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In-app purchasing using Store Kit
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This chapter covers
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Setting up a sandbox testing environment Creating a simple store
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This chapter will be structured a little differently than ones prior. Rather than going over the Store Kit API, we ll demonstrate the topics for creating an in-app store by walking through a basic example. We ll look at how to set up a sandbox testing environment (to mimic selling actual items) and work through how to build the store interface. The Store Kit API allows you to sell various items within your application. The items sold are called products. These products may be virtual goods, services, or even subscriptions. All transactions are processed securely through iTunes without the user ever having to enter their payment information on the device. There are countless ways to add a store to your application, and how you do so depends entirely on your needs. In this chapter, we ll discuss one of those ways and give you the tools to implement your own store.
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Setting up a sandbox testing environment
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The example store you ll be creating will let users purchase iPhone backgrounds on their phone. Users will browse through the available products and purchase the ones they want to keep. When a background has been purchased, it will be saved to the user s camera roll so the user can use it on their device.
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18.1 Setting up a sandbox testing environment
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Prior to building a store into your application, you must set up the products and testing environment on iTunes Connect. This will allow you to simulate payment processing without charging your iTunes account each time. The major prerequisite for setting up products is that you must first add the application you want to test with to iTunes Connect at http://itunesconnect.apple.com. To do this, you must go through all the steps to submit your app for App Store approval. Keep in mind that you shouldn t upload a binary, so your application isn t accidently submitted to Apple before it s ready. The sample application we ve uploaded for this test is called RS Wallpaper. It has the bundle identifier com.rightsprite.wallpaper. You ll want to change this to something unique to you. It s important to use this reverse domain style when adding your bundle ID, because this is what iTunes uses to recognize your application. For example, if your website is www.foobar.com, and your application is called baz, your bundle identifier should be com.foobar.baz.
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18.1.1 Creating an iTunes test user
In order to test in Apple s sandbox (testing) environment, you must first set up a test iTunes account in iTunes Connect. The sandbox account functions exactly like a live one except that it doesn t bill your iTunes account. Attempting to log into the sandbox with your normal iTunes account will cause your iTunes account to become invalid. To create a test user, navigate to the Manage Users section in iTunes Connect. Figure 18.1 shows what this link looks like. When you re inside, iTunes Connect asks what type of user you want to create. Make sure you select In App Purchase Test User, as shown in figure 18.2.
Managing users in iTunes Connect
In App Purchase Test User
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In-app purchasing using Store Kit
Figure 18.3 The form to add a new test user
This user is created for the sole purpose of testing the sandbox store. Apple is picky about the information you use here, so be sure you don t use the information from your current iTunes account. If you don t have a ton of email addresses to test with, a good trick is to use Gmail. If you have a Gmail account, you can add +1, +2, and so on after your existing address to a create new one. For example, if your email address is manningreader@gmail.com, you can register for new accounts with the address manningreader+1@gmail.com, and all the mail will forward to manningreader@gmail.com. After you click the Add New User button, you re presented with the form shown in figure 18.3. A new test user must be created for each territory you want to test with. For example, if you want to test products in the U.S. App Store and the Chinese App Store, you ll need to create two separate users. That way, each user will see their localized version of your product. If you don t specify, your purchase will be available in all the app stores. After you ve added all your test users, navigate back to the iTunes Connect homepage.
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