如何在 xcode 中延迟事件？
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How do I delay an event in xcode?
提问by Herbie999
I am surprised I can't find this answer but for some reason can't find it for Xcode.
我很惊讶我找不到这个答案，但由于某种原因无法在 Xcode 中找到它。
In my app I have an IBAction buttonPressed and it adds coins to my "coins" variable and displays it in a UILabel. I would like to make it so when the user presses the button it does not add the coins or display it in the UILabel for about 30 seconds. Is there a simple way to do this? I'm pretty new, so please explain in simple steps if possible. Thank You :)
在我的应用程序中，我有一个 IBAction buttonPressed，它将硬币添加到我的“硬币”变量中，并将其显示在 UILabel 中。我想这样做，当用户按下按钮时，它不会添加硬币或在 UILabel 中显示大约 30 秒。有没有一种简单的方法可以做到这一点？我很新，所以如果可能的话，请用简单的步骤解释。谢谢你 ：）
回答by rdelmar
It's very easy, just use performSelector:withObject:afterDelay:. You would put it in your IBAction code like this:
这很简单，只需使用 performSelector:withObject:afterDelay:。你可以像这样把它放在你的 IBAction 代码中：
-(IBAction)buttonPressed:(UIButton *) sender {
[self performSelector:@selector(addCoins) withObject:nil afterDelay:30];
}
-(void)addCoins {
//put whatever code you want to happen after the 30 seconds
}
