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553 lines
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HTML
553 lines
14 KiB
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<a href="../index.html">AsyncDisplayKit </a>
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<optgroup label="Properties">
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<option value="//api/name/dataSource">dataSource</option>
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<option value="//api/name/delegate">delegate</option>
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<option value="//api/name/displayedImageIdentifier">displayedImageIdentifier</option>
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<option value="//api/name/downloadsIntermediateImages">downloadsIntermediateImages</option>
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<option value="//api/name/imageIdentifiers">imageIdentifiers</option>
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<option value="//api/name/loadedImageIdentifier">loadedImageIdentifier</option>
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<optgroup label="Instance Methods">
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<option value="//api/name/initWithCache:downloader:">- initWithCache:downloader:</option>
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<option value="//api/name/reloadImageIdentifierSources">- reloadImageIdentifierSources</option>
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<div id="overview_contents" class="container">
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<main role="main">
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<h1 class="title">ASMultiplexImageNode Class Reference</h1>
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<div class="section section-specification"><table cellspacing="0"><tbody>
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<tr>
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<th>Inherits from</th>
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<td><a href="../Classes/ASImageNode.html">ASImageNode</a> : <a href="../Classes/ASControlNode.html">ASControlNode</a> : <a href="../Classes/ASDisplayNode.html">ASDisplayNode</a> : ASDealloc2MainObject</td>
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</tr><tr>
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<th>Declared in</th>
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<td>ASMultiplexImageNode.h</td>
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</tr>
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</tbody></table></div>
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<div class="section section-overview">
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<a title="Overview" name="overview"></a>
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<h2 class="subtitle subtitle-overview">Overview</h2>
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<p>ASMultiplexImageNode begins loading images when its <a href="#//api/name/imageIdentifiers">imageIdentifiers</a> property is set. For each image
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identifier, the data source can either return a UIImage directly, or a URL the image node should load.</p>
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</div>
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<div class="section section-tasks">
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<a title="Tasks" name="tasks"></a>
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<div class="task-list">
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<div class="section-method">
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<a name="//api/name/initWithCache:downloader:" title="initWithCache:downloader:"></a>
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<h3 class="method-title"><code><a href="#//api/name/initWithCache:downloader:">– initWithCache:downloader:</a></code>
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</h3>
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<div class="method-info">
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<div class="pointy-thing"></div>
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<div class="method-info-container">
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<div class="method-subsection brief-description">
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<p>The designated initializer.</p>
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</div>
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<div class="method-subsection method-declaration"><code>- (instancetype)initWithCache:(id<ASImageCacheProtocol>)<em>cache</em> downloader:(id<ASImageDownloaderProtocol>)<em>downloader</em></code></div>
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<div class="method-subsection arguments-section parameters">
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<h4 class="method-subtitle parameter-title">Parameters</h4>
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<table class="argument-def parameter-def">
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<tr>
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<th scope="row" class="argument-name"><code>cache</code></th>
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<td><p>The object that implements a cache of images for the image node.</p></td>
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</tr>
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<tr>
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<th scope="row" class="argument-name"><code>downloader</code></th>
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<td><p>The object that implements image downloading for the image node.</p></td>
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</tr>
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</table>
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</div>
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<div class="method-subsection return">
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<h4 class="method-subtitle parameter-title">Return Value</h4>
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<p>An initialized ASMultiplexImageNode.</p>
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</div>
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<div class="method-subsection discussion-section">
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<h4 class="method-subtitle">Discussion</h4>
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<p>If <code>cache</code> is nil, the receiver will not attempt to retrieve images from a cache before downloading them.</p>
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</div>
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<div class="method-subsection declared-in-section">
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<h4 class="method-subtitle">Declared In</h4>
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<p><code class="declared-in-ref">ASMultiplexImageNode.h</code></p>
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</div>
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</div>
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</div>
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</div><div class="section-method">
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<a name="//api/name/delegate" title="delegate"></a>
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<h3 class="method-title"><code><a href="#//api/name/delegate"> delegate</a></code>
