private async void StartScan(Double seconds)
{
if (IsScanning)
{
return;
}
if (!IsAdapterEnabled)
{
m_dialogs.Toast("Cannot start scan, Bluetooth is turned off");
return;
}
StopScan();
IsScanning = true;
seconds = BleSampleAppUtils.ClampSeconds(seconds);
m_scanCancel = new CancellationTokenSource(TimeSpan.FromSeconds(seconds));
m_scanStopTime = DateTime.UtcNow.AddSeconds(seconds);
Log.Trace("Beginning device scan. timeout={0} seconds", seconds);
RaisePropertyChanged(nameof(ScanTimeRemaining));
Device.StartTimer(
TimeSpan.FromSeconds(1),
() =>
{
RaisePropertyChanged(nameof(ScanTimeRemaining));
return(IsScanning);
});
await m_bleAdapter.ScanForBroadcasts(
new ScanFilter().AddAdvertisedService("0000fe9a-0000-1000-8000-00805f9b34fb"),
peripheral =>
{
Device.BeginInvokeOnMainThread(
() =>
{
var temp = new BleDevice(peripheral);
var existing = FoundDevices.FirstOrDefault(d => d.Address == peripheral.Address.Select(b => b.EncodeToBase16String()).Join(":"));
if (existing != null)
{
existing.Update(temp.abs);
}
else
{
FoundDevices.Add(new BlePeripheralViewModel(temp));
}
});
},
m_scanCancel.Token);
IsScanning = false;
}
private async void StartScan(Double seconds)
{
if (IsScanning)
{
return;
}
if (!IsAdapterEnabled)
{
m_dialogs.Toast("Cannot start scan, Bluetooth is turned off");
return;
}
StopScan();
IsScanning = true;
seconds = BleSampleAppUtils.ClampSeconds(seconds);
m_scanCancel = new CancellationTokenSource(TimeSpan.FromSeconds(seconds));
m_scanStopTime = DateTime.UtcNow.AddSeconds(seconds);
Log.Trace("Beginning device scan. timeout={0} seconds", seconds);
RaisePropertyChanged(nameof(ScanTimeRemaining));
// RaisePropertyChanged of ScanTimeRemaining while scan is running
Device.StartTimer(
TimeSpan.FromSeconds(1),
() =>
{
RaisePropertyChanged(nameof(ScanTimeRemaining));
return(IsScanning);
});
await m_bleAdapter.ScanForBroadcasts(
// NOTE: You can provide a scan filter to look for particular devices, e.g.:
//new ScanFilter.Factory {AdvertisedManufacturerCompanyId = BleSampleAppUtils.COMPANY_ID_GOOGLE}.CreateFilter(),
peripheral =>
{
Device.BeginInvokeOnMainThread(
() =>
{
var existing = FoundDevices.FirstOrDefault(d => d.Equals(peripheral));
if (existing != null)
{
existing.Update(peripheral);
}
else
{
FoundDevices.Add(new BlePeripheralViewModel(peripheral, m_connectionFunc));
}
});
},
m_scanCancel.Token);
IsScanning = false;
}
private async void StartScan(Double seconds)
{
#if __ANDROID__
#endif
if (IsScanning)
{
return;
}
if (!IsAdapterEnabled)
{
m_dialogs.Toast("Cannot start scan, Bluetooth is turned off");
return;
}
StopScan();
IsScanning = true;
seconds = BleSampleAppUtils.ClampSeconds(seconds);
m_scanCancel = new CancellationTokenSource(TimeSpan.FromSeconds(seconds));
m_scanStopTime = DateTime.UtcNow.AddSeconds(seconds);
Log.Trace("Beginning device scan. timeout={0} seconds", seconds);
RaisePropertyChanged(nameof(ScanTimeRemaining));
// RaisePropertyChanged of ScanTimeRemaining while scan is running
Device.StartTimer(
TimeSpan.FromSeconds(1),
() =>
{
RaisePropertyChanged(nameof(ScanTimeRemaining));
return(IsScanning);
});
await m_bleAdapter.ScanForBroadcasts(
// NOTE:
//
// You can provide a scan filter to look for particular devices. See Readme.md for more information
// e.g.:
// new ScanFilter().SetAdvertisedManufacturerCompanyId( 224 /*Google*/ ),
//
// You can also specify additional scan settings like the amount of power to direct to the Bluetooth antenna:
// e.g.:
// new ScanSettings()
// {
// Mode = ScanMode.LowPower,
// Filter = new ScanFilter().SetAdvertisedManufacturerCompanyId( 224 /*Google*/ )
// },
peripheral =>
{
Device.BeginInvokeOnMainThread(
() =>
{
var existing = FoundDevices.FirstOrDefault(d => d.Equals(peripheral));
if (existing != null)
{
existing.Update(peripheral);
}
else
{
