c# uwp timer替代

Question

我使用 Timers 在 Unity (C#) 中编写了一些代码。后来我意识到我正在编写的平台 UWP 不能使用这些。我尝试了一些替代方案，例如 Threadpooltimers，但我无法让它们工作。还有其他替代方法或方法可以使 Threadpooltimers 工作吗？

using System.Collections;
using System.Collections.Generic;
using System.Timers;
using UnityEngine;

public class Spin : MonoBehaviour {

    // Use this for initialization
    void Start() {}

    public bool spin = false;
    public float speed = 36f;
    private static Timer aTimer;
    private static Timer bTimer;
    void StartSpin()
    {
        spin = true;

        // Create a timer and set two full rotation intervals for demo and 
        //another one to adjust the movement of the object (screen).
        aTimer = new System.Timers.Timer();
        aTimer.Interval = 2*360/speed * 1000 - 1;

        bTimer = new System.Timers.Timer();
        bTimer.Interval = 360 / speed * 1000;

        // Hook up the Elapsed event for the timer. 
        aTimer.Elapsed += OnTimedEventa;
        bTimer.Elapsed += OnTimedEventb;

        // Disable autoreset
        aTimer.AutoReset = false;
        bTimer.AutoReset = true;

        // Start the timer
        aTimer.Enabled = true;
        bTimer.Enabled = true;
    }

    // At the end of Timer b, change the angle of the object (screen).
    void OnTimedEventb(object bTimer, System.EventArgs e)
    {
        transform.Rotate(Vector3.right, 45);
    }

    // At the end of Timer a, stop the spin movement and stop Timer b from resetting.
    void OnTimedEventa(object aTimer, System.EventArgs e)
    {
        spin = false;
        bTimer.AutoReset = false;
    }

    // Update is called once per frame
    void Update () 
    {
        transform.Rotate(Vector3.back, System.Convert.ToSingle(spin) * speed * Time.deltaTime);
    }
}

Answer 1

使用协程或更新方法编写计时器。

IEnumerator Start() {
     while (true) {
          yield return new WaitForSeconds(1.0f);
          Debug.Log("Elapsed.");
     }
}

Answer 2

正如@MD Muzibur Ra​​hman 所述，您可以使用 DispatcherTimer。

以下是从MSDN 截取的关于如何使用 DispatcherTimer 的代码：

DispatcherTimer dispatcherTimer;
DateTimeOffset startTime;
DateTimeOffset lastTime;
DateTimeOffset stopTime;
int timesTicked = 1;
int timesToTick = 10;

public void DispatcherTimerSetup()
{
    dispatcherTimer = new DispatcherTimer();
    dispatcherTimer.Tick += dispatcherTimer_Tick;
    dispatcherTimer.Interval = new TimeSpan(0, 0, 1);
    //IsEnabled defaults to false
    TimerLog.Text += "dispatcherTimer.IsEnabled = " + dispatcherTimer.IsEnabled + "\n";
    startTime = DateTimeOffset.Now;
    lastTime = startTime;
    TimerLog.Text += "Calling dispatcherTimer.Start()\n";
    dispatcherTimer.Start();
    //IsEnabled should now be true after calling start
    TimerLog.Text += "dispatcherTimer.IsEnabled = " + dispatcherTimer.IsEnabled + "\n";
}

void dispatcherTimer_Tick(object sender, object e)
{
    DateTimeOffset time = DateTimeOffset.Now;
    TimeSpan span = time - lastTime;
    lastTime = time;
    //Time since last tick should be very very close to Interval
    TimerLog.Text += timesTicked + "\t time since last tick: " + span.ToString() + "\n";
    timesTicked++;
    if (timesTicked > timesToTick)
    {
        stopTime = time;
        TimerLog.Text += "Calling dispatcherTimer.Stop()\n";
        dispatcherTimer.Stop();
        //IsEnabled should now be false after calling stop
        TimerLog.Text += "dispatcherTimer.IsEnabled = " + dispatcherTimer.IsEnabled + "\n";
        span = stopTime - startTime;
        TimerLog.Text += "Total Time Start-Stop: " + span.ToString() + "\n";
    }
}
private void Page_Loaded_1(object sender, RoutedEventArgs e)
{
    DispatcherTimerSetup();
}