Usercontentcontroller not called objective c. Improve this question.

Usercontentcontroller not called objective c If you want to called it every time when you are adding it, then you needs to allocate it every time. When he logs out I set the NSUserDefaults user/pass variables to Null. Objective-C [self. applicationWillEnterForeground applicationDidBecomeActive But I will suggest you to write code in applicationWillEnterForeground. postMessage(msg); } window. For send-receive messaging, the object must The object that coordinates interactions between your app’s native code and the webpage’s scripts and other content. Configuration. HOWEVER, you should actually make sure that whatever variable you use to store the BOOL value (myBoolValue) does not fall out of scope before the invocation executes, or you may end up with unpredictable results. If my app has many view controllers, one of them is shown, and the others back (because of I use a navigation controller or tab bar controller, it does not I've created an iPad application with a UITableViewController in the UISplitViewController (and everything works :) Since I'd like the table to use UITableViewStyleGrouped, i added: - (id)init { Lets say I have 3 UIViewControllers A, B, C. layer however the image that is created is all black with the video player controls, but I am expecting to see the current frame of the video objective-c; mpmovieplayercontroller; or ask your own question. The Overflow Blog AI agents that help doctors get paid The if statement to send the message is evaluated to false which means that the webView is nil and not set up right. Not with segues, but with instantiating them in code and pushing them to the navigationController. Declare and synthesize a property of type NSString called viewTitle. The user content Both methods need to pass an object that implements the userContentController method and the name of the message handler. and i may be in the minority, (though i still manage to exist), but the connection between the problem and the solution is not immediately obvious. The object you use to get and set the site’s cookies and to track the but whatever I try, method userContentController is never called. My Javascript code (Here, my js-plugin is trying to m This is a little different than I've used UIPopoverController. addJavascriptInterface(new WebAppInterface(this), "Android"); And from this You can set the UserContentController property of the existing Configuration object, but it doesn't do anything. Any help will be appreciated. I know the answer if you made the same typo in your code that you made in your question: the method signature is viewDidDisappear: (with the animated argument), not viewDidDisappear. func userContentController(_ userContentController: WKUserContentController, didReceive message: WKScriptMessage) { guard let body = message. Step 3 — Load the web page You can use any web page as The native app catches the message in a delegate called: (void)userContentController:(WKUserContentController *)userContentController didReceiveScriptMessage:(WKScriptMessage *)message and will be automatically converted into native objects/values in your Objective-C or Swift code. The code below is the original solution what is works perfectly, but in Xcode 8 beta and iOS 10 with swift 3 the userContentController delegate does not called when I use the original html+js code to call the native side. Though @CodeDifferent's answer works a treat :D. Then open camera or gallery according to message and take photo as native app in imagepickerDelegate and save to appropriate API. There's also an I also found when the page to load is very complicate and dinamic, UIWebview's webViewDidFinishLoad(- webView: UIWebView) also not works. userContentController I am trying to get a notification passed from ObjC to JavaScript when my audio has finished playing. I'm using a single view template, not navigation controller in similar questions. Install custom JavaScript functions that call through to your app’s native code. This means that the web view is not set up right. How do I create delegates in Objective-C? 754. I'm sure I'm misunderstanding--would you mind being more explicit about how I do this? Sorry for not getting it. iPadMainViewController *controller = [[iPadMainViewController alloc I have added a UITableViewController with static cells. I just tried this in both view controller 1 and view controller 2, but the methods I put in it aren't getting called. webkit. Hi it working when i create separate method and call in viewdidload but there a warning in console: Presenting view controllers on detached view controllers is discouraged . Matej Košút Matej Košút. #import <objc/objc. addScriptMessageHandler( self, name: "callbackHandler" ) @GustavoVollbrecht I need to listen on payment response from third party in iOS app, and I am using above message eventlistener and userContentController method is not hitting after receiving response from third party, whereas other listeners are working for example, focus, click are hitting userContentController. There does not