mirror of
https://github.com/Instagram/IGListKit
synced 2026-05-06 06:58:26 +00:00
0ccf7fef5d
Summary: ## Changes in this pull request Get this fix and make it ready for 4.0 release. ### Checklist - [ ] All tests pass. Demo project builds and runs. - [ ] I added tests, an experiment, or detailed why my change isn't tested. - [ ] I added an entry to the `CHANGELOG.md` for any breaking changes, enhancements, or bug fixes. - [ ] I have reviewed the [contributing guide](https://github.com/Instagram/IGListKit/blob/master/.github/CONTRIBUTING.md) Pull Request resolved: https://github.com/Instagram/IGListKit/pull/1393 Reviewed By: iperry90 Differential Revision: D18618773 Pulled By: lorixx fbshipit-source-id: 0360c36d85dc5db15d7e08bdf68ec9c8be992499
377 lines
19 KiB
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377 lines
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IGListCollectionView Class Reference
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<section>
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<section class="section">
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<h1>IGListCollectionView</h1>
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<div class="declaration">
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<div class="language">
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<pre class="highlight objective_c"><code>
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<span class="k">@interface</span> <span class="nc">IGListCollectionView</span> <span class="p">:</span> <span class="nc">UICollectionView</span></code></pre>
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</div>
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<p>This <code>UICollectionView</code> subclass allows for partial layout invalidation using <code><a href="../Classes/IGListCollectionViewLayout.html">IGListCollectionViewLayout</a></code>,
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or custom layout classes that conform to IGListCollectionViewLayoutCompatible.</p>
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<div class="aside aside-note">
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<p class="aside-title">Note</p>
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When updating a collection view (ex: calling <code>-insertSections</code>), <code>-invalidateLayoutWithContext</code> gets called on
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the layout object. However, the invalidation context doesn’t provide details on which index paths are being modified,
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which typically forces a full layout re-calculation. <code>IGListCollectionView</code> gives <code><a href="../Classes/IGListCollectionViewLayout.html">IGListCollectionViewLayout</a></code> the
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missing information to re-calculate only the modified layout attributes.
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</div>
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</section>
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<section class="section task-group-section">
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<div class="task-group">
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<ul>
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<li class="item">
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<div>
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<code>
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<a name="/c:objc(cs)IGListCollectionView(im)initWithFrame:listCollectionViewLayout:"></a>
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<a name="//apple_ref/objc/Method/-initWithFrame:listCollectionViewLayout:" class="dashAnchor"></a>
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<a class="token" href="#/c:objc(cs)IGListCollectionView(im)initWithFrame:listCollectionViewLayout:">-initWithFrame:listCollectionViewLayout:</a>
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</code>
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</div>
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<div class="pointer-container"></div>
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<section class="section">
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<div class="pointer"></div>
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<div class="abstract">
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<p>Create a new view with an <code>IGListcollectionViewLayout</code> class or subclass.</p>
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<div class="aside aside-note">
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<p class="aside-title">Note</p>
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<p>You can initialize a new view with a base layout by simply calling <code>-[IGListCollectionView initWithFrame:]</code>.</p>
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</div>
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</div>
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<div class="declaration">
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<h4>Declaration</h4>
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<div class="language">
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<p class="aside-title">Objective-C</p>
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<pre class="highlight objective_c"><code><span class="k">-</span> <span class="p">(</span><span class="n">nonnull</span> <span class="n">instancetype</span><span class="p">)</span>
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<span class="nf">initWithFrame</span><span class="p">:(</span><span class="n">CGRect</span><span class="p">)</span><span class="nv">frame</span>
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<span class="nf">listCollectionViewLayout</span><span class="p">:</span>
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<span class="p">(</span><span class="n">nonnull</span> <span class="n">UICollectionViewLayout</span><span class="o"><</span><span class="n"><a href="../Protocols/IGListCollectionViewLayoutCompatible.html">IGListCollectionViewLayoutCompatible</a></span><span class="o">></span> <span class="o">*</span><span class="p">)</span>
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<span class="n">collectionViewLayout</span><span class="p">;</span></code></pre>
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</div>
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</div>
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<div>
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<h4>Parameters</h4>
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<table class="graybox">
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<tbody>
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<tr>
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<td>
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<code>
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<em>frame</em>
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</code>
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</td>
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<td>
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<div>
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<p>The frame to initialize with.</p>
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</div>
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</td>
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</tr>
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<tr>
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<td>
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<code>
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<em>collectionViewLayout</em>
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</code>
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</td>
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<td>
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<div>
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<p>The layout to use with the collection view. You can use IGListCollectionViewLayout
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here, or a custom layout class that conforms to IGListCollectionViewLayoutCompatible.</p>
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</div>
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</td>
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</tr>
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</tbody>
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</table>
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</div>
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</section>
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</div>
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</ul>
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</section>
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