All com.android.support libraries must use the exact same version specification

Question

After updating to android studio 2.3 I got this error message. I know it\'s just a hint as the app run normally but it\'s really strange.

All com.andr

Answer 1

Use variables: Doing something like the following will make it easier for you to ensure that you use the same version with all libraries

dependencies {

    ext {
        support_library_version = '25.2.0'
        google_play_services_version = '10.2.0'
    }

    //#####################################################################
    //          Support Library
    //#####################################################################
    compile "com.android.support:appcompat-v7:${support_library_version}"
    compile "com.android.support:palette-v7:${support_library_version}"
    compile "com.android.support:design:${support_library_version}"

    //#####################################################################
    //          Google Play Services
    //#####################################################################
    compile "com.google.android.gms:play-services-auth:${google_play_services_version}"
    compile "com.google.android.gms:play-services-ads:${google_play_services_version}"
    compile "com.google.android.gms:play-services-analytics:${google_play_services_version}"

    //#####################################################################
    //          Firebase
    //#####################################################################
    compile "com.google.firebase:firebase-core:${google_play_services_version}"
    compile "com.google.firebase:firebase-auth:${google_play_services_version}"
    compile "com.google.firebase:firebase-messaging:${google_play_services_version}"

More information on how Google suggests that you handle this versioning can be found in this article: https://developer.android.com/studio/build/index.html#top-level