I have an Azure pipeline which has been building my MAUI app fine but a few weeks ago a problem occured. After the app is built and deployed for user download (in a custom online location, not the Google Play store), I try to install it manually on my few phones and every time it just says "Application cannot be installed", without any specific error details.
Interestingly enough, when I 'run dotnet build MyApp.sln -c Release' on my local machine, in the source folder, it builds the app just fine and I can then install it on all the phones without problems.
I have tried adding a signing step in the Azure pipeline and it seems to be working but the output apk still won't install on phones.
The YAML code I added for signing the app (which didn't help):
- task: AndroidSigning@3
displayName: 'Signing and aligning APK file(s) **/*.apk'
inputs:
apkFiles: '**/*.apk'
apksign: true
apksignerKeystoreFile: myappkey.keystore
apksignerKeystorePassword: mypass
apksignerKeystoreAlias: myappkey
apksignerKeyPassword: mypass
Any idea what I might be missing?
Turns out I was looking for the solution in the wrong place as it wasn't a problem with the YAML config.
I installed the app using android-adb to be able to see the logs and the exact error message. It turned out that I was trying to install a build generated by a different source (Azure instead of local machine) and needed to manually uninstall the old app first for that (Android won't do it automatically).
If I keep installing new versions of the app built on the same machine, I don't get the error anymore.