We define a separate class called ImageLoaderGlideModule which extends AppGlideModule(). The annotation @GlideModule on the class enables the app to have access to the GlideApp instance. The GlideApp instance can be used across various activities in our application:

package com.natarajan.imageloader
/**
  * Created by admin on 4/14/2018.
  */
 import com.bumptech.glide.annotation.GlideModule
 import com.bumptech.glide.module.AppGlideModule

@GlideModule
 class ImageLoaderGlideModule : AppGlideModule()

We need to make the following changes in the MainActivity Kotlin class to have the image loaded by Glide and display it when the app is launched.

Similar to Picasso, Glide also has a simple syntax for loading an image from a specified URL:

GlideApp.with(this).load("URL").into(imageView);

The modified MainActivity Kotlin class should look like the one shown here:

package com.natarajan.imageloader
 
 import android.support.v7.app.AppCompatActivity
 import android.os.Bundle
 import kotlinx.android.synthetic.main.activity_main.*
 
 class MainActivity : AppCompatActivity() {
 
    override fun onCreate(savedInstanceState: Bundle?) {
         super.onCreate(savedInstanceState)
         setContentView(R.layout.activity_main)

     if(imageView != null){
                                          
   GlideApp.with(this).load("http://goo.gl/gEgYUd").into(imageView);
       }
    }
 }

We have done all the changes required for Glide—build.gradle, Proguard.rules, and the Kotlin class files. We should see the app load the image from the specified URL and display it in the ImageView as shown: