如何將READ，NOTIFY屬性添加到Android BLE GATT Server中的自定義特徵？

Question

我在Nexus 9（作爲外設）託管GATT服務器。我能夠分別實現具有讀取屬性和通知屬性的特性。如何使用Read和Notify屬性託管特徵？

在下面的代碼讀取屬性實現：

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); 

完整的源代碼here

Answer 1

這些屬性按位，這樣你就可以做到以下幾點：

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