Windows had the largest share of the global smartphone operating system market as of March 2012 with 34% market share, followed by Android with 30% and iOS with 25%. The document provides code examples for checking if an app is running in a trial mode and how to prompt users to purchase the full version before unlocking additional features. It also shows how to load product listings and handle in-app purchases if the app is not in trial mode.

1. 00

12. As of March 2012, IDC
690+M
Windows
345M
Android
196M
iOS
32M
Mac

19. Windows Phone Developer blog, March 2011

20. Time limited
Feature differentiated

21. /* No code*/

22. Trial Conversion
// get current product
var currentProduct = Windows.ApplicationModel.Store.CurrentApp;
// get the license information
var licenseInformation = currentProduct.licenseInformation;
// check to see if the user has an active non-trial license
if (licenseInformation.isTrial) {
// user has trial version of the application
// prompt them to purchase before so we can enable full functionality
currentProduct.requestProductPurchaseAsync().then(
function () {
// Purchase succeeded
});
}

23. WindowsStoreProxy.xml

24. In-App Purchase
// can’t do in-app purchase in trial mode, must convert first
if (!appLicensingInformation.isTrial) {
//load the listings with all the products
currentApp.loadListingInformationAsync().then(
function (listing) {
//lookup a specific product
var product1 = listing.productListings.lookup("product1");
if (!product1.isActive) {
// purchase
currentApp.requestProductPurchaseAsync("product1").then(
enableProduct1 );
}
});

25. Microsoft Advertisement
Your own

26. www.windowsadvertising.com
321

27. 31 2
www.windowsadvertising.com