I have universal links configured for my iOS app which work as expected when the app is installed. When the app is not installed the universal link will go to the browser as expected.
What I want to do is redirect to the app store, allow the user to install the app, then redirect them to the initial universal link. Redirecting them to the app store isn't the hard part I can achieve that from the webpage, however I don't know how to save a reference to that initial link to redirect them once they instal the app.
What I want the flow to be for a user who doesn't have the app is:
visit a universal link (example.com/UUID)
redirect to the app store and install the app
open the app and redirect to example.com/UUID
I've seen some ways people are doing this with the clipboard but I don't love that solution, I also don't want to use a 3rd party service if I can avoid it - how are the 3rd party services making this happen?
Universal Links
RSS for tagAllow your users to intelligently follow links to content in your app or to your website using universal links.
Posts under Universal Links tag
86 Posts
Sort by:
Post
Replies
Boosts
Views
Activity
Hi, I have a work task that I need to do that I struggle with...
We would like to sent an email to our clients where in that email there will be a link that will redirect to App Store to our app to be downloaded.
After the app is downloaded when the user opens the app he will automatically have a promocode pasted in our registration flow promocode text field.
Has anyone had similar task ? Is it even possible ? I did some research on this but I didn't find anyone in situation that I have now...
I now that deeplinks are widely used to parse data like this, but I'm not sure if this works even when the app is not downloaded yet. Maybe that the solution will be having a two links, but that would not be very user friendly...
Do you have any advice how to do something like this or some alternatives please ?
Thank you soo much for you time and respond.
We encountered an issue with universal links where the link failed to open the iOS application from Safari when triggered by an javascript outside a click event.
However, when we modified the code to open the link directly via a user click, the application launched as expected. Based on our testing, this issue seems to occur only when there is information for the application cached in Safari (i.e. IDP page cached, redirects to our app, javascript based universal link navigation fails).
Here is a code example of what caused the universal link failure:
const openUniversalLink = () => {
buttonClicked = True
}
useEffect(()=> {
if (buttonClicked) {
window.location.href = universal_link
}
}
<Button
onClick={openUniversalLink}
/>
Here is a code example of what caused our universal links to open successfully:
const openUniversalLink = () => {
window.location.href = universal_link
}
<Button
onClick={openUniversalLink}
/>
Are there defined practices of when we are able to open universal links triggered by javascript vs when they must be opened directly through user action?
Hi everyone! We encountered an issue with universal links where the link failed to open the iOS application from Safari when triggered by an event listener. However, when we modified the code to open the link directly via a user click, the application launched as expected. Based on our testing, this issue seems to occur only when there is information for the application cached in Safari.
Our previous flow that resulted in the broken universal link included:
Data is loaded and a screen with a button to open the universal link is available for the user
When the data is loaded it sets a state variable to true for DataLoaded
The user clicks on the button to open the universal link
When the user clicks the button to open the link it sets a variable to true for ButtonClicked
When DataLoaded and ButtonClicked are true then the universal link is opened
Our new flow that results in the successful universal link includes:
Data is loaded and the user is hit with a loading screen until it is finished
The user clicks on the button to open the universal link and the universal link is opened directly
Does anyone have insights into why universal links must be triggered by direct user action, and in what scenarios this behavior is enforced?
