For now I temporarily added the below so that there is no longer a compilation error:

// TODO remove temporary fix for Glide compiler issue
// Temporary fix begin
implementation 'com.android.support:support-annotations:27.1.1'
annotationProcessor 'com.android.support:support-annotations:27.1.1'
// Temporary fix end

Temporary fix not working for me with android databinding enabled.

@Rajeshr34 Hey there, are you using AndroidX? Please post your error as well

@KevinLeigh Same annotation errors.... also tried to make change and build but its not worked for me. is there any solution for this?

@Rajeshr34
It works fine on my side, please see below the project setup that I am using.

I am using Glide 4.8.0-SNAPSHOT for both annotation processor library and core library. I am using Android Studio IDE 3.3 Canary build Version 2 with Gradle version 4.8, as well as Gradle build tools 3.3.0-alpha02. I would not recommend this setup for a project that is in production that should use only stable versions of libraries. This current setup is only for trying out certain features that are not yet available in stable releases.

@Rajeshr34

Another thing is you should always clean rebuild your project correctly when making major updates.

The reason the temporary fix should work is because android.support.annotation does not exist when you update to use androidx.annotation, and Glide compiler is currently using both namespaces to generate classes. So importing older namespace android.support.annotation will include the missing namespace that no longer exists when using androidx.annotation, so your project should now have both namespaces.

@KevinLeigh Thank You. its working now

implementation 'com.github.bumptech.glide:glide:4.8.0-SNAPSHOT'
annotationProcessor 'com.github.bumptech.glide:compiler:4.8.0-SNAPSHOT'
implementation 'com.github.bumptech.glide:okhttp3-integration:4.8.0-SNAPSHOT@aar'
implementation "com.android.support:support-annotations:28.0.0-alpha3"
annotationProcessor 'com.android.support:support-annotations:28.0.0-alpha3'

@Rajeshr34 All good, glad it is working on your side.

Hi,
The solution sounds good, but when will be the 4.8.0-SNAPSHOT version available?

@kerjani 4.8.0-SNAPSHOT is out

allprojects {
    repositories {
        google()
        jcenter()
        
        /*glide snapshot repo*/
        maven {
            name 'glide-snapshot'
            url 'http://oss.sonatype.org/content/repositories/snapshots'
        }

        //Image Gallery
        maven { url "https://jitpack.io" }
    }
}

@Rajeshr34 is it working for you? here it's still using damn android.support.annotation package rather than android.xannotation

4.8.0-SNAPSHOT works for me

I solved this by normally using stable version 4.7.1, and added files Nullable.java and CheckResult.java into my project from Android SDK sources (into correct path android\support\annotation). Then Glide finds its annotation classed, and it works, while my app uses AndroidX.