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标题: objective-c - 通过滑动 UIView 滑出导航以覆盖另一个 UIView [打印本页]

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作者: 菜鸟教程小白    时间: 2022-12-13 15:45
标题: objective-c - 通过滑动 UIView 滑出导航以覆盖另一个 UIView

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 Notification Center，您只需从顶部滑动即可显示 view，然后只需向后滑动即可再次隐藏它。就我而言，我希望通过向左滑动手势显示来自屏幕右侧的隐藏 UIView 并通过相同的手势再次隐藏它(这次是向右)。

我已经设法在我之前的 post 上找到了解决方案关于显示/隐藏 UIView。我想添加的一件事是滑动手势。

我不想像 Nick Harris 所做的那样调整我的应用程序委托(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。

揭示一些亮点

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Best Answer-推荐答案

您可以通过向左滑动手势显示来自屏幕右侧的隐藏 UIView，也可以通过相同手势再次隐藏它(这次是向右)。添加过渡。

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

为您的 self.view 添加具有不同选择器的左右方向的滑动手势。

 UISwipeGestureRecognizer *recognizer;
recognizer = [[UISwipeGestureRecognizer alloc] initWithTarget:self actionselector(swipeRight];
[recognizer setDirection:UISwipeGestureRecognizerDirectionRight];
[[self view] addGestureRecognizer:recognizer];
[recognizer release]; 

UISwipeGestureRecognizer *recognizer1;
recognizer1 = [[UISwipeGestureRecognizer alloc] initWithTarget:self actionselector(swipeleft];
[recognizer1 setDirection:UISwipeGestureRecognizerDirectionLeft];
[[self view] addGestureRecognizer:recognizer1];
[recognizer1 release]; 

当向左滑动时调用此方法:

 -(void)swipeleftUISwipeGestureRecognizer *)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)];
   }
 }

当向右滑动此方法时:

 -(void)swipeRightUISwipeGestureRecognizer *)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];
   }
 }

关于objective-c - 通过滑动 UIView 滑出导航以覆盖另一个 UIView，我们在Stack Overflow上找到一个类似的问题： https://stackoverflow.com/questions/12066200/

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