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更新 UI 按钮背景的延迟
原标题:Delay when updating the background of a UIButton

我使用 SetBackflorimage: for State: 更新 UI 按钮的背景。 背景会更新, 但仅在几秒钟后更新 。 这里的工作显然有一些更新循环, 但我找不到问题的确切位置 。 我尝试过与 SetNeeds Refresh 一起玩, 并设置 Needs Display 没有结果 。

我怎样才能瞬间改变UI按钮的背景?

谢谢 谢谢

最佳回答

在背景线上(例如,在代表回调中)尝试执行 UIKit 操作时,通常会造成这种奇怪的延误。请试一下 :

dispatch_async(dispatch_get_main_queue(), ^{
    // set your button background here
});
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