Question

在我的应用程序中，我有一个带左右swipegesturerecognizers的webview。问题是当我放大webview时。似乎swipegesturerecognizers扰乱webview scrollview委托和webview缩放工作不好。我怎么能正确地做到这一点？

- (void)viewDidLoad
{
  [super viewDidLoad];
  UISwipeGestureRecognizer *swipeRight = [[UISwipeGestureRecognizer alloc] initWithTarget:self  action:@selector(swipeRightAction:)];
  swipeRight.direction = UISwipeGestureRecognizerDirectionRight;
  swipeRight.delegate = self;
  [webView addGestureRecognizer:swipeRight];

  UISwipeGestureRecognizer *swipeLeft = [[UISwipeGestureRecognizer alloc] initWithTarget:self action:@selector(swipeLeftAction:)];
  swipeLeft.direction = UISwipeGestureRecognizerDirectionLeft;
  swipeLeft.delegate = self;
  [webView addGestureRecognizer:swipeLeft];
}

- (BOOL)gestureRecognizer:(UIGestureRecognizer *)gestureRecognizer shouldReceiveTouch:(UITouch *)touch
{
  return YES;
}

- (void)swipeRightAction:(id)ignored
{
  NSLog(@"Swipe Right");
  //add Function
}

- (void)swipeLeftAction:(id)ignored
{
  NSLog(@"Swipe Left");
  //add Function
}

我解决了它改变上面的委托方法：

- (BOOL)gestureRecognizer:(UIGestureRecognizer *)gestureRecognizer shouldRecognizeSimultaneouslyWithGestureRecognizer:(UIGestureRecognizer *)otherGestureRecognizer
{
   return YES;
}

Answer 1

您已经回答了自己的问题，但我会为将来发现此问题的人添加此答案：

如果您只需要支持iOS 8+，则可以使用新WKWebView框架中的WebKit替换UIWebView。 WKWebView支持开箱即用的后退/前进（您需要将其allowsBackForwardNavigationGestures属性设置为YES（默认为NO））。这意味着您不需要为后退/前进滑动添加自己的手势识别器。

它的行为就像Safari一样，这意味着它可以很好地处理前进/后退滑动和缩放手势之间的区别。

Answer 2

我解决了它改变上面的委托方法：

- (BOOL)gestureRecognizer:(UIGestureRecognizer *)gestureRecognizer shouldRecognizeSimultaneouslyWithGestureRecognizer:(UIGestureRecognizer *)otherGestureRecognizer
{
    return YES;
}

iOS webview swipegesturerecognizer和缩放

2 个答案: