在iOS App中预览嵌入式链接就像Facebook一样 [英] Preview Embedded Links in iOS App Like Facebook
问题描述
我正试图以与Facebook相同的方式在iOS应用程序中嵌入链接预览：
我正试图找到一种方法来获取最合适的图像（和返回网址，网页标题，甚至是元描述并将其传回给应用程序，但我不确定最佳方式。
有一些API可以做到这一点，大部分价格，但似乎不应该这么困难。有什么想法？
您可以在服务器端或客户端执行此操作。
服务器端，您可以使用脚本（如您构建的脚本）来获取HTML页面的< head> 标记。 / p>
客户端你可以用NSURLConnection或像AFNetworking这样的库下载整个页面作为HTML（例如，Mashable是大约180KB），并用XML解析器解析它找到< head> 标记。
我建议你创建一个服务器脚本，这样你就可以重用它了在其他项目或其他平台上。
I'm trying to embed a link preview in an iOS application in the same way that Facebook does:
I'm trying to figure a way to grab the most suitable image (and return the url to it), the page title, and maybe even a meta description and pass it back to the application, but I'm unsure of the best way.
There are API's that do this, most for a price, but it seems like it should not be this difficult. Any thoughts?
You can do this server-side or client-side.
Server-side, you can use a script (like the one you've built) to grab the <head> tag of the HTML page.
Client-side you can download the whole page as HTML (as an example, Mashable is ~180KB) with NSURLConnection or a library like AFNetworking and parse it with a XML parser to find the <head> tag.
I suggest you to create a server script, so you can reuse it in other projects or other platforms.
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