In this example we’ll show you how to use Universal Image Loader library in your android project.
What is Universal Image Loader?
Universal Image Loader is an smart and powerful library that helps in loading, caching and displaying images on Android. This means, using this library you can download remote images and display on ImageView.
Universal Image Loader Features
- Asynchronous and multi-threaded image loading. This allows you to download multiple images Asynchronously.
- Supports various configurations that helps to tune for your requirement. With this you can control memory, cache type, decoder, display image options, etc.
- Possibility of image caching in memory and/or on device’s file system (or SD card)
- Possibility to “listen” loading process. Allows various callback methods using which you will get to know the progress/state of your download request.
Integrating Universal Image Loader in Android
Integrating this library is quite easy. Here we’ll show you steps to download and integrate this library in Android application.
1. Download Universal Image Loader
Download Universal Image Loader JAR and put the JAR in the libs folder of your Android project. You can also fork the library on GitHub
2. Mainfest permissions
Add below required permission in your application Manifest file.
<manifest>
<uses-permission android:name="android.permission.INTERNET" />
<!-- Include next permission if you want to allow UIL to cache images on SD card -->
<uses-permission android:name="android.permission.WRITE_EXTERNAL_STORAGE" />
...
<application android:name="MyApplication">
...
</application>
</manifest>
3. Library setup in your Application class
import android.app.Application;
import com.nostra13.universalimageloader.cache.memory.impl.WeakMemoryCache;
import com.nostra13.universalimageloader.core.DisplayImageOptions;
import com.nostra13.universalimageloader.core.ImageLoader;
import com.nostra13.universalimageloader.core.ImageLoaderConfiguration;
import com.nostra13.universalimageloader.core.assist.ImageScaleType;
import com.nostra13.universalimageloader.core.display.FadeInBitmapDisplayer;
public class MyApplication extends Application {
@Override
public void onCreate() {
super.onCreate();
// UNIVERSAL IMAGE LOADER SETUP
DisplayImageOptions defaultOptions = new DisplayImageOptions.Builder()
.cacheOnDisc(true).cacheInMemory(true)
.imageScaleType(ImageScaleType.EXACTLY)
.displayer(new FadeInBitmapDisplayer(300)).build();
ImageLoaderConfiguration config = new ImageLoaderConfiguration.Builder(
getApplicationContext())
.defaultDisplayImageOptions(defaultOptions)
.memoryCache(new WeakMemoryCache())
.discCacheSize(100 * 1024 * 1024).build();
ImageLoader.getInstance().init(config);
// END - UNIVERSAL IMAGE LOADER SETUP
}
}
4. Download and display bitmap on ImageView
//your image url String url = "http://stacktips.com/wp-content/uploads/2014/05/UniversalImageLoader-620x405.png"; ImageLoader imageLoader = ImageLoader.getInstance(); DisplayImageOptions options = new DisplayImageOptions.Builder().cacheInMemory(true) .cacheOnDisc(true).resetViewBeforeLoading(true) .showImageForEmptyUri(fallback) .showImageOnFail(fallback) .showImageOnLoading(fallback).build(); //initialize image view ImageView imageView = (ImageView) findViewById(R.id.imageView1) //download and display image from url imageLoader.displayImage(url, imageView, options);
getting error as fallback cannot be resolved to a variable???
discCacheSize is changed to diskCacheSize & cacheOnDisc changed to cacheOnDisk if you are getting deprecated error.
Thanks Gaurav.
How I can create several galleries using universal image loader?
but what for multiple images ?
Why do you reuse the DisplayImageOptions, while you can call displayImage, without using the 3rd parameters and this used the default one written in the Application class.
Hello Omar, He need to customise the failure and empty url for this view only not over all view that using Image loader over the app :)
How to create listview with image and textview using universal image loader library ?Any one help me plz
Checkout this tutorial
Loading Image Asynchronously In Android ListView
How to add text for each images
UIL used to download images form server. For local images you can use the following method as per your requirements.
img.setBackgroundResource();
img.setImageBitmap();
img.setBackground();
yes i know this default method but i want to set round corner image provided by image loader..
There is no way elsr using thumb image.
you probably need to run profiler and see the memory consumption. 2250 sized multiple images can be a threat if not handled properly.
when i want to show huge images there is out of memory error , how to resolve loading huge images?
What is the approx image size. ??
uri to image resource. It can be drawable.
Thanx buddy ! Really useful tutorial ! :like:
thanks
Thanx I’ll try it up