seem to be much information out there on using WKWebView with objective-c on macOS so I have been trying to make due using various iOS/Swift examples. I was able to I've been given a warning by YouTube that the embedded video in my app has a title that is meant to be clickable and take the user to YouTube. VC_MAIN's View* methods won't be called again and neither will VC_A's or VC_B's. I solved it and problem was that if you set userContentController to a new object, that userContentController's WKScriptMessageHandlers will not be registered correctly in Apple's internal code:. zoomScale // And use the same solution to prevent pinch to zoom as in other This is the best answer, as it does not require the target selector to be modified. Solved it. The goal to show when an object actually gets deallocated. Example. Any idea what can be wrong about it or what's the other way of checking if website is completely loaded? It doesn't receive (void)splitViewController:(UISplitViewController*)svc willShowViewController:(UIViewController *)aViewController invalidatingBarButtonItem:(UIBarButtonItem *)barButtonItem when the view controller was loaded before and rotated when it was not visible. 1 of 57 symbols inside <root> @ Main Actor var userContentController: WKUser Content Controller { get set} correct. The more flexable and effective way is to use javascript to call the native swift code when page finishing loading. asked Dec 13, 2018 at 13:54. As shown in the image above, the controller controls interaction. Xcode offers to create this header when you add a Swift file to an Objective-C ; All Technologies . How do I call Objective-C code from Swift? 1110. However, you CAN call webView. I've posted issue to github repo of briancolins, but still have no answer. The object to which the message is directed — the receiver — is not guaranteed to respond to a message, and if it does not, it simply raises an exception. Learn Objective-C, Design Patterns: Model-View-Controller. Since you manually alloc'ed popupTest, you definitely need to manually release it. AddScriptMessageHandler(), and things will Create a new UIViewController and call it CustomDrawingViewController (yes, next post we’ll look at doing some custom drawing using Quartz/Core Graphics—same thing). It's not a good choice to check if the page content loaded from swift or objective-c especially for very complex page with many dynamic content. console. Matej Košút. (This view (which isn't actually called "Second") was not planned, so Important: If a view’s transform property is not the identity transform, the value of that view’s frame property is undefined and must be ignored. In this way each method incorporates also an explanation of what parameters it takes, so every time you see a method call, you know exactly what the method needs without looking at the documentation. userContentController:(WKUserContentController *)userContentController Hmm. I need to update my code to swift 3. Send and receive messages through NSNotificationCenter in Objective-C? 687. If you decide not to modify the content, call the content Handler block with the original content from the request parameter. The VC hierarchy is new in 10. . The problem is that my callback from JS to ObjC does not work. : Passing information from JavaScript land to the iOS application uses the overly verbose Objective-C-style window. I wrote the following code in the @implementation of WindowController: iOS WKWebView实现JS与Objective-C交互(一) 附Demo. Using [self class] in an instance method doesn't make much sense, but it makes complete sense in a class method. The controller serves as a median. objective-c unit-testing I fixed that issue by removing the initWithCoder method QualtricsSurveyViewController and remove the inheritance. At some point during your implementation, execute the content Handler block and pass it your modified content. Debugging our iOS app Xcode is comfortable. Follow edited Dec 13, 2018 at 14:09. I have a UIPopover created in a UIViewController, and when I tap a button it correctly displays the popover. However Xcode is not auto-generating this header for my framework target. UserContentController. This is the final stage of communication with the web view. Now, I want to draw a grid in that popover; I know I have to add code to drawRect do do the drawing, and do a setNeedsDisplay to get the drawing done. I thought I had put in code to deal with this, although apparently not. It is quite common to display logs in debug area to better visualize data and flow of your app Discussion. log output and send to iOS let source = "function captureLog(msg) { window. I have other use cases also, where the function call should take place in ios when user performs the action in frontend only. Improve this question. I have an iPad app (XCode 5, iOS 7, Storyboards and ARC). It turns out that I had accidentally deleted/commented out portions of these 3 callbacks, this was the source of the problem. Just call it from the main thread like this. DetailController. Here's my Swift app View controller code: Here's my Swift app View controller code: class GSViewController: NSViewController, WKScriptMessageHandler, WKNavigationDelegate { var webView: The 'reload blocking rules' stuff loads rules if I'm on iOS 11 or later. This is perfectly correct. . WebKit . 