package net.loonggg.util;   import java.lang.ref.SoftReference;
import java.util.HashMap;   import android.graphics.Bitmap;
public class MemoryCache {   private HashMap<String, SoftReference<Bitmap>> cache=new HashMap<String, SoftReference<Bitmap>>();
public Bitmap get(String id){   if(!cache.containsKey(id))
return null;   SoftReference<Bitmap> ref=cache.get(id);
return ref.get();   }
public void put(String id, Bitmap bitmap){   cache.put(id, new SoftReference<Bitmap>(bitmap));
}   public void clear() {
cache.clear();   }
}