Solved Cast Itemstack to type Potion

Ok, here is what I got so far...

Code:

if(material == Material.POTION){
                Item tmp = (Item) item;
                Potion potion = (Potion) tmp;
                //Do stuff with the potion
}

And it gives me this error

Code:

2013-05-21 17:27:09 [SEVERE] java.lang.ClassCastException: org.bukkit.craftbukkit.v1_5_R3.inventory.CraftItemStack cannot be cast to org.bukkit.entity.Item

So, how do I do it?
Thanks!

Bump

EDIT by Moderator: merged posts, please use the edit button instead of double posting.

 

The "item" that you used is importen with bukkit,craftbukkit.v1_5_R3.inventory.CraftItemStack instead of org.bukkit.inventory.ItemStack (Im not sure about the second import) and you can't cast a craftbukkit type to an bukkit api type. Import the right ItemStack and than try again.

 

Are

Are these imports correct?

Code:

import org.bukkit.entity.Item;
import org.bukkit.inventory.ItemStack;
import org.bukkit.potion.Potion;

 

That's actually completely wrong. The real issue, is that he's trying to cast an ItemStack to an Item. An Item is the entity used when an Item is on the ground, an ItemStack is what you have in your inventory. They're incomparable types.

The reason it shows as being CraftItemStack is because CraftItemStack extends ItemStack, and that ItemStack happens to be a CraftItemStack(it was probably retrieved from an Inventory).

As for what the OP should do, I have no idea, as I have no idea what they're trying to do or achieve.

 

Thanks for the info!
but anyway that I can cast an ItemStack to a potion?

 

Thx for correcting me, Sorry for the mistake. Now that i rewatch your topic, He's right. The Item is the entity fo a dropped item as much as i know, And you can't just cast an itemstack to an item, Its like making an item in inventory to a dropped item IN THE INVENTORY. well, you can drop an item in a specific location with the same itemstack and you will get an Item entity returned with world.dropItem(loc,itemstack) where loc is the location, itemstack is the itemstack and world is the specific world. Hope i helped, And sorry for the mistake.

 

Ok I'll re word it,

Lets say that I have a potion in my inventory.
But I want to get the potion type, duration, etc.
However, this can only be done by using the potion type variable.
So, how to get potion data from an itemstack?

 

John Cameron Using Potion.fromItemStack(ItemStack). https://github.com/Bukkit/Bukkit/blob/master/src/main/java/org/bukkit/potion/Potion.java#L385

 

Thanks so much, it works!