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🐛 [firebase_dynamic_link] New iOS install doesn't open with dynamic link after install
Bug report
Dynamic Link returns null On latest version of 4.0.2, for fresh app installs from a dynamic link in iOS via AppStore, the link isn't received in Flutter App. On clicking the link, the app store page opens as required, but after the user downloads the app, the dynamic link within the app seems to be null. Now if having the app already installed on the phone, on clicking the link, the app successfully gets the link. While this behavior is fine for users who already have the app, it totally ruins the experience for new users.
Additional context
Found a similar problem at issue #1861 but that seems to have been closed with the only solution being restart the phone and then install. Since the only way we are able to reproduce the bug is after deploying it to production on app store, it is quite difficult to debug and find the problem.
final _appLinks = AppLinks(
onAppLink: (Uri deepLink, String dataStr) async {
if (deepLink == null) return false;
pendingDynamicLinkData = await FirebaseDynamicLinks.instance.getDynamicLink(deepLink);
actualDeepLink = pendingDynamicLinkData.link ?? null;
if (actualDeepLink == null) return false;
.
.
.
.
return true;
},
);
As per #6913 I had to use AppLinks to get the link for iOS only.
@badrobot15
Does getInitialLink() get back with data or is null throughout the case ?
Also, is there a way for you to check if ibi parameter matches with your app's bundle Id ?
@darshankawar getInitialLink() comes null throughout the case even when app is intalled on phone hence the need to use app_links package. ibi parameter matches with apps's bundle id.
As per the flowchart here, getInitialLink() doesn't work for when the app is installed nor for when the user is sent to the app store to install the app. However, the dynamic link is copied to clipboard when user is redirected to app store.
After switching to app_links package we found that if the app is installed, the link is delivered successfully by the code snippet I posted above
Following is the initial code we tried
final PendingDynamicLinkData data = await FirebaseDynamicLinks.instance.getInitialLink();
final Uri deepLink = data?.link;
FirebaseDynamicLinks.instance.onLink.listen((event) {
pendingDynamicLinkData = event;
actualDeepLink = pendingDynamicLinkData.link ?? null;
if (actualDeepLink == null) return false;
...
...
return true;
},
onError: (error){
},
onDone: (){
},
);
Thanks for the update. Labeling it based on the report and the fact that this is replicable only after deploying prod app on appstore and then trying to install the app.
/cc @Salakar
flutter doctor -v
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I have tried implementing with the latest plugin firebase_dynamic_links: ^4.2.1 and both onLink.listen() getInitialLink() don't seem to work on iOS though Android works as expected without any issue.
Also tried implementing the workaround given in the related issue using app_links: ^3.1.0 but this too not working at all on iOS.
Here's the implementation of the code (I have separate functions for handling terminated and background/foreground redirects in our app
Future<void> handleTerminatedStateDynamicLinks(
BuildContext context, FirebaseDynamicLinks dynamicLinkInstance) async {
try {
final Uri? deepLink;
// Terminated app state
/*if (Platform.isIOS) {
AppLinks _appLinks = AppLinks();
deepLink = await _appLinks.getInitialAppLink();
debugPrint("Deeplink URL (iOS terminated): ${deepLink.toString()}");
} else {
final PendingDynamicLinkData? data =
await dynamicLinkInstance.getInitialLink();
deepLink = data?.link;
debugPrint("Deeplink URL (on terminated): ${deepLink.toString()}");
}*/
final PendingDynamicLinkData? data =
await dynamicLinkInstance.getInitialLink();
deepLink = data?.link;
debugPrint("Deeplink URL (on terminated): ${deepLink.toString()}");
if (deepLink != null) {
String? referCode = deepLink.queryParameters['invited_by'];
// Store refer code in hive because user can drop off in b/w signup
if (referCode != null) {
bool flag = await putPersistentData('refer_code', referCode);
if (flag) {
debugPrint("Saved Referral Code to Hive");
CleverTapPlugin.recordEvent('Referral App Open', {});
}
} else {
// store deeplink for redirect
await putPersistentData('deepLink', deepLink.toString());
}
}
return;
} catch (error) {
debugPrint("Dynamic link terminated state error: ${error.toString()}");
sendErrorLog("handleTerminatedStateDynamicLinks: ${error.toString()}");
}
}
Future<void> handleBackgroundForegroundStateDynamicLinks(
BuildContext context, FirebaseDynamicLinks dynamicLinkInstance) async {
/*if (Platform.isIOS) {
final AppLinks _appLinks = AppLinks();
// Foreground or background app state [iOS]
_appLinks.uriLinkStream.listen((uri) async {
debugPrint('iOS onAppLink: $uri');
PendingDynamicLinkData? deepLink =
await dynamicLinkInstance.getDynamicLink(uri);
handleDynamicLinksRedirects(context, deepLink?.link);
});
} else {*/
// Foreground or background app state [ANDROID]
dynamicLinkInstance.onLink.listen((dynamicLinkData) async {
final Uri deepLink = dynamicLinkData.link;
debugPrint(
"Deeplink URL (on foreground/background): ${deepLink.toString()}");
handleDynamicLinksRedirects(context, deepLink);
return;
}).onError((error) {
// Handle errors
debugPrint(
"Dynamic Link error at foreground/background Listener: ${error.toString()}");
sendErrorLog(
"handleBackgroundForegroundStateDynamicLinks: ${error.toString()}");
});
//}
return;
}
@darshankawar As discussed in https://github.com/firebase/flutterfire/issues/9103#issuecomment-1191251679 I'm posting my question here.
