phonepe_payment_sdk 2.0.2

A flutter Plugin for PhonePe Payment SDK

example/lib/main.dart

import 'dart:convert';
import 'dart:io';

import 'package:flutter/material.dart';
import 'package:phonepe_payment_sdk/phonepe_payment_sdk.dart';
import 'package:phonepe_payment_sdk_example/upi_app.dart';

void main() {
  runApp(const MerchantApp());
}

class MerchantApp extends StatefulWidget {
  const MerchantApp({super.key});

  @override
  State<MerchantApp> createState() => MerchantScreen();
}

class MerchantScreen extends State<MerchantApp> {
  String body = "";
  String callback = "flutterDemoApp";
  String checksum = "";

  Map<String, String> headers = {};
  List<String> environmentList = <String>['SANDBOX', 'PRODUCTION'];
  bool enableLogs = true;
  Object? result;
  String environmentValue = 'SANDBOX';
  String appId = "";
  String merchantId = "";
  String packageName = "com.phonepe.simulator";

  void initPhonePeSdk() {
    PhonePePaymentSdk.init(environmentValue, appId, merchantId, enableLogs)
        .then((isInitialized) => {
              setState(() {
                result = 'PhonePe SDK Initialized - $isInitialized';
              })
            })
        .catchError((error) {
      handleError(error);
      return <dynamic>{};
    });
  }

  void isPhonePeInstalled() {
    PhonePePaymentSdk.isPhonePeInstalled()
        .then((isPhonePeInstalled) => {
              setState(() {
                result = 'PhonePe Installed - $isPhonePeInstalled';
              })
            })
        .catchError((error) {
      handleError(error);
      return <dynamic>{};
    });
  }

  void isGpayInstalled() {
    PhonePePaymentSdk.isGPayAppInstalled()
        .then((isGpayInstalled) => {
              setState(() {
                result = 'GPay Installed - $isGpayInstalled';
              })
            })
        .catchError((error) {
      handleError(error);
      return <dynamic>{};
    });
  }

  void isPaytmInstalled() {
    PhonePePaymentSdk.isPaytmAppInstalled()
        .then((isPaytmInstalled) => {
              setState(() {
                result = 'Paytm Installed - $isPaytmInstalled';
              })
            })
        .catchError((error) {
      handleError(error);
      return <dynamic>{};
    });
  }

  void getPackageSignatureForAndroid() {
    if (Platform.isAndroid) {
      PhonePePaymentSdk.getPackageSignatureForAndroid()
          .then((packageSignature) => {
                setState(() {
                  result = 'getPackageSignatureForAndroid - $packageSignature';
                })
              })
          .catchError((error) {
        handleError(error);
        return <dynamic>{};
      });
    }
  }

  void getInstalledUpiAppsForiOS() {
    if (Platform.isIOS) {
      PhonePePaymentSdk.getInstalledUpiAppsForiOS()
          .then((apps) => {
                setState(() {
                  result = 'getUPIAppsInstalledForIOS - $apps';

                  // For Usage
                  List<String> stringList = apps
                          ?.whereType<
                              String>() // Filters out null and non-String elements
                          .toList() ??
                      [];

                  // Check if the string value 'Orange' exists in the filtered list
                  String searchString = 'PHONEPE';
                  bool isStringExist = stringList.contains(searchString);

                  if (isStringExist) {
                    print('$searchString app exist in the device.');
                  } else {
                    print('$searchString app does not exist in the list.');
                  }
                })
              })
          .catchError((error) {
        handleError(error);
        return <dynamic>{};
      });
    }
  }

  void getInstalledApps() {
    if (Platform.isAndroid) {
      getInstalledUpiAppsForAndroid();
    } else {
      getInstalledUpiAppsForiOS();
    }
  }

  void getInstalledUpiAppsForAndroid() {
    PhonePePaymentSdk.getInstalledUpiAppsForAndroid()
        .then((apps) => {
              setState(() {
                if (apps != null) {
                  Iterable l = json.decode(apps);
                  List<UPIApp> upiApps = List<UPIApp>.from(
                      l.map((model) => UPIApp.fromJson(model)));
                  String appString = '';
                  for (var element in upiApps) {
                    appString +=
                        "${element.applicationName} ${element.version} ${element.packageName}";
                  }
                  result = 'Installed Upi Apps - $appString';
                } else {
                  result = 'Installed Upi Apps - 0';
                }
              })
            })
        .catchError((error) {
      handleError(error);
      return <dynamic>{};
    });
  }

  void startTransaction() async {
    try {
      PhonePePaymentSdk.startTransaction(body, callback, checksum, packageName)
          .then((response) => {
                setState(() {
                  if (response != null) {
                    String status = response['status'].toString();
                    String error = response['error'].toString();
                    if (status == 'SUCCESS') {
                      result = "Flow Completed - Status: Success!";
                    } else {
                      result =
                          "Flow Completed - Status: $status and Error: $error";
                    }
                  } else {
                    result = "Flow Incomplete";
                  }
                })
              })
          .catchError((error) {
        handleError(error);
        return <dynamic>{};
      });
    } catch (error) {
      handleError(error);
    }
  }

  void handleError(error) {
    setState(() {
      if (error is Exception) {
        result = error.toString();
      } else {
        result = {"error": error};
      }
    });
  }

