A Missing Method Exception
USMember ✭
A created a new Xamarin Forms project for Android project and changed nothing. And when i debug it in a android simulator, the app get an error before entering onCreate method. I checked the stack trace:
Original Exception: at char.ToUpperInvariant (char)
at MonoDroid.Utils.JniType.ToPascalCase (string,int)
at MonoDroid.Utils.JniType.ToCliTypePart (string)
at MonoDroid.Utils.JniType.ToCliType (string)
at Java.Interop.TypeManager.CreateInstance (intptr,Android.Runtime.JniHandleOwnership,System.Type)
at Java.Lang.Object.GetObject (intptr,Android.Runtime.JniHandleOwnership,System.Type)
and i checked the innerException, it writes: An exception was thrown by the type initializer for System.Globalization.CultureInfo
and its innerException says : An exception was thrown by the type initializer for System.Globalization.TextInfo"
and then says: "Attempted to access a missing method." it is a MissingMethodException.
I am using Xamarin for Visual Studio 3.11.450 and the version for Xamarin.Android is 5.1.0.115
Did any body get the same problem? I need you help!
Answers
Does anybody know it? Help!
This is in F#, correct?
No, it is in C#
HI,
Same here, no chance to get anything running.
Any solution for this ?
Greetings,
Caipigott
Is there a sample solution that shows this error?
We need to see the code to be able to help. Also is this in a PCL? You might be trying to access a method that is not supported in Portable Class Libraries.
Hi,
thanks for your reply.
Unbelievable, today i received a notice on opening VS to update Xamarin and now, with this version, it works. I did nothing else than what i did befor - creating a new android app and start.
Well, now it works.
Best greetings,
caipigott
I'm getting the same error with Vis Studio new blank solution out of the box., i.e. i've not wrritten any code myself yet
0-03 22:19:41.822 W/ (23760): cant resolve internal call to "System.String::InternalSetLength(int)" (tested without signature also)
10-03 22:19:41.822 E/mono (23760):
10-03 22:19:41.822 E/mono (23760): Your mono runtime and class libraries are out of sync.
10-03 22:19:41.822 E/mono (23760): The out of sync library is: mscorlib.dll
10-03 22:19:41.822 E/mono (23760):
10-03 22:19:41.822 E/mono (23760): When you update one from svn you need to update, compile and install
10-03 22:19:41.822 E/mono (23760): the other too.
10-03 22:19:41.822 E/mono (23760): Do not report this as a bug unless you're sure you have updated correctly:
10-03 22:19:41.822 E/mono (23760): you probably have a broken mono install.
10-03 22:19:41.822 E/mono (23760): If you see other errors or faults after this message they are probably related
10-03 22:19:41.822 E/mono (23760): and you need to fix your mono install first.
10-03 22:19:41.822 W/ (23760): cant resolve internal call to "System.String::InternalSetLength(int)" (tested without signature also)
10-03 22:19:41.822 E/mono (23760):
10-03 22:19:41.822 E/mono (23760): Your mono runtime and class libraries are out of sync.
10-03 22:19:41.822 E/mono (23760): The out of sync library is: mscorlib.dll
10-03 22:19:41.822 E/mono (23760):
10-03 22:19:41.822 E/mono (23760): When you update one from svn you need to update, compile and install
10-03 22:19:41.822 E/mono (23760): the other too.
10-03 22:19:41.822 E/mono (23760): Do not report this as a bug unless you're sure you have updated correctly:
10-03 22:19:41.822 E/mono (23760): you probably have a broken mono install.
10-03 22:19:41.822 E/mono (23760): If you see other errors or faults after this message they are probably related
10-03 22:19:41.822 E/mono (23760): and you need to fix your mono install first.
10-03 22:19:41.822 E/mono (23760):
10-03 22:19:41.822 E/mono (23760): Unhandled Exception:
10-03 22:19:41.822 E/mono (23760): Nested exception detected.
10-03 22:19:41.822 E/mono (23760): Original Exception: at char.ToUpperInvariant (char) <0x0000f>
10-03 22:19:41.822 E/mono (23760): at MonoDroid.Utils.JniType.ToPascalCase (string,int) <0x00043>
10-03 22:19:41.822 E/mono (23760): at MonoDroid.Utils.JniType.ToCliTypePart (string) <0x0002f>
10-03 22:19:41.822 E/mono (23760): at MonoDroid.Utils.JniType.ToCliType (string) <0x0009f>
10-03 22:19:41.822 E/mono (23760): at Java.Interop.TypeManager.CreateInstance (intptr,Android.Runtime.JniHandleOwnership,System.Type) <0x001f7>
10-03 22:19:41.822 E/mono (23760): at Java.Lang.Object.GetObject (intptr,Android.Runtime.JniHandleOwnership,System.Type) <0x002cf>
10-03 22:19:41.822 E/mono (23760): at Java.Lang.Object._GetObject<Java.Lang.Thread/IUncaughtExceptionHandler> (intptr,Android.Runtime.JniHandleOwnership) <0x0004f>
10-03 22:19:41.822 E/mono (23760): at Java.Lang.Object.GetObject<Java.Lang.Thread/IUncaughtExceptionHandler> (intptr,Android.Runtime.JniHandleOwnership) <0x0002b>
10-03 22:19:41.822 E/mono (23760): at Java.Lang.Thread.get_DefaultUncaughtExceptionHandler () <0x0007b>
10-03 22:19:41.822 E/mono (23760): at Android.Runtime.JNIEnv.Initialize (Android.Runtime.JnienvInitializeArgs*) <0x009b7>
Same comment as here: https://forums.xamarin.com/discussion/4731/problem-with-release
This fixed it for me following Xamarin Studio updates on OS X - your mileage may vary!
1. In Xamarin Studio - Clean solution
2. In emulator - Settings -> Apps -> Uninstall "Mono Shared Runtime", "Xamarin.Android API-* Support", "Xamarin.*.SmokeTests",
3. Reboot entire machine (old Windows habit following new software install)
4. Start Xamarin Studio
5. Start emulator
6. Rebuild
7. Debug to emulator
If I had to guess, it was step 2 that got rid of a prior version of the Mono Shared Runtime and resolved the "Your mono runtime and class libraries are out of sync" error.
New rule of thumb - Every time you update anything related to your tooling(xamarin, sdk, etc.) follow the above steps
Also you could go (Visual Studio Mac anyway) to Tools --> Google Emulator Manager. Click on the AVD you are trying to use (possibly Android_Accelerated_x86) and click the "Start" button. Be sure to check the "Wipe user data" checkbox.
This should launch a fresh emulator for you.