Easy to use util for integrating InApp Purchases into iOS projects. Supports:

• purchases validation(local validation only)
• Apple-hosted content downloading

Additional thanks for Ruotger Skupin who shared receipt parsing and validation code here https://github.com/roddi/ValidateStoreReceipt

How it works: First of all clone the project. OpenSSL-Xcode submodule project used for building openssl lib, prodived by ZETETIC LLC(https://github.com/sqlcipher/openssl-xcode).

IAPManager have 2 targets, one for fast testing of InApp Purchases, another one for using within your project. For testing simple do following:

• In STAppDelegate.m replace <#HARDCODED_BUNDLEI_ID#> and <#HARDCODED_VERSION#> with values from your project
• In STAppDelegate.m replace <#IAP prductId#> with porductId that you want to test
• In STAppDelegate.m add following line into loadStoreWithCompletion: block to place your purchase: [[IAPManager sharedInstanse] placePaymentForProductWithId:@"<#IAP prductId#>"];. Do not forget to use the same <#IAP prductId#> that was used in addObserver:forProductWithId:performOnSuccessfulPurchase:performOnFailedPurchase call
• In IAPManager-Info.plist change Bundle version string, short and Bundle identifier to your own project values. Also change Provisioning Profile in IAPManager target Build Settings to your profile
• Run IAPManager target. Do not forget to use test iTunes account. After fetching products you will see purchase confirmation alert.

###Intergration into your project Drag IAPManager.xcodeproj into project tree, then open Project settings->Build Phases and add into Target Dependencies iapmanger. Then Open Link Binary With Libraries and add libiapmanager.a here. Now you are ready to use IAPManager!

Include header

#import "IAPManager.h"

Do not forget to add AppleIncRootCertificate.cer file into Copy Bundle Resources

Specify bundleId and versionString. Hardcode them instead of reading values from Info.plist file:

[IAPManager sharedInstanse].bundleId = @"com.companyname.productname";
[IAPManager sharedInstanse].versionString = @"1.0";

Specify list of porductIds by using followed methods:

addObserver:forProductWithId:performOnSuccessfulPurchase:performOnFailedPurchase:
addObserver:forProductsWithIds:performOnSuccessfulPurchase:performOnFailedPurchase:

Example:

[[IAPManager sharedInstanse] addObserver:self forProductWithId:@"remove_advertisement" performOnSuccessfulPurchase:^(SKPaymentTransaction *transaction) {
        //Handle successful purchase here
    } performOnFailedPurchase:^(SKPaymentTransaction *transaction) {
        //Handle failed purchase here
    }];

[[IAPManager sharedInstanse] addObserver:self forProductsWithIds:@[@"remove_advertisement", @"get_10_skins"] performOnSuccessfulPurchase:^(SKPaymentTransaction *transaction) {
        //Handle successful purchase here
    } performOnFailedPurchase:^(SKPaymentTransaction *transaction) {
        //Handle failed purchase here
    }];

After setting bundleId, versionString, adding blocks for observing call loadStoreWithCompletion to fetch available products. As a result compeltion block will be called with list of requested products and invalid products ids, if any:

[[IAPManager sharedInstanse] loadStoreWithCompletion:^(NSArray *validProducts, NSArray *invalidProductIds) {
    }];

###Adding observer for purchases with Apple-hosted content If you have IAP with content hosted on Apple's servers, use addObserver:forProductWithId:performOnSuccessfulPurchase:performOnFailedPurchase:performOnContentDownloaded: or addObserver:forProductsWithIds:performOnSuccessfulPurchase:performOnFailedPurchase:performOnContentDownloaded:. Once purchase succeed performOnSuccessfulPurchase block will be called, and any associated IAP downloads starts immediately. When download finishes - performOnContentDownloaded fires.

For many reasons download may fail. It can be out of disk space error, or lost internet, etc. For restoring unfinished downloads call restoreUnfinishedDownloads method. After download finishes you will receive result in performOnContentDownloaded block that was defined by one of the addObserver:… methods.

Do not forget to check error and contentURL parameters. error != nil or contentURL == nil means that download failed due to some reason.

###IMPORTANT Place [IAPManager sharedInstanse].bundleId = … [IAPManager sharedInstanse].versionString = … and all purchase observers before calling loadStoreWithCompletion

Placing purchase:

[[IAPManager sharedInstanse] placePaymentForProductWithId:@"remove_advertisement"];

On success or failure one of the blocks specified in addObserver:forProductWithId:performOnSuccessfulPurchase:performOnFailedPurchase: will be called.

If you requested for productId that you did not specify in one of addObserver:… methods, or for some reason loadStoreWithCompletion return not empty invalidProductIds then calling placePaymentForProductWithId: with one of the values from that list will return NO. Payment will not be queued, so …performOnFailedPurchase: block also not called. Please check return value from placePaymentForProductWithId:, or call canPlacePaymentForProductWithId: to make sure that specified product can be purchased.