public void StartAdapter()
{
CancelAllThreads();
lock (_foundDevices) { _foundDevices.Clear(); }
if (Adapter.IsDiscovering)
{
Adapter.CancelDiscovery();
}
State = BluetoothAdapterState.Created;
var missingPermissions = new List <string>();
if (_activity.CheckCallingOrSelfPermission(Manifest.Permission.AccessCoarseLocation) != Permission.Granted)
{
missingPermissions.Add(Manifest.Permission.AccessCoarseLocation);
}
if (_activity.CheckCallingOrSelfPermission(Manifest.Permission.AccessFineLocation) != Permission.Granted)
{
missingPermissions.Add(Manifest.Permission.AccessFineLocation);
}
if (_activity.CheckCallingOrSelfPermission(Manifest.Permission.Bluetooth) != Permission.Granted)
{
missingPermissions.Add(Manifest.Permission.Bluetooth);
}
if (_activity.CheckCallingOrSelfPermission(Manifest.Permission.BluetoothAdmin) != Permission.Granted)
{
missingPermissions.Add(Manifest.Permission.BluetoothAdmin);
}
if (missingPermissions.Any())
{
SAMLog.Warning("ABTA::MissingPerms", string.Join("|", missingPermissions.Select(p => p.Split('.').Last())));
if ((int)Build.VERSION.SdkInt >= 23)
{
// With API>23 I can request them here
// https://blog.xamarin.com/requesting-runtime-permissions-in-android-marshmallow/
_activity.RequestPermissions(missingPermissions.ToArray(), REQUEST_ENABLE_PERM);
}
State = BluetoothAdapterState.PermissionNotGranted;
return;
}
if (Adapter.IsEnabled)
{
State = BluetoothAdapterState.Active;
}
else
{
State = BluetoothAdapterState.RequestingEnable;
Intent enableIntent = new Intent(BluetoothAdapter.ActionRequestEnable);
_activity.StartActivityForResult(enableIntent, REQUEST_ENABLE_BT);
}
}