Create Database Helper

//from  w  w  w .j av  a 2 s.c om
import android.content.Context;
import android.database.sqlite.SQLiteDatabase;
import android.database.sqlite.SQLiteOpenHelper;


public class DatabaseHelper extends SQLiteOpenHelper {
  
  private static DatabaseHelper mInstance = null;

  private Context mContext;

  public static DatabaseHelper getInstance(Context context, String databaseName, int databaseVersion) {
    /**
     * use the application context as suggested by CommonsWare.
     * this will ensure that you dont accidentally leak an Activitys
     * context (see this article for more information:
     * http://developer.android.com/resources/articles/avoiding-memory-leaks.html)
     */
    if (mInstance == null) {
      mInstance = new DatabaseHelper(context.getApplicationContext(), databaseName, databaseVersion);
    }
    return mInstance;
  }

  /**
   * constructor should be private to prevent direct instantiation.
   * make call to static factory method "getInstance()" instead.
   */
  private DatabaseHelper(Context context, String databaseName, int databaseVersion) {
    super(context, databaseName, null, databaseVersion);
    this.mContext = context;
  }

  @Override
  public void onCreate(SQLiteDatabase db) {
    // TODO Auto-generated method stub
    
  }

  @Override
  public void onUpgrade(SQLiteDatabase db, int oldVersion, int newVersion) {
    // TODO Auto-generated method stub
    
  }
}