FoundDevices.Add(new BlePeripheralViewModel(peripheral, m_onSelectDevice));
}
});
},
m_scanCancel.Token);
IsScanning = false;
}
public async void StartScan(Double seconds)
{
FoundDevices.Clear();
notPairedDeviceTitle = "0";
if (IsScanning)
{
return;
}
if (!IsAdapterEnabled)
{
m_dialogs.Toast("Cannot start scan, Bluetooth is turned off");
return;
}
StopScan();
IsScanning = true;
seconds = BleSampleAppUtils.ClampSeconds(seconds);
m_scanCancel = new CancellationTokenSource(TimeSpan.FromSeconds(seconds));
m_scanStopTime = DateTime.UtcNow.AddSeconds(seconds);
Log.Trace("Beginning device scan. timeout={0} seconds", seconds);
RaisePropertyChanged(nameof(ScanTimeRemaining));
// RaisePropertyChanged of ScanTimeRemaining while scan is running
Device.StartTimer(
TimeSpan.FromSeconds(1),
() =>
{
RaisePropertyChanged(nameof(ScanTimeRemaining));
return(IsScanning);
});
await m_bleAdapter.ScanForBroadcasts(
peripheral =>
{
Device.BeginInvokeOnMainThread(
() =>
{
var existing = FoundDevices.FirstOrDefault(d => d.Equals(peripheral));
var addre = peripheral.Address.Select(b => b.EncodeToBase16String()).Join(":");
var deviceModel = App.Database.GetDevice(addre);
String deviceName = null;
if (App.Database.GetDevice(addre) != null)
{
deviceName = deviceModel.DeviceName;
}
if (existing != null)
{
existing.Update(peripheral);
}
else
{
if (peripheral.Advertisement.DeviceName != null && (deviceName != peripheral.Advertisement.DeviceName) && !IsExist(FoundDevices, addre))
{
FoundDevices.Add(new BlePeripheralViewModel(peripheral, m_onSelectDevice));
notPairedDeviceTitle = FoundDevices.Count.ToString();
}
if ((peripheral.Advertisement.DeviceName != null) && (deviceName == peripheral.Advertisement.DeviceName) && !IsExist(FoundConnectDevices, addre))
{
FoundConnectDevices.Add(new BlePeripheralViewModel(peripheral, m_onSelectDevice));
alreadyPairedDeviceTitle = FoundConnectDevices.Count.ToString();
}
}
});
},
m_scanCancel.Token);
//DeviceTitle = DeviceTitle + FoundConnectDevices.Count.ToString();
IsScanning = false;
}
private async void StartScan(Double seconds)
{
if (IsScanning)
{
return;
}
if (!IsAdapterEnabled)
{
m_dialogs.Toast("Cannot start scan, Bluetooth is turned off");
return;
}
StopScan();
IsScanning = true;
seconds = BleSampleAppUtils.ClampSeconds(seconds);
m_scanCancel = new CancellationTokenSource(TimeSpan.FromSeconds(seconds));
m_scanStopTime = DateTime.UtcNow.AddSeconds(seconds);
Log.Trace("Beginning device scan. timeout={0} seconds", seconds);
RaisePropertyChanged(nameof(ScanTimeRemaining));
// RaisePropertyChanged of ScanTimeRemaining while scan is running
Device.StartTimer(
TimeSpan.FromSeconds(1),
() =>
{
RaisePropertyChanged(nameof(ScanTimeRemaining));
return(IsScanning);
});
// 开始扫描附近的蓝牙 ble 设备.
await m_bleAdapter.ScanForBroadcasts(
// NOTE:
//
// You can provide a scan filter to look for particular devices. See Readme.md for more information
// e.g.:
// new ScanFilter().SetAdvertisedManufacturerCompanyId( 224 /*Google*/ ),
//
// You can also specify additional scan settings like the amount of power to direct to the Bluetooth antenna:
// e.g.:
new ScanSettings()
{
Mode = ScanMode.LowPower,
//Filter = new ScanFilter().SetAdvertisedManufacturerCompanyId(224 /*Google*/ )
Filter = new ScanFilter()
{
//只扫描 固定名字 的设备,但不知道怎么扫描 一个数组名字 的设备.
//AdvertisedDeviceName = "Cramer",
},
IgnoreRepeatBroadcasts = false
},
peripheral =>
{
Device.BeginInvokeOnMainThread(
() =>
{
// 扫描到设备，如果已经有了的，就更新，否则就添加.
var existing = FoundDevices.FirstOrDefault(d => d.Equals(peripheral));
if (existing != null)
{
existing.Update(peripheral);
}
else
{
System.Diagnostics.Debug.WriteLine("peripheral Name:" + peripheral.Advertisement.DeviceName);
FoundDevices.Add(new BlePeripheralViewModel(peripheral, m_onSelectDevice));
}
});
},
m_scanCancel.Token);
IsScanning = false;
}