I’m trying to fix an issue with a pipeline that automatically distributes an app to the App Store (TestFlight). Unfortunately, universal links don’t work because the .entitlements file in the build doesn’t include the specified associated domains, even though they are defined. I’ve double-checked the certificates, provisioning profiles, and Xcode settings — everything seems correct. Therefore, I assume the issue lies in the build commands, which are as follows:
Create Archive
xcodebuild -workspace ios/ClientDomain.xcworkspace -scheme ClientDomain archive -sdk iphoneos -configuration ClientDomain -archivePath ios/ClientDomain.xcarchive CODE_SIGN_STYLE=Manual CODE_SIGN_IDENTITY="Apple Distribution: Company Name (XXXXXXXXXX)" PROVISIONING_PROFILE=xxxxx-xxxxx-xxxxx-xxxxx-xxxxx CODE_SIGNING_ALLOWED=No
Export Archive
xcodebuild -exportArchive -archivePath ios/ClientDomain.xcarchive -exportPath ios -exportOptionsPlist ios/exportOptions.plist
I also want to provide files I use, in order to make sure I don't have any mistakes:
ClientDomain.entitlements
<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE plist PUBLIC "-//Apple//DTD PLIST 1.0//EN" "http://www.apple.com/DTDs/PropertyList-1.0.dtd">
<plist version="1.0">
<dict>
<key>com.apple.developer.associated-domains</key>
<array>
<string>applinks:www.site.com</string>
<string>webcredentials:www.site.com</string>
</array>
</dict>
</plist>
exportOptions.plist
<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE plist PUBLIC "-//Apple//DTD PLIST 1.0//EN" "http://www.apple.com/DTDs/PropertyList-1.0.dtd">
<plist version="1.0">
<dict>
<key>destination</key>
<string>export</string>
<key>generateAppStoreInformation</key>
<false/>
<key>manageAppVersionAndBuildNumber</key>
<true/>
<key>method</key>
<string>app-store-connect</string>
<key>provisioningProfiles</key>
<dict>
<key>com.bundle.app</key>
<string>xxxxx-xxxxx-xxxxx-xxxxx-xxxxx</string>
</dict>
<key>signingCertificate</key>
<string>Apple Distribution: Company Name (XXXXXXXXXX)</string>
<key>signingStyle</key>
<string>manual</string>
<key>stripSwiftSymbols</key>
<true/>
<key>teamID</key>
<string>XXXXXXXXXX</string>
<key>testFlightInternalTestingOnly</key>
<false/>
<key>uploadSymbols</key>
<true/>
</dict>
</plist>
I'm curious, how people usually distribute their apps to App Store. What if I do something wrong?
Hi developers,
I have a question if it is possible to open in my application not main window but a specific ViewController, when application is installed but not running.
When the application is running in background and I scan QR code, then specific ViewController is opened over SceneDelegate and method 'userActivity'. But this does not work when the application is only installed, but not running.
The Appstore link is here: https://apps.apple.com/us/app/don%C3%A1tor/id6473955033
Description
When you try to open an iOS app using Universal links from another app while the opening app is being updating, Safari will open an error screen(app will not launch).
Is this a specification of universal links on iOS?
Also is it possible for the Main app to detect that the application trying to open Universal Link is being updating?
Devices
iPad 9thGen/10thGen
I am trying to get universal links to work in our app Firefox iOS
The Problem:
I am not able to get universal links to work for our release app or beta app scheme locally or with a TestFlight build.
I am able to get it working on our development scheme with a locally hosted app site association file. I also was able to get it working using our development scheme but setting the bundle id to the release app bundle id. I also built a demo app with the release app id and the release app development certificate. It succeeded there as well.
Implementation Steps:
Added associated domains entitlement to the production and beta schemes for our main app target (No associated domains entitlements or capabilities added for any extensions)
Confirmed that the bundle ids associated with these schemes have the associated domains capability
Added applinks:blog.mozilla.org to associated domains list
Confirmed in code that user activities are being handled via SceneDelegate.swift
Steps to Debug:
I have gone through and validated every step in the provided Universal Link Debugging. All were successful:
Associated Domains Development -> Diagnostics: Opens Installed App
Validate AASA host and applinks match
curl -v https://blog.mozilla.org/.well-known/apple-app-site-association returns the expected json file
swcutil dl correctly downloads the AASA blob
swcutil verify succeeds
I have inspected the IPA of our beta build and confirmed the App ID and the associated domains is an entitlement.
