Unresolved reference: GlideApp in activity written in Kotlin

For those like me who had used kapt as suggested by karandeep but still had the problem - you have to create an AppGlideModule implementation:

// AppGlideModule.kt import com.bumptech.glide.annotation.GlideModule import com.bumptech.glide.module.AppGlideModule @GlideModule class AppGlideModule : AppGlideModule() 

After rebuilding the project GlideApp can be imported (generated code).

More at this medium post

whoever still facing issue after extending AppGlideModule and adding

kapt 'com.github.bumptech.glide:compiler:4.8.0'

then don't forget to include

apply plugin: 'kotlin-kapt'

on top in app or module build.gradle

You could use Glide instead of GlideApp.

Glide.with(context) .load(image) .apply(RequestOptions().placeholder(R.drawable.image_placeholder)) .into(imageView); 

To add Glide app you need to add:

implementation 'com.github.bumptech.glide:glide:4.8.0' 

Then you can use

Glide.with(..)

That code uses default Glide. If you want to have customized Glide, you will need to add

for kotlin:

kapt 'com.github.bumptech.glide:annotations:4.9.0' 

or for java:

annotationProcessor 'com.github.bumptech.glide:annotations:4.9.0' 

Once when you Sync the project, you need to add Glide module class in your project:

@GlideModule public class CustomGlideModule extends AppGlideModule { @Override public void registerComponents(@NonNull Context context, @NonNull Glide glide, @NonNull Registry registry) { //register some components } } 

Once when you rebuild the project, new class GlideApp will be autogenerated. You can now use Glide with the following code:

GlideApp.with(..)