In-app purchasing is quite complex, you may as well use the Milkman Games one, it handles all the tricky things for you, and gives you sample code to follow.
Here’s some of the documentation, to give you a sense of what’s involved:
(Optional) Handling Apple-Hosted Downloadable Content
This is an an advanced user feature. Before implementing downloads of Apple-hosted content, note that:
• iOS 6 or higher is required. If you support iOS 4 or 5, you'll need an alternate strategy for hosting.
• You must create and upload the downloadable content using Xcode 4+, with the “In-App Purchase Content” product template. The Bundle Identifier needs to match that of the corresponding In-App Product in iTunes Connect. Upload it by choosing Product>Archive from the XCode menu.
• You should be familiar with the flash.filesystem.File API and the SecurityDomain restrictions that apply to iOS file management in Adobe AIR.
21. Optionally, Apple will host downloadable files for non-consumable items for you, if your app runs on iOS 6 or higher. You can determine if the application is capable of downloading Apple-Hosted content at runtime by using the StoreKit.storeKit.isHostedContentAvailable() method. If it returns false, the device is running an older version of iOS and no downloading will occur.
If it returns true, you can add listeners for the three download events dispatched by the extension:
if(!StoreKit.storeKit.isHostedContentAvailable())
{
trace("this device is not capable of downloading apple-hosted content.");
}
else {
StoreKit.storeKit.addEventListener(StoreKitEvent.DOWNLOAD_UPDATED,
onDownloadUpdated);
StoreKit.storeKit.addEventListener(StoreKitEvent.DOWNLOAD_FINISHED,
onDownloadFinished);
StoreKit.storeKit.addEventListener(StoreKitErrorEvent.DOWNLOAD_FAILED,
onDownloadFailed);
}
22. After a successful purchase of a non-consumable item that includes Apple-hosted downloadable content, the extension will automatically begin the download of the package from Apple's server. As the download progresses, StoreKitEvent.DOWNLOAD_UPDATED events will be periodically dispatched, indicating the progress of the download:
function onDownloadUpdated(e:StoreKitEvent):void
{
trace("downloading item: "+e.productId);
// e.downloadProgress is a 0-1.0 scale
trace("percent complete:"+(e.downloadProgress*100));
trace("seconds remaining:"+e.downloadTimeRemaining);
trace("content version:"+e.downloadVersion);
}
23.Whenthedownloadiscompleted,StoreKitEvent.DOWNLOAD_FINISHEDisdispatched. Theextension will automatically unpack the downloaded content into a subdirectory of your application's local storage path, and provide the location of the downloaded content in the downloadPath property of the event. You may then use the flash.filesystem.File object to access the files and process them in your app, or move them to a new location. In the example below, we look through the download directory and load any PNG files found on to the stage:
import flash.display.Loader;
import flash.filesystem.File;
import flash.system.ApplicationDomain;
import flash.system.LoaderContext;
import flash.system.SecurityDomain;
// dispatched when a download has finished
function onDownloadUpdated(e:StoreKitEvent):void
{
trace("finished downloading:"+e.productId);
var downloadDirectory:File=new File(e.downloadPath);
if (downloadDirectory.exists)
{
var contents:Array=theStuff.getDirectoryListing();
for each(var file:File in contents)
{
if (file.extension=="png")
{
var context:LoaderContext=new LoaderContext(true,
ApplicationDomain.currentDomain);
var loader:Loader=new Loader();
loader.load(new URLRequest(file.url),context);
} }
}
stage.addChild(loader);
}
24. You must also add an event listener for StoreKitErrorEvent.DOWNLOAD_FAILED, which will be dispatched if an error occurs with the download. You should be sure to include this listener to avoid errors halting your program:
// listen for ERROR response during a download
StoreKit.storeKit.addEventListener(StoreKitErrorEvent.DOWNLOAD_FAILED,
onDownloadFailed);
function onDownloadFailed(e:StoreKitErrorEvent):void
{
}
trace("something went wrong with the download: "+e.text);
10
Replies
AdChoices