I have no idea why but this doesn't work:

 

TAB:

public class RoATab extends CreativeTabs
{
Item icon;

public RoATab(String lable, Item icon)
{
	super(lable);
	this.icon = icon;
}

@Override
public Item getTabIconItem() 
{
	return icon;
}
}

InitTabs:

	RoATab TabWeapons = new RoATab("RoAWeapons", Items.iron_sword);

ITEM:

public class ItemCore extends Item
{
public ItemCore(String UN, CreativeTabs Tab)
{
	super();
	GameRegistry.registerItem(this, UN);
	setUnlocalizedName(UN);
	setTextureName(InitUtil.ModID + ":" + UN);
	this.setCreativeTab(Tab);
}
.......
...
.

InitItems:

	MyItem = 	new ItemCore("Steel", InitTabs.TabWeapons);

 

SAME code works with Blocks (I mean this tab and setCreativeTab() works with extended Block)

 

Any idea? Is Item tab declaration different?

 

Note: setCreativeTab(tab) doesn't work only if I place there my Tab name, vanilla ones work.

 

Bro, I wouldn't be here wihtout making sure it is not my mistake.

 

Alredy done step by step initialization. Tabs alredy exist when I declare items.

 

Fun fact:

 

Well, I think I'm just gonna cleanup workspace, maybe there is some troll code somewhere from .git

I just made my tab like this inside my main class:

 

public static CreativeTabs tabName = new CreativeTabs("tabName") {

	@Override
	public Item getTabIconItem() {

		return Items.apple;

	}

};

Where are you registering your tab?

Also where are you set the ID of your tab?

You should make a class for your tab not just in your main class.

Can we see your posInit please?

That is literally it, nothing in my init methods. I think it just creates an ID depending on what isn't used. It works fine and I can easily set an item to appear in the tab.