Add parameter to Firebase Dynamic Links

Question

I want to let the user share a product from my app by clicking a button and sending other potential users links like

www.myapp.com/offer/123

there, "123" must be generated at the moment the user click the button in order to, later in time, hanle it with

FirebaseDynamicLinks.getInstance()
            .getDynamicLink(getIntent())
            .addOnSuccessListener(this, new OnSuccessListener<PendingDynamicLinkData>() {
                @Override
                public void onSuccess(PendingDynamicLinkData pendingDynamicLinkData) {
                    Uri deepLink;
                    if (pendingDynamicLinkData != null) {
                        deepLink = pendingDynamicLinkData.getLink();

but unfortunetly I am unable to pass a parameter.

String link = "http://www.myapp.com/offer/123";
        Task<ShortDynamicLink> shortLinkTask = FirebaseDynamicLinks.getInstance().createDynamicLink()
                .setLink(Uri.parse(link))
                .setDynamicLinkDomain("fgd3e.app.goo.gl")
                .buildShortDynamicLink()
                .addOnCompleteListener(this, new OnCompleteListener<ShortDynamicLink>() {
                    @Override
                    public void onComplete(@NonNull Task<ShortDynamicLink> task) {
                        if (task.isSuccessful()) {
                            // Short link created
                            Uri shortLink = task.getResult().getShortLink();
                            Uri flowchartLink = task.getResult().getPreviewLink();

Can someone teach me how to create a dynamic link at runtime with custom parameters in order to re direct the target user to specific product detail?

Answer 1

SHORT ANSWER: Using query parameters instead of path variables you could use the getQueryParameter method from the Uri object returned by pendingDynamicLinkData.getLink()

---

What i've been doing is using query parameters instead of path variables.

Instead of sending http://www.myapp.com/offer/123, i'm sending something like http://www.myapp.com/?offer=123

To add parameters dynamically i'm just concatenating strings: "http://www.myapp.com/?offer=" + myValue

This URL is in turn a query parameter of the dynamic link created in firebase:

String url = "https://YourDynamicLinkIdentifier.app.goo.gl/?link=https://myapp.com?offer=" 
+ myOfferVar 
+ "&apn=com.your.apn"; // << Dont forget to change this too

And this resulting URL is the one i send to the url shortener.

Then in the callback onSuccess(PendingDynamicLinkData pendingDynamicLinkData) call getLink() of pendingDynamicLinkData as you're already doing.

Now that you have a Uri object, you can easily get the parameter by calling the method getQueryParameter("offer").

if (pendingDynamicLinkData != null) {
     deepLink = pendingDynamicLinkData.getLink();
     String offerKey = deepLink.getQueryParameter("offer");

NOTE: In case you still prefer to use the path variable, you could get the last segment of the Uri path. See How to obtain the last path segment of an uri