UIScrollView在滚动时暂停NSTimer [英] UIScrollView pauses NSTimer while scrolling

问题描述

我有一个 UIScrollView ，它有一系列快速更新数字的标签（每隔0.06秒）。但是，当滚动视图移动时， NSTimer 会暂停，直到滚动和弹性动画结束后才会继续。

I have a UIScrollView that has a series of labels which are rapidly updating numbers (every .06 seconds). While the scroll view is moving, however, the NSTimer is paused and does not continue until after the scrolling and the elastic animation have finished.

我怎样才能避免这种情况并且无论滚动视图的状态如何都运行 NSTimer ？

How can I avoid this and have the NSTimer run regardless of the state of the scroll view?

推荐答案

解决此问题的一种简单方法是将 NSTimer 添加到 mainRunLoop 。

An easy way to fix this is adding your NSTimer to the mainRunLoop.

[[NSRunLoop mainRunLoop] addTimer:timer forMode:NSRunLoopCommonModes];

要从安装它的所有运行循环模式中删除计时器，请发送向计时器发出无效消息。

To remove a timer from all run loop modes on which it is installed, send an invalidate message to the timer.

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