Android Open Source - Dumbledroid Memory Cache

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License

The source code is released under:

Copyright (c) 2013, Leocadio Tin? All rights reserved. Redistribution and use in source and binary forms, with or without modification, are permitted provided that the following conditions are met: ...

Java Source Code

package io.leocad.dumbledroid.data.cache;
/* w  w  w.  j  a  v  a  2  s  .c om*/
import java.lang.ref.SoftReference;
import java.util.HashMap;
import java.util.Map;

public class MemoryCache {

  private static final MemoryCache INSTANCE = new MemoryCache();
  public static MemoryCache getInstance() {
    return INSTANCE;
  }

  private Map<String, SoftReference<ModelHolder>> mMap;

  private MemoryCache() {
    mMap = new HashMap<String, SoftReference<ModelHolder>>();
  }

  public void cache(String key, ModelHolder holder) {
    final SoftReference<ModelHolder> ref = new SoftReference<ModelHolder>(holder);
    mMap.put(key, ref);
  }

  public ModelHolder getCached(String key) {
    final SoftReference<ModelHolder> reference = mMap.get(key);
    if (reference == null) {
      return null;
    }
    final ModelHolder holder = reference.get();
    if(holder == null) {
      reference.clear();
      mMap.remove(key);
    }
    return holder;
  }
}

Java Source Code List

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