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Have a previously running app that is no longer running and I have been trying to work this out for weeks. Have got it to a point now where it almost runs but I get the following issues at the last hurdle:
flutter run -v
This appears to successfully build the app and launch it, the screen briefly goes white and then the app closes. The last entries from the terminal output is:
[ +293 ms] ------ Debug phase ------
[ ] Starting debug of 53225g34b4c604fe43a334525340e269626a (D111AP,
iPhone 7 Plus, iphoneos, arm64) a.k.a. 'iPhone' connected through USB...
[ +935 ms] [ 0%] Looking up developer disk image
[ +27 ms] [ 95%] Developer disk image mounted successfully
[ +367 ms] [100%] Connecting to remote debug server
[ ] -------------------------
[+1080 ms] (lldb) command source -s 0
'/tmp/1D186BA70/fruitstrap-lldb-prep-cmds-4c604fe43a334525340e269626a'
[ ] Executing commands in
'/tmp/1D186BA70/fruitstrap-lldb-prep-cmds-4c604fe43a334525340e269626a'
[ ] (lldb) platform select remote-ios --sysroot
'/Users/sjr/Library/Developer/Xcode/iOS DeviceSupport/13.3.1 (17D50)/Symbols'
[ ] Platform: remote-ios
[ ] Connected: no
[ ] SDK Path: "/Users/sjr/Library/Developer/Xcode/iOS
DeviceSupport/13.3.1 (17D50)/Symbols"
[ ] (lldb) target create
"/Users/sjr/Projects/my_app/build/ios/iphoneos/Runner.app"
[+10050 ms] Current executable set to
'/Users/sjr/Projects/my_app/build/ios/iphoneos/Runner.app' (arm64).
[ ] (lldb) script
fruitstrap_device_app="/private/var/containers/Bundle/Application/62B3E66E1/Runner.app"
[ +443 ms] (lldb) script fruitstrap_connect_url="connect://127.0.0.1:49422"
[ ] (lldb) script fruitstrap_output_path=""
[ ] (lldb) script fruitstrap_error_path=""
[ ] (lldb) target modules search-paths add /usr
"/Users/sjr/Library/Developer/Xcode/iOS DeviceSupport/13.3.1
(17D50)/Symbols/usr" /System "/Users/sjr/Library/Developer/Xcode/iOS
DeviceSupport/13.3.1 (17D50)/Symbols/System"
"/private/var/containers/Bundle/Application/62B3E66E1
" "/Users/sjr/Projects/my_app/build/ios/iphoneos"
"/var/containers/Bundle/Application/62B3E66E1"
"/Users/sjr/Projects/my_app/build/ios/iphoneos" /Developer
"/Users/sjr/Library/Developer/Xcode/iOS DeviceSupport/13.3.1
(17D50)/Symbols/Developer"
[ +35 ms] (lldb) command script import
"/tmp/1D186BA70/fruitstrap_4c604fe43a334525340e269626a.py"
[ +4 ms] (lldb) command script add -f
fruitstrap_4c604fe43a334525340e269626a.connect_command connect
[ ] (lldb) command script add -s asynchronous -f
fruitstrap_4c604fe43a334525340e269626a.run_command run
[ ] (lldb) command script add -s asynchronous -f
fruitstrap_4c604fe43a334525340e269626a.autoexit_command autoexit
[ ] (lldb) command script add -s asynchronous -f
fruitstrap_4c604fe43a334525340e269626a.safequit_command safequit
[ ] (lldb) connect
[ +52 ms] (lldb) run
[ +277 ms] success
[ ] (lldb) safequit
[ +120 ms] Process 434 detached
[ +48 ms] Application launched on the device. Waiting for observatory port.
[ +4 ms] Checking for advertised Dart observatories...
[+5026 ms] mDNS lookup failed, attempting fallback to reading device log.
[ ] Waiting for observatory port.
