ios - iOS UIwebview 缩放比例检测

Question

我有一个UIWebview我有SWIPERIGHT 和 LEFT 手势移动到下一页的地方UIwebview。当webview缩放时，我不想允许 SWIPE GESTURE。我已经在ViewdidLoad.

webView = [[UIWebView alloc]initWithFrame:self.view.bounds];
webView.frame = CGRectMake(30, 106,966,500);
webView.scrollView.bounces = NO;
webView.scrollView.delegate = self;
webView.scalesPageToFit = YES;
[self.view addSubview:webView];

我还在 ViewdidLoad 中添加了 Gesture：

//Swipe Gesture for Webview
    swipeRight = [[UISwipeGestureRecognizer alloc] initWithTarget:self action:@selector(swipeRightAction)];
    swipeLeft = [[UISwipeGestureRecognizer alloc] initWithTarget:self action:@selector(swipeLeftAction)];

    swipeRight.direction = UISwipeGestureRecognizerDirectionRight;
    swipeRight.delegate = self;
    [webView addGestureRecognizer:swipeRight];

    swipeLeft.direction = UISwipeGestureRecognizerDirectionLeft;
    swipeLeft.delegate = self;
    [webView addGestureRecognizer:swipeLeft];

缩放完成后，手势不应发生。我该如何解决这个问题？