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git-subtree-dir: submodules/AsyncDisplayKit git-subtree-mainline: d06f423e0ed3df1fed9bd10d79ee312a9179b632 git-subtree-split: 02bedc12816e251ad71777f9d2578329b6d2bef6
633 lines
15 KiB
HTML
Executable File
633 lines
15 KiB
HTML
Executable File
<!DOCTYPE html>
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<html>
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<head>
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<meta charset="utf-8">
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<title>ASNetworkImageNode Class Reference</title>
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<link rel="stylesheet" href="../css/style.css">
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<meta name="viewport" content="initial-scale=1, maximum-scale=1.4">
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<meta name="generator" content="appledoc 2.2.1 (build 1334)">
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</head>
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<body class="appledoc">
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<header>
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<div class="container" class="hide-in-xcode">
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<h1 id="library-title">
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<a href="../index.html"> </a>
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</h1>
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<p id="developer-home">
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<a href="../index.html">AsyncDisplayKit</a>
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</p>
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</div>
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</header>
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<aside>
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<div class="container">
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<nav>
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<ul id="header-buttons" role="toolbar">
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<li><a href="../index.html">Index</a></li>
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<li><a href="../hierarchy.html">Hierarchy</a></li>
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<li id="on-this-page" role="navigation">
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<label>
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On This Page
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<div class="chevron">
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<div class="chevy chevron-left"></div>
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<div class="chevy chevron-right"></div>
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</div>
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<select id="jump-to">
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<option value="top">Jump To…</option>
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<option value="overview">Overview</option>
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<option value="tasks">Tasks</option>
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<optgroup label="Properties">
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<option value="//api/name/URL">URL</option>
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<option value="//api/name/currentImageQuality">currentImageQuality</option>
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<option value="//api/name/defaultImage">defaultImage</option>
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<option value="//api/name/delegate">delegate</option>
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<option value="//api/name/renderedImageQuality">renderedImageQuality</option>
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<option value="//api/name/shouldCacheImage">shouldCacheImage</option>
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<option value="//api/name/shouldRenderProgressImages">shouldRenderProgressImages</option>
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</optgroup>
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<optgroup label="Instance Methods">
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<option value="//api/name/init">- init</option>
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<option value="//api/name/initWithCache:downloader:">- initWithCache:downloader:</option>
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<option value="//api/name/setURL:resetToDefault:">- setURL:resetToDefault:</option>
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</optgroup>
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</select>
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</label>
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</li>
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</ul>
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</nav>
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</div>
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</aside>
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<article>
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<div id="overview_contents" class="container">
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<div id="content">
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<main role="main">
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<h1 class="title">ASNetworkImageNode 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>ASNetworkImageNode.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>ASNetworkImageNode is a simple image node that can download and display an image from the network, with support for a
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placeholder image (<a href="#//api/name/defaultImage">defaultImage</a>). The currently-displayed image is always available in the inherited ASImageNode
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<image> property.</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. Cache and Downloader are WEAK references.</p>
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</div>
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<div class="method-subsection method-declaration"><code>- (instancetype)initWithCache:(nullable 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. Weak reference.</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. Must not be nil. Weak reference.</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 ASNetworkImageNode.</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">ASNetworkImageNode.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/init" title="init"></a>
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<h3 class="method-title"><code><a href="#//api/name/init">– init</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>Convenience initialiser.</p>
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</div>
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<div class="method-subsection method-declaration"><code>- (instancetype)init</code></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 ASNetworkImageNode configured to use the NSURLSession-powered ASBasicImageDownloader, and no extra cache.</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">ASNetworkImageNode.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/ASNetworkImageNodeDelegate.html">ASNetworkImageNodeDelegate</a> protocol.</p>
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</div>
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<div class="method-subsection method-declaration"><code>@property (nullable, nonatomic, weak, readwrite) id<ASNetworkImageNodeDelegate> 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">ASNetworkImageNode.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/defaultImage" title="defaultImage"></a>
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<h3 class="method-title"><code><a href="#//api/name/defaultImage"> defaultImage</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>A placeholder image to display while the URL is loading.</p>
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</div>
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<div class="method-subsection method-declaration"><code>@property (nullable, nonatomic, strong, readwrite) UIImage *defaultImage</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">ASNetworkImageNode.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/URL" title="URL"></a>
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<h3 class="method-title"><code><a href="#//api/name/URL"> URL</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 URL of a new image to download and display.</p>
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</div>
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<div class="method-subsection method-declaration"><code>@property (nullable, nonatomic, strong, readwrite) NSURL *URL</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>Changing this property will reset the displayed image to a placeholder (<a href="#//api/name/defaultImage">defaultImage</a>) while loading.</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">ASNetworkImageNode.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/setURL:resetToDefault:" title="setURL:resetToDefault:"></a>
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<h3 class="method-title"><code><a href="#//api/name/setURL:resetToDefault:">– setURL:resetToDefault:</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>Download and display a new image.</p>
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</div>
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<div class="method-subsection method-declaration"><code>- (void)setURL:(nullable NSURL *)<em>URL</em> resetToDefault:(BOOL)<em>reset</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>URL</code></th>
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<td><p>The URL of a new image to download and display.</p></td>
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</tr>
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<tr>
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<th scope="row" class="argument-name"><code>reset</code></th>
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<td><p>Whether to display a placeholder (<a href="#//api/name/defaultImage">defaultImage</a>) while loading the new image.</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 declared-in-section">
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<h4 class="method-subtitle">Declared In</h4>
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<p><code class="declared-in-ref">ASNetworkImageNode.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/shouldCacheImage" title="shouldCacheImage"></a>
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<h3 class="method-title"><code><a href="#//api/name/shouldCacheImage"> shouldCacheImage</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>If <a href="#//api/name/URL">URL</a> is a local file, set this property to YES to take advantage of UIKit’s image caching. Defaults to YES.</p>
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</div>
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<div class="method-subsection method-declaration"><code>@property (nonatomic, assign, readwrite) BOOL shouldCacheImage</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">ASNetworkImageNode.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/shouldRenderProgressImages" title="shouldRenderProgressImages"></a>
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<h3 class="method-title"><code><a href="#//api/name/shouldRenderProgressImages"> shouldRenderProgressImages</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>If the downloader implements progressive image rendering and this value is YES progressive renders of the
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image will be displayed as the image downloads. Regardless of this properties value, progress renders will
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only occur when the node is visible. Defaults to YES.</p>
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</div>
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<div class="method-subsection method-declaration"><code>@property (nonatomic, assign, readwrite) BOOL shouldRenderProgressImages</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">ASNetworkImageNode.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/currentImageQuality" title="currentImageQuality"></a>
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<h3 class="method-title"><code><a href="#//api/name/currentImageQuality"> currentImageQuality</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 image quality of the current image. This is a number between 0 and 1 and can be used to track
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progressive progress. Calculated by dividing number of bytes / expected number of total bytes.</p>
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</div>
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<div class="method-subsection method-declaration"><code>@property (nonatomic, assign, readonly) CGFloat currentImageQuality</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">ASNetworkImageNode.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/renderedImageQuality" title="renderedImageQuality"></a>
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<h3 class="method-title"><code><a href="#//api/name/renderedImageQuality"> renderedImageQuality</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 image quality (value between 0 and 1) of the last image that completed displaying.</p>
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</div>
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<div class="method-subsection method-declaration"><code>@property (nonatomic, assign, readonly) CGFloat renderedImageQuality</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">ASNetworkImageNode.h</code></p>
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