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Working with SubscriptionsApps that use subscriptions have some additional behaviors and considerations. Because subscriptions incorporate an element ... 阅读全文
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Restoring Purchased ProductsUsers restore transactions to maintain access to content they’ve already purchased. For example, when they upgrade to a ne... 阅读全文
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Delivering ProductsIn the final part of the purchase process, your app waits for the App Store to process the payment request, stores information abou... 阅读全文
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Requesting PaymentIn the second part of the purchase process, after the user has chosen to purchase a particular product, your app submits a payment r... 阅读全文
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Retrieving Product InformationIn the first part of the purchase process, your app retrieves information about its products from the App Store, present... 阅读全文
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Designing Your App’s ProductsAproductis something you want to sell in your app’s store. You create and configure products in iTunes Connect, and your ... 阅读全文
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About In-App PurchaseIn-App Purchase allows you to embed a store inside your app using the Store Kit framework. This framework connects to the App Sto... 阅读全文
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Managing Selections管理选择When users tap a row of a table view, usually something happens as a result. Another table view could slide into place, the row could display a checkmark, or some other action could be performed. The following sections describe how to respond to selections and how to make sele 阅读全文
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Event Delivery: The Responder Chain事件传递:响应链When you design your app, it’s likely that you want to respond to events dynamically. For example, a touch can occur in many different objects onscreen, and you have to decide which object you want to respond to a given event and understand how that object 阅读全文