And the issue looks different in Xcode (although is quite likely exactly the same issue). Looks like maybe a memory leak? I am not sure how to read this information. I get an error appearing that looks like this:
io.flutter.204.ui (625): signal SIGABRT
And then in the logs beneath I have:
Runner(439,0x1009c5800) malloc: enabling scribbling to detect mods to free blocks
Runner(439,0x1009c5800) malloc: recording malloc and VM allocation stacks using lite mode
2020-03-31 07:54:22.330547+0800 Runner[439:345566] Failed to find snapshot: /private/var/containers/Bundle/Application/E00E6D3690/Runner.app/Frameworks/App.framework/flutter_assets/kernel_blob.bin
2020-03-31 07:54:22.475589+0800 Runner[439:345566] Metal API Validation Enabled
2020-03-31 07:54:22.864937+0800 Runner[439:345566] Failed to find snapshot: /private/var/containers/Bundle/Application/E00E6D3690/Runner.app/Frameworks/App.framework/flutter_assets/kernel_blob.bin
2020-03-31 07:54:22.932713+0800 Runner[439:345566] Failed to find snapshot: /private/var/containers/Bundle/Application/E00E6D3690/Runner.app/Frameworks/App.framework/flutter_assets/kernel_blob.bin
2020-03-31 07:54:22.976036+0800 Runner[439:345823] flutter: Observatory listening on http://127.0.0.1:51027/Wl9caPukKFs=/
2020-03-31 07:54:22.993612+0800 Runner[439:345566] Failed to find snapshot: /private/var/containers/Bundle/Application/E00E6D3690/Runner.app/Frameworks/App.framework/flutter_assets/kernel_blob.bin
2020-03-31 07:54:23.030173+0800 Runner[439:345566] Failed to find snapshot: /private/var/containers/Bundle/Application/E00E6D3690/Runner.app/Frameworks/App.framework/flutter_assets/kernel_blob.bin
Literally hundreds more of this exact section:
2020-03-31 07:54:23.030173+0800 Runner[439:345566] Failed to find snapshot: /private/var/containers/Bundle/Application/E00E6D3690/Runner.app/Frameworks/App.framework/flutter_assets/kernel_blob.bin
And then it continues:
../../third_party/dart/runtime/vm/clustered_snapshot.cc: 68: error: Out of memory.
2020-03-31 07:54:35.497087+0800 Runner[439:346457] version=2.5.0 (Fri Sep 6 20:10:36 2019 +0200) on "ios_arm64"
thread=1245963, isolate=main(0x2cb9de000)
2020-03-31 07:54:35.510204+0800 Runner[439:346457] pc 0x00000001013019ac fp 0x00000002d76837e0 Dart_DumpNativeStackTrace
2020-03-31 07:54:35.510996+0800 Runner[439:346457] pc 0x0000000100e94518 fp 0x00000002d7683800 dart::Assert::Fail(char const*, ...)
2020-03-31 07:54:35.511862+0800 Runner[439:346457] pc 0x0000000100f2969c fp 0x00000002d7683860 dart::FunctionDeserializationCluster::ReadFill(dart::Deserializer*)
2020-03-31 07:54:35.512319+0800 Runner[439:346457] pc 0x0000000100f2e4ec fp 0x00000002d76839b0 dart::FullSnapshotReader::ReadIsolateSnapshot()
2020-03-31 07:54:35.512738+0800 Runner[439:346457] pc 0x0000000100f34d88 fp 0x00000002d7683f70 dart::Dart::InitializeIsolate(unsigned char const*, unsigned char const*, unsigned char const*, unsigned char const*, unsigned char const*, long, void*)
2020-03-31 07:54:35.513417+0800 Runner[439:346457] pc 0x00000001012e8220 fp 0x00000002d7684010 dart::CreateIsolate(dart::IsolateGroup*, char const*, void*, char**)
2020-03-31 07:54:35.514492+0800 Runner[439:346457] pc 0x0000000100b0ccd4 fp 0x00000002d7684270 flutter::DartIsolate::CreateDartVMAndEmbedderObjectPair(char const*, char const*, char const*, char const*, Dart_IsolateFlags*, std::__1::shared_ptr<flutter::DartIsolate>*, bool, char**)
2020-03-31 07:54:35.515065+0800 Runner[439:346457] pc 0x0000000100b0c4fc fp 0x00000002d7684450 flutter::DartIsolate::CreateRootIsolate(flutter::Settings const&, fml::RefPtr<flutter::DartSnapshot const>, fml::RefPtr<flutter::DartSnapshot const>, flutter::TaskRunners, std::__1::unique_ptr<flutter::Window, std::__1::default_delete<flutter::Window> >, fml::WeakPtr<flutter::IOManager>, fml::WeakPtr<flutter::ImageDecoder>, std::__1::basic_string<char, std::__1::char_traits<char>, std::__1::allocator<char> >, std::__1::basic_string<char, std::__1::char_traits<char>, std::__1::allocator<char> >, Dart_IsolateFlags*, std::__1::function<void ()>, std::__1::function<void ()>)
