Task DoConnect()
{
return(Task.Run(() =>
{
bool success = NativeGatt.Connect();
_connectedHandle.WaitOne();
}));
}
public bool Transmit(BluetoothGattCharacteristicModel characteristicModel, byte[] buffer)
{
bool result = default;
if (_gatt.Connect())
{
var characteristic = _gatt.GetService(Java.Util.UUID.FromString(characteristicModel.ServiceUuid.ToString()))
.GetCharacteristic(Java.Util.UUID.FromString(characteristicModel.Uuid.ToString()));
characteristic.SetValue(buffer);
result = _gatt.WriteCharacteristic(characteristic);
}
return(result);
}
Task PlatformConnect()
{
TaskCompletionSource <bool> tcs = new TaskCompletionSource <bool>();
void handler(object s, ConnectionStateEventArgs e)
{
ConnectionStateChanged -= handler;
switch (e.Status)
{
case ABluetooth.GattStatus.Success:
tcs.SetResult(e.State == ABluetooth.ProfileState.Connected);
break;
default:
tcs.SetResult(false);
break;
}
}
ConnectionStateChanged += handler;
bool success = _gatt.Connect();
if (success)
{
if (IsConnected)
{
return(Task.FromResult(true));
}
return(tcs.Task);
}
else
{
ConnectionStateChanged -= handler;
return(Task.FromException(new OperationCanceledException()));
}
}
private void PerformConnectToDevice(IDevice device)
{
var bleDevice = device.NativeDevice as BluetoothDevice;
if (bleDevice == null)
return;
var remoteDevice = _adapter.GetRemoteDevice(bleDevice.Address);
if (remoteDevice == null)
return;
_gatt = remoteDevice.ConnectGatt(Android.App.Application.Context, false, _callback);
_gatt.Connect();
}
