iOS UIWebView 泄露

Question

class MyViewController: UIViewController {
     @IBOutlet weak var webView: UIWebView?
     override func viewDidLoad() {
    super.viewDidLoad()

    let url = NSURL(string: urlString)
    let request = NSURLRequest(URL: url!)
    SVProgressHUD.show()

    webView?.loadRequest(request)
    webView?.scrollView.header = MJRefreshNormalHeader(refreshingBlock: {

      [weak self] in
      if let strongSelf = self {
        strongSelf.webView?.reload()
      }})   }
     override func viewDidDisappear(animated: Bool) {
    super.viewDidDisappear(animated) 

    SVProgressHUD.dismiss()   }    }

extension MyViewController: UIWebViewDelegate {
     func webViewDidFinishLoad(webView: UIWebView) {
    webView.scrollView.header.endRefreshing()
    SVProgressHUD.dismiss()   }       func webView(webView: UIWebView, didFailLoadWithError error: NSError?) {
    webView.scrollView.header.endRefreshing()
    SVProgressHUD.dismiss()   }    }

View Controller 由导航 Controller 推送，当我弹出它时，我得到了泄漏。在 instrument.Leak 我看到了这些。

#

Leaked Object   #   Address Size    Responsible Library Responsible Frame NSMutableArray    1   0x137a6ddb0 48 Bytes    UIKit   -[_UIKeyboardTextSelectionGestureController init]
_UIKeyboardTextSelectionController  1   0x137a6e800 96 Bytes    UIKit   -[UIWebSelectionAssistant addNonEditableForceTextSelectionGestureRecognizersToView:]
_UIKeyboardBasedNonEditableTextSelectionGestureController   1   0x137a6dcd0 160 Bytes   UIKit   -[UIWebSelectionAssistant addNonEditableForceTextSelectionGestureRecognizersToView:]

#

我确定 webView、myViewController 被延迟了，但是当弹出 myViewController 时，4M 增加了并且没有释放。请帮忙，谢谢。

列表项

Answer 1

根据 an answer posted here ，有一个解决方法，如果您将 configuration.selectionGranularity 设置为 WKSelectionGranularityCharacter，泄漏就会停止:

let config = WKWebViewConfiguration()
config.selectionGranularity = .character //WKSelectionGranularityCharacter
let myWebview = WKWebview(frame: frame, configuration: config)

This worked for me, but then, when selecting text, there was no selection rectangle in the webview.对于您的情况，这可能是也可能不是可行的解决方法。

编辑 我刚刚注意到您的问题是针对 UIWebView 的，而不是针对 WKWebView 的。看起来你不能在 UIWebView 上设置它。我暂时留下这个答案，因为 WKWebView 的人用谷歌搜索这个内存泄漏可能会找到这个线程......