Android Loading Image from URL (HTTP)

https://www.androidhive.info/2012/07/android-loading-image-from-url-http/

I am writing this tutorial as lot of people are asking me about loading an image into imageview. Just by adding url to ImageView won’t load directly. Instead we need to store the image into cache (temporary location) and attach to ImageView. This can be achieved just by calling couple of lines and don’t forget to add required classes to your project.

1. Create a new project in Eclipse IDE by navigating to File ⇒ New ⇒ Android Project and fill the required details.
2. Inorder to load images from an url we first need to store the image in a temporary location and once it is downloaded it should be added to ImageView. To create a temporary file we need to access device external storage. Add required permission to AndroidManifest.xml file.

To access internet required permission is – INTERNET
To access external storage required permission is – WRITE_EXTERNAL_STORAGE

AndroidManifest.xml

<?xml version="1.0" encoding="utf-8"?> <manifest xmlns:android="http://schemas.android.com/apk/res/android"     package="com.androidhive.imagefromurl"     android:versionCode="1"     android:versionName="1.0" >       <uses-sdk android:minSdkVersion="8" />       <application         android:icon="@drawable/ic_launcher"         android:label="@string/app_name" >         <activity             android:name=".AndroidLoadImageFromURLActivity"             android:label="@string/app_name" >             <intent-filter>                 <action android:name="android.intent.action.MAIN" />                   <category android:name="android.intent.category.LAUNCHER" />             </intent-filter>         </activity>     </application>           <!-- Internet Permissions -->     <uses-permission android:name="android.permission.INTERNET" />           <!-- Permission to write to external storage -->     <uses-permission android:name="android.permission.WRITE_EXTERNAL_STORAGE" />   </manifest>

3. For testing purpose create a simple ImageView in your main.xml file

main.xml

<?xml version="1.0" encoding="utf-8"?> <LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"     android:layout_width="fill_parent"     android:layout_height="fill_parent"     android:orientation="vertical" >       <TextView         android:layout_width="fill_parent"         android:layout_height="wrap_content"         android:text="Loading image from url"         android:layout_margin="10dip" />           <ImageView android:id="@+id/image"         android:layout_height="wrap_content"         android:layout_width="fill_parent"         android:layout_margin="10dip"/>   </LinearLayout>

4. Open your main activity and type the following code. Whenever you wan’t to show an image from url just call the following code.

imgLoader.DisplayImage(image_url, loader, image); // image_url - is image url path // loader - loader image, will be shown before loading image // image - is ImageView

AndroidLoadImageFromURLActivity.java

package com.androidhive.imagefromurl;   import android.app.Activity; import android.os.Bundle; import android.widget.ImageView;   public class AndroidLoadImageFromURLActivity extends Activity {     @Override     public void onCreate(Bundle savedInstanceState) {         super.onCreate(savedInstanceState);         setContentView(R.layout.main);                   // Loader image - will be shown before loading image         int loader = R.drawable.loader;                   // Imageview to show         ImageView image = (ImageView) findViewById(R.id.image);                   // Image url         String image_url = "https://api.androidhive.info/images/sample.jpg";                   // ImageLoader class instance         ImageLoader imgLoader = new ImageLoader(getApplicationContext());                   // whenever you want to load an image from url         // call DisplayImage function         // url - image url to load         // loader - loader image, will be displayed before getting image         // image - ImageView         imgLoader.DisplayImage(image_url, loader, image);     } }

5. Add following classes in your project and run the project.