I have looked at the console logs filtering by swcd. I am not seeing any errors and I see the download for the AASA file kick off:
Beginning data task AASA-4BABF039-3C69-4E36-AA4E-ECCDF3D14878 { domain: bl….mo….org, bytes: 0, route: cdn }
There is only one error that appears in the console but our app is not enterprise-managed so I assume this is normal.
Error getting enterprise-managed associated domains data. If this device is not enterprise-managed, this is normal: Error Domain=SWCErrorDomain Code=1701 "Failed to get associated domain data from ManagedConfiguration framework." UserInfo={NSDebugDescription=Failed to get associated domain data from ManagedConfiguration framework., Line=298, Function=<private>}
I have run Sysdiagnos and identified for our App ID:
Site/Fmwk Approval: approved
I am at a loss as to what is preventing universal links from working even though all validation steps pass.
We updated the apple-app-site-association file two weeks ago and we are only seeing the new content from Apple's CDN serving certain regions such as Texas and Canada. Regions such as Colorado intermittently sees the old content and California has been receiving the old content all the time.
Is this a known issue? If yes, when can we expect this to be fixed and where to check the status? If not, can someone in charge of CDN please look into this? Let me know if there is a better place to report this issue and get the support ASAP though.
Thank you in advance and happy new year!
On iOS 18 only, I've been getting this error from the didFailToContinueUserActivityWithType in AppDelegate, the activity needed for universal links. It didn't happen on previous versions of it.
Has anyone encountered this ?
**Description: **
We have implemented a process to launch a native app from a browser (Safari) via universal links. However, under certain conditions, the app does not launch seamlessly, and an error page is displayed in the browser. In such cases, a button to open the app appears at the top of the error page, and pressing this button successfully opens the app.
The error page is a blank white page with only the following error message displayed: "NoSuchKeyThe specified key does not exist."
We want to confirm the detailed specifications and conditions of the behavior where seamless transition via universal links fails.
If there are means to suppress or control the occurrence of this issue, please let us know.
Configuration:
OS: iOS 18.1
Device: iPad 9th generation, 10th generation
**Reproduction Steps: **
When attempting to launch the app via a universal link, a pop-up appears asking "Do you want to allow this page to open ?"
If 'Cancel' is pressed in this pop-up, the issue occurs the next time the app is launched via a universal link.
However, we have also confirmed that this issue can occur due to operations other than this one, and we have not been able to pinpoint the conditions under which it occurs. Therefore, we would like to confirm the detailed specifications and conditions leading to the occurrence of this issue.
Hi Apple developers, I am very new to XCode and Swift, I am planning to build an app for iOS from a web. I tried to use WKWebView to handle the web , I managed to redirect some of the links to Safari, however some button/links didn't trigger .linkActivated function and encounter the error as "Your browser preventing this app to open “URL”.
If I copy the URL to Safari is able to open, I trying to research on web but can't find any related solution for my case.
Here is the code in my app:
import UIKit
import WebKit
import SafariServices
class ViewController: UIViewController, WKNavigationDelegate {
var webView: WKWebView!
override func viewDidLoad() {
super.viewDidLoad()
// Initialize WKWebView
let webConfiguration = WKWebViewConfiguration()
//enable javascript
webConfiguration.preferences.javaScriptEnabled = true
webView = WKWebView(frame: self.view.frame, configuration: webConfiguration)
webView.navigationDelegate = self
self.view.addSubview(webView)
// Load a web page as webview
if let url = URL(string: "https://myurl") {
let request = URLRequest(url: url)
webView.load(request)
}
//console log
webView.evaluateJavaScript("console.log('Button clicked!')") { result, error in
if let error = error {
print("Error executing JavaScript: \(error.localizedDescription)")
} else {
print("JavaScript result: \(String(describing: result))")
}
}
}
func webView(_ webView: WKWebView, decidePolicyFor navigationAction: WKNavigationAction, decisionHandler: @escaping (WKNavigationActionPolicy) -> Void) {
if let url = navigationAction.request.url, navigationAction.navigationType == .linkActivated {
// Check if URL is external and open it in Safari
if UIApplication.shared.canOpenURL(url) {
UIApplication.shared.open(url, options: [:], completionHandler: nil)
decisionHandler(.cancel) // Prevent loading the link in the WebView
} else {
decisionHandler(.allow) // Allow loading if URL cannot be opened in Safari
}
} else {
decisionHandler(.allow) // Allow the WebView to load the URL normally
}
}
}
In our iOS app we have added example.com in associated domains from the very beginning With no AASA file hosted at example.com domain
Now we need a subdomain app.example.com to be intercepted in our app, so for the same, we are thinking to host AASA at app.example.com and add app.example.com in associated domains too.