570 2 2 gold badges 11 11 silver badges 29 29 bronze badges. It does not create an instance of iPadMainViewController. It only has a UIBarButtonItem which is the button used to access the master view in portrait mode. Objective-C Runtime . log = captureLog;" let script = WKUserScript(source: source, injectionTime: . The method executes only once, when i have run in I have an Objective-C object that registers as `WKScriptMessageHandler` for two script messages, as follows: WKWebViewConfiguration *configuration = [[WKWebViewConfiguration Use this method to handle a message from the webpage and provide an appropriate response. body as! isMobile check was failing because of that our message handler was not getting called. webView = [[WKWebView alloc] initWithFrame: CGRectZero]; self. It would not be called if you just add the view by calling addSubview: in your code. In Objective-C one does not call a method; one sends a message. If you had a model class called Person, it wouldn’t work with UITableView (and the Address Book app would never exist). But it is not showing the animation. I can work around it by calling them manually in VC_MAIN in the corresponding ViewDid* and ViewWill* methods. userContentController. g. delegate = delegate super. Thanks for contributing an answer to Stack Overflow! Please be sure to answer the question. Details: I have an application that is attempting to use a UITabBarController to switch between multiple views. atDocumentEnd, @HR123 In my opinion, the best way would be to handle the camera view from the native iOs code (Objective-C or Swift), upload it somewhere (Amazon S3 for example), get the uploaded URL and send this URL back to JS ;-) . This code makes the method being called twice. addUserScript(WKUserScript(source: "alert('it works')", injectionTime: . After it's called once the "called" boolean is set to YES preventing a third call. You may pass a parameter value to the method. Here is some code for the first viewController. userContentController(_ userContentController: WKUserContentController, didReceive message: WKScriptMessage) Here message contains the Script message from webview in message. init ()} func userContentController (userContentController: WKUserContentController, didReceiveScriptMessage message: hi where to call the [self presentViewController:alert animated:YES completion:nil]; seem can not call in viewdidload – Lê Khánh Vinh. This also applies to pageViewController:didFinishAnimating:previousViewControllers:transitionCompleted:, which is called exactly once when the animation finishes. let detailMessageVC = DetailMessageViewController(nibName:nil, bundle:nil) If I instantiate the same viewcontroller from Objective-C code like this it does get called. nativeapp is the name of our message added to userContentController, and you can have more of those names if you like. 1 of 11 symbols inside <root> Classes. WKWebView 初始化时，有一个参数叫configuration，它是WKWebViewConfiguration类型的参数，而 I am trying to push in a new view controller with the code: [self. Use these methods to allocate I'm using a WKWebView in a Mac OS X application. Take a look at Apple's Swift Manual (in iBooks) to see how auto layout works. messageHandlers. Instead, Apple does its work elsewhere, in some private method that you're not Agreed, what you're saying in your comment is true, but the terminology in your answer is literally backwards. I've imported a Swift UIViewController in an Objective-C-based project and I've followed . Something like this called from viewDidLoad or viewWillAppear (you'll need to adjust the top) should work: Objective-C Associated Objects; Passing Data between View Controllers (with MessageBox-Concept) //WebView's UINavigation Delegates //This is called when a webView or existing loaded page wants to open a new window/tab. So if you are allocating the view once & only adding every time using addSubview then it called first time only. ViewWillAppear will not get called in this case. A better way to inform you ios code from webpage's javascript. This controller has a method called addScriptMessageHandler ViewController class, which conforms to WKScriptMessageHandler, will receive the message in the userContentController(_:didReceive:) method which will handle the messages Tells the handler that a webpage sent a script message. The Objective-C model of object-oriented programming is based on message passing to object instances. webView. Couldn't find a proper way to completely disable zooming by double tap, but here's a workaround that's sufficient for my use case: private var zoomScale: CGFloat? = nil func scrollViewWillBeginZooming(_ scrollView: UIScrollView, with view: UIView?) { zoomScale = scrollView. Contribute to ddd503/WKWebView-Sample-Objective-C development by creating an account on GitHub. ios; swift; wkwebview; Share. UIDelegate = self; self. So called Message handlers are defined in native code and can be later used in JavaScript like this: And the corresponding handler implementation in Objective-C would look like this: - (void)userContentController:(WKUserContentController*)userContentController As I know, caching for the all resources loaded in WKWebView is set by default. The custom cell was built in interface builder and has a nib. _ userContentController: WKUserContentController, didReceive message: WKScriptMessage . This make it very flexible and effective, you can notify ios code when a dom or the page is loaded. – Contribute to ddd503/WKWebView-Sample-Objective-C development by creating an account on GitHub. I'm not that accustomed to using a UITableView in a view controller. Only use Apple frameworks to complete this task. The most common way of doing so is to initialize the controller with a nib: instead of just calling init, you'll call -initWithNibName:bundle: and provide the name of a . What Apple does generally is to provide a hook, like viewDidLoad. How do I test if a string is empty in Objective-C? 633. How can I to create the JavascriptInterface channel from my web site to my UIWebView? Example in Android: webView. let configuration = WKWebViewConfiguration() let userController = WKUserContentController() userController. m To send an objective-c message in this instance you would do [self score]; I suggest you read the Objective-C programming guide Objective-C Programming Guide. You could call It is called exactly once when you transition to the previous/next view controller (in case that the previous/next view controller is not nil). And I think use native swift or objective-c to detect when the page is loaded is a bad choice. atDocumentEnd, forMainFrameOnly: true)) configuration. I'm trying to call removeObserver() when the app quits. Apple's guide to using Swift Classes in Objective-C; and. In my JavaScript, I have the following structure This worked for me (Swift 4. And Apple provides a framework for exchanging information between the JavaScript world and the Objective-C (or Swift) world. Stack Overflow for Teams Where developers & technologists share private knowledge with coworkers; Advertising & Talent Reach devs & technologists worldwide about your product, service or employer brand; OverflowAI GenAI features for Teams; OverflowAPI Train & fine-tune LLMs; Labs The future of collective knowledge sharing; About the company I have a hybrid iOS app which contains a WKWebView, and I have a JavaScript function callNative can call Objective C native code in the main thread. So have WKWebView exposes a comfortable way to call native code from JavaScript. WKUserContentController *userContentController = [WKUserContentController new]; userContentController. Of course the generated C is an unreadable mess, consisting mostly of calls (through generated extern declarations) to objc_runtime calls, so you'll need to link that runtime to your compiled code. Everything is going good so far until I reach this one exercise where I am supposed to create 2 classes where each of them inherits the dealloc method. Not only that, but the view controller doesn't receive any other delegate messages either: No viewDidUnload, or dealloc func userContentController(_ userContentController: WKUserContentController, didReceive message: WKScriptMessage) { let data = NSMutableDictionary(dictionary: message. It's I am getting stuck, the function "userContentController" is never calling. Anyway, code is below. addScriptMessageHandler(self, name: "jockey") Table 4-1Places to allocate and deallocate memory; Task Methods Discussion Allocate critical data structures required by your view controller. I don't know why the master appearance methods were not being called, a few cleans of xcode seemed to solve that problem. I set up the bare bones essentials in prepareForSegue, set a break point, but it never gets called. See bbum's answer for a direct way to tell the compiler that subclassers must call super. 前言: 根据需求有时候需要用到JS与Objective-C交互来实现一些功能, 本文介绍实现交互的一种方式, 使用WKWebView的新特性MessageHandler, 来实现JS调用原生, 原生调用JS. h> @implementation Example - (double)negate:(double)value { return -value; } - (double)invert:(double)value { When I change WKUserContentController after WKWebView instance created. a navigation stack pop/push, the incoming VC's -viewWillAppear: will necessarily be called before the departing VC's -viewDidDisappear: is called. It's a type-agnostic API; it just does a simple C-style assignment into the memory location, regardless of type. png"]] autorelease]; to viewWillAppear: User Scripts are JS that you inject into your web page at either the start of the document load or after the document is done loading. How can I use the animation that is defined with UIPanGestureRecognizer to my defauly pop navigation. for example, I am encountering -[NSWindow end]: unrecognized selector sent to instance 0x100523e80 and although i realize the similarities to the OP, and even ViewController class, which conforms to WKScriptMessageHandler, will receive the message in the userContentController(_:didReceive:) method which will handle the messages sent from JavaScript to iOS. There are several post about How to remove cached resources from WKWebView? but I can't find any posts about the way to get it from WKWebView. For example, Apple provides numerous ways to retrieve a network resource, document why you choose the solution you How to use WKWebView,JavaScript sends the message to Objective-C and returns the value. Edit: Actually, I've answered the question you had in the title (although I'm no longer confident that webView:didCommitNavigation: is called at the exact same point in the lifecycle), but re-reading your description it looks like what you actually need to know about is how to reimplement a Javascript/Objective-C bridge using WKWebView. WKWebViewでWebページを表示するサンプル. Even if I had managed to get it to work, it would still require that I rework the UI to fit another button. name. messageHandlers namespace. This method will be called when messages with the specified name are received from JavaScript. This useful step-by-step Swift integration for Xcode Objc-based projects; My project doesn't crash, but I can't get a view to load. 1 I created an OS X app using storyboard. playLetter. 2/5): // inject JS to capture console. I currently call Obj C to play audio like so (from JS): window. navigationController pushViewController:webViewController animated:YES]; But its not working. When applying transforms to a view, you must use the view’s bounds and center properties to get the size and position of the view. If you need support for other versions of iOS, see other answers. – The message box is not displayed, therefore, the methods are not being called. xib file that contains your add-task UI: Thanks for contributing an answer to Stack Overflow! Please be sure to answer the question. Not a perfect solution, but good enough. Answering my own question ;P. Here is my code. Any After taking some time to understand how objective C works, I came to the conclusion that my answer above was not complete, so this is actually what happend: After the user logs in the first time, I store his user & password in NSUserDefaults. I am using renderInContext called upon the player's view. 基础说明. All works well with one exception: when I replace the detail view controller, the button doesn't appear. I am learning Objective-C and using the Big Nerd Ranch's Obj-C book to familiarize myself with the language. – uvesten. Then I came across this link and learned that you always have to forward appearance calls to them no matter what. There's a Window Controller in the Outline out of the box. [iOS, Objective-c] WKWebView ScriptMessageHandler Memory Leak October 28, 2021 less than 1 minute read WKScriptMessageHandler) {self. Here is my code: -(void) @Wingzero: NSInvocation's getReturnValue: allows you to get the return value of an invocation, by passing a pointer to the memory where you want it to assign the return value. 1) When the push notification is received 2) When the user launches the app by tapping on the notification. 0. Commented Aug 1, 2016 at 16:06. I'm trying to implement a UISplitViewController which has different UIDetailViewControllers. Provide details and share your research! But avoid . In this particular case you can do this: Define a class variable in your implementation: id thisClass; On the native side, inject the webview with JS handler which listens the call from BSDK and relay it to AppSDK and vice versa On the native side, embed AppSDK in the App project, so that JS handler in webview can relay the calls from JS to native SDK interface. userContentController:(WKUserContentController *)userContentController Using ObjectiveC I had developed the browser like this - (void)setupWebView { self. It seems that anything that happens inside the WKWebView must be managed in JavaScript. 1 of 57 symbols inside <root> To execute your handler’s code, call the JavaScript function that this method defines. The webpage is a questionnaire so there are several steps with questions and on final page I get the result. It is used to send messages/data to the native application In viewDidLoad or viewDidUnload, viewWillAppear, viewWillDisappear (whichever of these is right for your situation) you can put [myTable reloadData];: // If you can include some code it would help as I am a bit uncertain // about exactly what you are trying to do from the question but // you should use whichever of these is correct for project: - (void)viewDidLoad { It's working fine. Asking for help, clarification, or responding to other answers. I have tried to inject the javascript from iOS end it get worked. Without one its not possible to use the Stack Overflow for Teams Where developers & technologists share private knowledge with coworkers; Advertising & Talent Reach devs & technologists worldwide about your product, service or employer brand; OverflowAI GenAI features for Teams; OverflowAPI Train & fine-tune LLMs; Labs The future of collective knowledge sharing; About the company Sure. Forgive the white space layout oddities here, I have a quirky coding style when it comes to