I am using Intellij Idea rider to develop xamarin projects. Everything worked normally since 2 day ago when a strange error started to appear when trying to run the app in android emulator. I get this strange error : Error running Android Default: Unexpected schema version 3
In the emulators section of the android project run config i see 0 emulators. I have 5 emulators eligible for running the app. Everything is ok with the emulators because i can run the android app using Visual Studio for Mac. I am using Mac OS Sierra. Any ideas?
Probably, a path to Xamarin Android SDK has changed to a wrong one for some reason. You could check this in Settings: "Rider | Preferences | Build, Execution, Deployment | Android". If it is ok, I would contact Rider support team.
It is a bug in Rider. Fixed in Rider 2018.2 (EAP)
https://rider-support.jetbrains.com/hc/en-us/community/posts/360000540970-Error-running-Android-Default-Unexpected-schema-version-3
Related
When I just installed a Visual Studio 2017 and created my Xamarin.Forms application, it ran fine on my Windows 10 PC. However, I then installed some apps from Steam (which is the only thing I can think of that could change system settings). After that, when I try to create another Xamarin.Forms project, it does not deploy well to my machine and gives the following error:
DEP6200: Bootstrapping failed. Device cannot be found.
SmartDeviceException - Deployment failed because no
device was detected. Make sure a device is connected
and powered on. [0x80131500]
Strangely enough, my first app continues to build and run fine, even if I uninstall it from Windows and then deploy it again.
What could be the issue?
I have just noticed that Visual Studio makes ARM the default architecture. Changing it to "Any CPU" brought back the option to run the app on my machine.
I created a vanilla PCL project in xamarin forms. I tried to run on Android and it works fine.
But when I change de target to IOS and select my real device (Ipad with IOS 11.4.1), Visual studio only allows me to build solution, I wanna to run application on it but I can't.
The target IOS is 8.0, and I already authenticated with my apple account and created a provisioning profile.
I already done this on another project before and works fine.
I really don't know why Visual Studio don't allow me to debug, when I open my oldest project with this device it allows me to debug.
What OS are you running Visual Studio on? IOS requires MAC, whereas Android is compatible with all OS. It's been a while, but I know there's an option to wirelessly connect to a MAC OS so that you can run your IOS Xamarin Forms application anywhere.
I found the solution.
I was trying to use "Debug", and it works fine on the emulator, but to real device I need to use "Debug | Iphone" or otherwise it only builds.
Even when I try to use "Release" it's the same trick.
I've just installed Visual Studio on my Mac and started my first Xamarin Forms project. I've clicked "Getting Started" for my HelloWorld, and tried to run in the iOS simulator and got the following error :
the selected execution mode is not supported for .net projects
Could anyone please explain to me why this problem appears and how to open the simulator? Android simulator works just fine.
For those having similar issues, it seems as though the Getting Started doesn’t quite work well on Mac.
Instead of using it to open the simulators, simply right click your project and run from simulator there instead.
I'm working on a multi OS app in Xamarin Forms, for Android and iOS.
Everything's fine with android compilation and deploy, but it's not that easy on iOS.
Visual Studio still deploy the same version again and again, like it's stuck somewhere in past.
Is there a cache to clean somewhere? The iOS app is displaying labels which are no more in my code, so it's probably a cache issue.
I tryied to clean the whole solution, in vain.
I deploy on a macOS virtual machine, hosted with VMware workstation. VS and xcode are installed on it.
There is an example of same page displayed in ios and android..
I am having issue debugging Android project. I can deploy to device and run it, all works fine but if I try to debug, the app gets deployed to the device and very briefly opened, splash screen shows up but the app then closes.
I am using Xamarin Forms on Visual Studio 2015.
Device is running Android Oreo (8.0.0). Another device running Android 6.0.1 is debugging fine.
The output shows following:
InspectorDebugSession(11): StateChange: Start -> EntryPointBreakpointRegistered
InspectorDebugSession(11): Constructed
Android application is debugging.
InspectorDebugSession(11): HandleTargetEvent: TargetExited
InspectorDebugSession(11): Disposed
Couldn't connect to logcat, GetProcessId returned: 0
I checked Logcat and it seem to be having issues finding FFImageLoading library:
Time Device Name Type PID Tag Message
09-18 14:35:52.361 Huawei Nexus 6P Debug 1560 Mono AOT:
image '/usr/local/lib/mono/aot-cache/arm/FFImageLoading.Platform.dll.so'
not found: dlopen failed: library "/data/app/myapp.android.dev-
WEb1bz8edgF7vwx6uCoZ-A==/lib/arm/libaot-FFImageLoading.Platform.dll.so" not found
I have added Nuget package for FFImageLoading to my projects and Droid project references show it as in image below:
This worked for me :-
Deselecting the 'Use Shared Runtime' in Project Properties > Android
Options > Packaging properties
I also had this issue with Android 8.1 and Visual Studio 2017 15.7.4.
There are three steps to got it working again.
Under Android Options, go to Advanced and add your device architecture, in my case it was x86_64.
Go to Tools -> Options -> Xamarin > Android Settings and enable: Provide debug symbols for shared runtime and base class libraries.
And the final step is to delete following Apps from your device:
All Xamarin.Android API Support libraries
Mono Shared Runtime
Your App
After these steps you don't need to disable "Use Shared Runtime" and can Deploy and Debug much faster.
This is a known issue with Oreo and Xamarin Android on Visual Studio for Windows. It works on Visual Studio for Mac apparently. It will be fixed in an upcoming release. In the mean time there is a work around down near the bottom of the bug link above (comment 20).
deselecting 'Use Shared Runtime' in Project Properties > Android Options
delete bin & obj files from solution
clean solution
rebuild the solution it works
One another reason for that is if you dont enable usb debugging on your device, VS 2017 still recognizes your phone and installs the app on your phone. Just after debugging starts, it will throw this error and not continue debugging. Make sure to enable Developer Mode -> Usb debugging like described here
https://learn.microsoft.com/en-us/xamarin/android/get-started/installation/set-up-device-for-development