小编use*_*179的帖子

我在iOS上运行我的React Native应用程序时收到警告:

未导出类RCTCxxModule.你忘记使用RCT_EXPORT_MODULE()吗？

我怎样才能解决这个问题？

我使用google places api来获取经度和纬度,但无法解析字典.我正在使用以下代码

 let lat = ((((dic["results"] as! AnyObject).value(forKey: "geometry") as AnyObject).value(forKey: "location") as AnyObject).value(forKey: "lat") as AnyObject).object(0) as! Double

错误:无法调用非功能类型的值'任何？!'

我还检查过nsdictionary而不是Anyobject但是没有用.任何人都可以知道如何正确地从上面的代码中获取lat.

回应:

{
results =     (
            {
        "address_components" =             (
                            {
                "long_name" = Palermo;
                "short_name" = Palermo;
                types =                     (
                    locality,
                    political
                );
            },
                            {
                "long_name" = "Province of Palermo";
                "short_name" = PA;
                types =                     (
                    "administrative_area_level_2",
                    political
                );
            },
                            {
                "long_name" = Sicily;
                "short_name" = Sicily;
                types =                     (
                    "administrative_area_level_1",
                    political
                );
            },
                            {
                "long_name" = Italy;
                "short_name" …