static Task <FileInfo[]> TakeMedia(string type, string action, bool enableMultipleSelection, Device.MediaCaptureSettings options)
{
var id = NextRequestId++;
var completionSource = new TaskCompletionSource <FileInfo[]>(id);
UIRuntime.CurrentActivity.StartActivity(CreateIntent(id, type, action, enableMultipleSelection, options));
void OnMediaPicked(MediaPickedEventArgs e)
{
GC.Collect();
PickerActivity.Picked.RemoveHandler(OnMediaPicked);
if (e.RequestId != id)
{
return;
}
if (e.Media.Any(x => !x.Exists()))
{
completionSource.TrySetResult(null);
}
else if (e.Error != null)
{
completionSource.SetException(e.Error);
}
else
{
completionSource.TrySetResult(e.Media);
}
}
PickerActivity.Picked.Handle(OnMediaPicked);
GC.Collect();
return(completionSource.Task);
}
static Intent CreateIntent(int id, string type, string action, bool enableMultipleSelection, Device.MediaCaptureSettings settings)
{
var result = new Intent(UIRuntime.CurrentActivity, typeof(PickerActivity))
.PutExtra("id", id)
.PutExtra("type", type)
.PutExtra("action", action)
.PutExtra(Intent.ExtraAllowMultiple, enableMultipleSelection)
.PutExtra("purge-camera-roll", settings.PurgeCameraRoll)
.SetFlags(ActivityFlags.NewTask);
if (settings.Camera == CameraOption.Front)
{
result.PutExtra("android.intent.extras.CAMERA_FACING", 1);
}
if (action == MediaStore.ActionVideoCapture)
{
if (settings.VideoMaxDuration.HasValue)
{
result.PutExtra(MediaStore.ExtraDurationLimit, (int)settings.VideoMaxDuration.Value.TotalSeconds);
}
if (settings.VideoQuality == VideoQuality.Low)
{
result.PutExtra(MediaStore.ExtraVideoQuality, 0);
}
else
{
result.PutExtra(MediaStore.ExtraVideoQuality, 1);
}
}
return(result);
}
