Minecraft modding help

Ok so how can we mod a mobspawner in minecraft that makes mobs not pigs i cant seem to code it in pls someone help me

 

I believe that you need to place them on mossy cobblestone and have a higher setting then peaceful. Not %100 sure but I think that is how you spawn the actual mobs

 

No, they have to be preset to spawn a certain monster.

 

Well how do i tell the spawner to make a certain mob do u have any idea?

 

any idea on how to do that?

 

When it shows something other than a pig.

No, I don't.

 

http://www.minecraftwiki.net/wiki/Mob_Spawner

gives you all the info you need straight from the source

 

does not tell how to change the mob that spawns for xbox

 

You can't do that. The default for spawners is pigs and there is no way that I myself am aware of. There could be a way, but not to my knowledge.