add openhack files
This commit is contained in:
Ryan Peters
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// Copyright (c) Microsoft Corporation. All rights reserved.
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// Licensed under the MIT license. See LICENSE file in the project root for details.
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using System;
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using System.Threading.Tasks;
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using Android.Util;
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using Android.Content;
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namespace MyDriving.Droid.Services
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{
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public class GeolocationHelper
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{
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protected static GeolocationServiceConnection LocationServiceConnection;
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private static bool _isRunning;
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// declarations
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protected readonly string LogTag = "App";
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// properties
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public static GeolocationHelper Current { get; }
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public bool IsRunning => _isRunning;
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public GeolocationService LocationService
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{
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get
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{
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if (LocationServiceConnection.Binder == null)
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throw new Exception("Service not bound yet");
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// note that we use the ServiceConnection to get the Binder, and the Binder to get the Service here
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return LocationServiceConnection.Binder.Service;
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}
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}
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// events
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public event EventHandler<ServiceConnectedEventArgs> LocationServiceConnected = delegate { };
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#region Application context
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static GeolocationHelper()
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{
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Current = new GeolocationHelper();
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}
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protected GeolocationHelper()
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{
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// create a new service connection so we can get a binder to the service
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LocationServiceConnection = new GeolocationServiceConnection(null);
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// this event will fire when the Service connectin in the OnServiceConnected call
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LocationServiceConnection.ServiceConnected += (sender, e) =>
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{
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Log.Debug(LogTag, "Service Connected");
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// we will use this event to notify MainActivity when to start updating the UI
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LocationServiceConnected(this, e);
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};
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}
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public static Task StartLocationService()
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{
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if (_isRunning)
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return Task.FromResult(true);
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_isRunning = true;
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// Starting a service like this is blocking, so we want to do it on a background thread
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return Task.Run(() =>
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{
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// Start our main service
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Log.Debug("App", "Calling StartService");
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Android.App.Application.Context.StartService(new Intent(Android.App.Application.Context,
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typeof (GeolocationService)));
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// bind our service (Android goes and finds the running service by type, and puts a reference
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// on the binder to that service)
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// The Intent tells the OS where to find our Service (the Context) and the Type of Service
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// we're looking for (LocationService)
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var locationServiceIntent = new Intent(Android.App.Application.Context, typeof (GeolocationService));
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Log.Debug("App", "Calling service binding");
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// Finally, we can bind to the Service using our Intent and the ServiceConnection we
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// created in a previous step.
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Android.App.Application.Context.BindService(locationServiceIntent, LocationServiceConnection,
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Bind.AutoCreate);
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});
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}
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public static void StopLocationService()
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{
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try
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{
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if (!_isRunning)
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return;
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_isRunning = false;
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// Check for nulls in case StartLocationService task has not yet completed.
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Log.Debug("App", "StopLocationService");
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// Unbind from the LocationService; otherwise, StopSelf (below) will not work:
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if (LocationServiceConnection != null)
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{
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Log.Debug("App", "Unbinding from LocationService");
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Android.App.Application.Context.UnbindService(LocationServiceConnection);
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}
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// Stop the LocationService:
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if (Current.LocationService != null)
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{
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Log.Debug("App", "Stopping the LocationService");
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Current.LocationService.StopSelf();
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}
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}
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catch
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{
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}
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}
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#endregion
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}
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}
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@ -0,0 +1,116 @@
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// Copyright (c) Microsoft Corporation. All rights reserved.
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// Licensed under the MIT license. See LICENSE file in the project root for details.
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using Android.App;
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using Android.OS;
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using Android.Content;
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using MyDriving.ViewModel;
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using System;
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using Android.Support.V4.App;
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namespace MyDriving.Droid.Services
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{
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public class GeolocationServiceBinder : Binder
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{
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public GeolocationServiceBinder(GeolocationService service)
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{
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Service = service;
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}
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public GeolocationService Service { get; }
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public bool IsBound { get; set; }
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}
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[Service]
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public class GeolocationService : Service
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{
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IBinder binder;
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public CurrentTripViewModel ViewModel { get; private set; }
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public override IBinder OnBind(Intent intent)
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{
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binder = new GeolocationServiceBinder(this);
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return binder;
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}
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public override StartCommandResult OnStartCommand(Intent intent, StartCommandFlags flags, int startId)
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{
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var builder = new NotificationCompat.Builder(this);
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var newIntent = new Intent(this, typeof (MainActivity));
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newIntent.PutExtra("tracking", true);
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newIntent.AddFlags(ActivityFlags.ClearTop);
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newIntent.AddFlags(ActivityFlags.SingleTop);
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var pendingIntent = PendingIntent.GetActivity(this, 0, newIntent, 0);
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var notification = builder.SetContentIntent(pendingIntent)
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.SetSmallIcon(Resource.Drawable.ic_notification)
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.SetAutoCancel(false)
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.SetTicker("MyDriving is recording.")
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.SetContentTitle("MyDriving")
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.SetContentText("MyDriving is recording your current trip.")
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.Build();
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StartForeground((int) NotificationFlags.ForegroundService, notification);
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ViewModel = new CurrentTripViewModel();
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return StartCommandResult.Sticky;
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}
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public void StartLocationUpdates()
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{
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ViewModel.StartTrackingTripCommand.Execute(null);
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}
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public void StopLocationUpdates()
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{
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ViewModel.StopTrackingTripCommand.Execute(null);
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}
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}
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public class GeolocationServiceConnection : Java.Lang.Object, IServiceConnection
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{
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public GeolocationServiceConnection(GeolocationServiceBinder binder)
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{
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if (binder != null)
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{
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Binder = binder;
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}
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}
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public GeolocationServiceBinder Binder { get; set; }
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public void OnServiceConnected(ComponentName name, IBinder service)
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{
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var serviceBinder = service as GeolocationServiceBinder;
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if (serviceBinder == null)
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return;
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Binder = serviceBinder;
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Binder.IsBound = true;
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// raise the service bound event
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ServiceConnected?.Invoke(this, new ServiceConnectedEventArgs {Binder = service});
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// begin updating the location in the Service
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serviceBinder.Service.StartLocationUpdates();
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}
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public void OnServiceDisconnected(ComponentName name)
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{
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Binder.IsBound = false;
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}
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public event EventHandler<ServiceConnectedEventArgs> ServiceConnected;
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}
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public class ServiceConnectedEventArgs : EventArgs
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{
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public IBinder Binder { get; set; }
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}
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}
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