Android Extras Bundle Extensions for AND102 to prevent magic strings

Example.cs

// Put
intent.PutExtra(EXTRAS.ItemPosition, position);

// Get
int position = this.Intent.GetExtra(EXTRAS.ItemPosition, -1);

ExtrasExtensions.cs

public enum EXTRAS
	{
		ItemPosition
	}

	public static class ExtrasExtensions
	{
		public static void PutExtra(this Intent intent, EXTRAS extra, int value)
		{
			intent.PutExtra(extra.ToString(), value);
		}

		public static int GetExtra(this Intent intent, EXTRAS extra, int defaultValue)
		{
			if(intent == null)
			{
				return defaultValue;
			}

			return intent.GetIntExtra(extra.ToString(), defaultValue);
		}
	}