viewDidAppear用于基于tabbar的应用程序 [英] viewDidAppear for tabbar based apps

问题描述

当特定标签页出现时，我想执行某些操作。这意味着，用户已经点击了标签视图的标签按钮。发生这种情况时，viewDidAppear不会触发。

解决方案

您可以实现此

   - （void）tabBarController：（UITabBarController *）tabBarController didSelectViewController：（UIViewController *）viewController {
 [viewController viewDidAppear：YES]; 
} 
  

，因此您的viewDidAppear方法将被正确调用。 / p>

I'd like to do something when a particular tab appears. Meaning, the user has clicked the tab view's tab button. viewDidAppear doesn't fire when this happens. How else can I hook into the tab click event?

解决方案

You can implement this

- (void)tabBarController:(UITabBarController *)tabBarController didSelectViewController:(UIViewController *)viewController{
  [viewController viewDidAppear:YES];
}

in your Tab Bar Delegate, so your viewDidAppear method will be called properly.

这篇关于viewDidAppear用于基于tabbar的应用程序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IT屋！