In-App Purchase allows you to embed a store inside your app using the Store Kit framework. This framework connects to the App Store on your app’s behalf to securely process payments from users, prompting them to authorize payment. The framework then notifies your app, which provides the purchased items to users. Use In-App Purchase to collect payment for additional features and content.

內(nèi)置購(gòu)買使用 Store Kit 框架在應(yīng)用程序里內(nèi)置一個(gè)商店。該框架把你的應(yīng)用程序的行為連接到應(yīng)用商店來安全地處理用戶的支付，促使他們授權(quán)支付。然后框架給你的應(yīng)用程序發(fā)送通知，該應(yīng)用程序提供了用戶購(gòu)買的商品。使用內(nèi)置購(gòu)買可以為額外的功能和內(nèi)容提供支付。

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For example, using In-App Purchase, you can implement the following scenarios:

比如，使用內(nèi)置購(gòu)買，你可以實(shí)現(xiàn)以下內(nèi)容：

A basic version of your app with additional premium features

一個(gè)帶有額外高級(jí)功能的應(yīng)用程序的基礎(chǔ)版本。

A magazine app that lets users purchase and download new issues

一個(gè)可以讓用戶購(gòu)買和下載新刊的雜志應(yīng)用。

A game that offers new levels to explore

一個(gè)提供新關(guān)卡讓用戶攻克的游戲。

An online game that allows players to purchase virtual property

一個(gè)允許玩家購(gòu)買虛擬資產(chǎn)在線游戲。

At a Glance

概論

At a high level, the interactions between the user, your app, and the App Store during the In-App Purchase process take place in three stages, as shown in Figure I-1. First, the user navigates to your app’s store and your app displays its products. Second, the user selects a product to buy and the app requests payment from the App Store. Third, the App Store processes the payment and your app delivers the purchased product.

從高層次來說，內(nèi)置購(gòu)買過程處理期間，用戶，應(yīng)用程序和應(yīng)用商店之間的交互發(fā)生在三個(gè)階段，如圖 I-1。首先，用戶導(dǎo)航到你的應(yīng)用程序商店，你的應(yīng)用程序顯示其產(chǎn)品。其次，用戶選擇一個(gè)產(chǎn)品購(gòu)買，應(yīng)用程序從應(yīng)用商店請(qǐng)求支付。最后，應(yīng)用商店處理該支付，你的應(yīng)用程序傳遞被購(gòu)產(chǎn)品。

Figure I-1 Stages of the purchase process 圖 I-1 購(gòu)買過程的階段

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You Create and Configure Products in iTunes Connect

在 iTunes Connect 里創(chuàng)建和配置產(chǎn)品

Understanding what kinds of products and behaviors are supported by In-App Purchase lets you design your app and in-app store to make the best use of this technology.

理解內(nèi)置購(gòu)買支持哪些產(chǎn)品和行為讓你最大化使用該技術(shù)來設(shè)計(jì)應(yīng)用程序和內(nèi)置商店。

Relevant Chapter: “Designing Your App’s Products”

相關(guān)章節(jié)：“Designing Your App’s Products”

Your App Interacts with the App Store to Sell Products

應(yīng)用程序跟應(yīng)用商店交互來出售產(chǎn)品

All apps that use In-App Purchase need to implement the core functionality described in these chapters to let users make purchases and then deliver the purchased products.

所有使用內(nèi)置購(gòu)買的應(yīng)用程序都需要實(shí)現(xiàn)這些章節(jié)中描述的內(nèi)核功能，讓用戶可以購(gòu)買然后傳遞已購(gòu)的產(chǎn)品。

These development tasks need to be done in order. The relevant chapters introduce them in the order you implement them, and they’re listed in full in“Implementation Checklist.” To help plan your development, you may want to read the full checklist before you begin.

這些開發(fā)任務(wù)需要按順序完成。相關(guān)章節(jié)按照你實(shí)現(xiàn)它們的順序介紹，它們?cè)凇癐mplementation Checklist.”中有完整列表來幫助你計(jì)劃你的開發(fā)，你可以在開始前先閱讀完整的清單。

Relevant Chapters: “Retrieving Product Information,” “Requesting Payment,” “Delivering Products”

Subscriptions Require Additional Application Logic

訂閱需要更多應(yīng)用邏輯

Apps that offer subscriptions need to keep track of when the user has an active subscription, respond to expiration and renewal, and determine what content the user has access to.

提供訂閱的應(yīng)用程序需要隨時(shí)監(jiān)控用戶何時(shí)有一個(gè)活動(dòng)訂閱，響應(yīng)到期和續(xù)期，然后決定用戶訪問什么內(nèi)容。

Relevant Chapter: “Working with Subscriptions”

相關(guān)章節(jié)：“Working with Subscriptions”