PreloadAsync

Yields

This is a yielding function. When called, it will pause the Lua thread that called the function until a result is ready to be returned, without interrupting other scripts.

Function of:

ContentProvider

Description:

This function takes an array of Instance|Instances as a parameter and yields until all of assets associated with those instances have loaded. This can be used to pause a script and not use content until it is certain that the content has been loaded into the game.

When the function is called, the engine will go through all of the instances in the passed in array (and all of the descendants of the passed in instances). If any of the instances have a property that defines a link to content, such as a Decal or a Sound, then the function will attempt to load the asset from the Roblox website. If any of the assets fail to load, an error message will appear in the places output, but the PreloadAsync function itself will not error and will continue executing until it has processed each passed in instance.

Parameters

Name	Type	Default	Description
Name contentIdList	Type Array	Default	Summary An array of `Instance`s to be preloaded.
Name callbackFunction	Type Function	Default nil	Summary The Lua function to be called on completion of each asset request

Returns

Return Type	Summary
Return Type void	Summary No return

Code Samples

Preloading Assets

In this example a Decal and Sound are preloaded into a game. Once they have finished loading the script will print a message to the output.

				
					Expected Output
				
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			local ContentProvider = game:GetService("ContentProvider")

local waitingImage = "rbxassetid://1234561"

local thumbLeft = "rbxthumb://type=Avatar&id=1234&w=100&h=100"
local thumbRight = "rbxthumb://type=Avatar&id=1235&w=100&h=100"

local failedImageLeft = "rbxassetid://1234562"
local failedImageRight = "rbxassetid://1234563"

local labelLeft = script.Parent.LabelLeft
labelLeft.Image = waitingImage

local labelRight = script.Parent.LabelRight
labelRight.Image = waitingImage

local assets = { thumbLeft, thumbRight }

local function setThumb(contentId, status)
	if thumbLeft == contentId then
		labelLeft.Image = Enum.AssetFetchStatus.Success == status and thumbLeft or failedImageLeft
	elseif thumbRight == contentId then
		labelRight.Image = Enum.AssetFetchStatus.Success == status and thumbRight or failedImageRight
	end
end

spawn(function()
	ContentProvider:PreloadAsync(assets, setThumb)
end)
		
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PreloadAsync

Parameters

contentIdList

callbackFunction

Returns

void

Code Samples

Preloading Assets