Flutter集成到已有iOS工程的方法步骤

flutter create --template module flutter_module

flutter_application_path'/Users/liuxinye/Desktop/WorkPro/AppGroup/platforms/xagf_flutter'
load File.join(flutter_application_path, '.ios', 'Flutter', 'podhelper.rb')

install_all_flutter_pods(flutter_application_path)

@import Flutter
@interface AppDelegate
@property (strong, nonatomic) FlutterEngine *flutterEngine;
@end

+(FlutterEngine *)initFlutter:(NSString*)entry :(NSString*)dartFile{
   FlutterEngine *flutterEngine =
     ((AppDelegate *)UIApplication.sharedApplication.delegate).flutterEngine;
  if (flutterEngine) {
    return flutterEngine;
  }else{
    flutterEngine = [[FlutterEngine alloc] initWithName:@"my flutter engine"];
    if(dartFile&&entry){
      //指定dartFile文件中entry方法启动flutter
      [flutterEngine runWithEntrypoint:entry libraryURI:dartFile];
    }else if (entry){
      //指定main.dart中方法名为entry的方法启动
      [flutterEngine runWithEntrypoint:entry];
    }else{
      //执行默认的main.dart文件中的main方法进行启动
      [flutterEngine run];
    }
    return flutterEngine;
  }
}

[[flutterEngine navigationChannel] invokeMethod:@"setInitialRoute"
                     arguments:@"/index"];

[GeneratedPluginRegistrant registerWithRegistry:flutterEngine];
FlutterViewController *flutterViewController =
    [[FlutterViewController alloc] initWithEngine:flutterEngine nibName:nil bundle:nil];