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改造成uicollection view使用加载图片会出现跳动 #1

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XiMouQiu opened this issue Jul 4, 2016 · 1 comment
Open

改造成uicollection view使用加载图片会出现跳动 #1

XiMouQiu opened this issue Jul 4, 2016 · 1 comment

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@XiMouQiu
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XiMouQiu commented Jul 4, 2016

我将这个Demo转换成给collectionview 使用，然后从网络上下载图片，发现在上下滚动collectionview的过程中，原本在item = 1位置的图片，变到item = 2的位置，item = 2 的图片变到item = 1 的位置，也就是两个图片互相交换了位置，然后再滑动collectionview的时候又互相交换位置了，一直滚动就一直重复出现这个问题。
@zhoubo2015
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zhoubo2015 commented Mar 9, 2017 •
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应该不会，添加的task是顺序性的

我是发现先拖动到一个位置，图片在绘制，这个时候再去拖就拖动不了了
也就是切换到kCFRunLoopDefaultMode时，去拖动就会拖不动

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@zhoubo2015 @XiMouQiu