flutterdevicelib's Introduction

qnsdk

qnsdk is yolanda Company smart device communication plug-in.

Usage

To use this plugin, add qnsdk as a dependency in your pubspec.yaml file.

Getting Started

Xcode configuration

iOS10.0 and above must have Bluetooth instructions in Info.plist, otherwise the system's Bluetooth function cannot be used
iOS13.0 and above must be configured with the authorization instructions for Bluetooth in Info.plist, otherwise it will be found to crash.
There is a pair in the Info.plist [Privacy - Bluetooth Peripheral Usage Description][privacy - bluetooth always usage description] button.

Android

Support Android 4.3 system above
Using androidx libraries in your project
Android 6.0 above requires authorized location rights

Sample Usage

Initialising

 String configFileContent = await rootBundle.loadString('data/123456789.qn');
 qnApi.initSDK('123456789', configFileContent).then((result) => print('initSDK ${result.errorCode}'));

Set up listening

 qnApi.setBleStateListener(this);
 qnApi.setBleDeviceDiscoveryListener(this);
 qnApi.setBleConnectionChangeListener(this);
 qnApi.setScaleDataListener(this);

Start scanning

 qnApi.startBleDeviceDiscovery();

Connection

 qnApi.connectDevice(device,user);

Receive data

 @override
  void onGetUnsteadyWeight(QNBleDevice device, double weight) {
    unsteadyWeightStream.add(weight);
  }

  @override
  void onGetScaleData(QNBleDevice device, QNScaleData data) {
    scaleDataStream.add(data);
  }

  @override
  void onGetStoredScale(
      QNBleDevice device, List<QNScaleStoreData> storedDataList) {
    for (var item in storedDataList) {
      storedDataStream.add(item);
    }
  }

  @override
  void onScaleStateChange(QNBleDevice device, int scaleState) {
    deviceStateStream.add(scaleState);
  }

Recommend Projects