Cannot use ExoPlayer 2.10.0 with Android support libraries

While 2.9.6 allowed use of the Android Support Libraries, 2.10.0 does not, producing an error during project sync:

ERROR: Manifest merger failed : Attribute application@appComponentFactory value=(android.support.v4.app.CoreComponentFactory) from [com.android.support:support-compat:28.0.0] AndroidManifest.xml:22:18-91
	is also present at [androidx.core:core:1.0.0] AndroidManifest.xml:22:18-86 value=(androidx.core.app.CoreComponentFactory).
	Suggestion: add 'tools:replace="android:appComponentFactory"' to <application> element at AndroidManifest.xml:12:5-50:19 to override.

I do not see anywhere in the release notes noting that 2.10.0 requires switching to AndroidX. We’ve tried to switch to AndroidX, but the automated migration tooling fails as per https://stackoverflow.com/questions/53853617/enabling-androidx-causes-cannot-change-strategy-of-configuration-appcompile – and no one has provided a resolution to this.

[JessHolle]

Okay, it is understandable that from ExoPlayer’s perspective this should be closed.

The corresponding bug I filed against the AndroidX migration should remain open, however, as a migration that fails for various build.gradle files with an error that provides no guidance as to how the issue can be addressed is not an acceptable path to AndroidX. There’s a reason the stackoverflow query about this issue remains open – it appears that the AndroidX migration tooling simply can’t handle a good number of perfectly valid build.gradle files.

Also for ExoPlayer there really should be a clear banner in the release notes, noting that this version now requires one to have migrated to AndroidX!

[marcbaechinger]

When I create a new project in Android Studio and I have these dependencies in my gradle file I receive the above error as you report it:

implementation 'com.google.android.exoplayer:exoplayer-core:2.10.0'
implementation 'com.google.android.exoplayer:exoplayer-ui:2.10.0'
implementation 'com.android.support:appcompat-v7:28.0.0'
implementation 'com.android.support.constraint:constraint-layout:1.1.3'

Then I add the following to my gradle.properties

android.enableJetifier=true
android.useAndroidX=true

And I can build and deploy the app after having updated the import statements. I’m not sure if this works with your project as well, as it’s a tiny no-op sample app only.

I found this here: https://developer.android.com/jetpack/androidx and I am using Android Studio 3.4 with the targetSdkVersion and compileSdkVersion set to 28.