Bluetooth Low Energy Received Data Reader

Install

This project is a flutter plugin,so you use it by add dependencies in your pubspec.yaml.

dependencies:
  flutter:
    sdk: flutter
  ble_reader: ^0.1.0

$ flutter pub get

How to use

Please check the example app to see how to broadcast received data.

Getting Started

Android

You need to add the following permissions to your AndroidManifest.xml file:

<uses-permission android:name="android.permission.BLUETOOTH_SCAN" android:usesPermissionFlags="neverForLocation" />
<uses-permission android:name="android.permission.BLUETOOTH_CONNECT" />
<uses-permission android:name="android.permission.ACCESS_FINE_LOCATION" android:maxSdkVersion="30" />
<uses-permission android:name="android.permission.ACCESS_COARSE_LOCATION" android:maxSdkVersion="30" />

If you use BLUETOOTH_SCAN to determine location, modify your AndroidManfiest.xml file to include the following entry:

 <uses-permission android:name="android.permission.BLUETOOTH_SCAN" 
                     tools:remove="android:usesPermissionFlags"
                     tools:targetApi="s" />

If you use location services in your app, remove android:maxSdkVersion="30" from the location permission tags

Android ProGuard rules

In case you are using ProGuard add the following snippet to your proguard-rules.pro file:

-keep class com.signify.hue.** { *; }

This will prevent issues like #131.

iOS

For iOS it is required you add the following entries to the Info.plist file of your app. It is not allowed to access Core BLuetooth without this. See our example app on how to implement this. For more indepth details: Blog post on iOS bluetooth permissions

iOS13 and higher

• NSBluetoothAlwaysUsageDescription

iOS12 and lower

• NSBluetoothPeripheralUsageDescription

Usage

Import

Import plugin module where you need use.

import 'package:ble_reader/ble_reader.dart';

Initialization

Initializing the library should be done the following:

final bleReader = BleReader();

Setup connectivity and configure GATT server.

final result = await BleReader.setupConnection;
if (!result) throw Exception('error bitches!!');
// do something

StreamBuilder(
  stream: BleReader.receivedDataStream,
  initialData: 'None',
  builder: (BuildContext context, AsyncSnapshot<dynamic> snapshot) {
      return Text('Data received: ${snapshot.data}');
    },
  );