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41 lines
1.8 KiB
Markdown
41 lines
1.8 KiB
Markdown
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What is it?
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===========
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It is a subclass of `UIImageView` that allows you to customize the alignment of the displayed image inside the view's frame.
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This works even if the `contentMode` is set to `AspectFit`, `AspectFill` or `ScaleToFill`.
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Why a subclass of UIImageView, and not a standard UIView?
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=========================================================
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Because there are many cool categories built on top of UIImageView. Subclassing a standard UIView would mean losing them.
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For example, AFNetworking's async `UIImageView` category works perfectly using this container class, and you don't have to worry about a thing.
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How does it work?
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=================
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When initialized, `UIImageViewAligned` will create a inner `UIImageView` which will actually hold the image displayed.
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The main class then just repositions this inner `UIImageView` to achieve your desired alignment.
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At runtime, you can change the image, contentMode or alignment and the image will reposition itself correctly.
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The `image` property of UIImageViewAligned is overwritten to forward the calls to the inner `UIImageView`, so you can just drag-n-drop into your app.
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Compatibility
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=============
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From what I tested, it works on iOS 6.0+.
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Also, it supports autorotation and will reposition the image correctly.
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Using Interface Builder
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=======================
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You can setup the alignment from Interface Builder using the `Identity Inspector` tab for the UIImageViewAligned.
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There, you can add custom boolean properties that will be set when the view is instantiated.
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The possible boolean names are:
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`alignLeft`
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`alignRight`
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`alignTop`
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`alignBottom`
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Below is a screenshot of an example. You will not get an immediate feedback in IB regarding your alignment, but it will work at runtime.
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