so my question is will hosting AASA at sub domain works? If yes, will it affect older apps where app.example.com is not handled.
In short we only want the links with app.example.com to be open in our app not the example.com links
I'm working on setting app-site-association for my site. I've added the app-site-association file to public/.well-known/app-site-association and confirmed that my file made it to apple CDN. I've also checked it on branch.io. The problem is, when I head to my site I get a 404. I checked sysdiagnose logs and can see the same
Error Domain=SWCErrorDomain Code=7 "SWCERR00101 Bad HTTP Response: 404 Not Found -- {"status":"404 Not Found"}" UserInfo={Line=275, Function=-[SWCDownloader. URLSession:dataTask:didReceiveResponse:completionHandler:], NSDebugDescription=SWCERR00101 Bad HTTP Response: 404 Not Found -- {"status":"404 Not Found"}, UnderlyingError=Error Domain=HTTP Code=404 "(null)" UserInfo={Line=275, Function=-[SWCDownloader URLSession:dataTask:didReceiveResponse:completionHandler:]}}
I'm not really sure where to go from here.
Hello, if an associated domain is specified for an app (for example, the url of a server services an app extension text spam filtering) then what is there in place to stop somebody with malicious intentions from obtaining that url from the .plist/.entitlements file of the app and doing something with that url, such as denial of service attack or whatever?
Hello, I'm currently configuring Universal Links and I'm getting error SWCERR00201 from Apple CDN.
$ curl -I -v https://app-site-association.cdn-apple.com/a/v1/pamestoixima.gr
...
< Apple-Failure-Details: {"location":"http://www.pamestoixima.gr/.well-known/apple-app-site-association/"}
Apple-Failure-Details: {"location":"http://www.pamestoixima.gr/.well-known/apple-app-site-association/"}
< Apple-Failure-Reason: SWCERR00201 Insecure (non-https) redirects forbidden
Apple-Failure-Reason: SWCERR00201 Insecure (non-https) redirects forbidden
< Apple-From: https://pamestoixima.gr/.well-known/apple-app-site-association
Apple-From: https://pamestoixima.gr/.well-known/apple-app-site-association
...
I cannot understand why it is mentioning http as the AASA is hosted at pamestoixima.gr that uses https, not http. I can get it via accessing https://www.pamestoixima.gr/.well-known/apple-app-site-association/.
I would greatly appreciate any help on this.
Thank you
Hello,
We're facing an issue with app links failing and falling back to browser website journeys. Our apple-app-site-association file is hosted publicly and the app to app journeys have been working correctly up to very recently - we are trying to identify any potential network infra changes that could have impacted the Apple CDN being able to retrieve the apple-app-site-association file.
We can see in the iPhone OS logs that the links cannot be verified by the swcd process, and using the app-site-association.cdn-apple.com/a/v1 api via curl can also see the CDN has no record of the AASA file.
Due to the traffic being SSL and to a high volume enterprise site it is difficult for use to trace activity through anything other that the source IPs - we cannot filter on user-agent for "AASA-Bot/1.0.0" as breaking the SSL would be impactful due to the load. Is it possible to get a network range used by the Apple CDN to retrieve the AASA file as this would help us identify potential blocking behaviour?
