static async Task <IEnumerable <FilePickerResult> > PlatformPickAsync(PickOptions options, bool allowMultiple = false)
{
// we only need the permission when accessing the file, but it's more natural
// to ask the user first, then show the picker.
await Permissions.RequestAsync <Permissions.StorageRead>();
// Essentials supports >= API 19 where this action is available
var action = Intent.ActionOpenDocument;
var intent = new Intent(action);
intent.SetType("*/*");
intent.AddFlags(ActivityFlags.GrantPersistableUriPermission);
intent.PutExtra(Intent.ExtraAllowMultiple, allowMultiple);
var allowedTypes = options?.FileTypes?.Value?.ToArray();
if (allowedTypes?.Length > 0)
{
intent.PutExtra(Intent.ExtraMimeTypes, allowedTypes);
}
var pickerIntent = Intent.CreateChooser(intent, options?.PickerTitle ?? "Select file");
try
{
var result = await IntermediateActivity.StartAsync(pickerIntent, requestCodeFilePicker);
var resultList = new List <FilePickerResult>();
var clipData = new List <global::Android.Net.Uri>();
if (result.ClipData == null)
{
clipData.Add(result.Data);
}
else
{
for (var i = 0; i < result.ClipData.ItemCount; i++)
{
clipData.Add(result.ClipData.GetItemAt(i).Uri);
}
}
foreach (var contentUri in clipData)
{
Platform.AppContext.ContentResolver.TakePersistableUriPermission(
contentUri,
ActivityFlags.GrantReadUriPermission);
resultList.Add(new FilePickerResult(contentUri));
}
return(resultList);
}
catch (OperationCanceledException)
{
return(null);
}
}
static async Task <FileResult> PlatformPickAsync(MediaPickerOptions options, bool photo)
{
// We only need the permission when accessing the file, but it's more natural
// to ask the user first, then show the picker.
await Permissions.RequestAsync <Permissions.StorageRead>();
var intent = new Intent(Intent.ActionGetContent);
intent.SetType(photo ? FileSystem.MimeTypes.ImageAll : FileSystem.MimeTypes.VideoAll);
var pickerIntent = Intent.CreateChooser(intent, options?.Title);
try
{
string path = null;
void OnResult(Intent intent)
{
// The uri returned is only temporary and only lives as long as the Activity that requested it,
// so this means that it will always be cleaned up by the time we need it because we are using
// an intermediate activity.
path = FileSystem.EnsurePhysicalPath(intent.Data);
}
await IntermediateActivity.StartAsync(pickerIntent, Platform.requestCodeMediaPicker, onResult : OnResult);
return(new FileResult(path));
}
catch (OperationCanceledException)
{
return(null);
}
}
static async Task <Location> PlatformLocationAsync(GeolocationRequest request, CancellationToken cancellationToken)
{
await Permissions.RequestAsync <Permissions.LocationWhenInUse>();
var geolocator = new Geolocator
{
DesiredAccuracyInMeters = request.PlatformDesiredAccuracy
};
CheckStatus(geolocator.LocationStatus);
cancellationToken = Utils.TimeoutToken(cancellationToken, request.Timeout);
var location = await geolocator.GetGeopositionAsync().AsTask(cancellationToken);
return(location?.Coordinate?.ToLocation());
void CheckStatus(PositionStatus status)
{
switch (status)
{
case PositionStatus.Disabled:
case PositionStatus.NotAvailable:
throw new FeatureNotEnabledException("Location services are not enabled on device.");
}
}
}
internal virtual async Task <Stream> PlatformOpenReadAsync()
{
await Permissions.RequestAsync <Permissions.StorageRead>();
var stream = File.Open(FullPath, FileMode.Open, FileAccess.Read);
return(Task.FromResult <Stream>(stream).Result);
}
static async Task <IEnumerable <FileResult> > PlatformPickAsync(PickOptions options, bool allowMultiple = false)
{
// we only need the permission when accessing the file, but it's more natural
// to ask the user first, then show the picker.
await Permissions.RequestAsync <Permissions.StorageRead>();
// Essentials supports >= API 19 where this action is available
var action = Intent.ActionOpenDocument;
var intent = new Intent(action);
intent.SetType(FileSystem.MimeTypes.All);
intent.PutExtra(Intent.ExtraAllowMultiple, allowMultiple);
var allowedTypes = options?.FileTypes?.Value?.ToArray();
if (allowedTypes?.Length > 0)
{
intent.PutExtra(Intent.ExtraMimeTypes, allowedTypes);
}
var pickerIntent = Intent.CreateChooser(intent, options?.PickerTitle ?? "Select file");
try
{
var resultList = new List <FileResult>();
void OnResult(Intent intent)
{
// The uri returned is only temporary and only lives as long as the Activity that requested it,
// so this means that it will always be cleaned up by the time we need it because we are using
// an intermediate activity.
