Invite Users to Your App

iOS

Android

Swift

func generateContentLink() -> URL {
  let baseURL = URL(string: "https://your-custom-name.page.link")!
  let domain = "https://your-app.page.link"
  let linkBuilder = DynamicLinkComponents(link: baseURL, domainURIPrefix: domain)
  linkBuilder?.iOSParameters = DynamicLinkIOSParameters(bundleID: "com.your.bundleID")
  linkBuilder?.androidParameters =
      DynamicLinkAndroidParameters(packageName: "com.your.packageName")


  // Fall back to the base url if we can't generate a dynamic link.
  return linkBuilder?.link ?? baseURL
}
ViewController.swift

Objective-C

- (NSURL *)generateContentLink {
  NSURL *baseURL = [NSURL URLWithString:@"https://your-custom-name.page.link"];
  NSString *domain = @"https://your-app.page.link";
  FIRDynamicLinkComponents *builder = [[FIRDynamicLinkComponents alloc] initWithLink:baseURL domainURIPrefix:domain];
  builder.iOSParameters = [FIRDynamicLinkIOSParameters parametersWithBundleID:@"com.your.bundleID"];
  builder.androidParameters = [FIRDynamicLinkAndroidParameters parametersWithPackageName:@"com.your.packageName"];

  // Fall back to the base url if we can't generate a dynamic link.
  return builder.link ?: baseURL;
}
ViewController.m

Java

public static Uri generateContentLink() {
    Uri baseUrl = Uri.parse("https://your-custom-name.page.link");
    String domain = "https://your-app.page.link";

    DynamicLink link = FirebaseDynamicLinks.getInstance()
            .createDynamicLink()
            .setLink(baseUrl)
            .setDomainUriPrefix(domain)
            .setIosParameters(new DynamicLink.IosParameters.Builder("com.your.bundleid").build())
            .setAndroidParameters(new DynamicLink.AndroidParameters.Builder("com.your.packageName").build())
            .buildDynamicLink();

    return link.getUri();
}
DynamicLinksUtil.java

Kotlin

fun generateContentLink(): Uri {
    val baseUrl = Uri.parse("https://your-custom-name.page.link")
    val domain = "https://your-app.page.link"

    val link = FirebaseDynamicLinks.getInstance()
            .createDynamicLink()
            .setLink(baseUrl)
            .setDomainUriPrefix(domain)
            .setIosParameters(DynamicLink.IosParameters.Builder("com.your.bundleid").build())
            .setAndroidParameters(DynamicLink.AndroidParameters.Builder("com.your.packageName").build())
            .buildDynamicLink()

    return link.uri
}
DynamicLinksUtil.kt

Swift

lazy private var shareController: UIActivityViewController = {
  let activities: [Any] = [
    "Learn how to share content via Firebase",
    URL(string: "https://firebase.google.com")!
  ]
  let controller = UIActivityViewController(activityItems: activities,
                                            applicationActivities: nil)
  return controller
}()

@IBAction func shareButtonPressed(_ sender: Any) {
  let inviteController = UIStoryboard(name: "Main", bundle: nil)
    .instantiateViewController(withIdentifier: "InviteViewController")
  self.navigationController?.pushViewController(inviteController, animated: true)
}
ViewController.swift

Objective-C

- (UIActivityViewController *)shareController {
  if (_shareController == nil) {
    NSArray *activities = @[
      @"Learn how to share content via Firebase",
      [NSURL URLWithString:@"https://firebase.google.com"]
    ];
    UIActivityViewController *controller = [[UIActivityViewController alloc] initWithActivityItems:activities applicationActivities:nil];
    _shareController = controller;
  }
  return _shareController;
}

- (IBAction)shareLinkButtonPressed:(UIView *)sender {
  if (![sender isKindOfClass:[UIView class]]) {
    return;
  }

  self.shareController.popoverPresentationController.sourceView = sender;
  [self presentViewController:self.shareController animated:YES completion:nil];
}
ViewController.m

Java

private void onShareClicked() {
    Uri link = DynamicLinksUtil.generateContentLink();

    Intent intent = new Intent(Intent.ACTION_SEND);
    intent.setType("text/plain");
    intent.putExtra(Intent.EXTRA_TEXT, link.toString());

    startActivity(Intent.createChooser(intent, "Share Link"));
}
MainActivity.java

Kotlin

private fun onShareClicked() {
    val link = DynamicLinksUtil.generateContentLink()

    val intent = Intent(Intent.ACTION_SEND)
    intent.type = "text/plain"
    intent.putExtra(Intent.EXTRA_TEXT, link.toString())

    startActivity(Intent.createChooser(intent, "Share Link"))
}
MainActivity.kt

iOS

Android

Swift

/// The content within an invite, with optional fields to accommodate all presenters.
/// This type could be modified to also include an image, for sending invites over email.
struct InviteContent {

  /// The subject of the message. Not used for invites without subjects, like text message invites.
  var subject: String?

  /// The body of the message. Indispensable content should go here.
  var body: String?

  /// The URL containing the invite. In link-copy cases, only this field will be used.
  var link: URL

}
InvitePresenter.swift

Objective-C

/// The content within an invite, with optional fields to accommodate all presenters.
/// This type could be modified to also include an image, for sending invites over email.
@interface InviteContent : NSObject <NSCopying>

/// The subject of the message. Not used for invites without subjects, like text message invites.
@property (nonatomic, readonly, nullable) NSString *subject;

/// The body of the message. Indispensable content should go here.
@property (nonatomic, readonly, nullable) NSString *body;

/// The URL containing the invite. In link-copy cases, only this field will be used.
@property (nonatomic, readonly) NSURL *link;

- (instancetype)initWithSubject:(nullable NSString *)subject
                           body:(nullable NSString *)body
                           link:(NSURL *)link NS_DESIGNATED_INITIALIZER;

- (instancetype)init NS_UNAVAILABLE;

@end
InvitePresenter.h

Java

/**
 * The content of an invitation, with optional fields to accommodate all presenters.
 * This type could be modified to also include an image, for sending invites over email.
 */
public class InviteContent {

    /**
     * The subject of the message. Not used for invites without subjects, like SMS.
     **/
    @Nullable
    public final String subject;

    /**
     * The body of the message. Indispensable content should go here.
     **/
    @Nullable
    public final String body;

    /**
     * The URL containing the link to invite. In link-copy cases, only this field will be used.
     **/
    @NonNull
    public final Uri link;

    public InviteContent(@Nullable String subject, @Nullable String body, @NonNull Uri link) {
        // ...
    }

}
InviteContent.java

Kotlin

/**
 * The content of an invitation, with optional fields to accommodate all presenters.
 * This type could be modified to also include an image, for sending invites over email.
 */
data class InviteContent(
    /** The subject of the message. Not used for invites without subjects, like SMS.  */
    val subject: String?,
    /** The body of the message. Indispensable content should go here.  */
    val body: String?,
    /** The URL containing the link to invite. In link-copy cases, only this field will be used.  */
    val link: Uri
)
InviteContent.kt

Swift

/// A type responsible for presenting an invite given using a specific method
/// given the content of the invite.
protocol InvitePresenter {

  /// The name of the presenter. User-visible.
  var name: String { get }

  /// An icon representing the invite method. User-visible.
  var icon: UIImage? { get }

  /// Whether or not the presenter's method is available. iOS devices that aren't phones
  /// may not be able to send texts, for example.
  var isAvailable: Bool { get }

  /// The content of the invite. Some of the content type's fields may be unused.
  var content: InviteContent { get }

  /// Designated initializer.
  init(content: InviteContent, presentingController: UIViewController)

  /// This method should cause the presenter to present the invite and then handle any actions
  /// required to complete the invite flow.
  func sendInvite()

}
InvitePresenter.swift

Objective-C

/// A type responsible for presenting an invite given using a specific method
/// given the content of the invite.
@protocol InvitePresenter <NSObject>

/// The name of the presenter. User-visible.
@property (nonatomic, readonly) NSString *name;

/// An icon representing the invite method. User-visible.
@property (nonatomic, readonly, nullable) UIImage *icon;

/// Whether or not the presenter's method is available. iOS devices that aren't phones
/// may not be able to send texts, for example.
@property (nonatomic, readonly) BOOL isAvailable;

