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https://issues.apache.org/jira/browse/CB-6884?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14019375#comment-14019375
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Shazron Abdullah commented on CB-6884:
--------------------------------------
It looks like in iOS 8 beta 1 there is no way to do WKWebView Obj-C -> JS
communication at arbitrary times (only allowed at document start and loaded),
so Cordova is handcuffed (plugins are useless).
https://devforums.apple.com/message/975230#975230
> Support new Cordova bridge under iOS 8 WKWebView
> ------------------------------------------------
>
> Key: CB-6884
> URL: https://issues.apache.org/jira/browse/CB-6884
> Project: Apache Cordova
> Issue Type: Bug
> Components: CordovaJS, iOS
> Environment: iOS 8 beta 1
> Reporter: Shazron Abdullah
> Assignee: Shazron Abdullah
> Fix For: 3.6.0
>
>
> https://developer.apple.com/library/prerelease/ios/releasenotes/General/RN-iOSSDK-8.0/index.html
> WKUserContentController - add a script message handler with name "cordova":
> https://developer.apple.com/library/prerelease/ios/documentation/WebKit/Reference/WKUserContentController_Ref/index.html#//apple_ref/swift/cl/WKUserContentController
> The WKUserContentController is associated with a WKWebViewConfiguration which
> is initialized with a WKWebView.
> {code}
> WKUserContentController userContentController = [[WKUserContentController
> alloc] init];
> // scriptMessageHandler is the object that conforms to the
> WKScriptMessageHandler protocol
> // see
> https://developer.apple.com/library/prerelease/ios/documentation/WebKit/Reference/WKScriptMessageHandler_Ref/index.html#//apple_ref/swift/intf/WKScriptMessageHandler
> [userContentController addScriptMessageHandler:scriptMessageHandler
> name:@"cordova"];
> {code}
> In JavaScript, you would call into Objective-C thus:
> {code}
> var command = { callbackId: "blabla23", service:"Camera", action:
> "takePicture", actionArgs: [ 1, 2, 3 ] };
> window.webkit.messageHandlers.cordova.postMessage(command);
> {code}
> In the object that conforms to the WKScriptMessageHandler protocol:
> {code}
> - (void)userContentController:(WKUserContentController
> *)userContentController didReceiveScriptMessage:(WKScriptMessage *)message
> {
> if (![message.name isEqualToString:@"cordova"]) {
> return;
> }
> NSDictionary* command = message.body;
> // TODO: get the callbackId, service, action, actionArgs keys and create
> a CDVInvokedUrlCommand, and dispatch it
> }
> {code}
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