  @override
  Widget build(BuildContext context) {
    return MaterialApp(
      home: Scaffold(
          appBar: AppBar(
            title: const Text('Flutter Merchant Demo App'),
          ),
          body: SingleChildScrollView(
            child: Container(
              margin: const EdgeInsets.all(7),
              child: Column(
                children: <Widget>[
                  TextField(
                    decoration: const InputDecoration(
                      border: OutlineInputBorder(),
                      hintText: 'Merchant Id',
                    ),
                    onChanged: (text) {
                      merchantId = text;
                    },
                  ),
                  TextField(
                    decoration: const InputDecoration(
                      border: OutlineInputBorder(),
                      hintText: 'App Id',
                    ),
                    onChanged: (text) {
                      appId = text;
                    },
                  ),
                  Row(
                    mainAxisAlignment: MainAxisAlignment.spaceEvenly,
                    children: <Widget>[
                      const Text('Select the environment'),
                      DropdownButton<String>(
                        value: environmentValue,
                        icon: const Icon(Icons.arrow_downward),
                        elevation: 16,
                        underline: Container(
                          height: 2,
                          color: Colors.black,
                        ),
                        onChanged: (String? value) {
                          setState(() {
                            environmentValue = value!;
                            if (environmentValue == 'PRODUCTION') {
                              packageName = "com.phonepe.app";
                            } else if (environmentValue == 'SANDBOX') {
                              packageName = "com.phonepe.simulator";
                            }
                          });
                        },
                        items: environmentList
                            .map<DropdownMenuItem<String>>((String value) {
                          return DropdownMenuItem<String>(
                            value: value,
                            child: Text(value),
                          );
                        }).toList(),
                      )
                    ],
                  ),
                  Visibility(
                      maintainSize: false,
                      maintainAnimation: false,
                      maintainState: false,
                      visible: Platform.isAndroid,
                      child: Row(
                          mainAxisAlignment: MainAxisAlignment.center,
                          children: <Widget>[
                            const SizedBox(height: 10),
                            Text("Package Name: $packageName"),
                          ])),
                  const SizedBox(height: 10),
                  Row(
                    children: <Widget>[
                      Checkbox(
                          value: enableLogs,
                          onChanged: (state) {
                            setState(() {
                              enableLogs = state!;
                            });
                          }),
                      const Text("Enable Logs")
                    ],
                  ),
                  const SizedBox(height: 10),
                  const Text(
                    'Warning: Init SDK is Mandatory to use all the functionalities*',
                    style: TextStyle(color: Colors.red),
                  ),
                  ElevatedButton(
                      onPressed: initPhonePeSdk, child: const Text('INIT SDK')),
                  const SizedBox(width: 5.0),
                  TextField(
                    decoration: const InputDecoration(
                      border: OutlineInputBorder(),
                      hintText: 'body',
                    ),
                    onChanged: (text) {
                      body = text;
                    },
                  ),
                  const SizedBox(height: 10),
                  TextField(
                    decoration: const InputDecoration(
                      border: OutlineInputBorder(),
                      hintText: 'checksum',
                    ),
                    onChanged: (text) {
                      checksum = text;
                    },
                  ),
                  const SizedBox(height: 10),
                  ElevatedButton(
                      onPressed: startTransaction,
                      child: const Text('Start Transaction')),
                  Row(
                      mainAxisAlignment: MainAxisAlignment.spaceBetween,
                      children: <Widget>[
                        Expanded(
                            child: ElevatedButton(
                                onPressed: isPhonePeInstalled,
                                child: const Text('PhonePe App'))),
                        const SizedBox(width: 5.0),
                        Expanded(
                            child: ElevatedButton(
                                onPressed: isGpayInstalled,
                                child: const Text('Gpay App'))),
                        const SizedBox(width: 5.0),
                        Expanded(
                            child: ElevatedButton(
                                onPressed: isPaytmInstalled,
                                child: const Text('Paytm App'))),
                      ]),
                  ElevatedButton(
                      onPressed: getInstalledApps,
                      child: const Text('Get UPI Apps')),
                  const SizedBox(width: 5.0),
                  Visibility(
                      maintainSize: false,
                      maintainAnimation: false,
                      maintainState: false,
                      visible: Platform.isAndroid,
                      child: Row(
                          mainAxisAlignment: MainAxisAlignment.spaceBetween,
                          children: <Widget>[
                            Expanded(
                                child: ElevatedButton(
                                    onPressed: getPackageSignatureForAndroid,
                                    child:
                                        const Text('Get Package Signature'))),
                            const SizedBox(width: 5.0)
                          ])),
                  Text("Result: \n $result")
                ],
              ),
            ),
          )),
    );
  }
}