first commit

android/src/main/AndroidManifest.xml

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+<manifest xmlns:android="http://schemas.android.com/apk/res/android"
+  package="com.example.max_print_plus">
+</manifest>

android/src/main/kotlin/com/example/max_print_plus/MaxPrintPlusPlugin.kt

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+package com.example.max_print_plus
+
+import androidx.annotation.NonNull
+
+import io.flutter.embedding.engine.plugins.FlutterPlugin
+import io.flutter.plugin.common.MethodCall
+import io.flutter.plugin.common.MethodChannel
+import io.flutter.plugin.common.MethodChannel.MethodCallHandler
+import io.flutter.plugin.common.MethodChannel.Result
+
+/** MaxPrintPlusPlugin */
+class MaxPrintPlusPlugin: FlutterPlugin, MethodCallHandler {
+  /// The MethodChannel that will the communication between Flutter and native Android
+  ///
+  /// This local reference serves to register the plugin with the Flutter Engine and unregister it
+  /// when the Flutter Engine is detached from the Activity
+  private lateinit var channel : MethodChannel
+
+  override fun onAttachedToEngine(flutterPluginBinding: FlutterPlugin.FlutterPluginBinding) {
+    channel = MethodChannel(flutterPluginBinding.binaryMessenger, "max_print_plus")
+    channel.setMethodCallHandler(this)
+  }
+
+  override fun onMethodCall(call: MethodCall, result: Result) {
+    if (call.method == "getPlatformVersion") {
+      result.success("Android ${android.os.Build.VERSION.RELEASE}")
+    } else {
+      result.notImplemented()
+    }
+  }
+
+  override fun onDetachedFromEngine(binding: FlutterPlugin.FlutterPluginBinding) {
+    channel.setMethodCallHandler(null)
+  }
+}

android/src/test/kotlin/com/example/max_print_plus/MaxPrintPlusPluginTest.kt

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+package com.example.max_print_plus
+
+import io.flutter.plugin.common.MethodCall
+import io.flutter.plugin.common.MethodChannel
+import kotlin.test.Test
+import org.mockito.Mockito
+
+/*
+ * This demonstrates a simple unit test of the Kotlin portion of this plugin's implementation.
+ *
+ * Once you have built the plugin's example app, you can run these tests from the command
+ * line by running `./gradlew testDebugUnitTest` in the `example/android/` directory, or
+ * you can run them directly from IDEs that support JUnit such as Android Studio.
+ */
+
+internal class MaxPrintPlusPluginTest {
+  @Test
+  fun onMethodCall_getPlatformVersion_returnsExpectedValue() {
+    val plugin = MaxPrintPlusPlugin()
+
+    val call = MethodCall("getPlatformVersion", null)
+    val mockResult: MethodChannel.Result = Mockito.mock(MethodChannel.Result::class.java)
+    plugin.onMethodCall(call, mockResult)
+
+    Mockito.verify(mockResult).success("Android " + android.os.Build.VERSION.RELEASE)
+  }
+}