无法弄清楚如何将字符串编码为 Google Static Map API iOS 的 URL

Question

我现在真的很绝望。我已经连续进行了 7 个小时的编码和调试，从弄清楚如何在 Google 静态地图中画一个圆圈，将代码从 PHP 和 Java 转换为 Swift，只是为了看看解决方案是否可行。

幸运的是，我很幸运，能够正确生成带有 Circle 的 Google 静态地图。但是，我现在的问题是如何将它（字符串 URL）正确编码为 URL。我已经尝试了我在 SO 上找到的几乎所有东西。

以下是我的日志中浏览器中的示例工作 URL：

WORKING GOOGLE STATIC MAP LINK

https://maps.googleapis.com/maps/api/staticmap?size=640x320&&path=color:0x2EB7FCDD%7Cweight:1%7Cfillcolor:0x2EB7FC80%7Cenc:umdxAip_bVFqARmA^iAl@aAt@w@`Ao@dAa@jASlAGlAFjARdA`@`An@t@v@l@`A^hARlAFpAGnASlA_@hAm@`Au@x@aAl@eA`@kARmAFmAGkASeAa@aAm@u@y@m@aA_@iASmA&key=AIzaSyDLDkhgnS5gUjlXl5Jqt8fxJq87Figz8co&zoom=15

我已经尝试了每个CharacterSet 将该字符串编码为 URL。

部分结果如下：

GPKit???????????? -- JobLocationTableViewCell 2017-08-04 19:55:53 +0000: -- HOST --> https%3A%2F%2Fmaps.googleapis.com%2Fmaps%2Fapi%2Fstaticmap%3Fsize=640x320&&path=color%3A0x2EB7FCDD%257Cweight%3A1%257Cfi ... &zoom=15
GPKit???????????? -- JobLocationTableViewCell 2017-08-04 19:55:53 +0000: -- QUERY --> https://maps.googleapis.com/maps/api/staticmap?size=640x320&&path=color:0x2EB7FCDD%257Cweight:1%257Cfillcolor:0x2EB7FC80%257Cenc:umdxAip_bVFqARmA%5EiAl@aAt@w@%60Ao@dAa@jASlAGlAFjARdA%60@%60An@t@v@l@%60A%5EhARlAFpAGnASlA_@hAm@%60Au@x@aAl@eA%60@kARmAFmAGkASeAa@aAm@u@y@m@aA_@iASmA&key=AIzaSyDLDkhgnS5gUjlXl5Jqt8fxJq87Figz8co&zoom=15
GPKit???????????? -- JobLocationTableViewCell 2017-08-04 19:55:53 +0000: -- WHITE SPACES --> %68%74%74%70%73%3A%2F%2F%6D%61%70%73%2E%67%6F%6F%67%6C%65%61%70%69%73%2E%63%6F%6D%2F%6D%61%70%73%2F%61%70%69%2F%73%74%61 ... 3D%31%35
GPKit???????????? -- JobLocationTableViewCell 2017-08-04 19:55:53 +0000: -- nonBaseCharacters --> %68%74%74%70%73%3A%2F%2F%6D%61%70%73%2E%67%6F%6F%67%6C%65%61%70%69%73%2E%63%6F%6D%2F%6D%61%70%73%2F%61%70%69%2F%73%74%61 ... 3D%31%35
GPKit???????????? -- JobLocationTableViewCell 2017-08-04 19:55:53 +0000: -- alphanumerics --> https%3A%2F%2Fmaps%2Egoogleapis%2Ecom%2Fmaps%2Fapi%2Fstaticmap%3Fsize%3D640x320%26%26path%3Dcolor%3A0x2EB7FCDD%257Cweigh ... oom%3D15
GPKit???????????? -- JobLocationTableViewCell 2017-08-04 19:55:53 +0000: -- urlFragmentAllowed --> https://maps.googleapis.com/maps/api/staticmap?size=640x320&&path=color:0x2EB7FCDD%257Cweight:1%257Cfillcolor:0x2EB7FC80%257Cenc:umdxAip_bVFqARmA%5EiAl@aAt@w@%60Ao@dAa@jASlAGlAFjARdA%60@%60An@t@v@l@%60A%5EhARlAFpAGnASlA_@hAm@%60Au@x@aAl@eA%60@kARmAFmAGkASeAa@aAm@u@y@m@aA_@iASmA&key=AIzaSyDLDkhgnS5gUjlXl5Jqt8fxJq87Figz8co&zoom=15
GPKit???????????? -- JobLocationTableViewCell 2017-08-04 19:55:53 +0000: -- decomposables --> %68%74%74%70%73%3A%2F%2F%6D%61%70%73%2E%67%6F%6F%67%6C%65%61%70%69%73%2E%63%6F%6D%2F%6D%61%70%73%2F%61%70%69%2F%73%74%61 ... 3D%31%35

这些都不适用于我的浏览器或图像下载功能。欢迎使用 Swift 或 Objective-C 的答案。

编辑：当然，我使用 URL 来下载生成的静态地图图像，就像这样（我使用的是一个名为 Kingfisher 的库）

let mapURL = URL(string: staticMapUrl.addingPercentEncoding(withAllowedCharacters: .urlQueryAllowed)!)
self.imageView_Map.kf.setImage(
    with: mapURL,
    placeholder: nil,
    options: [.transition(.fade(1))],
    progressBlock: { (receivedSize, totalSize) in
    }, completionHandler: { (_, _, _, _) in })

Answer 1

翠鸟文档说：

  let url = URL(string: "url_of_your_image")
  imageView.kf.setImage(with: url)

所以，你需要做的就是

  let url = URL(string: "https://maps.googleapis.com/maps/api/staticmap?size=640x320&&path=color:0x2EB7FCDD%7Cweight:1%7Cfillcolor:0x2EB7FC80%7Cenc:umdxAip_bVFqARmA%5EiAl@aAt@w@%60Ao@dAa@jASlAGlAFjARdA%60@%60An@t@v@l@%60A%5EhARlAFpAGnASlA_@hAm@%60Au@x@aAl@eA%60@kARmAFmAGkASeAa@aAm@u@y@m@aA_@iASmA&key=AIzaSyDLDkhgnS5gUjlXl5Jqt8fxJq87Figz8co&zoom=15")
  imageView.kf.setImage(with: url)

我看不出你需要编码什么。