app-starlock/lib/tools/wechat/pay/wx_pay_tool.dart

import 'package:fluwx/fluwx.dart';
import 'package:star_lock/tools/storage.dart';

///
/// 微信支付
///
///
class WxPayTool {
  static Fluwx fluwx = Fluwx();
  static bool isInit = false;

  static void setAssociationUrl(String associationUrl) {
    Storage.saveAssociationUrl(associationUrl);
  }

  static Future<void> init(String appId, String universalLink) async {
    fluwx.registerApi(appId: appId, universalLink: universalLink);
  }

  static Future<void> pay(
      Payment payment, WeChatResponseSubscriber listener) async {
    if (!isInit) {
      isInit = true;
      final String _associationUrl = await Storage.getAssociationUrl();
      await init(payment.appId, _associationUrl);
      //回调
      void responseListener(WeChatResponse response) {
        if (response is WeChatPaymentResponse) {
          //支付回调
          listener.call(response);
        }
      }

      //开启监听
      fluwx.addSubscriber(responseListener);
    }
    fluwx.pay(which: payment);
  }

  static Payment mapToPayment(dynamic data) {
    final Payment payment = Payment(
      appId: data['appId'],
      partnerId: data['partnerId'],
      prepayId: data['prepayId'],
      packageValue: data['packageValue'],
      nonceStr: data['nonceStr'],
      timestamp: int.tryParse(data['timeStamp']) ?? 0,
      sign: data['sign'],
    );
    return payment;
  }
}