怎么实现原生主动给 flutter 发消息 about flutter_boost HOT 4 CLOSED

FlutterViewController *controller = (FlutterViewController *)self.window.rootViewController;
    
    /**********原生主动传值给flutter-Start**********/
    _nativeCount = 0;
    
    NSLog(@"原生实现 原生传值给flutter的通道标识");
    FlutterEventChannel *eventChannel = [FlutterEventChannel eventChannelWithName:@"https://www.jianshu.com/p/7dbbd3b4ce32" binaryMessenger:controller];
    //设置代理
    [eventChannel setStreamHandler:self];
    
    /**********原生主动传值给flutter-End**********/

[FlutterBoostPlugin.sharedInstance startFlutterWithPlatform:router onStart:^(FlutterViewController *vc) {
    
    FlutterMethodChannel *someChannel = [FlutterMethodChannel methodChannelWithName:@"channelName" binaryMessenger:vc];
    [someChannel setMethodCallHandler:^(FlutterMethodCall * _Nonnull call, FlutterResult  _Nonnull result) {
        if ([call.method isEqualToString:@"someMethod"]) {
            result(someResult);
        }else {
            result(FlutterMethodNotImplemented);
        }
    }];
}];