如何将变量从flutter传递到本机目标c

import 'package:flutter/services.dart';

// 创建MethodChannel对象
MethodChannel _channel = MethodChannel('your_channel_name');

// 传递变量到本机C
String variable = 'your_variable';
_channel.invokeMethod('your_method_name', variable);

#include <flutter_linux/flutter_linux.h>

// 定义方法名
#define YOUR_METHOD_NAME "your_method_name"

// 注册Flutter插件
void your_plugin_register_with_registrar(FlPluginRegistrar* registrar) {
  // 注册方法调用处理函数
  g_autoptr(FlStandardMethodCodec) codec = fl_standard_method_codec_new();
  g_autoptr(FlMethodChannel) channel = fl_method_channel_new(fl_plugin_registrar_get_messenger(registrar), YOUR_CHANNEL_NAME, FL_METHOD_CODEC(codec));
  fl_method_channel_set_method_call_handler(channel, your_method_name_handler, g_object_ref(channel), NULL);
}

// 处理Flutter调用的方法
static void your_method_name_handler(FlMethodChannel* channel, FlMethodCall* method_call, gpointer user_data) {
  // 检查方法名
  const gchar* method = fl_method_call_get_name(method_call);
  if (strcmp(method, YOUR_METHOD_NAME) == 0) {
    // 获取传递的变量
    FlValue* variable_value = fl_method_call_get_args(method_call);
    if (FL_VALUE_TYPE_STRING == fl_value_get_type(variable_value)) {
      const gchar* variable = fl_value_get_string(variable_value);
      // 在这里处理传递的变量
    }
  }
}