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我试图将简单的跟踪应用程序放在一起。它所做的只是注册位置更新，而不是每隔15秒将设备位置发送到webapi（Web服务）服务。以下是执行注册并发布到服务器的代码。monodroid在最小化应用程序后继续执行应用程序
#region START STOP TRACKING
public void StartTracking()
{
if (currentAsset == null) { return; }
isTracking = true;
//SETUP THE LOCATION VARIALBES
if (_geocoder == null) { _geocoder = new Geocoder(this); }
if (_locationManager == null) { _locationManager = (LocationManager)GetSystemService(LocationService); }
var criteria = new Criteria() { Accuracy = Accuracy.Fine };
string bestProvider = _locationManager.GetBestProvider(criteria, true);
Location lastKnownLocation = _locationManager.GetLastKnownLocation(bestProvider);
//LOG RECORD FOR CURRENT LOCATION
if (lastKnownLocation != null)
{
PostData(lastKnownLocation, DateTime.Now);
}
_locationManager.RequestLocationUpdates(bestProvider, 2000, 1, this);
BusTimer.Start();
}
private void OnTimeEvent(object source, ElapsedEventArgs e)
{
RunOnUiThread(delegate
{
var criteria = new Criteria() { Accuracy = Accuracy.Fine };
string bestProvider = _locationManager.GetBestProvider(criteria, true);
Location lastKnownLocation = _locationManager.GetLastKnownLocation(bestProvider);
//LOG RECORD FOR CURRENT LOCATION
if (lastKnownLocation != null)
{
PostData(lastKnownLocation, DateTime.Now);
}
});
}
public void StopTracking()
{
isTracking = false;
_locationManager.RemoveUpdates(this);
BusTimer.Stop();
}
#endregion
#region POST LOCATION DATA TO SERVER
private void PostData(Location setLocation, DateTime setDate)
{
try
{
currentLocation = setLocation;
string longString = string.Format("{0}", setLocation.Longitude);
string latString = string.Format("{0}", setLocation.Latitude);
//POST DATA OVER
var client = new RestClient("http://mywebserver/");
var request = new RestRequest("API/DataAPI/PerformAction", Method.GET);
request.AddParameter("ActionName", "PostEntityData"); // adds to POST or URL querystring based on Method
string JSONString = "{'EntityID':" + currentAsset.AssetID.ToString() + ",'EntityName':'Asset','Long':" + longString + ",'Lat':" + latString + ", 'CheckDateTime':'" + setDate.ToString("yyyy-MM-dd HH:mm:ss") + "'}";
request.AddParameter("ActionData", JSONString); // adds to POST or URL querystring based on Method
client.ExecuteAsync(request, response =>
{
Console.WriteLine(response.Content);
this.RunOnUiThread(new Runnable(PostToastData));
});
}
catch (System.Exception e)
{
Console.Write(e.Message);
}
}
public void PostToastData()
{
string longString = string.Format("{0}", currentLocation.Longitude);
string latString = string.Format("{0}", currentLocation.Latitude);
Toast.MakeText(this, "Logged Location record for " + currentAsset.AssetNumber + " at Long: " + longString + ", Lat: " + latString, ToastLength.Short).Show();
}
#endregion
这一切都完美的作品。当我最小化应用程序时，它会继续正确地将数据发布到服务中。问题出现在大约一个小时后，应用程序意外死亡。
任何人都可以看到任何原因为什么它会在一段时间后崩溃？该应用程序几乎没有使用任何内存，所以我不认为这将是一个内存问题。我是否应该在不同的庄园中处理在后台运行的应用程序？我是否应该在不同的线程上执行此过程，以便在应用程序未聚焦时可以在后台继续执行此过程？
任何意见，将不胜感激。
感谢