android - 如何在Android BLE GATT Server中将READ，NOTIFY属性添加到自定义特征？

我在Nexus 9（作为外围设备）中托管了GATT服务器。我可以用Read属性和Notify属性分别实现一个特性。如何使用“读取”和“通知”属性来承载特征？

在下面的代码中实现了Read属性：

final String  SERVICE_A = "0000fff0-0000-1000-8000-00805f9b34fb";
final String  CHAR_READ1 = "0000fff1-0000-1000-8000-00805f9b34fb";




BluetoothGattService previousService =
          mGattServer.getService( UUID.fromString(SERVICE_A));

if(null != previousService)
         mGattServer.removeService(previousService);



        BluetoothGattCharacteristic read1Characteristic = new BluetoothGattCharacteristic(
          UUID.fromString(CHAR_READ1),
          BluetoothGattCharacteristic.PROPERTY_READ,
          BluetoothGattCharacteristic.PERMISSION_READ
          );

read1Characteristic.setValue(read1Data.getBytes());
BluetoothGattService AService = new BluetoothGattService(
          UUID.fromString(SERVICE_A),
          BluetoothGattService.SERVICE_TYPE_PRIMARY);


        AService.addCharacteristic(read1Characteristic);

完整的源代码here

最佳答案

这些属性是按位的，因此您可以执行以下操作：

BluetoothGattCharacteristic read1Characteristic = new BluetoothGattCharacteristic(
          UUID.fromString(CHAR_READ1),
          BluetoothGattCharacteristic.PROPERTY_READ | BluetoothGattCharacteristic.PROPERTY_NOTIFY,
          BluetoothGattCharacteristic.PERMISSION_READ
          );