AsyncOperation

Description

Class representing an asynchronous operation, which can be used as a yield instruction in a coroutine or awaited with the await operator.

AsyncOperation inherits from YieldInstruction and can be yield returned from a coroutine. You can also perform actions like the following:

• Check its progress without any coroutine, for example checking AsyncOperation.isDone or AsyncOperation.progress inside MonoBehaviour.Update.
• Subscribe to its completed event AsyncOperation.completed to receive a callback when it finishes.
• Adjust properties such as AsyncOperation.allowSceneActivation while it's running.
• Await its completion with the await key word as part of Unity's Awaitable support.

Additional resources: SceneManager.LoadSceneAsync, AssetBundle.LoadAssetAsync, Resources.LoadAsync.

using System.Collections;
using UnityEngine;

public class ExampleClass : MonoBehaviour
{
    public void Start()
    {
        StartCoroutine(Example_AsyncTests());
    }

    public IEnumerator Example_AsyncTests()
    {
        Debug.Log("Start of AsyncLoad Example");
        
        var load = UnityEngine.Resources.LoadAsync("");
        yield return load;
        yield return null;
        
        Debug.Log("End of AsyncLoad Example");
    }
}

Properties

Events

Inherited Members