if (intent.ClipData == null)
{
var path = FileSystem.EnsurePhysicalPath(intent.Data);
resultList.Add(new FileResult(path));
}
else
{
for (var i = 0; i < intent.ClipData.ItemCount; i++)
{
var uri = intent.ClipData.GetItemAt(i).Uri;
var path = FileSystem.EnsurePhysicalPath(uri);
resultList.Add(new FileResult(path));
}
}
}
await IntermediateActivity.StartAsync(pickerIntent, Platform.requestCodeFilePicker, onResult : OnResult);
return(resultList);
}
catch (OperationCanceledException)
{
return(null);
}
}
/// <inheritdoc />
public async Task <PermissionStatus> RequestPermissionsAsync <T>()
where T : BasePermission, new()
{
return(await MainThread.InvokeOnMainThreadAsync(async() =>
{
var result = await EssentialsPermissions.RequestAsync <T>().ConfigureAwait(false);
return result.ToPermissionStatus();
}));
}
static async Task CheckSupportAsync()
{
if (!IsSupported)
{
throw new FeatureNotSupportedException();
}
await Permissions.RequestAsync <Permissions.Flashlight>();
}
static async Task <Location> PlatformLocationAsync(GeolocationRequest request, CancellationToken cancellationToken)
{
if (!CLLocationManager.LocationServicesEnabled)
{
throw new FeatureNotEnabledException("Location services are not enabled on device.");
}
await Permissions.RequestAsync <Permissions.LocationWhenInUse>();
// the location manager requires an active run loop
// so just use the main loop
CLLocationManager manager = null;
NSRunLoop.Main.InvokeOnMainThread(() => manager = new CLLocationManager());
var tcs = new TaskCompletionSource <CLLocation>(manager);
var listener = new SingleLocationListener();
listener.LocationHandler += HandleLocation;
cancellationToken = Utils.TimeoutToken(cancellationToken, request.Timeout);
cancellationToken.Register(Cancel);
manager.DesiredAccuracy = request.PlatformDesiredAccuracy;
manager.Delegate = listener;
#if __IOS__
// we're only listening for a single update
manager.PausesLocationUpdatesAutomatically = false;
#endif
manager.StartUpdatingLocation();
var clLocation = await tcs.Task;
return(clLocation?.ToLocation());
void HandleLocation(CLLocation location)
{
manager.StopUpdatingLocation();
tcs.TrySetResult(location);
}
void Cancel()
{
manager.StopUpdatingLocation();
tcs.TrySetResult(null);
}
}
static async Task <Location> PlatformLastKnownLocationAsync()
{
if (!CLLocationManager.LocationServicesEnabled)
{
throw new FeatureNotEnabledException("Location services are not enabled on device.");
}
await Permissions.RequestAsync <Permissions.LocationWhenInUse>();
var manager = new CLLocationManager();
var location = manager.Location;
return(location?.ToLocation());
}
/// <inheritdoc />
public async Task <PermissionStatus> RequestPermissionsAsync <T>()
where T : BasePermission, new()
{
return(await MainThread.InvokeOnMainThreadAsync(async() =>
{
if (typeof(T) == typeof(NotificationsPermission))
{
return await RequestNotificationPermissionAsync().ConfigureAwait(false);
}
var result = await EssentialsPermissions.RequestAsync <T>().ConfigureAwait(false);
return result.ToPermissionStatus();
}));
}
static async Task <Location> PlatformLastKnownLocationAsync()
{
await Permissions.RequestAsync <Permissions.LocationWhenInUse>();
var lm = Platform.LocationManager;
AndroidLocation bestLocation = null;
foreach (var provider in lm.GetProviders(true))
{
var location = lm.GetLastKnownLocation(provider);
if (location != null && IsBetterLocation(location, bestLocation))
{
bestLocation = location;
}
}
return(bestLocation?.ToLocation());
}
static async Task <FileResult> PlatformPickAsync(MediaPickerOptions options, bool photo)
{
// we only need the permission when accessing the file, but it's more natural
// to ask the user first, then show the picker.
