我正在使用 WKWebView,我允许前后导航手势:
myWkWebView.allowsBackForwardNavigationGestures = true
现在,用户有两种返回方式:按下按钮或向左滑动。行为会有所不同,所以我想知道如何知道用户何时向左/向右滑动,以便我可以处理这个问题。
我查看了 WKNavigationDelegate 引用 (https://developer.apple.com/library/ios/documentation/WebKit/Reference/WKNavigationDelegate_Ref/),但找不到任何有用的东西。
有什么想法吗?
编辑
我忘了说我也尝试过添加滑动手势识别器,这样:
let swipeRight = UISwipeGestureRecognizer(target: self, action: #selector(MyVC.respondToSwipeLeftOrRight(_))
swipeRight.direction = UISwipeGestureRecognizerDirection.Right
let swipeLeft = UISwipeGestureRecognizer(target: self, action: #selector(MyVC.respondToSwipeLeftOrRight(_))
swipeLeft.direction = UISwipeGestureRecognizerDirection.Left
self.view.addGestureRecognizer(swipeRight)
self.view.addGestureRecognizer(swipeLeft)
myWkWebView.scrollView.panGestureRecognizer.requireGestureRecognizerToFail(swipeRight)
myWkWebView.scrollView.panGestureRecognizer.requireGestureRecognizerToFail(swipeLeft)
但是每次我向左或向右滑动时它们都不会触发。
private var currentBackForwardItem: WKBackForwardListItem?
private func handleBackForwardWebView(navigationAction: WKNavigationAction) {
if navigationAction.navigationType == .BackForward {
let isBack = webView.backForwardList.backList
.filter { $0 == currentBackForwardItem }
.count == 0
if isBack {
} else {
}
}
currentBackForwardItem = webView.backForwardList.currentItem
}
func webView(webView: WKWebView, decidePolicyForNavigationAction navigationAction: WKNavigationAction, decisionHandler: (WKNavigationActionPolicy) -> Void) {
handleBackForwardWebView(navigationAction)
decisionHandler(.Allow)
}
关于ios - 检测用户何时向左或向右滑动以在 WKWebView 上前后移动,我们在Stack Overflow上找到一个类似的问题: https://stackoverflow.com/questions/37251895/
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