在Android中使用In-app Billing V3进行购买和检查项目是否已购买,可以按照以下步骤进行操作:
首先,在项目的build.gradle文件中添加以下依赖库:
dependencies {
// In-app Billing library
implementation 'com.android.billingclient:billing:3.0.0'
}
在需要使用In-app Billing的Activity或Fragment中,初始化BillingClient并设置相应的监听器:
import com.android.billingclient.api.BillingClient;
import com.android.billingclient.api.BillingClientStateListener;
import com.android.billingclient.api.Purchase;
import com.android.billingclient.api.PurchasesUpdatedListener;
import com.android.billingclient.api.BillingResult;
import com.android.billingclient.api.BillingFlowParams;
import com.android.billingclient.api.ConsumeParams;
import com.android.billingclient.api.ConsumeResponseListener;
public class MainActivity extends AppCompatActivity implements PurchasesUpdatedListener {
private BillingClient billingClient;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
// 初始化BillingClient
billingClient = BillingClient.newBuilder(this)
.enablePendingPurchases()
.setListener(this)
.build();
// 连接BillingClient
billingClient.startConnection(new BillingClientStateListener() {
@Override
public void onBillingSetupFinished(BillingResult billingResult) {
if (billingResult.getResponseCode() == BillingClient.BillingResponseCode.OK) {
// BillingClient连接成功,可以进行购买和查询操作
}
}
@Override
public void onBillingServiceDisconnected() {
// BillingClient连接断开,处理相应逻辑
}
});
}
@Override
public void onPurchasesUpdated(BillingResult billingResult, List purchases) {
// 处理购买结果
}
}
在需要购买的地方,调用launchBillingFlow
方法发起购买请求:
String skuId = "your_sku_id";
String purchaseToken = null; // 若进行消耗型商品的消耗操作,需要传入相应的purchaseToken
BillingFlowParams billingFlowParams = BillingFlowParams.newBuilder()
.setSkuDetails(skuDetails)
.setOldSkus(oldSkus)
.setAccountId(accountId)
.setObfuscatedAccountId(obfuscatedAccountId)
.setObfuscatedProfileId(obfuscatedProfileId)
.build();
int responseCode = billingClient.launchBillingFlow(MainActivity.this, billingFlowParams);
通过调用queryPurchases
方法可以查询已购买的商品:
Purchase.PurchasesResult purchasesResult = billingClient.queryPurchases(BillingClient.SkuType.INAPP);
List purchaseList = purchasesResult.getPurchasesList();
for (Purchase purchase : purchaseList) {
// 处理已购买的商品
}
如果购买的商品是消耗型商品,可以通过调用consumeAsync
方法消耗商品:
ConsumeParams consumeParams = ConsumeParams.newBuilder()
.setPurchaseToken(purchaseToken)
.build();
billingClient.consumeAsync(consumeParams, new ConsumeResponseListener() {
@Override
public void onConsumeResponse(BillingResult billingResult, String purchaseToken) {
// 处理商品消耗结果
}
});
以上是使用In-app Billing V3进行购买和检查项目是否已购买的解决方法,实际使用时需根据具体需求进行相应的处理和逻辑。