How do I load an ImageView by URL on Android?

This example demonstrates how to load an ImageView by URL in android.

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"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
   xmlns:app="http://schemas.android.com/apk/res-auto"
   xmlns:tools="http://schemas.android.com/tools"
   android:layout_width="match_parent"
   android:layout_height="match_parent"
   android:layout_margin="16dp"
   android:orientation="vertical"
   tools:context=".MainActivity">
   <TextView
      android:layout_width="wrap_content"
      android:layout_height="wrap_content"
      android:text="Load Image From URL in Android ImageView"
      android:textSize="20sp" />
   <ImageView
      android:id="@+id/image_view"
      android:layout_width="fill_parent"
      android:layout_height="300dp"
      android:layout_marginTop="16dp" />
   <TextView
      android:layout_width="fill_parent"
      android:layout_height="match_parent"
      android:text="ViralAndroid.com"
      android:textSize="24sp"
      android:gravity="center|bottom"
      android:textStyle="bold" />
</LinearLayout>

Step 3 − Add the following code to src/MainActivity.java

package com.example.sample;
import android.graphics.Bitmap;
import android.graphics.BitmapFactory;
import android.os.AsyncTask;
import android.os.Bundle;
import android.support.v7.app.AppCompatActivity;
import android.util.Log;
import android.widget.ImageView;
import android.widget.Toast;
import java.io.InputStream;
public class MainActivity extends AppCompatActivity {
   @Override
   protected void onCreate(Bundle savedInstanceState) {
      super.onCreate(savedInstanceState);
      setContentView(R.layout.activity_main);
      // Image link from internet
      new DownloadImageFromInternet((ImageView) findViewById(R.id.image_view)).execute("https://pbs.twimg.com/profile_images/630285593268752384/iD1MkFQ0.png");
   }
   private class DownloadImageFromInternet extends AsyncTask<String, Void, Bitmap> {
      ImageView imageView;
      public DownloadImageFromInternet(ImageView imageView) {
         this.imageView=imageView;
         Toast.makeText(getApplicationContext(), "Please wait, it may take a few minute...",Toast.LENGTH_SHORT).show();
      }
      protected Bitmap doInBackground(String... urls) {
         String imageURL=urls[0];
         Bitmap bimage=null;
         try {
            InputStream in=new java.net.URL(imageURL).openStream();
            bimage=BitmapFactory.decodeStream(in);
         } catch (Exception e) {
            Log.e("Error Message", e.getMessage());
            e.printStackTrace();
         }
         return bimage;
      }
      protected void onPostExecute(Bitmap result) {
         imageView.setImageBitmap(result);
      }
   }
}

Step 4 − Add the following code to res/values/strings.xml

<resources>
   <string name="app_name">Sample</string>
   <string name="hello_world">Hello world!</string>
   <string name="action_settings">Settings</string>
</resources>

Step 5 − Add internet permission in AndroidManifest.xml

<?xml version="1.0" encoding="utf-8"?>
<manifest xmlns:android="http://schemas.android.com/apk/res/android" package="com.example.sample">
   <uses-permission android:name="android.permission.INTERNET"></uses-permission>
   <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 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

Azhar

Published on 30-Aug-2019 11:20:18