I'm using a WKWebview to run javascript scripts.
I am not using JSContext et.al since I need the javascript context to be able to perform XHTTP requests which aren't possible with JSContext alone.
This view is not added to the view hierarchy and I have no interest to do so.
The WKWebview is only used for its ability to run JS code in its engine.
The javascript code is working exactly as expected on the simulator.
The exact same code will also work in the context of certain other applications which I've tested with.
But for some reason in certain applications the WKWebview will not perform the javascript unless the WKWebview is added to the view hierarchy. The following code will work as expected. If removing the #warning code , stops working as expected
-(void)connect {
//TODO: Handle multiple connect calls
WKUserContentController *userContentController = [WKUserContentController new];
[self addScriptMessageHandlersForSocketEvents:userContentController];
NSString *socketFileContent = [self.class socketIOScript];
WKUserScript *socketIOScript = [[WKUserScript alloc] initWithSource:socketFileContent
injectionTime:WKUserScriptInjectionTimeAtDocumentStart
forMainFrameOnly:NO];
[userContentController addUserScript:socketIOScript];
NSString *bridgeJs = [self.class bridgeScript];
WKUserScript *bridgeScript = [[WKUserScript alloc] initWithSource:bridgeJs
injectionTime:WKUserScriptInjectionTimeAtDocumentStart
forMainFrameOnly:NO];
[userContentController addUserScript:bridgeScript];
NSMutableDictionary *d = [NSMutableDictionary new];
for (NSURLQueryItem *item in _parameters) {
d[item.name] = item.value;
}
NSString *params = json(d);
NSString *socketURLScript = [NSString stringWithFormat:@"createSocket(%@,%@);log('created script')",stringify(_url),params];
WKUserScript *createSocket = [[WKUserScript alloc] initWithSource:socketURLScript
injectionTime:WKUserScriptInjectionTimeAtDocumentEnd
forMainFrameOnly:NO];
[userContentController addUserScript:createSocket];
WKWebViewConfiguration * wkconfiguration = [WKWebViewConfiguration new];
wkconfiguration.userContentController = userContentController;
_wv = [[WKWebView alloc] initWithFrame:CGRectMake(0, 0, 0, 0) configuration:wkconfiguration];
#warning REMOVE THIS AND THE WKWebview stops working on some devices (NOT ALL DEVICES) and works in some applications as expected
[[UIApplication sharedApplication].keyWindow addSubview:_wv];
// END REMOVE THIS
_wv.navigationDelegate = self;
dispatch_group_enter(_loadedSemaphore);
[_wv loadHTMLString:@"<h1></h1>" baseURL:nil];
}
