如何翻转单个UIView（不翻转父视图） [英] How to flip an individual UIView (without flipping the parent view)

问题描述

这是一个iPad项目，我有一个带有几个子视图的UIView，我试图使用[UIView transitionFromView：toView：duration：options：completion]为其中一个UIViews制作动画，但当我运行此方法时，整个父项视图被翻转！
这是我正在使用的代码：

This is an iPad project where I have a UIView with several subViews, and I am trying to animate one of this UIViews using [UIView transitionFromView:toView:duration:options:completion], but when I run this method the whole parent view gets flipped! This is the code I'm using:

UIView *secondView = [[UIView alloc] initWithFrame:CGRectMake(200, 200, 300, 300)];
[newView setBackgroundColor:[UIColor redColor]];
    [UIView transitionFromView:self.firstView.view toView:secondView duration:1.0 options:UIViewAnimationOptionTransitionFlipFromLeft completion:nil];

如何在不动画整个父视图的情况下在这些视图之间切换？
谢谢！

Any idea on how can I flip between this views without animating the whole parent view? Thanks!

推荐答案

此代码可以帮助您：

将要翻转的两个视图放在一个大小为
的未命名视图中，并将 IBOutlet UIView * newView，* oldView; 链接到视图和将新视图置于顶部

put the two views you want to flip inside an unnamed view with the same size and link the IBOutlet UIView *newView,*oldView; to the views and put the new view on top

bool a = NO;

@implementation ViewController

- (IBAction)flip:(id)sender 
{
    if (a == NO) {
        [UIView transitionFromView:oldView toView:newView  
                  duration:1.0 
                  options:UIViewAnimationOptionTransitionFlipFromLeft 
                  completion:NULL];
        a = YES; // a = !a;
    }
    else {
        [UIView transitionFromView:newView toView:oldView  
                  duration:1.0 
                  options:UIViewAnimationOptionTransitionFlipFromLeft 
                  completion:NULL];
        a = NO; // a = !a;
    }
}

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