[英]Bluetooth LE scanner Xamarin Android
我想用我的应用程序做的是能够读取扫描设备的特征。 我能够扫描设备,但扫描将继续接收它发现的任何内容。 所以我也想要一个过滤器。 我的结果的附加图片位于我的代码下方。
这是我的代码
using Robotics.Mobile.Core.Bluetooth.LE;
using Adapter = Robotics.Mobile.Core.Bluetooth.LE.Adapter;
var appContext = Application.Context;
_manager = (BluetoothManager)appContext.GetSystemService(BluetoothService); // ("bluetooth");
_adapter = _manager.Adapter;
_bleAdapter = new Adapter();
_bleAdapter.DeviceDiscovered += _bleAdapter_DeviceDiscovered;
_bleAdapter.ScanTimeoutElapsed += _bleAdapter_ScanTimeoutElapsed;
}
private void _bleAdapter_ScanTimeoutElapsed(object sender, EventArgs e)
{
_bleAdapter.StopScanningForDevices();
DisplayInformation("Bluetooth scan timeout elapsed, no ble devices were found");
}
private void _bleAdapter_DeviceDiscovered(object sender, DeviceDiscoveredEventArgs e)
{
var msg = string.Format(@"Device found: {0}
{1} - {2}", e.Device.Name, e.Device.ID, e.Device.Rssi);
DisplayInformation(msg);
}
private void ButtonScanBleClick(object sender, EventArgs e)
{
if (!_bleAdapter.IsScanning)
_bleAdapter.StartScanningForDevices();
}
private void DisplayInformation(string line)
{
_textboxResults.Text = $"{line}\r\n{_textboxResults.Text}";
Console.WriteLine(line);
}
我的输出结果图片在这里
如果我理解得很好,您需要对找到的设备进行一些过滤。 你必须写一个蓝牙扫描器回调,然后是这样的:
在回调中:
public void OnLeScan(BluetoothDevice device, int rssi, byte[] scanRecord)
{
if (device.Name != null)
{
EventScanDevice(device, rssi);
}
}
在主活动中:
List<string> scanList;
private void Scanner_EventScanDevice(BluetoothDevice device, int rssi)
{
if (!scanList.Contains(device.Name))
{
scanList.Add(device.Name + ", RSSI = " + rssi.ToString());
}
}
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