import 'package:alipay_me/alipay_me.dart';

  // 初始化
  initAlipay() async {
    final String tid = "tid_${DateTime.now().millisecondsSinceEpoch}";
    await AlipayMe.init(
        appId: "2019010362782013",
        pid: "2088012716890635",
        rsa2Private: RSAPrivate,
        targetId: tid
    );
  }
  
  // 发起支付
  var o = await AlipayMe.pay(apyInfo,
      urlScheme: "alisdkdemo",  // 这里的URL Schemes中输入的alisdkdemo，为测试demo，实际商户的app中要填写独立的scheme
      isSandbox: _isSandbox,
   );

  //授权申请
  await AlipayMe.auth(
        urlScheme: "alisdkdemo", // 这里的URL Schemes中输入的alisdkdemo，为测试demo，实际商户的app中要填写独立的scheme
        isSandbox: _isSandbox,
        authInfo: data,
      );