Android Open Source - Team7-301Project Context Singleton

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License

The source code is released under:

Apache License

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Java Source Code

package ca.ualberta.cs.intent_singletons;
//from w  w w  .  j av a  2 s  . c o m
import android.content.Context;

/**
 * This class can be used to pass around a Context for the sake of saving and loading data locally. 
 * @author bbruner
 *
 */
public class ContextSingleton
{
  private static ContextSingleton contextSingleton;
  Context ctx;
  
  private ContextSingleton()
  {
    super();
    this.contextSingleton = null;
    this.ctx = null;
  }
  
  /**
   * Get the instance of the ContextSingleton
   * @return ContextSingleton
   */
  public static ContextSingleton getInstance()
  {
    if(contextSingleton == null)
    {
      contextSingleton = new ContextSingleton();
    }
    return contextSingleton;
  }
  
  /**
   * Set the Context in the singleton. Do not set with a context that is going to be
   * destroyed soon or that might be picked up by the garbage collector.
   * @param ctx The context to set.
   */
  public void setContext(Context ctx)
  {
    this.ctx = ctx;
  }
  
  /**
   * Get the Context in the singleton
   * @return The context. Returns null if a call to setContext has not been made yet.
   */
  public Context getContext()
  {
    return this.ctx;
  }
}

Java Source Code List