This document discusses checking the license status of a Windows Phone app. It explains how to check if the app is in trial mode, and if so, prompt the user to purchase the full version. It also provides code to look up specific in-app products, check if they are active, and request purchase if not active.

5. demo

13. Windows Phone Developer blog, March 2011

16. // get current product
var currentProduct = Windows.ApplicationModel.Store.CurrentProduct;
// 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
});
}

17. demo

18. // 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 );
}
});

20. demo

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www.windowsadvertising.com

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