问题描述
当特征调用 ReadValueAsync 时,以下代码有时会引发 ObjectdisposedException。调试器说该特性有效。违规代码如下所示:
private async void OnAdvertisementReceived(bluetoothleadvertisementwatcher watcher,BluetoothLEAdvertisementReceivedEventArgs eventArgs)
{
slim.Wait();
BluetoothLEDevice bluetoothLEDevice = await BluetoothLEDevice.FromBluetoothAddressAsync(eventArgs.BluetoothAddress);
if (bluetoothLEDevice != null)
{
GattDeviceServicesResult servicesResult = await bluetoothLEDevice.GetGattServicesAsync();
foreach (GattDeviceService service in servicesResult.Services)
{
GattcharacteristicsResult characteristicsResult = await service.GetcharacteristicsAsync();
foreach (GattCharacteristic characteristic in characteristicsResult.characteristics)
{
if (characteristic.CharacteristicProperties.Equals(GattCharacteristicProperties.Read))
{
GattReadResult readResult = await characteristic.ReadValueAsync();
}
}
}
}
}
slim.Release();
}
解决方法
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