CLI does not handle deleted files from App_Resources/Android/src

[vmutafov]

If a user adds some Java/Kotlin files in the App_Resources/Android/src folder and runs a build, the files are copied into the platforms/android/app/src folder.
If the user, however, deletes some file in App_Resources/Android/src and triggers a second build, this does not change the state of the platforms/android/app/src directory.

Issue seems to be due to this logic: https://github.com/NativeScript/nativescript-cli/blob/master/lib/services/android-project-service.ts#L294

The whole implementation of the prepareAppResources method could probably be improved with setting an additional value provided to srcDir in the build.gradle

sourceSets {
    main {
        java {
            srcDir 'src/src'
        }
    }
}

As for the libs folder, it's probably a good idea to attach it as an implementation filetree(<libs_path>) in the dependencies block in the build.gradle

[rosen-vladimirov]

Indeed the issue is caused by the way CLI works with the src dir.
There are various ways to reproduce the problem:

1. Create new project: tns create appValuesIssue --js
2. Open the newly created project and in appValuesIssue/app/App_Resources/Android/src/main/res/values-v21/ create a dimens.xml file with the following content:

<?xml version="1.0" encoding="utf-8"?>
<resources>
    <dimen name="dimension16p">16dp</dimen>
</resources>

3. Build the project: tns build android
4. Check the appValuesIssue/platforms/android/app/src/main/res/values-v21/ dir - the dimens.xml file will be there.
5. Now delete the dimens.xml file from appValuesIssue/app/App_Resources/Android/src/main/res/values-v21/.
6. Build the project again: tns build android
7. Check the appValuesIssue/platforms/android/app/src/main/res/values-v21/ dir - the dimens.xml file will still be there.

NOTE: This will not happen in case you create a new file inside one of the drawable- directories, but it will happen in case you add new drawable- directory and remove it after the first build.