如何统一更新gps？

Question

我目前正在通过 Unity 开发 ar 游戏。我正在使用 Vuforia sdk 制作游戏。 游戏内需要 GPS 坐标，但不会更新 GPS 坐标。 奇怪的是，在使用gps代码只在屏幕上显示坐标的单个应用程序中，gps坐标是正确更新的，但是如果我将相同的代码放入游戏中，gps坐标在开始时不再更新应用。 我不认为这是代码的问题。请帮忙。

公共类 GPSCheck : MonoBehaviour{

public static double first_Lat;
public static double first_Long;
public static double current_Lat;
public static double current_Long; 

private static WaitForSeconds second;

private static bool gpsStarted = false;

private static LocationInfo location;

private void Awake()
{
    second = new WaitForSeconds(1.0f);
}

IEnumerator Start()
{

    if (!Input.location.isEnabledByUser)
    {
        Debug.Log("GPS is not enabled");
        yield break;
    }


    Input.location.Start(5f, 10f);
    Debug.Log("Awaiting initialization");


    int maxWait = 20;
    while (Input.location.status == LocationServiceStatus.Initializing && maxWait > 0)
    {
        yield return second;
        maxWait -= 1;
    }

    if (maxWait < 1)
    {
        Debug.Log("Timed out");
        yield break;
    }


    if (Input.location.status == LocationServiceStatus.Failed)
    {
        Debug.Log("Unable to determine device location");
        yield break;

    }
    else
    {

        location = Input.location.lastData;
        first_Lat = location.latitude * 1.0d;
        first_Long = location.longitude * 1.0d;
        gpsStarted = true;


        while (gpsStarted)
        {
            location = Input.location.lastData;
            current_Lat = location.latitude * 1.0d;
            current_Long = location.longitude * 1.0d;
            yield return second;
        }
    }
}

public static void StopGPS()
{
    if (Input.location.isEnabledByUser)
    {
        gpsStarted = false;
        Input.location.Stop();
    }
}

}

Answer 1

首先：你没有启动你的协程。

第二：避免使用Unity方法作为协程。

试试这个：

public static double first_Lat;
public static double first_Long;
public static double current_Lat;
public static double current_Long; 

private static WaitForSeconds second;

private static bool gpsStarted = false;

private static LocationInfo location;

private void Awake()
{
    second = new WaitForSeconds(1.0f);
}

private void Start()
{
    StartCoroutine(GSP());
}

private IEnumarator GSP()
{
    if (!Input.location.isEnabledByUser)
    {
        Debug.Log("GPS is not enabled");
        yield break;
    }


    Input.location.Start(5f, 10f);
    Debug.Log("Awaiting initialization");


    int maxWait = 20;
    while (Input.location.status == LocationServiceStatus.Initializing && maxWait > 0)
    {
        yield return second;
        maxWait -= 1;
    }

    if (maxWait < 1)
    {
        Debug.Log("Timed out");
        yield break;
    }


    if (Input.location.status == LocationServiceStatus.Failed)
    {
        Debug.Log("Unable to determine device location");
        yield break;

    }
    else
    {

        location = Input.location.lastData;
        first_Lat = location.latitude * 1.0d;
        first_Long = location.longitude * 1.0d;
        gpsStarted = true;


        while (gpsStarted)
        {
            location = Input.location.lastData;
            current_Lat = location.latitude * 1.0d;
            current_Long = location.longitude * 1.0d;
            yield return second;
        }
    }
}

public static void StopGPS()
{
    if (Input.location.isEnabledByUser)
    {
        gpsStarted = false;
        Input.location.Stop();
    }
}