iPhone 应用程序 - 附加收费内容
我正在考虑开发一个应用程序，该应用程序将：
1）构成一组类似应用程序的一部分；和 2) 允许用户下载额外的收费内容。
如果有人能够向我指出以编程方式和实践方式讨论此方法的任何资源的方向（即 Apple 的要求以及概述该方法的代码示例），我将非常感激。
I was considering developing an application which would:
1) form part of a suite of similar applications; and
2) allow the user to download additional chargeable content.
I would be extremely grateful if somebody could point me in the direction of any resources where this approach is discussed programatically and practically (i.e. Apple's requirements for doing so as well as code samples outlining the appproach).
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我认为您想要的是在应用程序内购买，您可以从 应用内购买指南和 快速入门指南。我已经实施了这一点，发现它非常有效并且实施起来相当简单。
以编程方式，它使用 StoreKit 框架我在上面发布的指南中进行了描述。
如果您想解决应用程序套件的问题，您还可以运行交叉推广它们的广告，我见过 admob 用于此目的，它有一个内部广告功能，允许您在自己的应用程序中免费为自己的应用程序提供广告应用程序。
I think what you have in mind is In App purchases, you can start with the in app purchase guide from Apple and the quick start guide. I've implemented this and found it very effective and fairly simple to implement.
Programmatically it uses the StoreKit framework which is described in the guide I posted above.
If you want to address the suite of apps you can also run ads that cross promote them, I've seen admob used for this it has an in-house ad feature that allows you to serve ads for your own applications for free across your own apps.
您可以通过应用内购买对附加内容进行收费。阅读 paulthenerd 推荐的 Apple 应用内购买指南后，您还可以查看 ilime.com 和 Urbanairship.com。这些服务使应用内购买更容易实施。
You can charge for additional content with In App Purchases. After reading Apple's In App Purchase Guide as recommended by paulthenerd, you can also check out ilime.com and urbanairship.com. These are services which make In App Purchases easier to implement.