集成Google应用内支付或者订阅

要集成Google应用内支付先要了解文档

集成文档: https://developer.android.google.cn/google/play/billing/integrate

1.创建Google应用

Google play 应用平台: https://play.google.com/console/u/0/developers/6529195851168790505/app-list
创建完应用后进入应用详情这个里面创建订阅或者消耗类型商品获取商品ID用于代码中查询商品进行吊起Google支付
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2.付费使用测试卡

这个里面添加上你测试使用的Google账号然后回车添加后保存即可
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3.集成Google应用内支付或者订阅

先导入依赖库

implementation 'com.android.billingclient:billing:4.0.0'

然后初始化 BillingClient

private PurchasesUpdatedListener purchasesUpdatedListener = new PurchasesUpdatedListener() {@Overridepublic void onPurchasesUpdated(BillingResult billingResult, List<Purchase> purchases) {// 支付后回调}
};private BillingClient billingClient = BillingClient.newBuilder(context).setListener(purchasesUpdatedListener).enablePendingPurchases().build();

然后与Google建立连接并且查询商品然后吊起Google支付或者订阅
在这里要先搞清楚一点消耗品是购买商品一次性的非消耗品是订阅

billingClientAfter.startConnection(new BillingClientStateListener() {@SuppressLint("LongLogTag")@Overridepublic void onBillingServiceDisconnected() {// 连接断开Log.d(TAG, "onBillingServiceDisconnected: 连接断开");}@Overridepublic void onBillingSetupFinished(@NonNull BillingResult billingResult) {// 连接成功if (billingResult.getResponseCode() == BillingClient.BillingResponseCode.OK) {SkuDetailsParams.Builder params = SkuDetailsParams.newBuilder();List<String> skuList = new ArrayList<>();skuList.add(str);//str是商品IDskuList.add("gas");// 这个参数不能为空，值随便传if (//这里判断是商品订阅还是商品购买) {params.setSkusList(skuList).setType(BillingClient.SkuType.INAPP);//针对一次性商品} else {params.setSkusList(skuList).setType(BillingClient.SkuType.SUBS);//针对订阅}//商品查询billingClientAfter.querySkuDetailsAsync(params.build(), new SkuDetailsResponseListener() {@SuppressLint("LongLogTag")@Overridepublic void onSkuDetailsResponse(@NonNull BillingResult billingResult, @Nullable List<SkuDetails> list) {if (list != null && list.size() > 0) {for (SkuDetails skuDetails : list) {String sku = skuDetails.getSku();// 唤起GooglePay支付if (str.equals(sku)) {BillingFlowParams flowParams = BillingFlowParams.newBuilder().setSkuDetails(skuDetails).build();billingClientAfter.launchBillingFlow(ExhibitionPaymentActivity.this, flowParams);}}} else {Log.d(TAG, "onSkuDetailsResponse: 未找到订阅商品");}}});} else {// TODO 连接失败}}});

回调中还有一些内容我都列出来方便理解

private PurchasesUpdatedListener purchasesUpdatedListenerAfter = new PurchasesUpdatedListener() {@SuppressLint("LongLogTag")@Overridepublic void onPurchasesUpdated(BillingResult billingResult, List<Purchase> purchases) {int responseCode = billingResult.getResponseCode();if (responseCode == BillingClient.BillingResponseCode.OK && purchases != null) {for (Purchase purchase : purchases) {if (//这里判断是商品订阅还是商品购买)) {//这是消耗商品handlePurchaseBUY(purchase); //这个方法是说表明某件一次性商品已被消耗} else {//这是订阅商品handlePurchase(purchase);//这个方法是订阅判断用户是否以及订阅 如果没订阅就是用来确认交易商品}// 这里是获取支付后订单号String orderId = purchase.getOrderId();int purchaseState = purchase.getPurchaseState();//判断用户是否付款了 2代办 1付款 0未指定if (purchaseState == Purchase.PurchaseState.PURCHASED) {//用户如果付款了在这里面做其他操作//这是非常重要的一步就是结束商品回调 要是不加这一步 应用内如果有多处商品购买的代码 这个回调就会瞎跑 加上就行了billingClientAfter.endConnection();} else {UIUtils.showToast(getString(R.string.支付失败));}}Log.d(TAG, "onPurchasesUpdated: 支付完成");} else if (responseCode == BillingClient.BillingResponseCode.USER_CANCELED) {// Handle an error caused by a user cancelling the purchase flow.Log.d(TAG, "onPurchasesUpdated: 用户取消了支付");} else if (responseCode == BillingClient.BillingResponseCode.ITEM_ALREADY_OWNED) {// Handle an error caused by a user cancelling the purchase flow.Log.d(TAG, "onPurchasesUpdated: 商品已经购买过（重复购买了此商品，如果需要支持重复购买，需要将商品购买成功后消费掉）");} else {// Handle any other error codes.}}};

大部分内容都加注解了对照着Google集成都文档一看就明白了

//这是确认消耗类型商品被消耗都方法
void handlePurchaseBUY(Purchase purchase) {// Purchase retrieved from BillingClient#queryPurchasesAsync or your PurchasesUpdatedListener.// Verify the purchase.// Ensure entitlement was not already granted for this purchaseToken.// Grant entitlement to the user.ConsumeParams consumeParams =ConsumeParams.newBuilder().setPurchaseToken(purchase.getPurchaseToken()).build();ConsumeResponseListener listener = new ConsumeResponseListener() {@Overridepublic void onConsumeResponse(BillingResult billingResult, String purchaseToken) {if (billingResult.getResponseCode() == BillingClient.BillingResponseCode.OK) {// Handle the success of the consume operation.}}};billingClientAfter.consumeAsync(consumeParams, listener);}

//这是对于订阅商品的确认方法
AcknowledgePurchaseResponseListener acknowledgePurchaseResponseListenerAfter;void handlePurchase(Purchase purchase) {if (purchase.getPurchaseState() == Purchase.PurchaseState.PURCHASED) {if (!purchase.isAcknowledged()) {AcknowledgePurchaseParams acknowledgePurchaseParams =AcknowledgePurchaseParams.newBuilder().setPurchaseToken(purchase.getPurchaseToken()).build();billingClientAfter.acknowledgePurchase(acknowledgePurchaseParams, acknowledgePurchaseResponseListenerAfter);}}}