2020-03-31 07:54:35.515707+0800 Runner[439:346457] pc 0x0000000100b15000 fp 0x00000002d7684720 flutter::RuntimeController::RuntimeController(flutter::RuntimeDelegate&, flutter::DartVM*, fml::RefPtr<flutter::DartSnapshot const>, fml::RefPtr<flutter::DartSnapshot const>, flutter::TaskRunners, fml::WeakPtr<flutter::IOManager>, fml::WeakPtr<flutter::ImageDecoder>, std::__1::basic_string<char, std::__1::char_traits<char>, std::__1::allocator<char> >, std::__1::basic_string<char, std::__1::char_traits<char>, std::__1::allocator<char> >, std::__1::function<void (long long)>, flutter::RuntimeController::WindowData, std::__1::function<void ()>, std::__1::function<void ()>)
2020-03-31 07:54:35.516437+0800 Runner[439:346457] pc 0x0000000100b1b858 fp 0x00000002d7684b50 flutter::Engine::Engine(flutter::Engine::Delegate&, flutter::DartVM&, fml::RefPtr<flutter::DartSnapshot const>, fml::RefPtr<flutter::DartSnapshot const>, flutter::TaskRunners, flutter::Settings, std::__1::unique_ptr<flutter::Animator, std::__1::default_delete<flutter::Animator> >, fml::WeakPtr<flutter::IOManager>)
2020-03-31 07:54:35.517172+0800 Runner[439:346457] pc 0x0000000100b2c1d0 fp 0x00000002d7684fe0 std::__1::__function::__func<fml::internal::CopyableLambda<flutter::Shell::CreateShellOnPlatformThread(flutter::DartVMRef, flutter::TaskRunners, flutter::Settings, fml::RefPtr<flutter::DartSnapshot const>, fml::RefPtr<flutter::DartSnapshot const>, std::__1::function<std::__1::unique_ptr<flutter::PlatformView, std::__1::default_delete<flutter::PlatformView> > (flutter::Shell&)>, std::__1::function<std::__1::unique_ptr<flutter::Rasterizer, std::__1::default_delete<flutter::Rasterizer> > (flutter::Shell&)>)::$_0>, std::__1::allocator<fml::internal::CopyableLambda<flutter::Shell::CreateShellOnPlatformThread(flutter::DartVMRef, flutter::TaskRunners, flutter::Settings, fml::RefPtr<flutter::DartSnapshot const>, fml::RefPtr<flutter::DartSnapshot const>, std::__1::function<std::__1::unique_ptr<flutter::PlatformView, std::__1::default_delete<flutter::PlatformView> > (flutter::Shell&)>, std::__1::function<std::__1::unique_ptr<flutter::Rasterizer, std::__1::default_delete<flutter::Rasterizer> > (flutter::Shell&)>)::$_0> >, void ()>::operator()()
2020-03-31 07:54:35.518362+0800 Runner[439:346457] pc 0x0000000100add9e8 fp 0x00000002d7685030 fml::MessageLoopImpl::FlushTasks(fml::FlushType)
2020-03-31 07:54:35.518837+0800 Runner[439:346457] pc 0x0000000100ae209c fp 0x00000002d7685050 fml::MessageLoopDarwin::OnTimerFire(__CFRunLoopTimer*, fml::MessageLoopDarwin*)
2020-03-31 07:54:35.519148+0800 Runner[439:346457] pc 0x000000019eb6503c fp 0x00000002d7685060 <redacted>
2020-03-31 07:54:35.519351+0800 Runner[439:346457] pc 0x000000019eb64d78 fp 0x00000002d7686110 <redacted>
2020-03-31 07:54:35.519583+0800 Runner[439:346457] pc 0x000000019eb64448 fp 0x00000002d76861a0 <redacted>
So to my untrained eye it looks like it is trying to do this:
2020-03-31 07:54:23.030173+0800 Runner[439:345566] Failed to find snapshot: /private/var/containers/Bundle/Application/E00E6D3690/Runner.app/Frameworks/App.framework/flutter_assets/kernel_blob.bin
Thousands of times until it runs out of memory, but I am not quite sure what this is, or how to begin trying to resolve it.
Edit: Flutter doctor output.
flutter doctor -v
[✓] Flutter (Channel stable, v1.9.1+hotfix.6, on Mac OS X 10.15.4 19E264b,
locale en-AU)
• Flutter version 1.9.1+hotfix.6 at /Users/sjr/flutter
• Framework revision 68587a0916 (7 months ago), 2019-09-13 19:46:58 -0700
• Engine revision b863200c37
• Dart version 2.5.0
[✗] Android toolchain - develop for Android devices
✗ Unable to locate Android SDK.
