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How does one use glide to download an image into a bitmap using Kotlin?
This example demonstrates how to use glide to download an image into a bitmap using Kotlin
Step 1 − Create a new project in Android Studio, go to File ⇒ New Project and fill all required details to create a new project.
Step 2 − Add the following code to res/layout/activity_main.xml.
<?xml version="1.0" encoding="utf-8"?> <RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android" xmlns:tools="http://schemas.android.com/tools" android:layout_width="match_parent" android:layout_height="match_parent" tools:context=".MainActivity"> <ImageView android:id="@+id/imageView" android:layout_width="match_parent" android:layout_height="match_parent" /> </RelativeLayout>
Step 3 − Add the following code to src/MainActivity.kt
import android.graphics.Bitmap
import android.graphics.drawable.Drawable
import android.os.Bundle
import android.widget.ImageView
import androidx.annotation.Nullable
import androidx.appcompat.app.AppCompatActivity
import com.bumptech.glide.Glide
import com.bumptech.glide.request.target.CustomTarget
import com.bumptech.glide.request.transition.Transition;
class MainActivity : AppCompatActivity() {
lateinit var imageView: ImageView
override fun onCreate(savedInstanceState: Bundle?) {
super.onCreate(savedInstanceState)
setContentView(R.layout.activity_main)
title = "KotlinApp"
imageView = findViewById(R.id.imageView)
Glide.with(this).asBitmap().load("https://www.google.es/images/srpr/logo11w.png").into(object : CustomTarget<Bitmap?>() {
override fun onResourceReady(resource: Bitmap, @Nullable transition: Transition<in Bitmap?>?) {
imageView.setImageBitmap(resource)
}
override fun onLoadCleared(@Nullable placeholder: Drawable?) {}
})
}
}Step 4 − Add the following code to androidManifest.xml
<?xml version="1.0" encoding="utf-8"?> <manifest xmlns:android="http://schemas.android.com/apk/res/android" package="com.example.q11"> <application android:allowBackup="true" android:icon="@mipmap/ic_launcher" android:label="@string/app_name" android:roundIcon="@mipmap/ic_launcher_round" android:supportsRtl="true" android:theme="@style/AppTheme"> <activity android:name=".MainActivity"> <intent-filter> <action android:name="android.intent.action.MAIN" /> <category android:name="android.intent.category.LAUNCHER" /> </intent-filter> </activity> </application> </manifest>
Let's try to run your application. I assume you have connected your actual Android Mobile device with your computer. To run the app from android studio, open one of your project's activity files and click the Run icon
from the toolbar. Select your mobile device as an option and then check your mobile device which will display your default screen.
Click here to download the project code.
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