In-App Subscription: https://github.com/miraljaviya/InAppSubscriptionCompose
In this repository i'm going to show you how to integrate In-App Subscription of Google Play Billing version 6+ in 6 steps. I follow the officailly google docs, i'm not using any third-party library.
Pre-requisite
- Google Play Console Account
- Published App on Play Store
- Tester Device with GMS
Setup the in-app purchase subscription product in Google Play Console account
i have already created mine which are
Product ID: sub_premium
//Add the Google Play Billing Library dependency to your app's build.gradle file as shown:
dependencies {
def billingVersion = "6.0.1"
implementation "com.android.billingclient:billing-ktx:$billingVersion"
}//And Open Manifest File and add this permission
<uses-permission android:name="com.android.vending.BILLING" />
//Initialize a BillingClient with PurchasesUpdatedListener
private fun querySubscriptionPlans(
subscriptionPlanId: String,
) {
val queryProductDetailsParams =
QueryProductDetailsParams.newBuilder()
.setProductList(
ImmutableList.of(
QueryProductDetailsParams.Product.newBuilder()
.setProductId("github_sub")
.setProductType(BillingClient.ProductType.SUBS)
.build(),
)
)
.build()
billingClient.queryProductDetailsAsync(queryProductDetailsParams) { billingResult, productDetailsList ->
if (billingResult.responseCode == BillingResponseCode.OK) {
var offerToken = ""
val productDetails = productDetailsList.firstOrNull { productDetails ->
productDetails.subscriptionOfferDetails?.any {
if (it.basePlanId == subscriptionPlanId) {
offerToken = it.offerToken
true
} else {
false
}
} == true
}
productDetails?.let {
val productDetailsParamsList = listOf(
BillingFlowParams.ProductDetailsParams.newBuilder()
.setProductDetails(it)
.setOfferToken(offerToken)
.build()
)
val billingFlowParams = BillingFlowParams.newBuilder()
.setProductDetailsParamsList(productDetailsParamsList)
.build()
billingClient.launchBillingFlow(activity, billingFlowParams)
}
}
}
} private fun handlePurchase(purchase: Purchase) {
val consumeParams = ConsumeParams.newBuilder()
.setPurchaseToken(purchase.purchaseToken)
.build()
val listener = ConsumeResponseListener { billingResult, s -> }
billingClient.consumeAsync(consumeParams, listener)
if (purchase.purchaseState == Purchase.PurchaseState.PURCHASED) {
if (!purchase.isAcknowledged) {
val acknowledgePurchaseParams = AcknowledgePurchaseParams
.newBuilder()
.setPurchaseToken(purchase.purchaseToken)
.build()
billingClient.acknowledgePurchase(acknowledgePurchaseParams) { billingResult ->
if (billingResult.responseCode == BillingResponseCode.OK) {
_subscriptions.update {
val newList = it.toMutableList()
newList.addAll(purchase.products)
newList
}
}
}
}
}
}
fun hasSubscription() {
val queryPurchaseParams = QueryPurchasesParams.newBuilder()
.setProductType(BillingClient.ProductType.SUBS)
.build()
billingClient.queryPurchasesAsync(
queryPurchaseParams
) { result, purchases ->
when (result.responseCode) {
BillingResponseCode.OK -> {
for (purchase in purchases) {
if (purchase.purchaseState == Purchase.PurchaseState.PURCHASED) {
// User has an active subscription
_subscriptions.update {
val newList = it.toMutableList()
newList.addAll(purchase.products)
newList
}
return@queryPurchasesAsync
}
}
}
BillingResponseCode.USER_CANCELED -> {
// User canceled the purchase
}
else -> {
// Handle other error cases
}
}
// User does not have an active subscription
}
}
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