iOS app is not launching after converting to Swift 3

Question

I have converted the existing app to Swift 3, but when I try to launch it from Xcode nothing happens.

To be exact the app is successfully installed, opened, but shows only white screen. No buildtime or runtime errors.

I put breakpoint in private func application(application: UIApplication, didFinishLaunchingWithOptions launchOptions: [NSObject: AnyObject]?) -> Bool, but it doesn't arrive there.

Launching in simulator prints the following in console:

2016-09-19 14:52:47.881377 ProjectName[63797:9522206] bundleid: com.company.ProjectName, enable_level: 0, persist_level: 0, propagate_with_activity: 0

2016-09-19 14:52:47.897791 ProjectName[63797:9522206] subsystem: com.apple.siri, category: Intents, enable_level: 1, persist_level: 1, default_ttl: 0, info_ttl: 0, debug_ttl: 0, generate_symptoms: 0, enable_oversize: 0, privacy_setting: 0, enable_private_data: 0

2016-09-19 14:52:47.933007 ProjectName[63797:9525057] subsystem: com.apple.UIKit, category: HIDEventFiltered, enable_level: 0, persist_level: 0, default_ttl: 0, info_ttl: 0, debug_ttl: 0, generate_symptoms: 0, enable_oversize: 1, privacy_setting: 2, enable_private_data: 0

2016-09-19 14:52:47.936713 ProjectName[63797:9525057] subsystem: com.apple.UIKit, category: HIDEventIncoming, enable_level: 0, persist_level: 0, default_ttl: 0, info_ttl: 0, debug_ttl: 0, generate_symptoms: 0, enable_oversize: 1, privacy_setting: 2, enable_private_data: 0

2016-09-19 14:52:48.006885 ProjectName[63797:9525049] subsystem: com.apple.BaseBoard, category: MachPort, enable_level: 1, persist_level: 0, default_ttl: 0, info_ttl: 0, debug_ttl: 0, generate_symptoms: 0, enable_oversize: 0, privacy_setting: 0, enable_private_data: 0

2016-09-19 14:52:48.039142 ProjectName[63797:9522206] subsystem: com.apple.UIKit, category: StatusBar, enable_level: 0, persist_level: 0, default_ttl: 0, info_ttl: 0, debug_ttl: 0, generate_symptoms: 0, enable_oversize: 1, privacy_setting: 2, enable_private_data: 0

2016-09-19 14:52:48.142475 ProjectName[63797:9522206] subsystem: com.apple.BackBoardServices.fence, category: App, enable_level: 1, persist_level: 0, default_ttl: 0, info_ttl: 0, debug_ttl: 0, generate_symptoms: 0, enable_oversize: 0, privacy_setting: 0, enable_private_data: 0

Device: iPhone SE iOS 9.3.5

Simulator: 6 and SE, both iOS 10.0

Help? Anyone? Please.

yes may be i am not sure but apply this answer its may be helpfull. — Amit Srivastava, Sep 19 '16 at 13:01
@pedrouan Never knew this command... Unfortunately didn't help in this case (( Anyway thanks! — Elena, Sep 19 '16 at 14:12

score 3 · Answer 1 · answered Sep 19 '16 at 13:03

3

Product -> Scheme -> Edit Scheme Then on Run Section on the left, select Argument Tab -> Environment Variable:

OS_ACTIVITY_MODE to value : disable.

Removed the framework it from Cocoapods, installed it manually by copying the SDK in the project.

answered Sep 19 '16 at 13:03

Amit Srivastava

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I removed totally the framework from the project, and set `OS_ACTIVITY_MODE` to disable. No result =( – Elena Sep 19 '16 at 13:14

score 1 · Accepted Answer · answered Sep 19 '16 at 14:16

1

Try to replace

func application(_ application: UIApplication, didFinishLaunchingWithOptions launchOptions: [NSObject: AnyObject]?) -> Bool {

to this:

func applicationDidFinishLaunching(_ application: UIApplication) {

answered Sep 19 '16 at 14:16

pedrouan

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OMG, you saved me! That was the problem: the wrong signature of the main app method. Actually I used this one now: `func application(_ application: UIApplication, didFinishLaunchingWithOptions launchOptions: [UIApplicationLaunchOptionsKey: Any]?)` 'cause I'll need launch options later. – Elena Sep 19 '16 at 14:30
1

Oh yeah, this function is updated either- not returning anything. You're welcome. – pedrouan Sep 19 '16 at 15:22

iOS app is not launching after converting to Swift 3

2 Answers2