This is the exact issue I am facing. I have already tried the workaround using the app_links plugin but it didn't solve the issue. Though I have only tested through TestFlight using the iosFallbackLink (pointing to the TestFlight app). Can you confirm testing dynamic links through TestFlight using the iosFallbackLink parameter should work?
@darshankawar A response would be much appreciated. I have not heard back from you since you closed my original issue.
@wederchr Sorry for not coming back to this earlier. Please take a look at below links and see if they help:
https://github.com/firebase/flutterfire/issues/8926 https://github.com/firebase/flutterfire/issues/8926#issuecomment-1196653932 https://github.com/firebase/flutterfire/issues/9110#issuecomment-1198263612 https://github.com/firebase/flutterfire/issues/9110#issuecomment-1201156205
@wederchr Sorry for not coming back to this earlier. Please take a look at below links and see if they help:
Thank you for your response, I'll take a look! Did you also have time to clarify my question regarding firebase dynamic link testing using TestFlight?
flutter doctor -v[✓] Flutter (Channel stable, 2.10.4, on macOS 12.3.1 21E258 darwin-arm, locale en-IN) • Flutter version 2.10.4 at /Users/snghnishant/Developer/flutter • Upstream repository https://github.com/flutter/flutter.git • Framework revision c860cba910 (5 weeks ago), 2022-03-25 00:23:12 -0500 • Engine revision 57d3bac3dd • Dart version 2.16.2 • DevTools version 2.9.2 [✓] Android toolchain - develop for Android devices (Android SDK version 31.0.0) • Android SDK at /Users/snghnishant/Library/Android/sdk • Platform android-31, build-tools 31.0.0 • Java binary at: /Applications/Android Studio.app/Contents/jre/Contents/Home/bin/java • Java version OpenJDK Runtime Environment (build 11.0.11+0-b60-7772763) • All Android licenses accepted. [✓] Xcode - develop for iOS and macOS (Xcode 13.3.1) • Xcode at /Applications/Xcode.app/Contents/Developer • CocoaPods version 1.11.3 [✓] Chrome - develop for the web • Chrome at /Applications/Google Chrome.app/Contents/MacOS/Google Chrome [✓] Android Studio (version 2021.1) • Android Studio at /Applications/Android Studio.app/Contents • Flutter plugin can be installed from: 🔨 https://plugins.jetbrains.com/plugin/9212-flutter • Dart plugin can be installed from: 🔨 https://plugins.jetbrains.com/plugin/6351-dart • Java version OpenJDK Runtime Environment (build 11.0.11+0-b60-7772763) [✓] VS Code (version 1.66.2) • VS Code at /Applications/Visual Studio Code.app/Contents • Flutter extension can be installed from: 🔨 https://marketplace.visualstudio.com/items?itemName=Dart-Code.flutter [✓] Connected device (1 available) • Chrome (web) • chrome • web-javascript • Google Chrome 100.0.4896.127 [✓] HTTP Host Availability • All required HTTP hosts are available • No issues found!I have tried implementing with the latest plugin
firebase_dynamic_links: ^4.2.1and bothonLink.listen()getInitialLink()don't seem to work on iOS though Android works as expected without any issue.Also tried implementing the workaround given in the related issue using
app_links: ^3.1.0but this too not working at all on iOS.Here's the implementation of the code (I have separate functions for handling terminated and background/foreground redirects in our app
Future<void> handleTerminatedStateDynamicLinks( BuildContext context, FirebaseDynamicLinks dynamicLinkInstance) async { try { final Uri? deepLink; // Terminated app state /*if (Platform.isIOS) { AppLinks _appLinks = AppLinks(); deepLink = await _appLinks.getInitialAppLink(); debugPrint("Deeplink URL (iOS terminated): ${deepLink.toString()}"); } else { final PendingDynamicLinkData? data = await dynamicLinkInstance.getInitialLink(); deepLink = data?.link; debugPrint("Deeplink URL (on terminated): ${deepLink.toString()}"); }*/ final PendingDynamicLinkData? data = await dynamicLinkInstance.getInitialLink(); deepLink = data?.link; debugPrint("Deeplink URL (on terminated): ${deepLink.toString()}"); if (deepLink != null) { String? referCode = deepLink.queryParameters['invited_by']; // Store refer code in hive because user can drop off in b/w signup if (referCode != null) { bool flag = await putPersistentData('refer_code', referCode); if (flag) { debugPrint("Saved Referral Code to Hive"); CleverTapPlugin.recordEvent('Referral App Open', {}); } } else { // store deeplink for redirect await putPersistentData('deepLink', deepLink.toString()); } } return; } catch (error) { debugPrint("Dynamic link terminated state error: ${error.toString()}"); sendErrorLog("handleTerminatedStateDynamicLinks: ${error.toString()}"); } } Future<void> handleBackgroundForegroundStateDynamicLinks( BuildContext context, FirebaseDynamicLinks dynamicLinkInstance) async { /*if (Platform.isIOS) { final AppLinks _appLinks = AppLinks(); // Foreground or background app state [iOS] _appLinks.uriLinkStream.listen((uri) async { debugPrint('iOS onAppLink: $uri'); PendingDynamicLinkData? deepLink = await dynamicLinkInstance.getDynamicLink(uri); handleDynamicLinksRedirects(context, deepLink?.link); }); } else {*/ // Foreground or background app state [ANDROID] dynamicLinkInstance.onLink.listen((dynamicLinkData) async { final Uri deepLink = dynamicLinkData.link; debugPrint( "Deeplink URL (on foreground/background): ${deepLink.toString()}"); handleDynamicLinksRedirects(context, deepLink); return; }).onError((error) { // Handle errors debugPrint( "Dynamic Link error at foreground/background Listener: ${error.toString()}"); sendErrorLog( "handleBackgroundForegroundStateDynamicLinks: ${error.toString()}"); }); //} return; }
The flutter firebase dynamic links plugin seems to work now without any other package. There was an issue with some native code being override for supporting an attribution SDK in my case. Removing that helped making firebase dynamic link plugin work on both iOS and android in all 3 app state.
