iOS webview swipegesturerecognizer and zoom

Question

在我的应用程序中，我有一个带有左右滑动手势识别器的 web View 。问题是当我放大 webview 时。似乎 swipegesturerecognizers 正在干扰 webview ScrollView 委托(delegate)，并且 webview 缩放效果不佳。我怎样才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
}

我用这个解决了它改变上面的委托(delegate)方法:

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

Answer 1

您已经回答了自己的问题，但我将为将来发现此问题的人添加此答案:

如果只需要支持iOS 8+，可以使用WKWebView来自新 WebKit框架，替换 UIWebView . WKWebView支持开箱即用的向后/向前滑动(您需要将其 allowsBackForwardNavigationGestures 属性设置为 YES(默认为 NO ))。这意味着您无需为向后/向前滑动添加自己的手势识别器。

它的行为就像 Safari，这意味着它很好地处理了向前/向后滑动和缩放手势之间的区别。