Flu_Bluetooth

Flutter bluetooth 2023

Introducción

FlutterBlue es un complemento de bluetooth para Flutter , un nuevo SDK de aplicaciones para ayudar a los desarrolladores a crear aplicaciones multiplataforma modernas.

Bluetooth LE multiplataforma

FlutterBlue tiene como objetivo ofrecer lo mejor de ambas plataformas (iOS y Android). Con la instancia de FlutterBlue, puede buscar y conectarse a dispositivos cercanos ( BluetoothDevice ). Una vez conectado a un dispositivo, el objeto BluetoothDevice puede descubrir servicios ( BluetoothService ), características ( BluetoothCharacteristic ) y descriptores ( BluetoothDescriptor ). Luego, el objeto BluetoothDevice se usa para interactuar directamente con características y descriptores.

flutter_blue: ^0.8.0

-- USANDO ESTA ULTIMA VERSION TENEMOS QUE HACER VARIOS ARREGLOS PARA SU COMPATIBILIDAD

1.- Si inicias la depuracion o corres el proyecto, te va salir un error:

BUILD FAILED in 14s
┌─ Flutter Fix ─────────────────────────────────────────────────────────────────────────────────┐
│ The plugin flutter_blue requires a higher Android SDK version.                                │
│ Fix this issue by adding the following to the file                                            │
│ D:\FLUTTER2\Bluetooth_2\bluetooth_mmv2\FLUTTER_BLUETOOTH\flu_blue\android\app\build.gradle:   │
│ android {                                                                                     │
│   defaultConfig {                                                                             │
│     minSdkVersion 19                                                                          │
│   }                                                                                           │
│ }                                                                                             │
│                                                                                               │
│ Note that your app won't be available to users running Android SDKs below 19.                 │
│ Alternatively, try to find a version of this plugin that supports these lower versions of the │
│ Android SDK.                                                                                  │
│ For more information, see:                                                                    │
│ https://docs.flutter.dev/deployment/android#reviewing-the-gradle-build-configuration          │
└───────────────────────────────────────────────────────────────────────────────────────────────┘

Exception: Gradle task assembleDebug failed with exit code 1
Exited (sigterm)

2.- Te dirijes a

android\app\build.gradle

-- La falla te sale en "GrandleException"

def flutterRoot = localProperties.getProperty('flutter.sdk')
if (flutterRoot == null) {
throw new GradleException("Flutter SDK not found. Define location with flutter.sdk in the local.properties file.")
}

-- Lo reemplazas por "FileNotFoundException"

def flutterRoot = localProperties.getProperty('flutter.sdk')
if (flutterRoot == null) {
	throw new FileNotFoundException("Flutter SDK not found. Define location with flutter.sdk in the local.properties file.")
}

3.- ahora buscas "defaultConfig" dentro de "build.gradle"

defaultConfig {
    // TODO: Specify your own unique Application ID (https://developer.android.com/studio/build/application-id.html).
    applicationId "com.example.flutter_application_mmv2"
    // You can update the following values to match your application needs.
    // For more information, see: https://docs.flutter.dev/deployment/android#reviewing-the-gradle-build-configuration.
    minSdkVersion flutter.minSdkVersion
    targetSdkVersion flutter.targetSdkVersion
    versionCode flutterVersionCode.toInteger()
    versionName flutterVersionName

-- Cambias el "minSdkVersion" y "targetSdkVersion"

minSdkVersion 19
targetSdkVersion 30

defaultConfig {
    // TODO: Specify your own unique Application ID (https://developer.android.com/studio/build/application-id.html).
    applicationId "com.example.flutter_application_mmv2"
    // You can update the following values to match your application needs.
    // For more information, see: https://docs.flutter.dev/deployment/android#reviewing-the-gradle-build-configuration.
    minSdkVersion 19
    targetSdkVersion 30
    versionCode flutterVersionCode.toInteger()
    versionName flutterVersionName

4.- Estoy usando (Flutter (Channel stable, 3.7.7))

ingresas a pubspec.yaml y agregas 

flutter_blue: ^0.8.0

Murdiajo/flu_blue