Question

我有一个UIViewController（称之为SubUIVC），它是通过我的主要UIViewController（称之为MainUIVC）使用我的showNewView方法加载的，当我完成SubUIVC时，我使用goBack方法返回MainUIVC。

我想做的是在完成goBack方法并加载我的MainUIVC.view后，在MainUIVC中执行一些代码。

任何人都可以帮我这样做吗？以下是我参考上面提到的两种方法。

-(void) showNewView:(UIViewController*)showView{    
UIView *currentView = self.view;

    // get the the underlying UIWindow, or the view containing the current view
    UIView *theWindow = [currentView superview];    
    UIView *newView = showView.view; 

    // remove the current view and replace with newView
    [theWindow addSubview:newView];

    // set up an animation for the transition between the views
    CATransition *animation = [CATransition animation];
    [animation setDuration:WIPE_ANIMATION_DURATION];
    [animation setType:kCATransitionPush];
    [animation setSubtype:kCATransitionFromRight];
    [animation setTimingFunction:[CAMediaTimingFunction functionWithName:kCAMediaTimingFunctionEaseInEaseOut]];

    [[theWindow layer] addAnimation:animation forKey:@"SwitchToNewView"];
}

-(IBAction)goBack:(id)sender{       
    UIView *currentView = self.view;

    // get the the underlying UIWindow, or the view containing the current view
    UIView *theWindow = [currentView superview];

    // remove the current view and replace with superview
    [currentView removeFromSuperview];

    // set up an animation for the transition between the views
    CATransition *animation = [CATransition animation];
    [animation setDuration:WIPE_ANIMATION_DURATION];
    [animation setType:kCATransitionPush];
    [animation setSubtype:kCATransitionFromLeft];
    [animation setTimingFunction:[CAMediaTimingFunction functionWithName:kCAMediaTimingFunctionEaseInEaseOut]];

    [[theWindow layer] addAnimation:animation forKey:@"SwitchToNewView"];
}

Answer 1

在MainController中有一个BOOL属性，而不是goBack：function设置的get属性。

在主控制器的viewDidAppear：中，检查BOOL以查看视图是否因goback而出现：被调用并做你的事情。显然你应该重置那个标志。

如何在removefromsuperview之后执行方法

1 个答案: