Wkwebview zoom swift

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Wkwebview zoom swift

WKWebView is a powerhouse on iOS, providing high-performance web rendering wherever and whenever you need. So, if you want to solve a specific problem, or if you just want to see what WebKit is capable of, read on!

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RevenueCat makes it simple. With their open source SDKs, you can painlessly implement subscriptions for your app in hours, not months. Explore the docs to learn more. Sponsor Hacking with Swift and reach the world's largest Swift community! This is inefficient, and also far harder than it needs to be. Having a dedicated webView property is helpful so that you can reference its properties and methods more easily later on. If you intend to load URLs frequently, you might find it easier to wrap that behavior inside an extension:.

For example, if you wanted to load a file called "help. That url. For example, this displays a heading message:.

If you are referencing assets in your bundle such as images or CSS, you should specify Bundle.

wkwebview zoom swift

For example:. Second, make that object the navigation delegate of your web view. Finally, implement the decidePolicyFor method, adding any logic you want to decide whether the page should be loaded. As an example, this implementation allows the user to visit the Apple homepage and nothing else:. If you were using your view controller you would write this:.

Finally, implement the decidePolicyFor method with whatever logic should decide whether the page is loaded internally or externally. For internal loads make sure you call the decisionHandler closure with.

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This can be done by observing the estimatedProgress property, like this:. You should now implement the observeValue forKeyPath: method, which will pass you a string saying what changed.

iOS: Scaling web content in UIWebView

You can use webView. Now implement the observeValue forKeyPath: method. This is all available inside the backForwardList property of web views, which itself contains the array backList and forwardList.I've, also, tried look at the WKWebView's gesture recognizers but that seems to be turning up an empty array. I'm assuming the actual recognizers are bured deeper in the component's structure fairly complex, by the looks of it and would rather not go digging for them if at all possible.

Xamarin Form IOS WKWebView Pinch Zoom

Here's a slightly modified version of 's answer that worked for me in iOS In my example, I just inject the script directly into the web view. In my case, after several trial and error, the following works in my case [Tested on iOS If it is better to disbaled the Pinch zoom when the webpage finish loading, and it can also specify which particular URL is going to be disbaled.

If the webview is user for read-only purposes, i. In case you display a local html you could just modify this html and put this meta tag to your html:. So, I found injecting that tag into the DOM through javascript after a page load does the trick. I would be weary of this solution unless you know exactly what HTML is being loaded into the webview, otherwise I suspect it would have unintended consequences.

It might be wise to take a look at what kind of navigation has just been completed, since only a new page will need this javascript executed. The native solutions were not working for me, and injecting JS is not ideal. I noticed that when a zoom occurs and my delegate is called, the pinchGestureRecognizer is enabled even though I disabled it when initializing the webview.

To fix this, I set it to disabled whenever a zoom starts:. The default value is NO. Complete working code to disable zooming in WkWebView in Swift. The below answer no longer works in iOS 10 beta.

Swift 2.Posted by: admin December 24, Leave a comment. So, I found injecting that tag into the DOM through javascript after a page load does the trick. I would be weary of this solution unless you know exactly what HTML is being loaded into the webview, otherwise I suspect it would have unintended consequences.

It might be wise to take a look at what kind of navigation has just been completed, since only a new page will need this javascript executed.

In my case, after several trial and error, the following works in my case [Tested on iOS First assign delegate to your webview in viewDidLoad or any other suitable method as:. The application I work on needed the view to be zoomed by Javascript.

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The accepted answer blocked zooming by JavaScript from inside the page too. I only needed to disable pinch gesture by the user of the appliction. Tags: viewwebview. February 24, Ios Leave a comment. This leaves It would take 2 or more tries to make my taps register. So I decided to run my app in Simulato Add menu. The below answer no longer works in iOS 10 beta. Swift 2. Since the JS solution uses W3C standards, it should always be supported. Ah, Kevin, I wish that were how these things worked.

If the webview is user for read-only purposes, i. GetTokens: what is the purpose of the oldCookieToken parameter? Why is the top portion of my UISegmentedControl not tappable?Using web view is not new. We had UIWebView for many years. This is a complete guide in Swift! Currently as of Xcode 7. We add it to the view, flushing to the bounds, using auto layout visual language format. Because App Transport Security policy requires the use of a secure connection, or unless you whitelist it.

Add the following to your Info. WKUIDelegate provides the method for presenting some native user interfaces see Javascript dialog boxes later. WKNavigationDelegate track navigations from page to page.

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One of the most common header field is the User-Agent. You can set it on a request object. But a more convenient way is using webView. Or you can change it globally by setting NSUserDefaults. You can navigate the history with the web view goBack and goForward. To track the progress of loading a webpage, you will need to observe some key paths. Add this in viewDidLoad. This is often omitted in a custom implementation of WKWebViewyet it is very important.

Here, we have a simple implementation by using UIAlertController to show the dialog boxes. In the code above, I have left out the not-so-important part of creating UIAlertControlleradding the actions, and presenting it.

URL that will open an app. They are similar to custom URI scheme to open app, but using regular http addresses. Yet it was claimed to be untested software from Apple.

There is no way you can prevent a universal link from opening an app if installed when the link is in a page in your web view. Google Chrome app is the same.

Branch provided a good guide on when universal link will NOT open the app:. If a universal link sometimes did not work, then it is likely the OS has remembered your preference for the link. If you want to exclude a path, you can use a NOT keyword.By using our site, you acknowledge that you have read and understand our Cookie PolicyPrivacy Policyand our Terms of Service.

The dark mode beta is finally here. Change your preferences any time. Stack Overflow for Teams is a private, secure spot for you and your coworkers to find and share information. I am working on an iOS application that has a web view to load inside it.

I am using WKWebView but it is not zooming. Learn more.

Make your own iOS webview app in 5 minutes

Asked 1 year, 1 month ago. Active 5 months ago. Viewed times.

wkwebview zoom swift

I set minimum and maximum scale of webView's scrollView but still doesn't work. Amani Elsaed Amani Elsaed 8 8 silver badges 23 23 bronze badges. Active Oldest Votes. Adis 3, 2 2 gold badges 24 24 silver badges 33 33 bronze badges. Adel Inoubli Adel Inoubli 1 1 1 bronze badge. ScaleToFill webView. Sign up or log in Sign up using Google. Sign up using Facebook. Sign up using Email and Password. Post as a guest Name. Email Required, but never shown.

wkwebview zoom swift

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wkwebview zoom swift

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The Ultimate Guide to WKWebView

Dark Mode Beta - help us root out low-contrast and un-converted bits. Related Hot Network Questions.The question is how to scale the web content properly? Make the webView fill the entire window of the application and support scaling from on the web side, with something like the -webkit-transform: scale 1.

However, this complicates the web code and requires it to know and monitor the dimensions of the webView. So, skip it for now.

This method seemed to be working well, until someone has noticed that the graphics borders or something was not rendered properly on retina screens. Interfering lines would appear out of blue.

Thus, we had to try the next solution. Here I employed the transform property, that is available in any UIView object, to apply the correct affine scale matrix. The steps:.

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I suppose this happens because here the iOS takes the original rendered view and scales it as is, whereas in the previous solution UIWebView could look into the page markup and zoom different elements in various ways. Hello there! Method 1 CSS scaling Make the webView fill the entire window of the application and support scaling from on the web side, with something like the -webkit-transform: scale 1.

To use it: index. Please enable JavaScript to view the comments powered by Disqus.After all, websites were already 15 years old when iOS saw the light the first website ever created dates back to and iOS was presented in There was already so much web content when the iPhone came out, that iOS had to offer a way to show it.

In iOS 9, we have different options to render web content and depending on the specific needs, developers can evaluate the different options and choose the one that fits them better. It allows to parse and render html, load and display images, and execute JavaScript. It has been widely used, and for quite a long time, UIWebView was the only tool available to embed web content in an iOS app.

The new APIs brought exactly the same functionality to both platforms, streamlined communication between Apps and webpage and multi-process architecture also used in Safari. WKWebView provides many features that were previously only available to Safari.

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It provides a 60fps responsive scrolling using hardware acceleration and Core Animation, fast JavaScript, and built-in gestures like back-forward swipe and zoom gestures from Safari. One of the major improvements over UIWebView is the ease app-webpage communication, how interaction and data can be passed back and forth between an App and its web content. WKWebView is pretty easy to adopt. Here, the Swift lines of code that demonstrates that:.

Line 1 defines the frame of the webView instantiated in line 2. Line 4 creates and returns a URL request. In line 5, the web view loads the URL request. WKWebView is a view of web content that allows Javascript and html rendering.

You can add your own back button, forward button and progress indicator. You can delete data by type, like cookies and cache, or by date. You can change configuration to use a non-persistent data store. WKWebView offers a lot of features and you should go for this tool if you own the web content and need to customize it, like JavaScript evaluation against the page. Using Safari allows you to delegate the responsibility of rendering web content to Safari.

In this way, you also write less code than when using a WKWebView. A new iOS 9 feature allows the user to go back to your app through a back button that automatically appears in the top-left corner of the user interface see A in the image below.

Next picture highlight the UI components see B and C in the following picture you get for free. Here some sample code to show you how to launch Safari from your app delegating it the rendering of some web content:. This class has been introduced in iOS 9.


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