查询billingclient skus

Question

我有一个应用程序用于购买应用程序以删除广告。如果用户已经购买了该应用程序的高级版本，则希望隐藏“删除广告”按钮。当我们收到用户是否为高级用户时，应隐藏或显示按钮。

运行billingClient查询时，我正在UI线程上运行，并且想知道是否需要在后台线程上实现它。

public class SettingsActivity extends AppCompatActivity implements 
Preference.OnPreferenceChangeListener, PurchasesUpdatedListener, 
View.OnClickListener {

private static final String LOG_TAG = "LOGGER: " + SettingsActivity.class.getSimpleName();
private BillingClient billingClient;
private Button bt_remove_ads;
private BillingFlowParams flowParams;
private ProgressBar adProgressBar;

@Override
protected void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);

    setContentView(R.layout.activity_settings);

    adProgressBar = findViewById(R.id.pb_ad);
    bt_remove_ads = findViewById(R.id.button_remove_ads);
    bt_remove_ads.setOnClickListener(this);

    setupBillingClient();
}

@Override
public boolean onPreferenceChange(Preference preference, Object newValue) {
    return false;
}

@Override
public void onPurchasesUpdated(BillingResult billingResult, @Nullable List<Purchase> purchases) {

    //When user taps on BUY
}

@Override
public void onClick(View view) {
    if (view.getId() == R.id.button_remove_ads) {
        if (billingClient.isReady()) {
            BillingResult billingResponseCode = billingClient
                    .launchBillingFlow(SettingsActivity.this, flowParams);
        } else {
            displayPopup(DIALOG_BILLING_NOT_READY);
        }
    }
}

private void setupBillingClient() {

    billingClient = BillingClient
            .newBuilder(this)
            .enablePendingPurchases()
            .setListener(this)
            .build();

    billingClient.startConnection(new BillingClientStateListener() {
        @Override
        public void onBillingServiceDisconnected() {
        }

        @Override
        public void onBillingSetupFinished(BillingResult billingResult) {

            adProgressBar.setVisibility(View.GONE);
            Log.v(LOG_TAG, "onBillingSetupFinished code: " + billingResult.getResponseCode());
            if (billingResult.getResponseCode() == BillingResponseCode.OK) {

                final Purchase.PurchasesResult result = billingClient.queryPurchases(BillingClient.SkuType.INAPP);

                if (result.getPurchasesList().isEmpty()) {

                    startBillingConnection();
                    bt_remove_ads.setVisibility(View.VISIBLE);
                }
                else bt_remove_ads.setVisibility(View.GONE);
            }
        }
    });
}

private void startBillingConnection() {

    List<String> skuList = new ArrayList<>();
    skuList.add(IN_APP_PURCHASE_PREMIUM);

    SkuDetailsParams skuDetailsParams = SkuDetailsParams.newBuilder()
            .setSkusList(skuList).setType(BillingClient.SkuType.INAPP).build();

    Log.v(LOG_TAG, "querySkuDetailsAsync");
    billingClient.querySkuDetailsAsync(skuDetailsParams,
            (responseCode, skuDetailsList) -> {

                flowParams = BillingFlowParams.newBuilder()
                        .setSkuDetails(skuDetailsList.get(0))
                        .build();
            });

 }
}