20240903 pre release

lib/services/motion_service.dart

@@ -0,0 +1,29 @@
+import 'package:flutter/services.dart';
+import 'dart:io';
+
+class MotionService {
+  static const MethodChannel _channel = MethodChannel('net.sumasen.gifunavi/motion');
+
+  static Future<void> startMotionUpdates() async {
+    if (Platform.isIOS) {
+      try {
+        await _channel.invokeMethod('startMotionUpdates');
+      } on PlatformException catch (e) {
+        print("Failed to start motion updates: '${e.message}'.");
+      }
+    } else{
+      // Android の場合は何もしない、またはAndroid向けの代替実装を行う
+      print("Motion updates not supported on this platform");
+    }
+  }
+
+  static Future<void> stopMotionUpdates() async {
+    if (Platform.isIOS) {
+      try {
+        await _channel.invokeMethod('stopMotionUpdates');
+      } on PlatformException catch (e) {
+        print("Failed to stop motion updates: '${e.message}'.");
+      }
+    }
+  }
+}