Install Android Studio from:
https://developer.android.com/studio/index.html
On first launch it will assist you in installing the Android SDK
components.
(or visit https://flutter.dev/setup/#android-setup for detailed
instructions).
If the Android SDK has been installed to a custom location, set
ANDROID_HOME to that location.
You may also want to add it to your PATH environment variable.
[✓] Xcode - develop for iOS and macOS (Xcode 11.4)
• Xcode at /Applications/Xcode.app/Contents/Developer
• Xcode 11.4, Build version 11E146
• CocoaPods version 1.7.5
[!] Android Studio (not installed)
• Android Studio not found; download from
https://developer.android.com/studio/index.html
(or visit https://flutter.dev/setup/#android-setup for detailed
instructions).
[!] Connected device
! No devices available
! Doctor found issues in 3 categories.
Edit:
Error Codes resulting from @Hannes Sverrisson's suggestions:
Running pod install... 4.7s
Running Xcode build...
Xcode build done. 16.8s
Failed to build iOS app
Error output from Xcode build:
** BUILD FAILED **
Xcode's output:
=== BUILD TARGET PromisesObjC OF PROJECT Pods WITH CONFIGURATION Release ===
In file included from
/Users/sjr/Projects/my_app/ios/Pods/GoogleDataTransport/GoogleDataTran
sport/GDTCORLibrary/GDTCORLifecycle.m:22:
In file included from
/Users/sjr/Projects/my_app/ios/Pods/GoogleDataTransport/GoogleDataTran
sport/GDTCORLibrary/Private/GDTCORRegistrar_Private.h:17:
In file included from
/Users/sjr/Projects/my_app/build/ios/Release-iphoneos/GoogleDataTransp
ort/GoogleDataTransport.framework/Headers/GDTCORRegistrar.h:19:
In file included from
/Users/sjr/Projects/my_app/build/ios/Release-iphoneos/GoogleDataTransp
ort/GoogleDataTransport.framework/Headers/GDTCORPrioritizer.h:19:
/Users/sjr/Projects/my_app/build/ios/Release-iphoneos/GoogleDataTransp
ort/GoogleDataTransport.framework/Headers/GDTCORLifecycle.h:26:11: error:
duplicate protocol definition of 'GDTCORLifecycleProtocol' is ignored
[-Werror,-Wduplicate-protocol]
@protocol GDTCORLifecycleProtocol <NSObject>
And then thousands more of these "In file" errors until failure.
Edit: After git push, recreate and pull: error displayed in Xcode during build process.
898
I had a similar issue. I downloaded a Flutter sample, and it kept crashing after a brief white screen without any understandable errors. I finally found that some of the codes or packages were depending on newer version of Flutter than the stable version.
In the terminal type:
flutter channel
see what is your current channel, then you can try master or beta channels:
flutter channel master
flutter upgrade
See if this helps!
Also check this suggested solution: https://github.com/flutter/flutter/issues/29286
You need to run
flutter build ios --debug (or --profile or --release) flutter run --releasebefore you launch the project in Xcode.
132
1) Update mac and Xcode.
2) Open Xcode and install simulators.
3) From the Flutter app directory, open ios/Runner.xcworkspace in Xcode and choose a development Team under Signing & Capabilities.
4) Follow these instructions https://flutter.dev/docs/development/ios-project-migration
5) Then run:
flutter clean
flutter build ios
flutter run
All from within your project folder.
6a) If above doesn't work and you are using git or another external source control, then I committed everything and pushed it up. Then, I deleted the folder, git fetched it again and everything worked normally.
6b) Another solution is to remove all pods:
Remove the Pods folder and Podfile.lock files.
and then rebuild the pods:
cd ios
pod deintegrate
cd ..
flutter clean
flutter build ios
There doesnt seem to be enough information right now for us to fix your issue, but from the flutter doctor it may be a problem with the flutter SDK version you are using as it is 7 months old and you are using a new version of xcode to build the project. It looks like there were problems similar to what you are having related to that version of the SDK. Reference
So first, try updating your flutter sdk with flutter upgrade
Please update the flutter doctor and the output of your latest debug run when you have updated so we can try and help you further.
Also, can you try running it on a simulated iOS device as well as an external device to see if it may be a problem with how the xcode project is configured to build?
1
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