I installed Android Studio, imported a project and started debugging. All was ok until suddenly I started the debugger and got ClassNotFoundException for the launch of the main Activity. The strange thing is that if I run the project or I debug it with a virtual device all is fine. Only the device give this problem.
Do you have any suggestion?
Thanks
I ran into this. My app had been running fine and one day it just started running into these ClassNotFoundExceptions. My code hadn't changed at all.
As far as I can tell, it ended up being a bug in the build of Android Studio. I had recently updated to the latest release on the canary channel.
Switching back to an older release on the dev channel got things working again:
Go into Settings / IDE Settings / Update
Change to Dev Channel and Check Now.
Related
I was able to debug my Xamarin.iOS app on my physical device and simulators just fine until this morning. I think it has something to do with the recent iOS update. When I try to deploy to my physical device (iPad) I get this message now:
error HE0003: Could not load the framework 'IBFoundation' (path:
/Applications/Xcode.app/Contents/Frameworks/IBFoundation.framework/IBFoundation):
not found.
And I can't deploy on any simulator anymore, I get this message
Lower the deployment target to see older simulators or check you Apple
SDK path
I didn't have these problems yesterday and I've been working on my app for months without this problem. I updated Visual Studio, Xcode, and my Mac, but these problems still persist. Any idea how to fix?
It is a known issue that you can follow here: https://github.com/xamarin/xamarin-macios/issues/12778
Also there are few workarounds that work mentioned in the issue.
With my project upon running UI Tests I get POST Failed error. I can't figure what is the cause of the problem. UITests Post Failed in Xamarin.forms, related to the same issue did not help.
On an actual device I get Instrumentation backend app installed (it runs as a server for UI Tests). But I am still getting POST Failed error.
How to fix this issue?
The problem is related to the Android OS version.
Instrumentation backend application does not work properly on new android os-es.
I created a simulator with older Android OS (Android 6.0 Marshmallow).
And ran UITests with this simulator selected in Visual Studio.
And all things worked.
Hope it will help someone who struggles with the same issue.
Old school things are better than new ones.
I am developing a Xamarin App for Android and iOS on windows. For iOS compiling, I pair with a Mac Mini.
I was forced to update MacOS, XCode, VisualStudio for Mac and therefore Xamarin. On Windows I also updated from Visual Studio 2015 to 2017.
After the updates, Android version works still fine.
The iOS App pairs, compiles and provisions successfully, but whe the App starts (either on simulator or real device), it shows the launch screen and after a few seconds quits back to home screen. It even says "successfully launched" but then terminates
The only logs I get are:
"The app has been terminated" -> on windows, in Debug Window
"Service exited due to SIGABRT" -> on mac, in simulator log file
I searched the web and tried lots of stuff:
Delete obj and bin folders
Clean, Rebuild, Restart VS, Restart Mac, Restart PC, Restart....
Deleted all Provisioning Files and Certificates, recreated them
Used Automatic provisioning, used Manual provisioning
Debug and Release Configuration
iPhone Simulator and Real Device
Sadly nothing worked and I cannot get more info why this happens.
Does somebody have or had the same issue and found a solution? Do you have suggestion what more I can try?
I would really appreciate any help.
Thanks
Edit:
As requested, a Screeshot of my build properties:
I am having the same issue. Restarting the device seems to be the only thing that works, but it's unreasonable to have to restart the device every time I want to run the debugger.
So I finally solved the problem...
I created a new iOS-Project from scratch, added the existing Xamarin.Forms project and copied the files from the original iOS project one by one. I also downgraded all firebase plugins from 5.x versions to the highest 4.x versions and xamarin forms from 3.x to 2.5.x and now the app runs in the simulator and bundle signing works also.
Thanks for your help, I hope my answer will help anyone with similar issues
When I build my project in debug mode it builds forever. However there is no problem building in release mode.
This problem first occurred when I updated visual studio for mac to the newest version:
Preview 6 (7.0 build 2740).
This is what my debug settings look like:
Any ideas are much appreciated.
Check for xamarin.forms updates in both in the ios and xamarin project. It could be that theese are not updated even though the solution is updated.
Xamarin.forms package under the iOS project might have an older version
I cannot really help you because I don't know what type of project you tried to run or which OS X you are working with.
If such an Error occurs, always check your code or try restarting your mac.
Tip: "Visual Studio for Mac Preview" is still in its Alpha. Use the Stable Update channel to avoid errors like this.
I am developing monodroid application and everything seems to be working fine [I was able to run the android project before] till one fine day and suddenly I got this error message while running the android application from VS2010.
Than I downloaded the monodroid installer from here http://go-mono.com/monodroid-download/
and when I tried to run it I am getting the below error
I am confused. How to resolve this error?
MonoDroid isn't free, you need to license it. Sounds like the license expired.