android - 如何将 READ、NOTIFY 属性添加到 Android BLE GATT 服务器中的自定义特性？

Question

我在 Nexus 9 中托管了一个 GATT 服务器(作为外围设备)。我能够分别使用 Read 属性和 Notify 属性实现一个特性。如何承载具有读取和通知属性的特征？

在下面的代码中实现了读取属性:

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);

完整源代码 here

Answer 1

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
          );