我认为你错误地按了command + T而不是command + R。

进入模拟器菜单 Device ->重启

然后一切都比你想象的快-_-

当chrome调试是活动的，浏览器选项卡不在前台，模拟器也很慢。对我来说，我决定把指南放在前台。

模拟器->重置内容和设置为我工作。当我远程调试我的反应本机代码时，这个问题似乎又出现了。也可以像nomad建议的那样使用AsyncStorage。

I don't have the rep yet to leave a comment, but I upvoted some answers here and wanted to say more. I had a problem with slow animations in the iOS Simulator, especially on rotation, and I found this post via Google. Indeed, somehow "Toggle Slow Animations" must have been on, because three shifts fixed it. At first, I didn't think this was a problem because there's no checkmark next to "Toggle Slow Animations." It turns out there's never a checkmark, or any indication from the menu whether it's on or off. So just try toggling it and see if the rotation/navigation is faster/slower.

所以，谢谢大家!

我认为你错误地按了command + T而不是command + R。