Hi!
I'm facing a issue trying to connect to a Bluetooth LE device.
I downloaded the Plugin.BLE and I used the sample included without any problem, I connect and read/write data.
Now, I try to deploy on my App, I follow the instructions on the github repository, add permissions to AndroidManifest.xml. , but when I execute adapter.StartScanningForDevicesAsync(), nothing happens, I don't get the list of devices. There are several devices all around and also the one I want to connect to.
This is my code
public partial class PageSettingsDevice : ContentPage
{
IBluetoothLE ble;
IAdapter adapter;
ObservableCollection deviceList;
IDevice device;
private CancellationTokenSource _cancellationTokenSource;
public PageSettingsDevice()
{
InitializeComponent();
ble = CrossBluetoothLE.Current;
adapter = CrossBluetoothLE.Current.Adapter;
deviceList = new ObservableCollection<IDevice>();
//adapter.DeviceDiscovered += _bleAdapterDeviceDiscovered;
}
private bool status()
{
var state = ble.State;
DisplayAlert("Notice", state.ToString(), "OK !");
if (state == BluetoothState.Off)
{
DisplayAlert("Atención", "Your Bluetooth is off ! Turn it on !", "Aceptar");
}
if (ble.State == BluetoothState.Off || ble.State == BluetoothState.TurningOff || ble.State == BluetoothState.Unauthorized || ble.State == BluetoothState.Unknown)
return false;
else
return true;
}
async void OnDiscoverDeviceBlueToothClicked(object sender, EventArgs e)
{
try
{
if (status())
{
adapter.DeviceDiscovered += (s, a) =>
{
if (device.Name.Contains("Coltech"))
adapter.ConnectToDeviceAsync(device);
};
//We have to test if the device is scanning
if (!ble.Adapter.IsScanning)
{
_cancellationTokenSource = new CancellationTokenSource();
adapter.ScanMode = ScanMode.LowLatency;
await adapter.StartScanningForDevicesAsync(null,null,false,_cancellationTokenSource.Token);
var list = adapter.ConnectedDevices;
}
}
}
catch (Exception ex)
{
DisplayAlert("Notice", ex.Message.ToString(), "Error !");
}
}
async void _bleAdapterDeviceDiscovered(object sender, DeviceEventArgs e)
{
if (device != null)
{
if (device.Name.Contains("Coltech"))
await adapter.ConnectToDeviceAsync(device);
}
}
}
Any help is wellcomed, thanks
