inAppCheckSubscription (Function)

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Help / WLanguage / WLanguage functions / Mobile specific functions / In-App Purchase functions

Principle and implementation

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inAppCheckSubscription (Function)

In french: inAppVérifieAbonnement

When starting the iOS application, checks whether the In-App subscriptions have been renewed.

Example

// Code d'initialisation du projet
inAppCheckSubscription(VérifAbonnement)

PROCEDURE VérifAbonnement(bSuccès is boolean, Produit is inAppProduct)
IF NOT bSuccès THEN
	ToastDisplay(ErrorInfo())
	RETURN
ELSE
	// Appel de la fonction inAppListeAchat 
	// pour vérifier la date de début et fin de l'abonnement
END

Syntax

inAppCheckSubscription(<WLanguage procedure>)

<WLanguage procedure>: Procedure name

Name of the WLanguage procedure (also called "callback") executed if one of the subscriptions has been renewed. For more details on this procedure, see Parameters of the procedure used by inAppCheckSubscription.

Remarks

Principle and implementation

In iOS, you have the ability to create self-renewable subscriptions for the in-App purchases.

When this type of subscription expires, the subscription is automatically renewed by the AppStore. A new purchase transaction is automatically created and transmitted during the next application start. Therefore, this transaction must be supported by the application to take into account the subscription renewal.

inAppCheckSubscription must be called as soon as possible in the "Initialization" event of the project in order to process the subscription renewals. The procedure will be called as many times as the number of subscriptions to renew.