Create Dynamic Links on Android

You can create short or long Dynamic Links with the Firebase Dynamic Links Builder API. This API accepts either a long Dynamic Link or an object containing Dynamic Link parameters, and returns URLs like the following examples:

https://example.com/link/WXYZ
https://example.page.link/WXYZ

Set up Firebase and the Dynamic Links SDK

Before you can create Dynamic Links in your Android app, you must include the Firebase SDK. If your app is set up to receive Dynamic Links, you have already completed these steps and you can skip this section.

1. If you haven't already, add Firebase to your Android project.

   When you register your app, specify your SHA-1 signing key. If you use App Links, also specify your SHA-256 key.

2. In your module (app-level) Gradle file (usually <project>/<app-module>/build.gradle.kts or <project>/<app-module>/build.gradle), add the dependency for the Dynamic Links library for Android. We recommend using the Firebase Android BoM to control library versioning.

   For an optimal experience with Dynamic Links, we recommend enabling Google Analytics in your Firebase project and adding the Firebase SDK for Google Analytics to your app.

   dependencies {
       // Import the BoM for the Firebase platform
       implementation(platform("com.google.firebase:firebase-bom:33.5.1"))
   
       // Add the dependencies for the Dynamic Links and Analytics libraries
       // When using the BoM, you don't specify versions in Firebase library dependencies
       implementation 'com.google.firebase:firebase-dynamic-links'
       implementation 'com.google.firebase:firebase-analytics'
   }
   

   By using the Firebase Android BoM, your app will always use compatible versions of Firebase Android libraries.

   (Alternative)  Add Firebase library dependencies without using the BoM

   If you choose not to use the Firebase BoM, you must specify each Firebase library version in its dependency line.

   Note that if you use multiple Firebase libraries in your app, we strongly recommend using the BoM to manage library versions, which ensures that all versions are compatible.

   dependencies {
       // Add the dependencies for the Dynamic Links and Analytics libraries
       // When NOT using the BoM, you must specify versions in Firebase library dependencies
       implementation 'com.google.firebase:firebase-dynamic-links:22.1.0'
       implementation 'com.google.firebase:firebase-analytics:22.1.2'
   }
   

   Looking for a Kotlin-specific library module? Starting in October 2023 (Firebase BoM 32.5.0), both Kotlin and Java developers can depend on the main library module (for details, see the FAQ about this initiative).
3. In the Firebase console, open the Dynamic Links section.

4. If you have not already accepted the terms of service and set a domain for your Dynamic Links, do so when prompted.

   If you already have a Dynamic Links domain, take note of it. You need to provide a Dynamic Links domain when you programmatically create Dynamic Links.

   

5. Recommended: Specify the URL patterns allowed in your deep links and fallback links. By doing so, you prevent unauthorized parties from creating Dynamic Links that redirect from your domain to sites you don't control. See Allow specific URL patterns.

Use the Firebase console

If you want to generate a single Dynamic Link, either for testing purposes, or for your marketing team to easily create a link that can be used in something like a social media post, the simplest way would be to visit the Firebase console and create one manually following the step-by-step form.

Create a Dynamic Link from parameters

To create a Dynamic Link, create a new DynamicLink object with its Builder, specifying the Dynamic Link parameters with the Builder methods. Then, call buildDynamicLink or buildShortDynamicLink.

The following minimal example creates a long Dynamic Link to https://www.example.com/ that opens with your Android app on Android and the app com.example.ios on iOS:

val dynamicLink = Firebase.dynamicLinks.dynamicLink {
    link = Uri.parse("https://www.example.com/")
    domainUriPrefix = "https://example.page.link"
    // Open links with this app on Android
    androidParameters { }
    // Open links with com.example.ios on iOS
    iosParameters("com.example.ios") { }
}

val dynamicLinkUri = dynamicLink.uri
MainActivity.kt

DynamicLink dynamicLink = FirebaseDynamicLinks.getInstance().createDynamicLink()
        .setLink(Uri.parse("https://www.example.com/"))
        .setDomainUriPrefix("https://example.page.link")
        // Open links with this app on Android
        .setAndroidParameters(new DynamicLink.AndroidParameters.Builder().build())
        // Open links with com.example.ios on iOS
        .setIosParameters(new DynamicLink.IosParameters.Builder("com.example.ios").build())
        .buildDynamicLink();

Uri dynamicLinkUri = dynamicLink.getUri();
MainActivity.java

To create a short Dynamic Link, build a DynamicLink the same way, and then call buildShortDynamicLink. Building a short link requires a network call, so instead of directly returning the link, buildShortDynamicLink returns a Task, which makes the short link available when the request completes. For example:

val shortLinkTask = Firebase.dynamicLinks.shortLinkAsync {
    link = Uri.parse("https://www.example.com/")
    domainUriPrefix = "https://example.page.link"
    // Set parameters
    // ...
}.addOnSuccessListener { (shortLink, flowchartLink) ->
    // You'll need to import com.google.firebase.dynamiclinks.component1 and
    // com.google.firebase.dynamiclinks.component2

    // Short link created
    processShortLink(shortLink, flowchartLink)
}.addOnFailureListener {
    // Error
    // ...
}
MainActivity.kt

Task<ShortDynamicLink> shortLinkTask = FirebaseDynamicLinks.getInstance().createDynamicLink()
        .setLink(Uri.parse("https://www.example.com/"))
        .setDomainUriPrefix("https://example.page.link")
        // Set parameters
        // ...
        .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();
                } else {
                    // Error
                    // ...
                }
            }
        });
MainActivity.java

By default, short Dynamic Links are generated with 17-character link suffixes that make it extremely unlikely that someone can guess a valid Dynamic Link. If, for your use case, there's no harm in someone successfully guessing a short link, you might prefer to generate suffixes that are only as long as necessary to be unique, which you can do by passing ShortDynamicLink.Suffix.SHORT to the buildShortDynamicLink method:

val shortLinkTask = Firebase.dynamicLinks.shortLinkAsync(ShortDynamicLink.Suffix.SHORT) {
    // Set parameters
    // ...
}
MainActivity.kt

Task<ShortDynamicLink> shortLinkTask = FirebaseDynamicLinks.getInstance().createDynamicLink()
        // ...
        .buildShortDynamicLink(ShortDynamicLink.Suffix.SHORT);
        // ...
MainActivity.java

Dynamic Link parameters

You can use the Dynamic Link Builder API to create Dynamic Links with any of the supported parameters. See the API reference for details.

The following example creates a Dynamic Link with several common parameters set:

val dynamicLink = Firebase.dynamicLinks.dynamicLink { // or Firebase.dynamicLinks.shortLinkAsync
    link = Uri.parse("https://www.example.com/")
    domainUriPrefix = "https://example.page.link"
    androidParameters("com.example.android") {
        minimumVersion = 125
    }
    iosParameters("com.example.ios") {
        appStoreId = "123456789"
        minimumVersion = "1.0.1"
    }
    googleAnalyticsParameters {
        source = "orkut"
        medium = "social"
        campaign = "example-promo"
    }
    itunesConnectAnalyticsParameters {
        providerToken = "123456"
        campaignToken = "example-promo"
    }
    socialMetaTagParameters {
        title = "Example of a Dynamic Link"
        description = "This link works whether the app is installed or not!"
    }
}
MainActivity.kt

DynamicLink dynamicLink = FirebaseDynamicLinks.getInstance().createDynamicLink()
        .setLink(Uri.parse("https://www.example.com/"))
        .setDomainUriPrefix("https://example.page.link")
        .setAndroidParameters(
                new DynamicLink.AndroidParameters.Builder("com.example.android")
                        .setMinimumVersion(125)
                        .build())
        .setIosParameters(
                new DynamicLink.IosParameters.Builder("com.example.ios")
                        .setAppStoreId("123456789")
                        .setMinimumVersion("1.0.1")
                        .build())
        .setGoogleAnalyticsParameters(
                new DynamicLink.GoogleAnalyticsParameters.Builder()
                        .setSource("orkut")
                        .setMedium("social")
                        .setCampaign("example-promo")
                        .build())
        .setItunesConnectAnalyticsParameters(
                new DynamicLink.ItunesConnectAnalyticsParameters.Builder()
                        .setProviderToken("123456")
                        .setCampaignToken("example-promo")
                        .build())
        .setSocialMetaTagParameters(
                new DynamicLink.SocialMetaTagParameters.Builder()
                        .setTitle("Example of a Dynamic Link")
                        .setDescription("This link works whether the app is installed or not!")
                        .build())
        .buildDynamicLink();  // Or buildShortDynamicLink()
MainActivity.java

You can set Dynamic Link parameters with the following methods:

https://example.com/link
https://example.page.link

Shorten a long Dynamic Link

To shorten a long Dynamic Link, specify the URL of the Dynamic Link using setLongLink instead of setting parameters with the other builder methods:

val shortLinkTask = Firebase.dynamicLinks.shortLinkAsync {
    longLink = Uri.parse(
        "https://example.page.link/?link=" +
            "https://www.example.com/&apn=com.example.android&ibn=com.example.ios",
    )
}.addOnSuccessListener { (shortLink, flowChartLink) ->
    // You'll need to import com.google.firebase.dynamiclinks.component1 and
    // com.google.firebase.dynamiclinks.component2

    // Short link created
    processShortLink(shortLink, flowChartLink)
}.addOnFailureListener {
    // Error
    // ...
}
MainActivity.kt

Task<ShortDynamicLink> shortLinkTask = FirebaseDynamicLinks.getInstance().createDynamicLink()
        .setLongLink(Uri.parse("https://example.page.link/?link=https://www.example.com/&apn=com.example.android&ibn=com.example.ios"))
        .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();
                } else {
                    // Error
                    // ...
                }
            }
        });
MainActivity.java