android – Google Pay API获取收费金额

我按照教程here集成谷歌付费API以获取我的应用程序的资金.到目前为止,我已成功设法收费,但我发现很难获得成功转账的收费金额.

我使用的谷歌钱包依赖是

implementation 'com.google.android.gms:play-services-wallet:15.0.1'

当我从另一个片段发出请求时,我想获得MainActivity’sonActivityResult中的收费金额.但是Intent数据只有电子邮件地址和账单状态.我能想到的唯一合乎逻辑的方法是以某种方式将收费数量manullay注入Intent数据,但我似乎无法找到解决方法.

我试图在这里设置一个参数,但它没有出现在我在onActivityResult中收到的Intent中.

任何人都可以帮我一把吗？

public void requestPayment(BigDecimal amount) {
        // disables the button to prevent multiple clicks.
        //mGooglePayButton.setClickable(false);

        // The price provided to the API should include taxes and shipping.
        // This price is not displayed to the user.

        String chargeAmount = amount.divide(MICROS).setScale(2, RoundingMode.HALF_EVEN).toString();

//        String price = PaymentsUtil.microsToString(chargeAmount);

        TransactionInfo transaction = PaymentsUtil.createTransaction(chargeAmount);

        Parcel parcel = Parcel.obtain();
        parcel.writeString(chargeAmount);
        parcel.recycle();
        transaction.writetoParcel(parcel, 0);

        PaymentDataRequest request = PaymentsUtil.createPaymentDataRequest(transaction);

        Task<PaymentData> futurePaymentData = mPaymentsClient.loadPaymentData(request);


        // Since loadPaymentData may show the UI asking the user to select a payment method, we use
        // AutoResolveHelper to wait for the user interacting with it. Once completed,
        // onActivityResult will be called with the result.
        AutoResolveHelper.resolveTask(futurePaymentData, Objects.requireNonNull(getActivity()), LOAD_PAYMENT_DATA_REQUEST_CODE);


    }

解决方法:

正如您在评论中提到的,电子邮件和付款状态由Google电子钱包设置,因此我不确定您是否可以修改该Intent.

解：

一种选择是使用sharedPreference来实现此目的.在requestPayment()方法中,在SharedPreference和MainActivity中设置chargeAmount#onActivityResult()如果付款成功,则从SharedPreference获取chargeAmount.你完成了.

public void requestPayment(BigDecimal amount) {

    ...........

    String chargeAmount = amount.divide(MICROS).setScale(2, RoundingMode.HALF_EVEN).toString();
    // set chargeAmount to SharedPreference here

    .............
}

MainActivity#onActivityResult()

@Override
public void onActivityResult(int requestCode, int resultCode, Intent data) {
    switch (requestCode) {
        case LOAD_PAYMENT_DATA_REQUEST_CODE:
            switch (resultCode) {
                case Activity.RESULT_OK:
                    // get chargeAmount from SharedPreference here 
                    PaymentData paymentData = PaymentData.getFromIntent(data);
                    String token = paymentData.getPaymentMethodToken().getToken();
                    break;
                case Activity.RESULT_CANCELED:
                    break;
                case AutoResolveHelper.RESULT_ERROR:
                    Status status = AutoResolveHelper.getStatusFromIntent(data);
                    // Log the status for debugging.
                    // Generally, there is no need to show an error to
                    // the user as the Google Pay API will do that.
                    break;
                default:
                    // Do nothing.
            }
            break;
        default:
            // Do nothing.
    }
}

我希望这能帮到您.