Android Open Source - snakk-ads-android-sample-app Sharable

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License

The source code is released under:

Copyright (c) 2012, Snakk! Media Group All rights reserved. Redistribution and use in source and binary forms, with or without modification, are permitted provided that the following conditions are m...

Java Source Code

package com.snakk.advertising.internal;
//from   w  w w.  j  a  v  a2  s.  co  m
import android.os.Parcel;
import android.os.Parcelable;
import android.os.SystemClock;

import java.util.HashMap;
import java.util.Map;


/**
 * Convenience class used for passing live objects between intents
 * pulled from http://stackoverflow.com/questions/2736389/how-to-pass-object-from-one-activity-to-another-in-android#7683528
 */
public final class Sharable<T> implements Parcelable {

    private T m_object;

    /**
     * Only used for distinguishing null sharables in the debugger.
     * It's not referenced anywhere else, and wont be carried over when
     * readFromParcel is called.
     */
    private String debugTag = null;


    public static final Parcelable.Creator<Sharable> CREATOR = new  Parcelable.Creator<Sharable>() {
        public Sharable createFromParcel(Parcel in) {
            return new Sharable (in);
        }

        @Override
        public Sharable[] newArray(int size) {
            return new Sharable[size];
        }
    };

    public Sharable(final T obj, final String debugTag) {
        this.debugTag = debugTag;
        m_object = obj;
    }

    public Sharable(Parcel in) {
        readFromParcel(in);
    }

    public T obj() {
        return m_object;
    }

    @Override
    public int describeContents() {
        return 0;
    }

    @Override
    public void writeToParcel(final Parcel out, int flags) {
        final long val;
        if(m_object != null) {
            val = SystemClock.elapsedRealtime() + m_object.hashCode();
        }
        else {
            val = 0;
        }
        out.writeLong(val);
        put(val, m_object);
    }

    @SuppressWarnings("unchecked")
    private void readFromParcel(final Parcel in) {
        final long val = in.readLong();
        m_object = (T)get(val);
    }

/////

    //TODO do something about cast safety here...
    private static final Map<Long, Object> s_sharableMap = new HashMap<Long, Object>(3);

    synchronized private static void put(long key, final Object obj) {
        s_sharableMap.put(key, obj);
    }

    synchronized private static Object get(long key) {
        return s_sharableMap.remove(key);
    }
}

Java Source Code List

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