part of an {@link android.app.Activity}. In addition, to provide compatibility - compatible with platform versions starting with Android 1.6, you must extend the - {@link android.app.Activity} with the {@link android.support.v4.app.FragmentActivity} class. -</p> -<p class="note"> - <strong>Note:</strong> A {@link android.support.v4.app.Fragment} is not a prerequisite for - {@link android.support.v4.content.CursorLoader}. As a convenience, the support library class - {@link android.support.v4.app.FragmentActivity} contains the fragment and the loader frameworks, - but they are completely independent of each other. -</p> -<p> - Before you can use the loader framework, you need to initialize it. To do this, retrieve - a {@link android.support.v4.app.LoaderManager} object and call its - {@link android.support.v4.app.LoaderManager#initLoader initLoader()} method. -</p> -<p> - If you do use one or more {@link android.support.v4.app.Fragment} objects in an - {@link android.app.Activity}, the {@link android.support.v4.app.LoaderManager} you retrieve is - available to all of them. -</p> -<h2 id="AddExtensions">Extend an Activity</h2> -<p> - To set up an {@link android.app.Activity} subclass to contain a - {@link android.support.v4.content.CursorLoader}, extend the subclass with - must extend {@link android.support.v4.app.FragmentActivity}, which provides the loader - framework, and implement the {@link android.support.v4.app.LoaderManager.LoaderCallbacks - LoaderCallbacks<Cursor>} interface, which specifies method signatures that the loader - framework uses to interact with the {@link android.app.Activity}. -</p> -<p> - For example: -</p> -<pre> -public class DisplayActivity extends FragmentActivity - implements LoaderManager.LoaderCallbacks<Cursor> -</pre> -<h2 id="GetLoader">Retrieve a LoaderManager</h2> -<p> - To get an instance {@link android.support.v4.app.LoaderManager} for use in your - {@link android.app.Activity}, call - {@link android.support.v4.app.FragmentActivity#getSupportLoaderManager - FragmentActivity.getSupportLoaderManager()} at the beginning of the - {@link android.app.Activity#onCreate onCreate()} method. For example: -</p> -<pre> -private LoaderManager mLoaderManager; -public void onCreate() { -... -mLoaderManager = this.getSupportLoaderManager(); -</pre> -<h2 id="InitializeLoader">Initialize the Loader Framework</h2> -<p> - Once you have the {@link android.support.v4.app.LoaderManager} object, initialize - it by calling {@link android.support.v4.app.LoaderManager#initLoader initLoader()}. For - example: -</p> -<pre> -// CursorLoader instance identifier -public static final int URL_LOADER = 0; -... -// Initializes the CursorLoader -getSupportLoaderManager().initLoader(URL_LOADER, null, this); -</pre> |