objective-c - 通过 UIView 的滑动滑出导航以覆盖另一个 UIView

Question

在我对这种导航技术的研究中，我发现了 this post by Nick Harris我想这是一个好的开始。但是，我想要的与此略有不同。您可以将其视为 iOS 的通知中心，您只需从顶部滑动即可显示 View ，然后向后滑动即可再次隐藏它。在我的例子中，我希望通过向左滑动手势从屏幕右侧显示一个隐藏的 UIView 并通过相同的手势(这次向右)再次隐藏它。

我已经设法解决了我以前的 post关于显示/隐藏 UIView。我想添加的一件事是滑动手势。

我不想像 Nick Harris 那样调整我的应用委托(delegate)来执行此操作。因此，如果有人对我如何做到这一点有任何想法/代码示例，我将不胜感激。

阐明一些光:)

Answer 1

您可以通过向左滑动手势从屏幕右侧显示一个隐藏的 UIView，也可以通过相同的手势(这次向右滑动)再次隐藏它。添加过渡。

在 .h 文件中添加 BOOL didNotSwipe 在 .m 文件中添加其值 didNotSwipe = TRUE viewDidLoad 方法

将带有不同选择器的左右方向滑动手势添加到您的 self.view。

 UISwipeGestureRecognizer *recognizer;
recognizer = [[UISwipeGestureRecognizer alloc] initWithTarget:self action:@selector(swipeRight:)];
[recognizer setDirection:UISwipeGestureRecognizerDirectionRight];
[[self view] addGestureRecognizer:recognizer];
[recognizer release]; 

UISwipeGestureRecognizer *recognizer1;
recognizer1 = [[UISwipeGestureRecognizer alloc] initWithTarget:self action:@selector(swipeleft:)];
[recognizer1 setDirection:UISwipeGestureRecognizerDirectionLeft];
[[self view] addGestureRecognizer:recognizer1];
[recognizer1 release]; 

当向左滑动时调用此方法:

 -(void)swipeleft:(UISwipeGestureRecognizer *)swipeGesture 
 {
   if (didNotSwipe) {
     didNotSwipe = FALSE;
     CATransition *animation = [CATransition animation];
     [animation setDelegate:self];
     [animation setType:kCATransitionPush];
     [animation setSubtype:kCATransitionFromRight];
     [animation setDuration:0.50];
     [animation setTimingFunction:
     [CAMediaTimingFunction functionWithName:kCAMediaTimingFunctionEaseInEaseOut]];
     [self.view.layer addAnimation:animation forKey:kCATransition];
     [self.view addSubView:self.overlayView];
     //[self.overlayView setFrame:CGRectMake(0,0,self.overlayView.frame.size.width,self.overlayView.frame.size.height)];
   }
 }

当向右滑动时这个方法:

 -(void)swipeRight:(UISwipeGestureRecognizer *)swipeGesture
 {
   if(!didNotSwipe){
     didNotSwipe = TRUE;
     CATransition *animation = [CATransition animation];
     [animation setDelegate:self];
     [animation setType:kCATransitionPush];
     [animation setSubtype:kCATransitionFromLeft];
     [animation setDuration:0.40];
     [animation setTimingFunction:
     [CAMediaTimingFunction functionWithName:kCAMediaTimingFunctionEaseInEaseOut]];
     [self.view.layer addAnimation:animation forKey:kCATransition];
     [self.overlayView removeFromSuperView];
   }
 }