android application with testOnly option set to true can't be deployed

[prostopsih]

Description

This is error that I get:
ADB0010: Mono.AndroidTools.InstallFailedException: Failure [INSTALL_FAILED_TEST_ONLY: installPackageLI]...

https://stackoverflow.com/questions/62162640/xamarin-android-install-flags
There is same problem with xamarin.forms

Steps to Reproduce

1. Create new dotnet maui application
2. Set android:testOnly="true" property on application tag in android manifest
3. Try to debug application

Link to public reproduction project repository

https://github.com/prostopsih/Android-TestOnly-Bug-Repro

Version with bug

7.0 (current)

Last version that worked well

Unknown/Other

Affected platforms

Android

Affected platform versions

Android 9, 12, 13

Did you find any workaround?

deploy manually using following command:
adb install -t {apkFilePath}

The problem is that I can't debug my application after installing it in such way.

In android studio testOnly is set to true by default and also there is a possibility to add extra parameters on install command.

Relevant log output

No response

[jsuarezruiz]

cc @jonathanpeppers

[jonathanpeppers]

@prostopsih can you describe a bit why you want to use android:testOnly="true"? To understand the use-case.

What does it do for you?

[prostopsih]

I develop a kiosk application and granting device owner access to my application via this command:
adb shell dpm set-device-owner {packageName}/{adminReceiverClassName}
But to remove it with this command:
adb shell dpm remove-active-admin {packageName}/{adminReceiverClassName}
I need application to be installed as testOnly
Otherwise I need to reinstall firmware of my device

We've moved this issue to the Backlog milestone. This means that it is not going to be worked on for the coming release. We will reassess the backlog following the current release and consider this item at that time. To learn more about our issue management process and to have better expectation regarding different types of issues you can read our Triage Process.

[jonathanpeppers]

@dellis1972 do you know if there is some MSBuild property that would allow passing -t to adb install commands?

[dellis1972]

@jonathanpeppers not of the top of my head. I guess we'd need to add an argument to androidtools to allow us to do that.
It should probably also autodetect the testOnly attribute in the manifest and turn that on if its true.