Problem & context

I am building a Maccatalyst app that uses a custom scheme (deep-link).

When my app is running and I click on the link to my app, my app opens and receives the opening url.

However, when my app is closed, and I click on the link to my app, it opens but does not receive the opening url. This issue does not occur on ios.

(FYI, the app is written with react-native 0.59, but the issue is not on the javascript side).

Can anyone help me on this ?

Code

Her is my AppDelegate.m file

#import <CoreGraphics/CGGeometry.h>
#import "AppDelegate.h"

#import <React/RCTBridge.h>
#import <React/RCTBundleURLProvider.h>
#import <React/RCTRootView.h>
#import <React/RCTLinkingManager.h>

@implementation AppDelegate

- (BOOL)application:(UIApplication *)application didFinishLaunchingWithOptions:(NSDictionary *)launchOptions
{
  RCTBridge *bridge = [[RCTBridge alloc] initWithDelegate:self launchOptions:launchOptions];
  RCTRootView *rootView = [[RCTRootView alloc] initWithBridge:bridge
                                             moduleName:@"myapp"
                                            initialProperties:nil];

  rootView.backgroundColor = [[UIColor alloc] initWithRed:1.0f green:1.0f blue:1.0f alpha:1];

  self.window = [[UIWindow alloc] initWithFrame:[UIScreen mainScreen].bounds];
  UIViewController *rootViewController = [UIViewController new];
  rootViewController.view = rootView;
  self.window.rootViewController = rootViewController;
  [self.window makeKeyAndVisible];
  return YES;
}

- (NSURL *)sourceURLForBridge:(RCTBridge *)bridge
{
#if DEBUG
  return [[RCTBundleURLProvider sharedSettings] jsBundleURLForBundleRoot:@"index" fallbackResource:nil];
#else
  return [[NSBundle mainBundle] URLForResource:@"main" withExtension:@"jsbundle"];
#endif
}

- (BOOL)application:(UIApplication *)application
            openURL:(NSURL *)url
            options:(NSDictionary<UIApplicationOpenURLOptionsKey,id> *)options
{
  // Listen to incoming app links during app execution
  return [RCTLinkingManager application:application openURL:url options:options];
}

- (BOOL)application:(UIApplication *)application continueUserActivity:(nonnull NSUserActivity *)userActivity
 restorationHandler:(nonnull void (^)(NSArray<id<UIUserActivityRestoring>> * _Nullable))restorationHandler
{
  // Listen to universal links in iOS and tvOS
  // does not work when app is closed in debug mode
  return [RCTLinkingManager application:application
                   continueUserActivity:userActivity
                     restorationHandler:restorationHandler];
}

- (void)applicationDidEnterBackground:(UIApplication *)application
{
    ...
}
- (void)applicationWillEnterForeground:(UIApplication *)application
{
    ...
}

@end

What I have tried

• I checked that the issue is not on the javascript side because when the app is closed, neither application:openURL:options nor application:continueUserActivity:restorationHandler (from the app delegate) are called.

• As explained here, I tried to see if anything was sent in launchOptions in didFinishLaunchingWithOptions. But that is apparently only called on the very first launch.

• I have read the official doc but couldn't find the solution to my problem.

The answer was in the doc

This method is not called if your implementations return NO from both the application:willFinishLaunchingWithOptions: and application:didFinishLaunchingWithOptions: methods. (If only one of the two methods is implemented, its return value determines whether this method is called.) If your app implements the applicationDidFinishLaunching: method instead of application:didFinishLaunchingWithOptions:, this method is called to open the specified URL after the app has been initialized.

So I need to watch for the key UIApplicationLaunchOptionsURLKey in the options of didFinishLaunchingWithOptions.

Next time, I'll read the docs more carefully.