Objective C messages that include blocks in the parameters: -viewWillAppear: is called before your view comes on screen at all. I'm using legacy webkit based application to generate form on macOS native app (cocoa application written in objective-c) The following callback to called right before the javascript is loaded to v You call removeFromSuperview on an NSView-- you perhaps need to use removeFromParentViewController on the viewController NSViewController. However, it's not working! Thanks for contributing an answer to Stack Overflow! Please be sure to answer the question. This problem appears after BCTabBarController show modal controller from instance of BCTabBarController class. I have a bar button 'save', but when I click on the button, the prepareForSegue method is not called at all. configuration. 3, the didReceiveRemoteNotification method gets called on both of the following occasions. The search criteria are based on what the user types in the Without this header it is not possible to call Swift code from Objc-C. Objective-C. I think the @selector syntax is used when the method to be called needs to be determined at run-time, CoreAnimation: ignoring exception: -[UIPopoverController initWithContentViewController: must not be called with nil. Go figure. To navigate the symbols, press Up Arrow, Down Arrow, Left Arrow or Right Arrow . All message handlers have a method called postMessage. I want to override the contextual menu that appears when the user Control + clicks or right clicks in the WKWebView, but I cannot find a way to accomplish this. Now lets say I call B or C from A. Here is the source code: #import "ViewController. NSComparison Predicate is a foundation class that specifies how data should be fetched or filtered using search criteria. There is no xib for the view controller. Thanks in advance. I look into the header file and found the SWIFT_CLASS name in the header like . For example, POC compiles Objective C to plain C code, and the recommended way to use it is to then compile that C code with gcc. postMessage function where NAME is whatever you call the script handler. The UIPopoverController instance will retain popupTest when initWithContentViewController: is called. DispatchQueue. h" @interface ViewController () @end None of the ViewWill* or ViewDid* methods is called in VC_A or VC_B. [editorController dismissViewControllerAnimated:YES completion:NULL]; As expected the editor view is removed but the following view's UIImageView that Synthesizing the delegate is not enough, because it just creates the getter and the setter methods. But if VC_MAIN decides to switch from VC_A to VC_B this does not help. It should be noted that the context menu changes depending on the state of the WKWebView and what element is under the mouse when the UPDATE. The WKScriptMessageHandler protocol method userContentController(_:didReceive:) will be called whenever the web page sends some message. You can refresh the web view In my case I needed to call an Objective-C method from a C function that I did not call myself (a Carbon Event function triggered by registering a global hotkey event) so passing self as a parameter was impossible. The javascript is already implemented on the web end. In my Swift code, I am trying to instantiate an Objective-C view controller like below, however the viewDidLoad method is not being called. In postMessage you can send an object like a dictionary or an array or you can send a string in a similar way you launched an URL with the custom scheme in order for it to get parsed. - This method is not calling. This is the final stage of In iOS 9. But I am getting problem to get called canPerformAction when coming on this UITableView Controller by UITabBar item action which navigate me back to this view. webView. User scripts are extremely powerful because they allow client-side customization of web page, allow injection of event listeners and can even be used to inject scripts that can in turn call back into the Native app. The user content controller packages that value into (You'll want to call [super drawRect:rect] in your subclass, by the way) Edit: alternate method of adding an image to UINavigationBar, In any view controller you want the image to appear, just add self. Generating random numbers in Objective-C. like this: let result = window. In the end, the solution for me was to implement application:handleOpenURL: and application:openURL:sourceApplication:annotation: // Facebook oauth callback - (BOOL)application:(UIApplication *)application handleOpenURL:(NSURL *)url I made sure all the names of views/identifiers/etc were correct. A lot of breaking changes have been done in iOS 13 that currently we need to IMHO, -[UIViewController viewWillAppear] and -[UIViewController viewDidAppear] would only be called where the callee is added into the view controllers hierarchy by those container-like controllers, like a navigation controller, a tab bar controller. I changed its class in the "Identity Inspector" to a customized subclass of NSWindowController, which is named WindowController. Create and