Flutter和iOS原生页面的相互跳转

import 'package:flutter/material.dart';
import 'package:flutter/services.dart';

void main() {
  runApp(MyApp());
}

class MyApp extends StatelessWidget {
  @override
  Widget build(BuildContext context) {
    return MaterialApp(
      home: Scaffold(
        appBar: AppBar(title: Text('Flutter to Native')),
        body: Center(
          child: ElevatedButton(
            onPressed: _navigateToNative,
            child: Text('Go to Native Page'),
          ),
        ),
      ),
    );
  }

  void _navigateToNative() async {
    const platform = MethodChannel('com.example/native');
    try {
      await platform.invokeMethod('navigateToNativePage');
    } on PlatformException catch (e) {
      print("Failed to navigate: ${e.message}");
    }
  }
}

#import <Flutter/Flutter.h>
#import <UIKit/UIKit.h>

@interface AppDelegate: UIResponder <UIApplicationDelegate>
@property (nonatomic, strong) FlutterViewController *flutterViewController;
@end

@implementation AppDelegate

- (BOOL)application:(UIApplication *)application didFinishLaunchingWithOptions:(NSDictionary *)launchOptions {
    self.flutterViewController = [[FlutterViewController alloc] initWithProject:nil nibName:nil bundle:nil];
    [GeneratedPluginRegistrant registerWithRegistry:self.flutterViewController];

    self.window = [[UIWindow alloc] initWithFrame:[[UIScreen mainScreen] bounds]];
    self.window.rootViewController = self.flutterViewController;
    [self.window makeKeyAndVisible];

    return [super application:application didFinishLaunchingWithOptions:launchOptions];
}

- (void)handleMethodCall:(FlutterMethodCall*)call result:(FlutterResult)result {
    if ([call.method isEqualToString:@"navigateToNativePage"]) {
        UIViewController *nativeViewController = [[UIViewController alloc] init];
        nativeViewController.view.backgroundColor = [UIColor whiteColor];
        [self.flutterViewController.navigationController pushViewController:nativeViewController animated:YES];
        result(nil);
    } else {
        result(FlutterMethodNotImplemented);
    }
}

@end