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</h3>
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<div class="method-info">
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<div class="pointy-thing"></div>
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<div class="method-info-container">
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<div class="method-subsection brief-description">
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<p>The delegate, which must conform to the <a href="../Protocols/ASMultiplexImageNodeDelegate.html">ASMultiplexImageNodeDelegate</a> protocol.</p>
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</div>
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<div class="method-subsection method-declaration"><code>@property (nonatomic, readwrite, weak) id<ASMultiplexImageNodeDelegate> delegate</code></div>
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<div class="method-subsection declared-in-section">
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<h4 class="method-subtitle">Declared In</h4>
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<p><code class="declared-in-ref">ASMultiplexImageNode.h</code></p>
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</div>
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</div>
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</div>
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</div><div class="section-method">
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<a name="//api/name/dataSource" title="dataSource"></a>
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<h3 class="method-title"><code><a href="#//api/name/dataSource"> dataSource</a></code>
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</h3>
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<div class="method-info">
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<div class="pointy-thing"></div>
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<div class="method-info-container">
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<div class="method-subsection brief-description">
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<p>The data source, which must conform to the <a href="../Protocols/ASMultiplexImageNodeDataSource.html">ASMultiplexImageNodeDataSource</a> protocol.</p>
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</div>
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<div class="method-subsection method-declaration"><code>@property (nonatomic, readwrite, weak) id<ASMultiplexImageNodeDataSource> dataSource</code></div>
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<div class="method-subsection discussion-section">
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<h4 class="method-subtitle">Discussion</h4>
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<p>This value is required for ASMultiplexImageNode to load images.</p>
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</div>
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<div class="method-subsection declared-in-section">
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<h4 class="method-subtitle">Declared In</h4>
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<p><code class="declared-in-ref">ASMultiplexImageNode.h</code></p>
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</div>
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</div>
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</div>
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</div><div class="section-method">
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<a name="//api/name/downloadsIntermediateImages" title="downloadsIntermediateImages"></a>
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<h3 class="method-title"><code><a href="#//api/name/downloadsIntermediateImages"> downloadsIntermediateImages</a></code>
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</h3>
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<div class="method-info">
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<div class="pointy-thing"></div>
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<div class="method-info-container">
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<div class="method-subsection brief-description">
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<p>Whether the receiver should download more than just its highest-quality image. Defaults to NO.</p>
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</div>
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<div class="method-subsection method-declaration"><code>@property (nonatomic, readwrite, assign) BOOL downloadsIntermediateImages</code></div>
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<div class="method-subsection discussion-section">
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<h4 class="method-subtitle">Discussion</h4>
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<p>ASMultiplexImageNode immediately loads and displays the first image specified in <a href="#//api/name/imageIdentifiers">imageIdentifiers</a> (its
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highest-quality image). If that image is not immediately available or cached, the node can download and display
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lesser-quality images. Set <code>downloadsIntermediateImages</code> to YES to enable this behaviour.</p>
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</div>
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<div class="method-subsection declared-in-section">
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<h4 class="method-subtitle">Declared In</h4>
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<p><code class="declared-in-ref">ASMultiplexImageNode.h</code></p>
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</div>
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</div>
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</div>
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</div><div class="section-method">
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<a name="//api/name/imageIdentifiers" title="imageIdentifiers"></a>
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<h3 class="method-title"><code><a href="#//api/name/imageIdentifiers"> imageIdentifiers</a></code>
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</h3>
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<div class="method-info">
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<div class="pointy-thing"></div>
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<div class="method-info-container">
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<div class="method-subsection brief-description">
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<p>An array of identifiers representing various versions of an image for ASMultiplexImageNode to display.</p>
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</div>
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<div class="method-subsection method-declaration"><code>@property (nonatomic, readwrite, copy) NSArray *imageIdentifiers</code></div>
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<div class="method-subsection discussion-section">
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<h4 class="method-subtitle">Discussion</h4>
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<p>An identifier can be any object that conforms to NSObject and NSCopying. The array should be in