Thank you.
Hi!
Instead of using username/password authentication, I wanted to use a magic link to authenticate users of my app to simplify the process.
However, on the app review, it got rejected because of the magic link:
Guideline 2.1 - Performance - App Completeness
Issue Description
The app exhibited one or more bugs that would negatively impact App Store users.
Bug description: The Magic Link failed to open the installed app.
Review device details:
- Device type: iPad Air (5th generation)
- OS version: iPadOS 18.1
Next Steps
Test the app on supported devices to identify and resolve bugs and stability issues before submitting for review.
If the bug cannot be reproduced, try the following:
- For new apps, uninstall all previous versions of the app from a device, then install and follow the steps to reproduce.
- For app updates, install the new version as an update to the previous version, then follow the steps to reproduce.
Resources
- For information about testing apps and preparing them for review, see Testing a Release Build.
- To learn about troubleshooting networking issues, see Networking Overview.
I had no luck to reproduce this.
The magic links trigger my application on all my testing devices.
I also had external testers using TestFlight and it works for all of them as well.
The only time where I can see it failing is if I archive the IPA and install it on an external service like AWS Device Farm or BrowserStack App Live. But here it is very hard to debug because I think I cannot get the sysdiagnose file and I don't know if it is even supposed to work in this case because those devices are not associated with my developer account.
I read countless links, tutorials and discussions on this topic but it did not really help.
https://developer.apple.com/documentation/technotes/tn3155-debugging-universal-links
https://developer.apple.com/documentation/xcode/allowing-apps-and-websites-to-link-to-your-content
Here is my set-up:
I added the Associated Domains capability to my app.
There under Domains I put applinks:subdomain.domain.com
Under https://subdomain.domain.com/apple-app-site-association and https://subdomain.domain.com/.well-known/apple-app-site-association I host this file with JSON content header:
{
"applinks": {
"apps": [],
"details": [
{
"appID": "<TEAM>.<TestAppIdentifier>",
"paths": [
"/magiclink/*",
"/activate/*"
]
},
{
"appID": "<TEAM>.<Identifier>",
"paths": [
"/magiclink/*",
"/activate/*"
]
}
]
}
}
My main entry point of the app has a
.onOpenURL { url in
handleOpenURL(url)
}
on the ContentView()
If I go to https://app-site-association.cdn-apple.com/a/v1/subdomain.domain.com, I see the file correctly as I specified it above.
If I go on my development phone to Settings > Developers > Universal Links > Diagnostics and I enter one of the "magic links" into the field, it says with a checkmark Opens Installed Application.
https://getuniversal.link/ says my AASA file is valid.
Any suggestion on what I could do to further debug or resolve this is highly appreciated.
I am working on an app on which I want to develop a feature to install eSIMs. I am trying to follow the approach of installing the eSIM with the Universal Link solution by appending the activation code to the link https://esimsetup.apple.com/eSIM_QRCode_Provisioning?carddata=.
I was able to successfully call the link and install the eSIM. But after installation, the user stays on the settings app.
Is it possible to bring my app back to foreground after installation? Furthermore, is there a way I can listen to the installation result from my app?
I need my app to open all other links except domain.com. But clicking on domain.com still opens the app though I have added 'excluded': true.
Below is my aasa file
{
"applinks": {
"apps": [],
"details": [
{
"appID": "com.domain",
"paths": ["NOT /"],
"components": [
{
"/": "/",
"exclude": true
},
{
"/": "/biz/*"
},
{
"/": "/offers/deal-detail*",
"?": { "oId": "*" }
},
{
"/": "/review/*"
},
{
"/": "/emailActionHandler*"
}
]
}
]
}
}
I have also tried to verify this with swcutil tool, and it gives the right matches and blocks 'domain.com'. But the actual behavior on an iOS device is not the same.