iPhone图标的技术要求和合理的主格式是什么？
我正在寻求为 iPhone 应用程序委托制作一个图标，并愿意向设计师提供技术要求。 另外，由于这也可以用作网站的徽标，因此我希望有一种可以重复使用和扩展的格式。
我应该向设计师提出哪些技术要求？苹果是否有这些技术的公开链接描述？ 它只是 57x57 和 150x150 png 还是还有更多？
另外，什么是合理的、最好是开放的、可扩展的主格式？ 我没有 Photoshop，也不想仅仅为了这个而得到它。
I'm looking to commission an icon for an iphone app, and would like to provide the designers with the technical requirements. Also, as this may also be used as a logo for the website I'd like to be have a format that I can reuse and scale myself.
What technical requirements should I give to the designer and does apple have a publically linkable description of these? Is it simply 57x57 and 150x150 png or is there more to it?
Also, what is a reasonable, preferably open, scalable master format to request? I don't have photoshop and don't want to get it just for this.
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iPhone 人机界面指南文档关于自定义图标和图像详细解释
The iPhone Human Interface Guidelines document about custom icons and images explains it in detail
我的图标设计师通常为我提供图标的矢量文件格式版本（通常是 Illustrator 文件）、512x512px TIFF 文件（提交给 Apple 以在 AppStore 中使用）和 57x57px PNG（用作实际图标）。应用程序图标）。
另外，如果您想摆脱大多数 iPhone 应用程序图标上看到的预渲染光泽位，请搜索 UIPrenderedIcon，这是您可以在应用程序的 Info.plist 文件中设置的标志。
您不需要为此专门使用 Photoshop 或 Illustrator，但您应该拥有一个可以永久保留的“主”文件，以防您需要另一位图形设计师对原始图标进行修改。
My icon designers typically provide me with a vector file format version of my icon (usually an Illustrator file), a 512x512px TIFF file (which is submitted to Apple for use in the AppStore), and a 57x57px PNG (which is used as the actual application icon).
Also, If you want to get rid of the pre-rendered glossy bit you'll see on most iPhone apps' icons, go search for UIPrerenderedIcon, which is a flag you can set in your app's Info.plist file.
You don't need to go get Photoshop or Illustrator just for this, but you should have a 'master' file that you can keep in perpetuity in case you ever need another graphics designer to make modifications to the original icon.