I've released our app with dynamic links implemented for the first time and unfortunately, it doesn't work after installation for us either :( It works great for Android or when the iOS app is already installed... That is very disappointing because deep links will be mainly used for that particular case when the app is freshly installed... Any idea when this bug could be fixed? @russellwheatley
The same for me, dynamic link is not working when the app is not installed and user is redirected to the App Store. Then, when navigating to the newly installed app, dynamic link is not received.
In the most recent release, I've added the app_links package (someone suggested it as a workaround). I've also added remote logging so that when the app is launched it sends me an initial link captured by both Firebase and App_Links. I thought that the worst-case scenario is that app_links catches a universal link and it can't be parsed into a Dynamic link with the getDynamicLink(...). To my surprise, both are null instead... I'm puzzled because it either means that universal links, in general, are not received after installation or that for that particular scenario there is some other way of capturing the dynamic link. I know there is a certain flag ininfo.plistdisabling clipboard. I've disabled it... Anyways, for my next release, I will try a pure universal link with a subdomain not redirected to Firebase. @russellwheatley @darshankawar Could you please look into it? Is there a way of testing it with TestFlight or it always has to be released to the app store? It is so frustrating :(
Hey @badrobot15. We need more information to resolve this issue but there hasn't been an update in 7 weekdays. I'm marking the issue as stale and if there are no new updates in the next 7 days I will close it automatically.
If you have more information that will help us get to the bottom of this, just add a comment!
I was able to make it work on iOS by adding app_links package and moving the check for initial link further in the application's lifecycle. At first, I was checking initial link after Firebase initialization but now it is moved after user's signup (I'am using is for detecting referral) and it works.
@russellwheatley @darshankawar This issue is far from resolved. If the @badrobot15 is not responding anymore I'd like to ask you to reopen the issue I've reported https://github.com/firebase/flutterfire/issues/9103 which was closed in favor of this one.
@lnevaril I have a similar setup to yours. app_links and checking it later but it doesn't work for me... :( I wonder what is the difference... @wederchr I think we should open a new one. Seems like since they marked it as blocked by customer-response it no longer gets any attention...
This issue is still open, so no need to open a new issue.
/cc @russellwheatley for further insights on this.
I've integrated https://branch.io and their solution works after installation
Hey @badrobot15. We need more information to resolve this issue but there hasn't been an update in 7 weekdays. I'm marking the issue as stale and if there are no new updates in the next 7 days I will close it automatically.
If you have more information that will help us get to the bottom of this, just add a comment!
Since there haven't been any recent updates here, I am going to close this issue.
@badrobot15 if you're still experiencing this problem and want to continue the discussion just leave a comment here and we are happy to re-open this.
Since there haven't been any recent updates here, I am going to close this issue.
@badrobot15 if you're still experiencing this problem and want to continue the discussion just leave a comment here and we are happy to re-open this.
Im also having an issue here, for android works perfectly but ios has a lot of issues
Having the same issue. getInitialLink() always null and onLink method seems not called on ios. I also tried app_link package and it always return null.
It looks like @darshankawar and @russellwheatley don't care anymore because they keep promising to look into it and then nothing happens for weeks and bots try to either tag it or close it. It is a pity because even though branch.io offers a working alternative I'd prefer to use Firebase because my app has been already having too many dependencies...
Did you also have time to clarify my question regarding firebase dynamic link testing using TestFlight?
I think using ifl parameter as you had already mentioned and verified, can be used which will install the app from testlfight instead of app store.
It looks like @darshankawar and @russellwheatley don't care anymore because they keep promising to look into it and then nothing happens for weeks and bots try to either tag it or close it.
This isn't true. We care for each and every issue that is filed. The team comes back to issues when they have completed the task at their hand. I will also forward this issue for team's attention.