Android get res id not by R

MResource.java

import android.content.Context;
import android.content.res.Resources;

public class MResource {
	
	private static int getResID(Context context, String resName, String defType) {
		 Resources res = context.getResources();		
		 return res.getIdentifier(resName, defType, context.getPackageName());
	}
	
	public static int getIdByName(Context context, String className, String name)
	{
		return getResID(context,name,className);
	}
}