BleManager.java 文件源码

@Override
public final void onCharacteristicChanged(final BluetoothGatt gatt, final BluetoothGattCharacteristic characteristic) {
    final String data = ParserUtils.parse(characteristic);

    if (isBatteryLevelCharacteristic(characteristic)) {
        Logger.i(mLogSession, "Notification received from " + characteristic.getUuid() + ", value: " + data);
        final int batteryValue = characteristic.getIntValue(BluetoothGattCharacteristic.FORMAT_UINT8, 0);
        Logger.a(mLogSession, "Battery level received: " + batteryValue + "%");
        mCallbacks.onBatteryValueReceived(batteryValue);
    } else {
        final BluetoothGattDescriptor cccd = characteristic.getDescriptor(CLIENT_CHARACTERISTIC_CONFIG_DESCRIPTOR_UUID);
        final boolean notifications = cccd == null || cccd.getValue() == null || cccd.getValue().length != 2 || cccd.getValue()[0] == 0x01;

        if (notifications) {
            Logger.i(mLogSession, "Notification received from " + characteristic.getUuid() + ", value: " + data);
            onCharacteristicNotified(gatt, characteristic);
        } else { // indications
            Logger.i(mLogSession, "Indication received from " + characteristic.getUuid() + ", value: " + data);
            onCharacteristicIndicated(gatt, characteristic);
        }
    }
}