UniTask--CancellationTokenSource

UniTask–CancellationTokenSource

简单写了一份代码，大家可以在Unity中尝试运行一下，希望能够帮助大家理解UniTask的取消方法。

using System;
using System.Collections;
using System.Collections.Generic;
using System.Threading;
using Cysharp.Threading.Tasks;
using UnityEngine;
using UnityEngine.UI;

public class LearnTaskFour : MonoBehaviour
{
    public Button btnS;
    public Button btnE;

    private CancellationTokenSource _one;
    private CancellationToken _token;

    private void Start()
    {
        _one = new CancellationTokenSource();
        _token = _one.Token;
        //第一种 使用try Catch得方式
        // btnS.onClick.AddListener(async () =>
        // {
        //     try
        //     {
        //         await Run(_token);
        //     }
        //     catch (OperationCanceledException e)
        //     {
        //         Debug.Log(e);
        //     }
        // });
        
        //第二种
        btnS.onClick.AddListener(async () =>
        {
            bool cancel = await Run(_token).SuppressCancellationThrow();
            if (cancel)
            {
                Debug.Log("取消");
            }
        });
        btnE.onClick.AddListener(async () =>
        {
            _one.Cancel();//取消
            _one.Dispose();
            _one = new CancellationTokenSource();
            _token = _one.Token;
        });
    }
    private async UniTask Run(CancellationToken token)
    {
        while (true)
        {
            await UniTask.NextFrame(token);
            Debug.Log("执行");
        }
    }
}
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点击btns时，开始执行

点击btne，取消