78 lines
2.7 KiB
Swift
78 lines
2.7 KiB
Swift
import UIKit
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import Flutter
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@main
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@objc class AppDelegate: FlutterAppDelegate {
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// 动态方向掩码（默认竖屏）
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static var orientationMask: UIInterfaceOrientationMask = .portrait
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override func application(
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_ application: UIApplication,
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didFinishLaunchingWithOptions launchOptions: [UIApplication.LaunchOptionsKey: Any]?
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) -> Bool {
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let controller = window?.rootViewController as! FlutterViewController
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let channel = FlutterMethodChannel(name: "app.orientation",
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binaryMessenger: controller.binaryMessenger)
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channel.setMethodCallHandler { [weak self] call, result in
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guard let self = self else { return }
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if call.method == "setOrientation" {
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guard let arg = call.arguments as? String else {
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result(FlutterError(code: "BAD_ARGS", message: "need 'landscape' | 'portrait'", details: nil))
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return
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}
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// 先更新允许的方向掩码
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if arg == "landscape" {
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AppDelegate.orientationMask = .landscape
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} else if arg == "portrait" {
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AppDelegate.orientationMask = .portrait
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} else {
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result(FlutterError(code: "BAD_ARGS", message: "unknown arg", details: nil))
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return
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}
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// 再请求实际旋转
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if #available(iOS 16.0, *) {
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// 通知顶层 VC：其 supportedInterfaceOrientations 需要刷新
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self.window?.rootViewController?.setNeedsUpdateOfSupportedInterfaceOrientations()
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if let scene = self.window?.windowScene {
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let orientations: UIInterfaceOrientationMask =
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(arg == "landscape") ? .landscape : .portrait
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do {
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try scene.requestGeometryUpdate(.iOS(interfaceOrientations: orientations))
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} catch {
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result(FlutterError(code: "GEOMETRY_UPDATE_FAILED",
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message: error.localizedDescription, details: nil))
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return
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}
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}
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} else {
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let target: UIInterfaceOrientation =
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(arg == "landscape") ? .landscapeLeft : .portrait
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UIDevice.current.setValue(target.rawValue, forKey: "orientation")
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UIViewController.attemptRotationToDeviceOrientation()
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}
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result(true)
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} else {
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result(FlutterMethodNotImplemented)
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}
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}
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GeneratedPluginRegistrant.register(with: self)
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return super.application(application, didFinishLaunchingWithOptions: launchOptions)
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}
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// 关键：把当前的掩码提供给系统
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override func application(_ application: UIApplication,
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supportedInterfaceOrientationsFor window: UIWindow?)
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-> UIInterfaceOrientationMask {
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return AppDelegate.orientationMask
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}
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}
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