如何在Dart/Flutter中获取重定向URL? [英] How to get redirect URL in dart/flutter?

问题描述

我正在构建一个应用程序，该应用程序显示从source.unsplash拍摄的图像.我的请求网址是:

I'm building an app that shows an image taken from source.unsplash. My request url is:

https://source.unsplash.com/random/`$widthx$height`

然后，该服务重定向到一些适合我的宽度和高度的特定图像网址.

Then the service redirects to some specific image url picked fitting my width and height.

我可以通过以下方式显示图像:
Image.network(上面的网址)，
但是我无法访问代码中其他某些确实必要的新重定向URL.有办法吗?

I can show the image with:
Image.network(url above),
but I cannot access the new redirected url for some other parts of my code which is really necessary. Is there a way to get it?

预先感谢

我正在寻找的东西就像

Http.Response response = await Http.get(url);
print(response.finalRedirectURL);

推荐答案

如果您使用api.unsplash.com而不是源代码，那就更好了.

It would be better if you use api.unsplash.com and not source.

如果 followRedirects 为true，则根据文档无法获取最终重定向的URL，因此可能为此发布github问题.请参阅: https://pub.dev/documentation/http/latest/http/Response-class.html

If followRedirects is true, there's no way according to the docs to get the final redirected URL, so maybe post a github issue for this. See: https://pub.dev/documentation/http/latest/http/Response-class.html

我看到这种情况的唯一方法是使 followRedirects:false 成为响应头，并以 location 作为键，为您提供下一个重定向.您必须编写一个循环，直到状态码从302更改为其他内容为止.

The only way I see this happening is making followRedirects: false, will give you a response headers with location as a key that gives you the next redirect. You'd have to write a loop to keep going till the status code changes from 302 to something else.

希望这会有所帮助.

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