我正在尝试在 WkWebView 中实现自定义 peek/pop 行为。我看到委托被调用并且控制器被返回，但是 peek 控制器没有出现。
我只能通过设置 self.webView?.userInteractionEnabled = false 来显示 peek 控制器
这里会发生什么？
代码：
class ViewController: UIViewController, WKNavigationDelegate, UIViewControllerPreviewingDelegate {
var webView: WKWebView?
func webView(webView: WKWebView,
decidePolicyForNavigationResponse navigationResponse: WKNavigationResponse,
decisionHandler: ((WKNavigationResponsePolicy) -> Void)){
decisionHandler(.Allow)
}
override func viewDidLoad() {
super.viewDidLoad()
/* Create our preferences on how the web page should be loaded */
let preferences = WKPreferences()
preferences.javaScriptEnabled = true
/* Create a configuration for our preferences */
let configuration = WKWebViewConfiguration()
configuration.preferences = preferences
/* Now instantiate the web view */
webView = WKWebView(frame: view.bounds, configuration: configuration)
if let theWebView = webView{
/* Load a web page into our web view */
let url = NSURL(string: "http://www.apple.com")
let urlRequest = NSURLRequest(URL: url!)
theWebView.loadRequest(urlRequest)
theWebView.navigationDelegate = self
view.addSubview(theWebView)
}
self.registerForPreviewingWithDelegate(self, sourceView: self.view)
}
func previewingContext(previewingContext: UIViewControllerPreviewing, viewControllerForLocation location: CGPoint) -> UIViewController? {
self.webView?.userInteractionEnabled = false
let peekViewController = storyboard!.instantiateViewControllerWithIdentifier("peekaboo") as UIViewController
/*
Set the height of the preview by setting the preferred content size of the detail view controller.
Width should be zero, because it's not used in portrait.
*/
peekViewController.preferredContentSize = CGSize(width: 0.0, height: 0.0)
// Set the source rect to the cell frame, so surrounding elements are blurred.
//previewingContext.sourceRect = (self.webkitWebView?.frame)!
return peekViewController
}
/// Present the view controller for the "Pop" action.
func previewingContext(previewingContext: UIViewControllerPreviewing, commitViewController viewControllerToCommit: UIViewController) {
// Reuse the "Peek" view controller for presentation.
}
}