I just started learning Flutter so I started a new project, didn't edit it at all. When running the app using the android emulator, everything looks fine, but when I toggle to IOS from Flutter Inspector I get this error
'package: flutter/src/renering/object.dart': Failed Assertion: line 1152 pos12: 'child.parentData !=null': is not true.
Any idea why this is happening?
This is a known issue https://github.com/flutter/flutter/issues/16560
There is no solution or workaround available yet.
Please upvote the initial comment in the issue to raise priority.
Related
I've run into this situation: the plugin and my code ran perfectly in Android, but in iOS these errors happened:
(Screenshot - my reputation is too low to post images. For easy reading I took the screenshot of VSCode debug console; the errors were the same while run it from Xcode)
https://user-images.githubusercontent.com/10349431/94634472-b2d42e80-0302-11eb-9dc7-fa2956511b82.png
It shows in the debug screenshot above exceptions took place while invoking method startMonitoring, but after I commented related codes it turned into other methods (e.g. stopMonitoring, addRegion, etc).
(BTW, the error messages may be as many as hundreds of lines - in the screenshot above, there were actually 381 lines of total error messages.)
My environment:
MacOS 10.15.7
iOS 12.4.8 (iPad) 13.3 (iPhone)
Android 8.0.0
Xcode 12.0.1 (12A7300)
VSCode 1.49.2
Android Studio 4.0.1 with all SDK after Android 5.1 Lollipop
Thanks for any help!
I got it... In this case, BeaconsPlugin.listenToBeacons should not be placed below addRegion or startMonitoring/stopMonitoring. It should be in the first line of all actions of this plugin in the initPlatformState scope, just like it has been in the example.
Sorry for dumb question.
This error mostly occurs when you try to Hot Reload or Hot Restart after just adding new package to your pubspec.yaml.
Just stop the running project(app) and then freshly run it again. So that the added package(which contains the implementations) also pushed to the device
please check : https://stackoverflow.com/a/60088062/11989529
and this : MissingPluginException while using plugin for flutter
the same problem
I'm using XCode11 and ionic4. cordova version ios#5.0.0
project builds successfully using ionic cordova build ios
also successfull build in xcode
but when running on simulator, it end up showing white screen and nothing happens next. here is the console output showing the issues:
Log1
Log2
stuck on this for 4 days. checked so many suggestions on ionic blogs and nothing worked so far. I regret using ionic because its very buggy/unstable... please help
ISSUES:
-Failed to load webpage with error: the operation couldnt be completed(NSURLErrorDomain error -999)
-NSURL Connection finished with error -code -1100
-ERROR: HTTP Request(OSRequestRegisterUser) must contain an app_id parameter
-ERROR: Encountered error during push registration with OneSignal
in addition to the above errors, the iOS simulator hangs on "White Screen", the application does not load and nothing happens next.
Try this:
On your xcode, navigate to your plugin folder, locate a file named OneSignalPush.m
Inside, locate the initOneSignalObject,
add this: appId = "your-app-id-here";
right after this code:
[OneSignal setValue:#"Cordova" forKey:#"mSDKType"];
That did the trick for me.
After working just fine on both iPhone and iPad for a month, my Xcode 9 app has consistently started crashing causing me the following fatal problem: When I build & run it on an iPhone (simulator or device) Xcode completes loading the app and then crashes too fast for me to copy/paste the error from the debugger. When I run on iPad it works fine leading me to believe this is a result of something related to the split master/detail view.
If I use either an exception breakpoint or an "all C++ exceptions" it will stop at the AppDelegate class and crash if I hit play. If I use only an "all Objective-C exceptions" it will crash as before.
In the debug view hierarchy I get the following errors as well:
Error: Unable to capture view hierarchy.
Details: Log Title: Data source expression execution failure.
Log Details: error evaluating expression “(id)
[[(Class)objc_getClass("DBGTargetHub") sharedHub]
performRequestWithRequestInBase64:#"...
Log Method: -[DBGDataSourceConnectionLibViewDebugger
_executeLLDBExpression:forRequest:onPotentialThread:iteration:]
_block_invoke_2
Method: -[DBGViewDebugger updateDebugHierarchy]_block_invoke_2
I have tested other apps and this issue is unique to the app I am working on. Any ideas or debugging tips for how to proceed? I might just have to redo this whole project again if I can't even find the root cause of this! Appreciate any help.
Quick solution: Reset Simulator Device
I managed to resolve the above issue thanks to some serious digging. First, to resolve the instantaneous crash problem, I set a breakpoint at every line in the app delegate. That allowed me to narrow the error to a memory handling problem. From there I started running the code on one of each device available, and realized the crash only occurred on devices I had used earlier in development. Resetting those devices solved the problem.
The core issue here is that when you clean/rebuild your xcode program, it updates the app code on the device, but not necessarily the data model information. So when I changed my data model by including new data and renaming old data it was not properly updated.
I recently updated my IOS to 11 beta 3, to make sure my ionic app would still work.
However it crashes almost right away with a black screen when I launch it.
I try to debug it with Xcode, however when I build to run it on my iPhone and catch the error, the "running on device" gets stuck on the following :
What can I do with this? I'm stuck with an app doomed to die once ios11 gets released, anyone could help?
The problem is normally caused due to wk web view plugin. Try removing the plugin and run again
In my iOS app crash log I found this statement:
HW kbd Failed to set (null) as keyboard focus ios
Does anyone know what is this and how to resolve it?
I've just encountered this exception running a Xamarin app on the simulator. It started occurring after I toggled the software keyboard off while debugging the app. Given the exception mentioning the keyboard I think that's what caused it.
Uninstalling the app from the emulator, cleaning and rebuilding fixed the issue for me.
Unsure if this bug is on Apple's side or Xamarin's.
The only references I could find related to Xamarin was close, but the inverse of this - the app crashing on the simulator, but working on an actual device. The resolution in that forum post doesn't describe what the problem might be, but does suggest that cleaning the project and rebuilding may resolve it.
The specific message HW kbd Failed to set (null) as keyboard focus ios is related to the app crashing, but there's no additional information in the pastebin to really help pin down why it's crashing.
You might also consider adding logging statements in your code to see if you can isolate the issue.