/// The content of the invite. Some of the content type's fields may be unused.
@property (nonatomic, readonly) InviteContent *content;

/// Designated initializer.
- (instancetype)initWithContent:(InviteContent *)content presentingViewController:(UIViewController *)controller;

/// This method should cause the presenter to present the invite and then handle any actions
/// required to complete the invite flow.
- (void)sendInvite;

@end
InvitePresenter.h

Java

/**
 * Presents the invite using a specific method, such as email or social.
 */
public class InvitePresenter {

    /**
     * The user-visible name of the invite method, like 'Email' or 'SMS'
     **/
    public final String name;

    /**
     * An icon representing the invite method.
     **/
    @DrawableRes
    public final int icon;

    /**
     * Whether or not the method is available on this device. For example, SMS is phone only.
     **/
    public final boolean isAvailable;

    /**
     * The Content of the invitation
     **/
    public final InviteContent content;

    public InvitePresenter(String name, @DrawableRes int icon, boolean isAvailable, InviteContent content) {
        // ...
    }

    /**
     * Send the invitation using the specified method.
     */
    public void sendInvite(Context context) {
        // ...
    }

}
InvitePresenter.java

Kotlin

/**
 * Presents the invite using a specific method, such as email or social.
 */
open class InvitePresenter(
    /** The user-visible name of the invite method, like 'Email' or 'SMS'  */
    val name: String,
    /** An icon representing the invite method.  */
    @param:DrawableRes @field:DrawableRes
    val icon: Int,
    /** Whether or not the method is available on this device. For example, SMS is phone only.  */
    val isAvailable: Boolean,
    /** The Content of the invitation  */
    val content: InviteContent
) {
    /**
     * Send the invitation using the specified method.
     */
    open fun sendInvite(context: Context) {
        // ...
    }
}
InvitePresenter.kt

Objective-C

[[FIRDynamicLinks dynamicLinks]
    handleUniversalLink:userActivity.webpageURL
             completion:^(FIRDynamicLink * _Nullable dynamicLink,
                          NSError * _Nullable error) {
      NSString *link = dynamicLink.url;
      BOOL strongMatch = dynamicLink.matchConfidence == FIRDynamicLinkMatchConfidenceStrong;
      // ...
    }];

Swift

FIRDynamicLinks.dynamicLinks()?.handleUniversalLink(userActivity.webpageURL!) { (dynamiclink, error) in
    let link = dynamicLink.url
    let strongMatch = dynamicLink.matchConfidence == FIRDynamicLinkMatchConfidenceStrong
    // ...
}

Objective-C

FIRDynamicLink *dynamicLink = [[FIRDynamicLinks dynamicLinks] dynamicLinkFromCustomSchemeURL:url];
if (dynamicLink) {
  NSString *link = dynamicLink.url;
  BOOL strongMatch = dynamicLink.matchConfidence == FIRDynamicLinkMatchConfidenceStrong;
  // ...
  return YES;
}

Swift

let dynamicLink = FIRDynamicLinks.dynamicLinks()?.dynamicLinkFromCustomSchemeURL(url)
if let dynamicLink = dynamicLink {
  let link = dynamicLink.url
  let strongMatch = dynamicLink.matchConfidence == FIRDynamicLinkMatchConfidenceStrong
  // ...
  return true
}

Java

FirebaseDynamicLinks.getInstance()
        .getDynamicLink(getIntent())
        .addOnCompleteListener(new OnCompleteListener<PendingDynamicLinkData>() {
            @Override
            public void onComplete(@NonNull Task<PendingDynamicLinkData> task) {
                if (!task.isSuccessful()) {
                    // Handle error
                    // ...
                }

                FirebaseAppInvite invite = FirebaseAppInvite.getInvitation(task.getResult());
                if (invite != null) {
                    // Handle invite
                    // ...
                }
            }
        });
MainActivity.java

Kotlin

FirebaseDynamicLinks.getInstance()
        .getDynamicLink(intent)
        .addOnCompleteListener { task ->
            if (!task.isSuccessful) {
                // Handle error
                // ...
            }

            val invite = FirebaseAppInvite.getInvitation(task.result)
            if (invite != null) {
                // Handle invite
                // ...
            }
        }
MainActivity.kt