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decreasing order of image quality – that is, the first identifier in the array represents the best version.</p>
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</div>
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<div class="method-subsection see-also-section">
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<h4 class="method-subtitle">See Also</h4>
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<ul>
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<li><code><p><<a href="#//api/name/downloadsIntermediateImages">@property downloadsIntermediateImages</a>> for more information on the image loading process.</p></code></li>
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</ul>
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</div>
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<div class="method-subsection declared-in-section">
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<h4 class="method-subtitle">Declared In</h4>
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<p><code class="declared-in-ref">ASMultiplexImageNode.h</code></p>
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</div>
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</div>
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</div>
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</div><div class="section-method">
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<a name="//api/name/reloadImageIdentifierSources" title="reloadImageIdentifierSources"></a>
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<h3 class="method-title"><code><a href="#//api/name/reloadImageIdentifierSources">– reloadImageIdentifierSources</a></code>
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</h3>
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<div class="method-info">
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<div class="pointy-thing"></div>
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<div class="method-info-container">
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<div class="method-subsection brief-description">
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<p>Notify the receiver that its data source has new UIImages or NSURLs available for <a href="#//api/name/imageIdentifiers">imageIdentifiers</a>.</p>
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</div>
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<div class="method-subsection method-declaration"><code>- (void)reloadImageIdentifierSources</code></div>
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<div class="method-subsection discussion-section">
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<h4 class="method-subtitle">Discussion</h4>
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<p>If a higher-quality image than is currently displayed is now available, it will be loaded.</p>
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</div>
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<div class="method-subsection declared-in-section">
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<h4 class="method-subtitle">Declared In</h4>
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<p><code class="declared-in-ref">ASMultiplexImageNode.h</code></p>
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</div>
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</div>
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</div>
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</div><div class="section-method">
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<a name="//api/name/loadedImageIdentifier" title="loadedImageIdentifier"></a>
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<h3 class="method-title"><code><a href="#//api/name/loadedImageIdentifier"> loadedImageIdentifier</a></code>
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</h3>
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<div class="method-info">
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<div class="pointy-thing"></div>
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<div class="method-info-container">
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<div class="method-subsection brief-description">
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<p>The identifier for the last image that the receiver loaded, or nil.</p>
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</div>
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<div class="method-subsection method-declaration"><code>@property (nonatomic, readonly) id loadedImageIdentifier</code></div>
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<div class="method-subsection discussion-section">
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<h4 class="method-subtitle">Discussion</h4>
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<p>This value may differ from <a href="#//api/name/displayedImageIdentifier">displayedImageIdentifier</a> if the image hasn’t yet been displayed.</p>
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</div>
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<div class="method-subsection declared-in-section">
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<h4 class="method-subtitle">Declared In</h4>
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<p><code class="declared-in-ref">ASMultiplexImageNode.h</code></p>
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</div>
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</div>
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</div>
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</div><div class="section-method">
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<a name="//api/name/displayedImageIdentifier" title="displayedImageIdentifier"></a>
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<h3 class="method-title"><code><a href="#//api/name/displayedImageIdentifier"> displayedImageIdentifier</a></code>
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</h3>
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<div class="method-info">
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<div class="pointy-thing"></div>
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<div class="method-info-container">
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<div class="method-subsection brief-description">
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<p>The identifier for the image that the receiver is currently displaying, or nil.</p>
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</div>
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<div class="method-subsection method-declaration"><code>@property (nonatomic, readonly) id displayedImageIdentifier</code></div>
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<div class="method-subsection declared-in-section">
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<h4 class="method-subtitle">Declared In</h4>
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<p><code class="declared-in-ref">ASMultiplexImageNode.h</code></p>
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</div>
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</div>
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</div>
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</div>
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<p class="copyright">Copyright © 2015 Facebook. All rights reserved. Updated: 2015-07-13</p>
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