问题描述
当应用程序从后台出现时，我想显示一个特定的ViewController.
I want to show a specific ViewController when the app comes foregrounded from the background.
我正在使用此方法来调用ViewController.
I am using this method to call a ViewController.
- (void)applicationWillEnterForeground:(UIApplication *)application
{
[self presentMyViewController];
}
但是从后台返回时会有延迟.换句话说，您可以看到上一个视图，然后看到ViewController.我根本不想显示以前的视图.
But there is a delay when it comes back from the background. Or in other words, you can see the previous view, then you see the ViewController. I don't want to show the previous view at all.
如何实现呢?
推荐答案
在应用程序后台运行之前，在您的应用程序委托的applicationDidEnterBackground:方法中隐藏旧视图.实际上，这是Apple出于隐私原因特别推荐的一种机制此处:
Hide the old view before the app is backgrounded, in your app delegate's applicationDidEnterBackground: method. This is in fact a mechanism that Apple specifically recommends for privacy reasons here:
这篇关于Xcode-当应用程序处于活动状态时(从后台返回)显示ViewController的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持！