要防止有人恶意阻止确认并因此退款购买,在Android Google Play Billing Library v2/v3中,可以使用如下方法:
BillingClient billingClient = BillingClient.newBuilder(context)
.setListener(purchasesUpdatedListener)
.build();
billingClient.startConnection(new BillingClientStateListener() {
@Override
public void onBillingSetupFinished(BillingResult billingResult) {
if (billingResult.getResponseCode() == BillingClient.BillingResponseCode.OK) {
// 验证支付是否成功
Purchase.PurchasesResult purchasesResult = billingClient.queryPurchases(BillingClient.SkuType.INAPP);
if (purchasesResult.getResponseCode() == BillingClient.BillingResponseCode.OK) {
List purchases = purchasesResult.getPurchasesList();
for (Purchase purchase : purchases) {
// 检查购买商品的状态
if (purchase.getPurchaseState() == Purchase.PurchaseState.PURCHASED) {
// 支付成功,继续购买流程
// ...
}
}
}
}
}
@Override
public void onBillingServiceDisconnected() {
// 连接断开时的操作
}
});
Purchase.PurchasesResult purchasesResult = billingClient.queryPurchases(BillingClient.SkuType.INAPP);
if (purchasesResult.getResponseCode() == BillingClient.BillingResponseCode.OK) {
List purchases = purchasesResult.getPurchasesList();
for (Purchase purchase : purchases) {
// 验证购买凭证的有效性
if (verifyPurchase(purchase)) {
// 购买凭证有效,继续后续操作
// ...
}
}
}
在上述代码示例中,verifyPurchase()
方法是用来验证购买凭证的有效性的自定义方法。你可以根据自己的需求来实现该方法,例如通过与服务器进行通信来验证购买凭证。
通过以上方法,可以防止有人恶意阻止确认并因此退款购买。