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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.
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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.

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