swift -> WKWebView

 

** Solve the problem of webView loading URLs containing Chinese

Convert Chinese and other non-English characters in URL URLEncode

extension String {
    func urlEncodeIfNeed() -> String {
        if let url:URL = URL(string: self){
            if(UIApplication.shared.canOpenURL(url) == true){
                return self;
            }
        }
        return NSString.init(string: self).addingPercentEncoding(withAllowedCharacters: NSCharacterSet.urlQueryAllowed)!
    }

}

 

 

** Clear webView cache 

 

let websetDataType = WKWebsiteDataStore.allWebsiteDataTypes();
let dateFrom:NSDate = NSDate.init(timeIntervalSince1970: 0)
WKWebsiteDataStore.default().removeData(ofTypes: websetDataType, modifiedSince: dateFrom as Date, completionHandler: {
    print("clear done")
})

  

//The type of WKWebsiteDataStory is
let cookie = WKWebsiteDataTypeCookies;//cookies of the URL
let disCache = WKWebsiteDataTypeDiskCache;//Disk cache files, such as image files
let WebApplicationCache = WKWebsiteDataTypeOfflineWebApplicationCache;//Offline data
let MemoryCache = WKWebsiteDataTypeMemoryCache;//Memory cache
let LocalStorage = WKWebsiteDataTypeLocalStorage;//The website writes the local data through the code
let SessionStorage = WKWebsiteDataTypeSessionStorage;//The website is written to the local session through code
let IndexedDBDatabases = WKWebsiteDataTypeIndexedDBDatabases;//
let WebSQLDatabases = WKWebsiteDataTypeWebSQLDatabases;//

 

 If IOS 8 does not support the above method of clearing the cache, it is compatible with clearing, and manually delete the Library/Caches folder, etc.

http://mft.iteye.com/admin/blogs/2381013

 

You can also delete the folder under document directly as needed

http://mft.iteye.com/admin/blogs/2394856 

 

** Solve the problem of opening a new window with target = "_blank"

import WebKit

Extend your class with WKUIDelegate

Set delegate for webview 

self.webView.uiDelegate = self

Implement protocol method

    func webView(_ webView: WKWebView, createWebViewWith configuration: WKWebViewConfiguration, for navigationAction: WKNavigationAction, windowFeatures: WKWindowFeatures) -> WKWebView? {
        if navigationAction.targetFrame == nil {
            //webView.load(navigationAction.request)
            print(navigationAction.request);
            print("new target")
        }
        return nil
    }

 

  

 

** Get the URL of the previous page

wb.backForwardList.backItem?.url.absoluteString

 

** Determine whether the currently loaded page is by returning or forwarding or submitting a form, etc.

    func webView(_ webView: WKWebView, decidePolicyFor navigationAction: WKNavigationAction, decisionHandler: @escaping (WKNavigationActionPolicy) -> Void) {
        if(navigationAction.navigationType != .backForward){
                   
        }
      

 

 ** Remove the rubber band effect when pulling down

wkWebView.scrollView.bounces = false;

 

** load hml string

        let jsUrl:String = "https://xw.qq.com";
        
        var source:String = "";
        let js_url = NSURL(string: jsUrl);
 
        do {
            print("1")
            let data = try NSString(contentsOf: js_url! as URL, encoding: UInt(String.Encoding.utf8.hashValue))
            print("2")
            source = data as String;
            print(source);
            print("3")
        } catch {
            print("jjj false")
        }
        print("done")
        

        if(source != ""){
            let wk:WKWebView = WKWebView(frame: self.view.frame);
            wk.loadHTMLString(source, baseURL: js_url! as URL)
            self.view.addSubview(wk)
        }

 

 

--------------------------------WKWebView 其他相关 知识 参考 ----------------------------------------------

swift -> WKWebView 滚动 监听 ，设置 滚动位置

swift -> WKWebView 进度条 加载 

 

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