要使“项目组’‘正确显示在“创造性”菜单中，请使用FabricItemGroupBuilder创建它们：

public class ExampleMod implements ModInitializer
{
	// ...
	public static final ItemGroup ITEM_GROUP = FabricItemGroupBuilder.build(
		new Identifier("tutorial", "general"),
		() -> new ItemStack(Blocks.COBBLESTONE));
 
	public static final ItemGroup OTHER_GROUP = FabricItemGroupBuilder.create(
		new Identifier("tutorial", "other"))
		.icon(() -> new ItemStack(Items.BOWL))
		.build();
	// ...
}

调用FabricItemGroupBuilder#build后，您的组将被添加到creative菜单中的项目组列表中。 Make sure you replace the arguments ¹⁾ you pass to the Identifier constructor with your actual mod ID and the translation key you want to give your item group for localization ²⁾ later on.

创建自定义项时，请在设置上调用Item.Settings\group，然后传入自定义组：

public static final Item YOUR_ITEM = new Item(new Item.Settings().group(ExampleMod.ITEM_GROUP));

Call FabricItemGroupBuilder#appendItems and pass any Consumer<List<ItemStack>>. You can then add whatever stacks you want to the given list in some order. ItemStack.EMPTY can be used to place empty spaces in your group.

public class ExampleMod implements ModInitializer
{
	// ...
	public static final ItemGroup ITEM_GROUP = FabricItemGroupBuilder.build(
		new Identifier("tutorial", "general"),
		() -> new ItemStack(Blocks.COBBLESTONE));
 
	public static final ItemGroup OTHER_GROUP = FabricItemGroupBuilder.create(
		new Identifier("tutorial", "other"))
		.icon(() -> new ItemStack(Items.BOWL))
		.appendItems(stacks ->
		{
			stacks.add(new ItemStack(Blocks.BONE_BLOCK));
			stacks.add(new ItemStack(Items.APPLE));
			stacks.add(PotionUtil.setPotion(new ItemStack(Items.POTION), Potions.WATER));
			stacks.add(ItemStack.EMPTY);
			stacks.add(new ItemStack(Items.IRON_SHOVEL));
		})
		.build();
	// ...
}