264 lines
6.5 KiB
HTML
264 lines
6.5 KiB
HTML
<!DOCTYPE html>
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<html>
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<title>ORKTaskResultSource Protocol Reference</title>
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<a href="../index.html">ResearchKit </a>
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On This Page
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<option value="overview">Overview</option>
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<option value="tasks">Tasks</option>
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<optgroup label="Instance Methods">
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<option value="//api/name/alwaysCheckForDefaultResult">- alwaysCheckForDefaultResult</option>
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<option value="//api/name/stepResultForStepIdentifier:">- stepResultForStepIdentifier:</option>
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</optgroup>
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<h1 class="title">ORKTaskResultSource Protocol 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>Conforms to</th>
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<td>NSObject</td>
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</tr><tr>
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<th>Declared in</th>
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<td>ORKCollectionResult.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><code>ORKTaskResultSource</code> is the protocol for <a href="../Classes/ORKTaskViewController.html#//api/name/defaultResultSource"><code>[ORKTaskViewController defaultResultSource]</code></a>.</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/stepResultForStepIdentifier:" title="stepResultForStepIdentifier:"></a>
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<h3 class="method-title"><code><a href="#//api/name/stepResultForStepIdentifier:">– stepResultForStepIdentifier:</a></code>
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<span class="task-item-suffix">required method</span></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>Returns a step result for the specified step identifier, if one exists.</p>
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</div>
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<div class="method-subsection method-declaration"><code>- (nullable ORKStepResult *)stepResultForStepIdentifier:(NSString *)<em>stepIdentifier</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>stepIdentifier</code></th>
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<td><p>The identifier for which to search.</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>The result for the specified step, or <code>nil</code> for none.</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>When it’s about to present a step, the task view controller needs to look up a
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suitable default answer. The answer can be used to prepopulate a survey with
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the results obtained on a previous run of the same task, by passing an
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<a href="../Classes/ORKTaskResult.html"><code>ORKTaskResult</code></a> object (which itself implements this protocol).</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">ORKCollectionResult.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/alwaysCheckForDefaultResult" title="alwaysCheckForDefaultResult"></a>
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<h3 class="method-title"><code><a href="#//api/name/alwaysCheckForDefaultResult">– alwaysCheckForDefaultResult</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>Should the default result store be used even if there is a previous result? (due to
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reverse navigation or looping)</p>
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</div>
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<div class="method-subsection method-declaration"><code>- (BOOL)alwaysCheckForDefaultResult</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><code>YES</code> if the default result should be given priority over the previous result.</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>By default, the <a href="../Classes/ORKTaskViewController.html#//api/name/defaultResultSource"><code>[ORKTaskViewController defaultResultSource]</code></a> is only queried for a
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result if the previous result is nil. This allows the result source to override that
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default behavior.</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">ORKCollectionResult.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 © 2018 ResearchKit. All rights reserved. Updated: 2018-07-23</p>
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<p class="generator">Generated by <a href="http://appledoc.gentlebytes.com">appledoc 2.2.1 (build 1334)</a>.</p>
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