bump gradle version and removed depreciation

android/build.gradle

@@ -40,5 +40,5 @@ android {
 }
 
 dependencies {
-    implementation "org.jetbrains.kotlin:kotlin-stdlib:$kotlin_version"
+    implementation "org.jetbrains.kotlin:kotlin-stdlib-jdk7:$kotlin_version"
 }

android/src/main/kotlin/mn/khankhulgun/flutter_map_arcgis/FlutterMapArcgisPlugin.kt

@@ -1,35 +1,17 @@
 package mn.khankhulgun.flutter_map_arcgis
 
-import androidx.annotation.NonNull;
+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
-import io.flutter.plugin.common.PluginRegistry.Registrar
 
 /** FlutterMapArcgisPlugin */
-public class FlutterMapArcgisPlugin: FlutterPlugin, MethodCallHandler {
+class FlutterMapArcgisPlugin: FlutterPlugin, MethodCallHandler {
   override fun onAttachedToEngine(@NonNull flutterPluginBinding: FlutterPlugin.FlutterPluginBinding) {
-    val channel = MethodChannel(flutterPluginBinding.getFlutterEngine().getDartExecutor(), "flutter_map_arcgis")
-    channel.setMethodCallHandler(FlutterMapArcgisPlugin());
-  }
-
-  // This static function is optional and equivalent to onAttachedToEngine. It supports the old
-  // pre-Flutter-1.12 Android projects. You are encouraged to continue supporting
-  // plugin registration via this function while apps migrate to use the new Android APIs
-  // post-flutter-1.12 via https://flutter.dev/go/android-project-migration.
-  //
-  // It is encouraged to share logic between onAttachedToEngine and registerWith to keep
-  // them functionally equivalent. Only one of onAttachedToEngine or registerWith will be called
-  // depending on the user's project. onAttachedToEngine or registerWith must both be defined
-  // in the same class.
-  companion object {
-    @JvmStatic
-    fun registerWith(registrar: Registrar) {
-      val channel = MethodChannel(registrar.messenger(), "flutter_map_arcgis")
-      channel.setMethodCallHandler(FlutterMapArcgisPlugin())
-    }
+    val channel = MethodChannel(flutterPluginBinding.binaryMessenger, "flutter_map_arcgis")
+    channel.setMethodCallHandler(FlutterMapArcgisPlugin())
   }
 
   override fun onMethodCall(@NonNull call: MethodCall, @NonNull result: Result) {

example/android/build.gradle

@@ -6,7 +6,7 @@ buildscript {
     }
 
     dependencies {
-        classpath 'com.android.tools.build:gradle:7.0.4'
+        classpath 'com.android.tools.build:gradle:7.1.2'
         classpath "org.jetbrains.kotlin:kotlin-gradle-plugin:$kotlin_version"
     }
 }

example/android/gradle/wrapper/gradle-wrapper.properties

@@ -3,4 +3,4 @@ distributionBase=GRADLE_USER_HOME
 distributionPath=wrapper/dists
 zipStoreBase=GRADLE_USER_HOME
 zipStorePath=wrapper/dists
-distributionUrl=https\://services.gradle.org/distributions/gradle-7.0.2-all.zip
+distributionUrl=https\://services.gradle.org/distributions/gradle-7.2-all.zip

example/pubspec.lock

@@ -130,6 +130,13 @@ packages:
       url: "https://pub.dartlang.org"
     source: hosted
     version: "0.12.11"
+  material_color_utilities:
+    dependency: transitive
+    description:
+      name: material_color_utilities
+      url: "https://pub.dartlang.org"
+    source: hosted
+    version: "0.1.3"
   meta:
     dependency: transitive
     description:
@@ -218,7 +225,7 @@ packages:
       name: test_api
       url: "https://pub.dartlang.org"
     source: hosted
-    version: "0.4.3"
+    version: "0.4.8"
   transparent_image:
     dependency: transitive
     description:

pubspec.lock

@@ -116,6 +116,13 @@ packages:
       url: "https://pub.dartlang.org"
     source: hosted
     version: "0.12.11"
+  material_color_utilities:
+    dependency: transitive
+    description:
+      name: material_color_utilities
+      url: "https://pub.dartlang.org"
+    source: hosted
+    version: "0.1.3"
   meta:
     dependency: transitive
     description:
@@ -204,7 +211,7 @@ packages:
       name: test_api
       url: "https://pub.dartlang.org"
     source: hosted
-    version: "0.4.3"
+    version: "0.4.8"
   transparent_image:
     dependency: transitive
     description: