orientation

ios/Classes/SensorPlugin.swift

@@ -0,0 +1,34 @@
+import CoreMotion
+import Flutter
+import UIKit
+
+@_cdecl("ux_device_orientation")
+public func ux_device_orientation() -> Int32 {
+    return SensorPlugin.shared?.currentIndex ?? 0
+}
+
+public class SensorPlugin: NSObject, NativePlugin {
+    fileprivate static var shared: SensorPlugin?
+    fileprivate var currentIndex: Int32 = 0
+
+    private let motion = CMMotionManager()
+
+    public func register(with registrar: FlutterPluginRegistrar) {
+        SensorPlugin.shared = self
+        guard motion.isDeviceMotionAvailable else { return }
+        motion.deviceMotionUpdateInterval = 1.0 / 10.0
+        motion.startDeviceMotionUpdates(to: .main) { [weak self] data, _ in
+            guard let self = self, let g = data?.gravity else { return }
+            if abs(g.z) > 0.8 { return }
+            let next: Int32
+            if abs(g.x) > abs(g.y) {
+                next = g.x < 0 ? 1 : 3
+            } else {
+                next = g.y < 0 ? 0 : 2
+            }
+            if next != self.currentIndex {
+                self.currentIndex = next
+            }
+        }
+    }
+}