How to get a bitmap from Url in Android app

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How to get a bitmap from Url in Android app

 This example demonstrates how do I get a bitmap from Url in android app.

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:tools="http://schemas.android.com/tools"

   android:layout_width="match_parent"

   android:layout_height="match_parent"

   android:padding="8dp"

   android:orientation="vertical"

   tools:context=".MainActivity">

   <LinearLayout

      android:layout_width="wrap_content"

      android:layout_height="wrap_content"

      android:orientation="vertical"

      android:layout_gravity="center">

      <ImageView

         android:layout_width="150dp"

         android:layout_height="150dp"

         android:layout_gravity="center"

         android:layout_margin="15dp"

         android:src="@drawable/image"/>

   </LinearLayout>

   <ImageView

      android:id="@+id/iMageView"

      android:layout_width="match_parent"

      android:layout_height="match_parent"

      android:layout_gravity="center"

      android:layout_margin="20sp"/>

</LinearLayout>

Step 3 – Copy and paste an image (.png/.jpg/.jpeg) into res/drawable


Step 4 − Add the following code to src/MainActivity.java

public class MainActivity extends AppCompatActivity {

   Bitmap bitmap;

   ImageView image;

   String urlImage = "https://thumbs.dreamstime.com/z/hands-holding-blue-earth-cloud-sky" + "-elements-imag-background-image-furnished-nasa-61052787.jpg";

   @Override

   protected void onCreate(Bundle savedInstanceState) {

      super.onCreate(savedInstanceState);

      setContentView(R.layout.activity_main);

      image = findViewById(R.id.iMageView);

      new GetImageFromUrl(image).execute(urlImage);

   }

   public class GetImageFromUrl extends AsyncTask<String, Void, Bitmap>{

      ImageView imageView;

      public GetImageFromUrl(ImageView img){

         this.imageView = img;

      }

      @Override

      protected Bitmap doInBackground(String... url) {

         String stringUrl = url[0];

         bitmap = null;

         InputStream inputStream;

         try {

            inputStream = new java.net.URL(stringUrl).openStream();

            bitmap = BitmapFactory.decodeStream(inputStream);

         } catch (IOException e) {

            e.printStackTrace();

         }

         return bitmap;

      }

      @Override

      protected void onPostExecute(Bitmap bitmap){

         super.onPostExecute(bitmap);

         imageView.setImageBitmap(bitmap);

      }      

   }

}

Step 5 - 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="app.com.sample">

   <uses-permission android:name="android.permission.INTERNET"/>

   <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 Play Icon  icon from the toolbar. Select your mobile device as an option and then check your mobile device which will display your default screen

How to get a bitmap from Url in Android app


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