Intercom causes crash on iOS if CarPlay is started

Question

If starting the app in CarPlay, Intercom causes the app to crash:[CPTemplateApplicationScene windows]: unrecognized selector sent to instanceTerminating app due to uncaught exception 'NSInvalidArgumentException', reason: '-[CPTemplateApplicationScene windows]: unrecognized selector sent to instance 0x103386dc0'terminating with uncaught exception of type NSException​Previously we haver setup Intercom in AppDelegate, but in preparation for CarPlay, we moved Intercom setup to SceneDelegate, as per the documentation.​Currently the only way to have Intercom be stable, is to uninstall the app and reinstall. But that user experience is terrible.

Anonymous · Accepted Answer

Hey @emil a​. Thanks for reporting this. Can I just replay this to make sure I've understood correctly?A user has your app installed, and that version of the app initialises the iOS SDK in the AppDelegate.The user upgrades your app. The new version initialises the iOS SDK in the SceneDelegate and also adds support for CarPlay.The app works fine on the iPhone but crashes whenever CarPlay is activated.Uninstalling the app and then installing it again resolves the issue; the iOS SDK works as expected and there's no crash when CarPlay is activated.Is that right? Is there anything I'm misunderstanding or missing there?Along with confirming that understanding, it'd be good to understand which version of the iOS SDK you're using, which version of iOS you're seeing the issue with, and, if possible, it'd be good to get hold of the full stack trace. If you're using any wrappers (eg. for Cordova, React Native etc) it'd be good to know which of those you're using as well.

User739 · Answer

Hello :) I have the same issue with the same error...I added CarPlay on the app and I have initialised Intercom on AppDelegate.m inside "didFinishLaunchingWithOptions" method as 'react-native-intercom' package suggests..If I comment out Intercom, CarPlay works fine, else the app crashes on CarPlay launch ..In order to add CarPlay I have two Scenes on the App... One for CarPlay(CarPlaySceneDelegate.m) and one for iPhone(SceneDelegate.m)... ( It is interesting that if I open Intercom panel, by calling the 'displayMessageComposer' method, and after that connect to CarPlay, there is no crash. But If I disconnect and connect again to CarPlay with Intercom panel closed, app crashes in the same way.  )I am using React Native "0.63.3", iOS version 14, react-native-intercom "^19.0.0" ..I already tried to Initialise Intercom on 'SceneDelegate.m' and to use the latest version on 'react-native-intercom' with no success ...Here is the exact error:```Terminating app due to uncaught exception 'NSInvalidArgumentException', reason: '-[CPTemplateApplicationScene windows]: unrecognized selector sent to instance 0x7f94c2687160'*** First throw call stack:(0 CoreFoundation0x00007fff20421af6 __exceptionPreprocess + 2421 libobjc.A.dylib 0x00007fff20177e78 objc_exception_throw + 482 CoreFoundation0x00007fff204306f7 +[NSObject(NSObject) instanceMethodSignatureForSelector:] + 03 UIKitCore 0x00007fff246cba43 -[UIResponder doesNotRecognizeSelector:] + 2924 CoreFoundation0x00007fff20426036 ___forwarding___ + 14895 CoreFoundation0x00007fff20428068 _CF_forwarding_prep_0 + 1206 Carge 0x00000001084ae93c -[ICMRootViewController findHostAppWindow] + 1357 Carge 0x00000001084ae87c -[ICMRootViewController hostAppWindow] + 648 Carge 0x00000001084ab345 -[ICMRootViewController commonInit] + 349 Carge 0x00000001084ab2c2 -[ICMRootViewController initWithWindowScene:] + 9810Carge 0x000000010845c3cf -[ICMPresentationManager createIntercomWindowInScene:] + 9111Carge 0x000000010845c321 -[ICMPresentationManager sceneWillEnterForeground:] + 27712CoreFoundation0x00007fff20362f12 __CFNOTIFICATIONCENTER_IS_CALLING_OUT_TO_AN_OBSERVER__ + 1213CoreFoundation0x00007fff20362ee1 ___CFXRegistrationPost_block_invoke + 4914CoreFoundation0x00007fff203625ff _CFXRegistrationPost + 45415CoreFoundation0x00007fff20361f6d _CFXNotificationPost + 79616Foundation0x00007fff207e598a -[NSNotificationCenter postNotificationName:object:userInfo:] + 5917UIKitCore 0x00007fff23cbafe1 -[_UISceneLifecycleMonitor willEnterForeground] + 27018UIKitCore 0x00007fff23cbbf0f __111-[_UIWindowSceneFBSSceneLifecycleMonitor transitionToTargetState:fromState:withTransitionContext:preparations:]_block_invoke_2.113 + 12119UIKitCore 0x00007fff24251d1e _UIScenePerformActionsWithLifecycleActionMask + 88...)terminating with uncaught exception of type NSException CoreSimulator 732.18.6 - Device: iPhone 11 (7B6B0E39-7EB4-493E-8E0A-B0F9BDF57AFA) - Runtime: iOS 14.4 (18D46) - DeviceType: iPhone 11```

Join the Intercom Community 🎉

Intercom Customers and Employees

Login to the community

Intercom Customers and Employees

Scanning file for viruses.

This file cannot be downloaded