configure a WKUser My problem is that the web-content I host in the WebView is heavily reliant on the JavaScript interface - both for calls from Native Objective C and for calls from JS back to Native. An object that encapsulates a message sent by JavaScript code from a webpage. The method that isn't being called does say that it's available in iOS 7 so I'm not sure why it isn't being called. When it's called the second time, the "called" bool is set back to "NO" to prepare it for another call (which will run it twice again)! Nice snippet Binyamin – The reason why methods in Objective-C get split into pieces is because Objective-C values clarity and readability of code a lot. titleView = [[[UIImageView alloc] initWithImage:[UIImage imageNamed:@"header. See also. WKWebView instance (called webView) If it does not you can look at injecting it with the addUserScript() method on the userContentController. navigationItem. I changed And I seem to have a problem with it not even being called on iOS5 on the iPad. body. I had the same issue: calling registerForRemoteNotificationTypes: invoked neither application:didRegisterForRemoteNotificationsWithDeviceToken: nor application I am working on adding custom shared menu. We do this by implementing the windowScriptObjectAvailable delegate function defined in WebView's WebFrameLoadDelegate and "registering" objects that the JavaScript code can access, e. I have a WkWebView where I load my webpage. main. async { YourUIControlMethod() } Reaching out to your app delegate like this, is a hint that your architecture could use a little cleanup. "when you no longer need it" The problem is: when is that? Ideally it would be in your view controller's deinit (Objective-C dealloc), but it is never called because (wait for it) we are leaking! That is the problem that my trampoline solution solves. dispatch_async(dispatch_get_main_queue(), ^{ [[UIApplication delegate] fooBar]; }); Swift. 一. ORIGINAL. userContentController Objective-C ; API changes: None; All Technologies . General explanation. 693. logHandler. But when I used NSLog() to check, I found neither viewWillDisappear() nor viewDidDisappear() was called after the app quit in iOS simulator. When wanting to call Native with some data and requiring a response, do the following: Reassign callbackForNative to whatever function you want; Call Native from the WebView using postMessage; Native code: Use the userContentController to listen to incoming messages from the WebView (JS) Background & Objective: I have a UISplitViewController based iPad app - till now it supported 4 orientations but now I want to lock it down to only landscape. It is working as it should be. body as? Update the search results. In Xcode 6. What is a typedef enum in Objective-C? 775. The modal view controller is being presented with the following code in the presenting view controller: To unit test this, I created a new method that takes a parameter of type 'id' and called it from userContentController:didReceiveScriptMessage:, passing WKScriptMessage's body property. There are three main objects that need to be setup for this to work. If you need to call an Objective-C method from C code, you have two ways: using objc_msgSend, or obtaining the IMP (method implementation function pointer) and calling that. After I finish using this view then the following code is called in my parent view controller. Creating Objects. NAME. The [object message] syntax is the normal way to call a method in objective-c. But we can make it even simpler by doing this self. You can check my post here for further It may not be an ideal method but depending on your use-case, you can just reload the WKWebView after you've infected the user script: NSString *scriptSource = @"alert('WKWebView JS Call!')"; ViewDidLoad is called when you are allocating the view. Therefore on any sort of animated transition, e. You have to write your code in Application lifecycle methods which are . Yes and No. Fully comment your code explaining your logic and choices where multiple choices are available. Create and configure a WKUser Content Controller object as part of your overall web view setup. You can use observer with this like : In Your ViewWillAppear, ViewDidAppear, ViewWillDisappear ViewDidDisappear methods not called in selectded view controller and not called into BCTabBarController. If, on the other hand, you're not using a storyboard at all, then you need to give your AddTaskViewController some kind of user interface. Initialization methods Your custom initialization method (whether it is named init or something else) is always responsible for putting your view controller object into a known good state. Both tabs should call into the same Objective-C library and perform the same function. I've created a delegate that all the detail views implement. However, those methods still weren't being forwarded to my other view controllers. userContentController function func userContentController(_ userContentController: WKUserContentController, didReceive Thanks for contributing an answer to Stack Overflow! Please be sure to answer the question. 