Download android-query.jar from below link:
http://www.java2s.com/Code/Jar/a/Downloadandroidqueryfull0243jar.htm
Add following code where you want to load image :
public ImageLoader imageLoader;
imageLoader = new ImageLoader(this);
AQuery androidAQuery=new AQuery(getApplicationContext());
androidAQuery.id(ImageView).image(url, true, true, 100,default_pic);
Note: if you dont want to store image in cache memory set true parameters to false.