里面的UIScrollView UIScrollView的(UIScrollView inside

我有一个UIScrollView与其他UIScrollView内。 他们都是水平滚动，并pagingEnabled = YES 。 假设我开始滚动内滚动视图，并达成最右边的束缚。 如果我在它进行下去滚动，然后滚动视图外开始移动。 我需要避免这种情况。 内部景观应与橡皮筋效应跳，外应留在它的地方。

希望这是明确的，但这里是一个草图：

我试着设置outerView.scrollEnabled = NO; 像这样：

- (void)scrollViewWillBeginDragging:(UIScrollView *)scrollView
{
    outerView.scrollEnabled = NO;
}

和它的工作原理正是我所需要的，如果只是在innerView滚动。 OuterView不再被滚动。 但是，我必须设置scrollEnabled回是某处的情况下，如果我想再次滚动outerView。 我试图在这里做它：

- (void)scrollViewDidEndDecelerating:(UIScrollView *)scrollView
{
    outerView.scrollEnabled = YES;
}

，但比我得到了同样的问题：到达后最右边的约束innerView outerView滚动，而不是innerView用橡皮筋效应跳跃。

任何建议如何解决问题？

Answer 1:

UPDATE

该解决方案的工作总是：

@implementation InnerScrollViewController <UIScrollViewDelegate, UIGestureRecognizerDelegate>

- (void)viewDidLoad
{
    UISwipeGestureRecognizer*   swipeGesture = [[[UISwipeGestureRecognizer alloc] initWithTarget:self action:@selector(handleSwipe:)] autorelease];
    swipeGesture.delegate = self;
    [self.view addGestureRecognizer:swipeGesture];
}

- (BOOL)gestureRecognizer:(UIGestureRecognizer *)gestureRecognizer shouldReceiveTouch:(UITouch *)touch
{
    _outerScrollView.scrollEnabled = NO;
    return YES;
}

- (void)handleSwipe:(UIGestureRecognizer*)gestureRecognizer
{

}

- (void)scrollViewWillBeginDragging:(UIScrollView *)scrollView
{   
    _outerScrollView.scrollEnabled = NO;
}

- (void)scrollViewDidEndDragging:(UIScrollView *)scrollView willDecelerate:(BOOL)decelerate
{
    if (!decelerate)
    {
        _outerScrollView.scrollEnabled = YES;
    }
}

- (void)scrollViewDidEndDecelerating:(UIScrollView *)scrollView
{
    _outerScrollView.scrollEnabled = YES;
}

@end

-------------------------------------------------- ---------------------

OLD答：并不总是工作

这里是我解决了这个问题：

@implementation InnerView

- (id)initWithFrame:(CGRect)frame
{
    self = [super initWithFrame:frame];
    if (self) {
        self.delaysContentTouches = NO;
    }
    return self;
}

- (BOOL)touchesShouldBegin:(NSSet *)touches withEvent:(UIEvent *)event inContentView:(UIView *)view
{
    return NO;
}

据我所知， self.delaysContentTouches = NO; 使得所有事件将被立即传递，和- (BOOL)touchesShouldBegin:(NSSet *)touches withEvent:(UIEvent *)event inContentView:(UIView *)view防止这些事件的通过由响应链。

Answer 2:

修改你的方法通过以下方式：

- (void)scrollViewWillBeginDragging:(UIScrollView *)scrollView
{
    if(scrollView == innerView)
        outerView.scrollEnabled = NO;
    else
        outerView.scrollEnabled = YES;
}

- (void)scrollViewDidEndDecelerating:(UIScrollView *)scrollView
{
    if(scrollView == innerView)
    {
         if(innerView.contentOffset.x + innerView.frame.size.width == innerView.contentSize.width)
         {
              outerView.scrollEnabled = NO;
         }
         else
         {
              outerView.scrollEnabled = YES;
         }
    }
}

Answer 3:

我有一个类似的问题。 我找到了解决方案，但它仅适用于innerScrollView.bounces = NO 。

@interface PageCtrl ()
    @property (weak, nonatomic) IBOutlet UIScrollView *innerScrollView;
    @property(nonatomic) UIPanGestureRecognizer *panLockScroll;
@end

@implementation PageCtrl
- (void)viewDidLoad {
    // ...
    self.innerScrollView.delegate = self;   

    self.innerScrollView.bounces = NO;   // disable bounces!

    self.panLockScroll = [[UIPanGestureRecognizer alloc]initWithTarget:self action:nil];
    self.panLockScroll.delegate = self;
    [self.innerScrollView addGestureRecognizer:self.panLockScroll];
}

- (BOOL)gestureRecognizer:(UIGestureRecognizer*)gestureRecognizer shouldRecognizeSimultaneouslyWithGestureRecognizer:(UIGestureRecognizer*)otherGestureRecognizer{
    if( gestureRecognizer == self.panLockScroll && 
        otherGestureRecognizer == self.innerScrollView.panGestureRecognizer ){
        return YES;
    }
    return NO;
}

@end

Answer 4:

这很适合我：

- (void)scrollViewWillBeginDragging:(UIScrollView *)scrollView
{
  outerScrollView.scrollEnabled = NO;
}

- (void)scrollViewDidEndDecelerating:(UIScrollView *)scrollView
{
  [NSTimer scheduledTimerWithTimeInterval:0.3
                                     target:[NSBlockOperation blockOperationWithBlock:^{ outerScrollView.scrollEnabled = YES; }]
                                   selector:@selector(main)
                                   userInfo:nil
                                    repeats:NO];
}

记得采纳的UIScrollViewDelegate在你的类声明并设置innerScrollView自我的代表（不分配的outerScrollView的代表）

文章来源: UIScrollView inside UIScrollView