await Permissions.RequestAsync <Permissions.StorageRead>();
var intent = new Intent(Intent.ActionGetContent);
intent.SetType(photo ? "image/*" : "video/*");
var pickerIntent = Intent.CreateChooser(intent, options?.Title);
try
{
var result = await IntermediateActivity.StartAsync(pickerIntent, Platform.requestCodeMediaPicker);
return(new FileResult(result.Data));
}
catch (OperationCanceledException)
{
return(null);
}
}
static async Task <Location> PlatformLocationAsync(GeolocationRequest request, CancellationToken cancellationToken)
{
await Permissions.RequestAsync <Permissions.LocationWhenInUse>();
var locationManager = Platform.LocationManager;
var enabledProviders = locationManager.GetProviders(true);
var hasProviders = enabledProviders.Any(p => !ignoredProviders.Contains(p));
if (!hasProviders)
{
throw new FeatureNotEnabledException("Location services are not enabled on device.");
}
// get the best possible provider for the requested accuracy
var providerInfo = GetBestProvider(locationManager, request.DesiredAccuracy);
// if no providers exist, we can't get a location
// let's punt and try to get the last known location
if (string.IsNullOrEmpty(providerInfo.Provider))
{
return(await GetLastKnownLocationAsync());
}
var tcs = new TaskCompletionSource <AndroidLocation>();
var allProviders = locationManager.GetProviders(false);
var providers = new List <string>();
if (allProviders.Contains(LocationManager.GpsProvider))
{
providers.Add(LocationManager.GpsProvider);
}
if (allProviders.Contains(LocationManager.NetworkProvider))
{
providers.Add(LocationManager.NetworkProvider);
}
if (providers.Count == 0)
{
providers.Add(providerInfo.Provider);
}
var listener = new SingleLocationListener(locationManager, providerInfo.Accuracy, providers);
listener.LocationHandler = HandleLocation;
cancellationToken = Utils.TimeoutToken(cancellationToken, request.Timeout);
cancellationToken.Register(Cancel);
// start getting location updates
// make sure to use a thread with a looper
var looper = Looper.MyLooper() ?? Looper.MainLooper;
foreach (var provider in providers)
{
locationManager.RequestLocationUpdates(provider, 0, 0, listener, looper);
}
var androidLocation = await tcs.Task;
if (androidLocation == null)
{
return(null);
}
return(androidLocation.ToLocation());
void HandleLocation(AndroidLocation location)
{
RemoveUpdates();
tcs.TrySetResult(location);
}
void Cancel()
{
RemoveUpdates();
tcs.TrySetResult(listener.BestLocation);
}
void RemoveUpdates()
{
for (var i = 0; i < providers.Count; i++)
{
locationManager.RemoveUpdates(listener);
}
}
}
static async Task <Location> PlatformLastKnownLocationAsync()
{
await Permissions.RequestAsync(PermissionType.LocationWhenInUse);
return(lastKnownLocation);
}
static async Task <Location> PlatformLocationAsync(GeolocationRequest request, CancellationToken cancellationToken)
{
await Permissions.RequestAsync <Permissions.LocationWhenInUse>();
Locator service = null;
var gps = Platform.GetFeatureInfo <bool>("location.gps");
var wps = Platform.GetFeatureInfo <bool>("location.wps");
if (gps)
{
if (wps)
{
service = new Locator(LocationType.Hybrid);
}
else
{
service = new Locator(LocationType.Gps);
}
}
else
{
if (wps)
{
service = new Locator(LocationType.Wps);
}
else
{
service = new Locator(LocationType.Passive);
}
}
var tcs = new TaskCompletionSource <bool>();
cancellationToken = Utils.TimeoutToken(cancellationToken, request.Timeout);
cancellationToken.Register(() =>
{
service?.Stop();
tcs.TrySetResult(false);
});
double KmToMetersPerSecond(double km) => km * 0.277778;
service.LocationChanged += (s, e) =>
{
if (e.Location != null)
{
lastKnownLocation.Accuracy = e.Location.Accuracy;
lastKnownLocation.Altitude = e.Location.Altitude;
lastKnownLocation.Course = e.Location.Direction;
lastKnownLocation.Latitude = e.Location.Latitude;
lastKnownLocation.Longitude = e.Location.Longitude;
lastKnownLocation.Speed = KmToMetersPerSecond(e.Location.Speed);
lastKnownLocation.Timestamp = e.Location.Timestamp;
}
service?.Stop();
tcs.TrySetResult(true);
};
service.Start();
await tcs.Task;
return(lastKnownLocation);
}
