Android Billing库v4升级：如何将BillingFlowParams的sku()替换为setSkuDetails()

核心逻辑说明 #

Billing v4 要求必须通过querySkuDetailsAsync接口从Google Play查询获取SkuDetails对象，不可自行构造，再将该对象传入setSkuDetails方法完成支付参数配置。

实现步骤 #

1. 定义全局变量 #

先定义商品ID常量和存储SkuDetails的全局变量：

// 替换为你在Google Play后台配置的对应商品ID
private static final String SKU_MONTHLY = "monthly_sub_id";
private static final String SKU_YEARLY = "yearly_sub_id";
private static final String SKU_ONE_TIME = "one_time_inapp_id";

// 存储查询返回的商品详情对象
private SkuDetails monthlySkuDetails, yearlySkuDetails, oneTimeSkuDetails;
private BillingClient mBillingClient;

2. 新增SkuDetails查询方法 #

封装统一的商品查询方法：

private void querySkuDetails(String skuType, List<String> skuList) {
    SkuDetailsParams params = SkuDetailsParams.newBuilder()
            .setSkusList(skuList)
            .setType(skuType)
            .build();
    mBillingClient.querySkuDetailsAsync(params, (billingResult, skuDetailsList) -> {
        if (billingResult.getResponseCode() == BillingClient.BillingResponseCode.OK && skuDetailsList != null) {
            for (SkuDetails skuDetails : skuDetailsList) {
                String sku = skuDetails.getSku();
                if (SKU_MONTHLY.equals(sku)) {
                    monthlySkuDetails = skuDetails;
                    // 可在此处调用skuDetails.getPrice()获取商品价格展示到UI
                } else if (SKU_YEARLY.equals(sku)) {
                    yearlySkuDetails = skuDetails;
                } else if (SKU_ONE_TIME.equals(sku)) {
                    oneTimeSkuDetails = skuDetails;
                }
            }
        }
    });
}

3. 初始化成功后触发商品查询 #

修改onBillingSetupFinished回调逻辑，替换原有三个getPrices方法：

@Override
public void onBillingSetupFinished(@NonNull BillingResult billingResult) {
    if (billingResult.getResponseCode() == BillingClient.BillingResponseCode.OK) {
        // 查询订阅类商品
        querySkuDetails(BillingClient.SkuType.SUBS, Arrays.asList(SKU_MONTHLY, SKU_YEARLY));
        // 查询一次性内购商品
        querySkuDetails(BillingClient.SkuType.INAPP, Collections.singletonList(SKU_ONE_TIME));
    }
}

4. 支付点击事件中传入SkuDetails #

修改continue_button的点击逻辑，给setSkuDetails传入对应商品的SkuDetails对象，增加非空判断避免崩溃：

continue_button.setOnClickListener(view -> {
    if (select_radio_one.getVisibility() == View.VISIBLE) {
        if (monthlySkuDetails == null) {
            Toast.makeText(MainActivity.this, "商品信息加载中，请稍后重试", Toast.LENGTH_SHORT).show();
            return;
        }
        BillingFlowParams flowParams = BillingFlowParams.newBuilder()
                .setSkuDetails(monthlySkuDetails)
                .build();
        mBillingClient.launchBillingFlow(MainActivity.this, flowParams);
        brandDialogInAppPurchase.dismiss();
    } else if (select_radio_two.getVisibility() == View.VISIBLE) {
        if (yearlySkuDetails == null) {
            Toast.makeText(MainActivity.this, "商品信息加载中，请稍后重试", Toast.LENGTH_SHORT).show();
            return;
        }
        BillingFlowParams flowParams = BillingFlowParams.newBuilder()
                .setSkuDetails(yearlySkuDetails)
                .build();
        mBillingClient.launchBillingFlow(MainActivity.this, flowParams);
        brandDialogInAppPurchase.dismiss();
    } else if (select_radio_three.getVisibility() == View.VISIBLE) {
        if (oneTimeSkuDetails == null) {
            Toast.makeText(MainActivity.this, "商品信息加载中，请稍后重试", Toast.LENGTH_SHORT).show();
            return;
        }
        BillingFlowParams flowParams = BillingFlowParams.newBuilder()
                .setSkuDetails(oneTimeSkuDetails)
                .build();
        mBillingClient.launchBillingFlow(MainActivity.this, flowParams);
        brandDialogInAppPurchase.dismiss();
    } else {
        Toast.makeText(MainActivity.this, "未选择任何商品", Toast.LENGTH_SHORT).show();
    }
});

注意事项 #

• 所有SkuDetails对象必须通过官方querySkuDetailsAsync接口获取，自行构造的对象会触发支付错误
• 必须在BillingClient初始化完成（即onBillingSetupFinished返回OK）之后再调用商品查询接口
• 调用支付前必须对SkuDetails做非空判断，避免商品未加载完成时用户点击导致崩溃

内容的提问来源于stack exchange，提问作者Maan Chaudhary