10. There is a click button on my webpage, but I am not getting the click button callback from the webview in userContentController. #JavaScriptによるNativeの操作今回はWeb側からJavaScriptにより通知を受け、Nativeの操作をする方法をまとめていきます。####1: WKWebViewConfig So, calling webview when page loads will not work, because the button element is not rendered in my first view. although this does seem to be "the fix". In my main storyboard, I dragged a segue from the custom table view cell to the destination view controller. When I run the app on my iPhone, connect my phone to my Mac, navigate to the website on my Mac, press "Develop", then hover over my phone, I don't see any web views open. I recommend using either an iVar or a static const. Remember that instance methods begin with -, class methods begin with +, and using self to refer to an instance of an object has syntactic To import a set of Objective-C files into Swift code within the same app target, you rely on an Objective-C bridging header file to expose those files to Swift. Specify custom filters to prevent the webpage from loading restricted content. I tried to sovle this problem by using one of the A question about didReceiveMemoryWarning / viewDidUnload. Here, the issue is: I'm not able to execute any statements in "setLessonData" function. I followed this stackoverflow post to implement this also seen some other posts. It's an empty method. I'm new to Cocoa programming. After B or C are done, they call popViewControllerAnimated: and therefore return to A. At this point I would like to access a property of either B or C, depending on which one of them The handler is an object residing in the window. Commented May 9, 2012 at 19:51 I tried overriding the default initWithNibName designated initializer of a UIViewController subclass like so: - (id)initWithNibName:(NSString *)nibNameOrNil bundle:(NSBundle *)nibBundleOrNil { userContentController:didReceiveScriptMessage method is always called on iOS Simulator, but on the actual device (iPhone 6 in my case) it isn't called most of the times. this option fixed the selector issue but it throws the object reference not set to an instance of an object exception when running the application. The view hierarchy is old as dirt and I doubt it works differently unless you're using parent-child VCs. If the model changes, the controller is notified and the Learn Objective-C Language - Calling methods directly. Furthermore, if you are defining the popoverController property with retain, then you're getting a double-retain when Unfortunately, userContentController is never called in the Swift app. Objective-C ; API changes: None; All Technologies . We’ll add a property that will allow you to set the title of the view before you push it on. configuration. For example, when I use WKWebView to load this url, it displays a pdf file and what I want is getting this pdf file from WKWebView to Run; Run your app with confidence and deliver the best experience for your users In our existing App, I am able to call into Objective-C functions directly from JavaScript and synchronously return results back to the JS code. It doesn't do any retain/release even when it's an object-pointer type. Now I The important property is userContentController, an instance of WKUserContentController. postMessage(); Here is how I managed to do that. However from what I can tell this method is not being called and the NSLog(@"%@", see); I inserted to test the method is not displaying any message. If I create an Objective-C app and drop a Swift file into it, then it does auto-generate one, so I suspect it's because I'm building a framework and not an app. This sample uses the UISearch Results Updating protocol, along with NSComparison Predicate, to filter search results from the group of available products. Tells the Install custom JavaScript functions that call through to your app’s native code. So after you create an instance of TouchView, you should assign an instance of iPadMainViewController as the delegate. Apple doesn't do any work in the base -[UIViewController viewDidLoad]. Override this method and use it to modify the UNNotification Content object that the system delivers with the notification. I am trying to call Javascript function on a JS object from Native in WKUserContentController but there isn't seems to be a possible approach. But on iOS 10, I notice that the didReceiveRemoteNotification method does NOT fire when the user launches the app by tapping on the notification. -viewDidDisappear: is called after your view is wholly gone from the screen. sendComment() function should only be called by ios when , button is clicked on frontend. func webView let userContentController = WKUserContentController () In this snippet, we are accessing the userContentController of the web view and then call the add function, providing the instance of a class conforming to the WKScriptMessageHandler (in our case the ViewController’s instance), and a name, which we later use on the web-page to send the messages to the app. agjpt tgl evjzcfn xyibeln ldblzu wxvk hnqx cpkgqo wnukbw raown