Set up kotlin

.metadata

@@ -1,26 +1,26 @@
 # This file tracks properties of this Flutter project.
 # Used by Flutter tool to assess capabilities and perform upgrades etc.
 #
-# This file should be version controlled.
+# This file should be version controlled and should not be manually edited.
 
 version:
-  revision: 74e4b092e5212ebf8292dde2a48d3da960c0920b
-  channel: beta
+  revision: "8fcb74dbc16b9edb3d3f14c11c627d9e8f24fb1f"
+  channel: "beta"
 
 project_type: plugin
 
 # Tracks metadata for the flutter migrate command
 migration:
   platforms:
     - platform: root
-      create_revision: 74e4b092e5212ebf8292dde2a48d3da960c0920b
-      base_revision: 74e4b092e5212ebf8292dde2a48d3da960c0920b
+      create_revision: 8fcb74dbc16b9edb3d3f14c11c627d9e8f24fb1f
+      base_revision: 8fcb74dbc16b9edb3d3f14c11c627d9e8f24fb1f
     - platform: android
-      create_revision: 74e4b092e5212ebf8292dde2a48d3da960c0920b
-      base_revision: 74e4b092e5212ebf8292dde2a48d3da960c0920b
+      create_revision: 8fcb74dbc16b9edb3d3f14c11c627d9e8f24fb1f
+      base_revision: 8fcb74dbc16b9edb3d3f14c11c627d9e8f24fb1f
     - platform: ios
-      create_revision: 74e4b092e5212ebf8292dde2a48d3da960c0920b
-      base_revision: 74e4b092e5212ebf8292dde2a48d3da960c0920b
+      create_revision: 8fcb74dbc16b9edb3d3f14c11c627d9e8f24fb1f
+      base_revision: 8fcb74dbc16b9edb3d3f14c11c627d9e8f24fb1f
 
   # User provided section
 

android/build.gradle

@@ -1,45 +1,63 @@
 group 'studio.midoridesign.gal'
-version '1.0'
+version '1.0-SNAPSHOT'
 
 buildscript {
+    ext.kotlin_version = '1.7.10'
     repositories {
         google()
         mavenCentral()
     }
 
     dependencies {
         classpath 'com.android.tools.build:gradle:7.3.0'
+        classpath "org.jetbrains.kotlin:kotlin-gradle-plugin:$kotlin_version"
     }
 }
 
-rootProject.allprojects {
+allprojects {
     repositories {
         google()
         mavenCentral()
     }
 }
 
 apply plugin: 'com.android.library'
+apply plugin: 'kotlin-android'
 
 android {
-    compileSdkVersion 33
+    if (project.android.hasProperty("namespace")) {
+        namespace 'studio.midoridesign.gal'
+    }
+
+    compileSdkVersion 31
 
     compileOptions {
         sourceCompatibility JavaVersion.VERSION_1_8
         targetCompatibility JavaVersion.VERSION_1_8
     }
 
+    kotlinOptions {
+        jvmTarget = '1.8'
+    }
+
+    sourceSets {
+        main.java.srcDirs += 'src/main/kotlin'
+        test.java.srcDirs += 'src/test/kotlin'
+    }
+
     defaultConfig {
         minSdkVersion 19
     }
 
     dependencies {
-        testImplementation 'junit:junit:4.13.2'
+        testImplementation 'org.jetbrains.kotlin:kotlin-test'
         testImplementation 'org.mockito:mockito-core:5.0.0'
     }
 
     testOptions {
         unitTests.all {
+            useJUnitPlatform()
+
             testLogging {
                events "passed", "skipped", "failed", "standardOut", "standardError"
                outputs.upToDateWhen {false}

android/src/main/kotlin/studio/midoridesign/gal/GalPlugin.kt

@@ -0,0 +1,35 @@
+package studio.midoridesign.gal
+
+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
+
+/** GalPlugin */
+class GalPlugin: 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(@NonNull flutterPluginBinding: FlutterPlugin.FlutterPluginBinding) {
+    channel = MethodChannel(flutterPluginBinding.binaryMessenger, "gal")
+    channel.setMethodCallHandler(this)
+  }
+
+  override fun onMethodCall(@NonNull call: MethodCall, @NonNull result: Result) {
+    if (call.method == "getPlatformVersion") {
+      result.success("Android ${android.os.Build.VERSION.RELEASE}")
+    } else {
+      result.notImplemented()
+    }
+  }
+
+  override fun onDetachedFromEngine(@NonNull binding: FlutterPlugin.FlutterPluginBinding) {
+    channel.setMethodCallHandler(null)
+  }
+}