Gradle config does not exist after Android Studio update. Project fails to build.

[apptrash]

After updating android studio, when building, the following message is shown:

Build file '/home/alex/Разработка/src/android-git/exoplayer/extensions/av1/build.gradle' line: 14

A problem occurred evaluating project ':exoplayer-extension-av1'.
> Could not read script '/home/alex/.gradle/daemon/exoplayer/common_library_config.gradle' as it does not exist.

I'm using ExoPlayer r2.12.1

Here is a project structure (among others):

cgc.launcher/settings.gradle
exoplayer/

Here is cgc.launcher/settings.gradle content:

include ':app'

gradle.ext.exoplayerRoot = '../exoplayer'
gradle.ext.exoplayerModulePrefix = 'exoplayer-'
apply from: new File(gradle.ext.exoplayerRoot, 'core_settings.gradle')

Also, from cgc.launcher/app/build.gradle:

...
implementation project(':exoplayer-library')
implementation project(':exoplayer-extension-ffmpeg')
implementation project(':exoplayer-extension-rtmp')
implementation project(':exoplayer-extension-okhttp')
...

Here is information about Android Studio:

Android Studio 4.2
Build #AI-202.7660.26.42.7322048, built on April 29, 2021
Runtime version: 11.0.8+0-b944-P17168821 amd64
VM: OpenJDK 64-Bit Server VM by N/A
Linux 5.11.0-16-generic
GC: G1 Young Generation, G1 Old Generation
Memory: 2048M
Cores: 4
Registry: external.system.auto.import.disabled=true
Non-Bundled Plugins: org.jetbrains.kotlin
Current Desktop: ubuntu:GNOME

I will provide more information if required. What can I do to fix the problem?

[apptrash]

Rolled back the version to

Android Studio 4.1.3
Build #AI-201.8743.12.41.7199119, built on March 11, 2021
Runtime version: 1.8.0_242-release-1644-b3-6222593 amd64
VM: OpenJDK 64-Bit Server VM by JetBrains s.r.o
Linux 5.11.0-16-generic
GC: ParNew, ConcurrentMarkSweep
Memory: 2014M
Cores: 4
Registry: ide.new.welcome.screen.force=true, external.system.auto.import.disabled=true
Current Desktop: ubuntu:GNOME

Everything is OK on this version

[alex3d]

The problem is as of Android Studio 4.2 gradle.ext.exoplayerRoot should be set to an absolute path. This probably could be mentioned in exoplayer readme.

Android Studio 4.2 is bundled with JDK 11 instead of JDK 8 in previous versions, and see gradle/gradle#8286 (comment)

[Samrobbo]

Hi @apptrash, it looks like alex3d has given you a possible solution, did it work?

You could also try updating to the latest ExoPlayer release and see what effect that has.

[apptrash]

@Samrobbo, hi! Yeah, it does help. But now everyone who involved in project should set this path manually

[Samrobbo]

There may be an alternate way to do this, but I don't think it's specific to ExoPlayer. You might find some success asking a similar question on StackOverflow or in a gradle forum.

[apptrash]

Okay, I'll ask a similar question and write here what I found out.

[apptrash]

"${rootProject.projectDir}/../exoplayer" works fine for me

[S0und]

To be more specific
in your settings.gradle

Change this:
gradle.ext.exoplayerRoot = '$rootDir/../../ExoPlayer'

to this:

gradle.ext.exoplayerRoot = "${rootProject.projectDir}/../ExoPlayer"

Obviously the initial path can be different, but the end of the day it has to correctly point to common_library_config.gradle which is in the root of the /ExoPlayer/ folder

[icbaker]

After changing the README instructions above to require an absolute path, I took another look to see if we could remove that requirement.

I worked out the problem comes when constructing a File object from the exoplayerRoot string. Gradle says we can't call new File with a relative path, we have to use their Project.file method:
https://docs.gradle.org/current/userguide/working_with_files.html#sec:single_file_paths

And indeed I can use that to fix the problem by editing core_settings.gradle.

I've sent a change to make this fix - it will appear below when it's merged and should be included in 2.14.1 (but if people are depending on ExoPlayer locally they can of course apply the patch directly).