receive dynamic links on iOS

Receive Dynamic Links on iOS

To receive the Firebase Dynamic Links that you created, you must include the Dynamic Links SDK in your app and call the

handleUniversalLink:

 and 

dynamicLinkFromCustomSchemeURL:

 methods when your app loads to get the data passed in the Dynamic Link.

Prerequisites

Firebase Dynamic Links requires iOS 8 or newer. You can target iOS 7 in your app, but all Firebase Dynamic Links SDK calls will be no-ops if the app isn't running on iOS 8 or newer.

Set up Firebase and the Dynamic Links SDK

Add Firebase to your iOS project. Include the following pod in your 

Podfile

:

pod 'Firebase/DynamicLinks'
Run 

pod install

 and open the created 

.xcworkspace

 file.
In the Firebase console, open the Dynamic Links section.Accept the terms of service if you are prompted to do so.
Take note of your project's Dynamic Links domain, which is displayed at the top of the Dynamic Links page. You need your project's Dynamic Links domain to programmatically create Dynamic Links. A Dynamic Links domain look like 

app_code.app.goo.gl

.

On the image above the app_code is equal to abc123.

Ensure that your app's App Store ID and your App ID prefix is specified in your app's settings. To view and edit your app's settings, go to your Firebase project's Settings page and select your iOS app.You can confirm that your Firebase project is properly configured to use Dynamic Links in your iOS app by opening the following URL:https://app_code.app.goo.gl/apple-app-site-associationIf your app is connected, the 

apple-app-site-association

 file contains a reference to your app's App ID prefix and bundle ID. For example:

{"applinks":{"apps":[],"details":[{"appID":"1234567890.com.example.ios","paths":["/*"]}]}}If the 

details

 field is empty, double-check that you specified your App ID prefix. Note that your App ID prefix may not be the same as your Team ID.

Open Dynamic Links in your app

In the Info tab of your app's Xcode project, create a new URL type to be used for Dynamic Links. Set the Identifier field to a unique value and the URL scheme field to be your bundle identifier, which is the default URL scheme used by Dynamic Links.
In the Capabilities tab of your app's Xcode project, enable Associated Domains and add the following to the Associated Domains list:

applinks:app_code.app.goo.gl
Import the Firebase module in your 

UIApplicationDelegate

:

SWIFT

OBJECTIVE-C

@import Firebase;
Configure a 

FirebaseApp

 shared instance, typically in your application's 

application:didFinishLaunchingWithOptions:

 method:

SWIFT

OBJECTIVE-C

// Use Firebase library to configure APIs
[FIRApp configure];
Next, in the 

application:continueUserActivity:restorationHandler: 

method, handle links received as Universal Links when the app is already installed (on iOS 9 and newer):

SWIFT

OBJECTIVE-C

- (BOOL)application:(UIApplication *)application
continueUserActivity:(NSUserActivity *)userActivity
 restorationHandler:(void (^)(NSArray *))restorationHandler {
  BOOL handled = [[FIRDynamicLinks dynamicLinks] handleUniversalLink:userActivity.webpageURL
                                                          completion:^(FIRDynamicLink * _Nullable dynamicLink,
                                                                       NSError * _Nullable error) {
                                                            // ...
                                                          }];
  return handled;
}
Finally, in the 

application:openURL:sourceApplication:annotation: 

(iOS 8 and older) and 

application:openURL:options:

 (iOS 9 and up) methods, handle links received through your app's custom URL scheme. These methods are called when your app receives a link on iOS 8 and older, and when your app is opened for the first time after installation on any version of iOS.If the Dynamic Link isn't found on your app's first launch (on any version of iOS), this method will be called with the 

FIRDynamicLink

's 

url

 set to 

nil

, indicating that the SDK failed to find a matching pending Dynamic Link.

SWIFT

OBJECTIVE-C

- (BOOL)application:(UIApplication *)app
            openURL:(NSURL *)url
            options:(NSDictionary<NSString *, id> *)options {
  return [self application:app
                   openURL:url
         sourceApplication:options[UIApplicationOpenURLOptionsSourceApplicationKey]
                annotation:options[UIApplicationOpenURLOptionsAnnotationKey]];
}

- (BOOL)application:(UIApplication *)application
            openURL:(NSURL *)url
  sourceApplication:(NSString *)sourceApplication
         annotation:(id)annotation {
  FIRDynamicLink *dynamicLink = [[FIRDynamicLinks dynamicLinks] dynamicLinkFromCustomSchemeURL:url];

  if (dynamicLink) {
    if (dynamicLink.url) {
      // Handle the deep link. For example, show the deep-linked content,
      // apply a promotional offer to the user's account or show customized onboarding view.
      // ...
    } else {
      // Dynamic link has empty deep link. This situation will happens if
      // Firebase Dynamic Links iOS SDK tried to retrieve pending dynamic link,
      // but pending link is not available for this device/App combination.
      // At this point you may display default onboarding view.
    }
    return YES;
  }
  return NO;
}