java Unity Android服务

Question

我正在找人向我解释，当应用程序未打开时，如何在Unity上运行Android GPS服务。 我正在创建一个应用程序，在其中我必须找到用户，并找出他们是否在某个位置。 有没有人对如何启动安卓服务，在应用程序不运行时检索GPS并使用它执行任务有很好的指导

服务应该做什么：

1. 启动安卓GPS服务
2. 检查用户是否靠近兴趣点
3. 发送通知

Answer 1

我无法想象会有任何“法律问题”——Android定位服务基本上是“Android的一部分”

不管怎样：

下面是一篇好文章：

How to Access GPS Location in Unity， 没有这样的德夫 2020年7月1日

以下是本文中的示例代码：

using UnityEngine;
using System.Collections;

public class TestLocationService : MonoBehaviour
{
    IEnumerator LocationCoroutine() {
    // Uncomment if you want to test with Unity Remote
/*#if UNITY_EDITOR
        yield return new WaitWhile(() => !UnityEditor.EditorApplication.isRemoteConnected);
        yield return new WaitForSecondsRealtime(5f);
#endif*/
#if UNITY_EDITOR
        // No permission handling needed in Editor
#elif UNITY_ANDROID
        if (!UnityEngine.Android.Permission.HasUserAuthorizedPermission(UnityEngine.Android.Permission.CoarseLocation)) {
            UnityEngine.Android.Permission.RequestUserPermission(UnityEngine.Android.Permission.CoarseLocation);
        }

        // First, check if user has location service enabled
        if (!UnityEngine.Input.location.isEnabledByUser) {
            // TODO Failure
            Debug.LogFormat("Android and Location not enabled");
            yield break;
        }

#elif UNITY_IOS
        if (!UnityEngine.Input.location.isEnabledByUser) {
            // TODO Failure
            Debug.LogFormat("IOS and Location not enabled");
            yield break;
        }
#endif
        // Start service before querying location
        UnityEngine.Input.location.Start(500f, 500f);
                
        // Wait until service initializes
        int maxWait = 15;
        while (UnityEngine.Input.location.status == LocationServiceStatus.Initializing && maxWait > 0) {
            yield return new WaitForSecondsRealtime(1);
            maxWait ;
        }

        // Editor has a bug which doesn't set the service status to Initializing. So extra wait in Editor.
#if UNITY_EDITOR
        int editorMaxWait = 15;
        while (UnityEngine.Input.location.status == LocationServiceStatus.Stopped && editorMaxWait > 0) {
            yield return new WaitForSecondsRealtime(1);
            editorMaxWait ;
        }
#endif

        // Service didn't initialize in 15 seconds
        if (maxWait < 1) {
            // TODO Failure
            Debug.LogFormat("Timed out");
            yield break;
        }

        // Connection has failed
        if (UnityEngine.Input.location.status != LocationServiceStatus.Running) {
            // TODO Failure
            Debug.LogFormat("Unable to determine device location. Failed with status {0}", UnityEngine.Input.location.status);
            yield break;
        } else {
            Debug.LogFormat("Location service live. status {0}", UnityEngine.Input.location.status);
            // Access granted and location value could be retrieved
            Debug.LogFormat("Location: " 
                + UnityEngine.Input.location.lastData.latitude + " " 
                + UnityEngine.Input.location.lastData.longitude + " " 
                + UnityEngine.Input.location.lastData.altitude + " " 
                + UnityEngine.Input.location.lastData.horizontalAccuracy + " " 
                + UnityEngine.Input.location.lastData.timestamp);

            var _latitude = UnityEngine.Input.location.lastData.latitude;
            var _longitude = UnityEngine.Input.location.lastData.longitude;
            // TODO success do something with location
        }

        // Stop service if there is no need to query location updates continuously
        UnityEngine.Input.location.Stop();
    }
}