Make Plugin Controller not static so it creates new instance for each Flutter Engine

example/android/build.gradle

@@ -1,12 +1,12 @@
 buildscript {
-    ext.kotlin_version = '1.5.31'
+    ext.kotlin_version = '1.8.21'
     repositories {
         mavenCentral()
         google()
     }
 
     dependencies {
-        classpath 'com.android.tools.build:gradle:7.0.2'
+        classpath 'com.android.tools.build:gradle:7.2.0'
         classpath "org.jetbrains.kotlin:kotlin-gradle-plugin:$kotlin_version"
     }
 }

packages/reactive_ble_mobile/android/build.gradle

@@ -3,7 +3,7 @@ version '1.0-SNAPSHOT'
 
 buildscript {
     ext.detekt_version = '1.17.1'
-    ext.kotlin_version = '1.5.31'
+    ext.kotlin_version = '1.8.21'
     repositories {
         google()
         mavenCentral()
@@ -13,7 +13,7 @@ buildscript {
     }
 
     dependencies {
-        classpath 'com.android.tools.build:gradle:7.0.3'
+        classpath 'com.android.tools.build:gradle:7.2.0'
         classpath 'com.google.protobuf:protobuf-gradle-plugin:0.8.17'
         classpath "org.jetbrains.kotlin:kotlin-gradle-plugin:$kotlin_version"
         classpath "io.gitlab.arturbosch.detekt:detekt-gradle-plugin:$detekt_version"

packages/reactive_ble_mobile/android/src/main/kotlin/com/signify/hue/flutterreactiveble/ReactiveBlePlugin.kt

@@ -1,43 +1,25 @@
 package com.signify.hue.flutterreactiveble
 
-import android.content.Context
 import io.flutter.embedding.engine.plugins.FlutterPlugin
-import io.flutter.plugin.common.BinaryMessenger
 import io.flutter.plugin.common.MethodCall
 import io.flutter.plugin.common.MethodChannel
 import io.flutter.plugin.common.MethodChannel.Result
 
 class ReactiveBlePlugin : FlutterPlugin, MethodChannel.MethodCallHandler {
+    private val pluginController = PluginController()
+
     override fun onAttachedToEngine(binding: FlutterPlugin.FlutterPluginBinding) {
-        initializePlugin(binding.binaryMessenger, binding.applicationContext, this)
-    }
+        val channel = MethodChannel(binding.binaryMessenger, "flutter_reactive_ble_method")
+        channel.setMethodCallHandler(this)
 
-    override fun onDetachedFromEngine(binding: FlutterPlugin.FlutterPluginBinding) {
-        deinitializePlugin()
+        pluginController.initialize(binding.binaryMessenger, binding.applicationContext)
     }
 
-    companion object {
-        lateinit var pluginController: PluginController
-
-        @JvmStatic
-        private fun initializePlugin(
-            messenger: BinaryMessenger,
-            context: Context,
-            plugin: ReactiveBlePlugin
-        ) {
-            val channel = MethodChannel(messenger, "flutter_reactive_ble_method")
-            channel.setMethodCallHandler(plugin)
-            pluginController = PluginController()
-            pluginController.initialize(messenger, context)
-        }
-
-        @JvmStatic
-        private fun deinitializePlugin() {
-            pluginController.deinitialize()
-        }
+    override fun onDetachedFromEngine(binding: FlutterPlugin.FlutterPluginBinding) {
+        pluginController.deinitialize()
     }
 
     override fun onMethodCall(call: MethodCall, result: Result) {
         pluginController.execute(call, result)
     }
-}
+}