Flutter后台访问插件backdoor_flutter的使用

Flutter Backdoor Package

此插件添加了一个后门功能，用于检查自由职业或其他项目的支付状态。

需求

一个托管的JSON文件，格式如下：

https://raw.githubusercontent.com/gktirkha/backdoor_flutter/refs/heads/master/assets/example-hosted.json

单个JSON文件可以处理多个项目。

JSON参数

1. apps: 包含所有应用对象。如果要添加新应用，只需添加即可。

   在每个应用中可以添加以下参数：

   • status: 必填参数，可以有以下值：

     • PAID: 支付未完成
     • UNPAID: 支付已完成
     • ALLOW_LIMITED_LAUNCHES: 使用最大启动机制
     • ON_TRIAL: 使用到期日期机制

   • target_version: 检查与代码中配置的版本是否匹配（应大于0）

   • should_check_after_paid: 即使状态为已支付，也强制检查在线JSON（一旦设置为false，具有缓存数据的设备将不会有任何影响）

   • check_during_trial: 在试用期内强制检查在线JSON（一旦设置为false，具有缓存数据的设备将不会有任何影响）

   • expire_date: ON_TRIAL机制的过期日期

   • warning_date: 在ON_TRIAL机制中发出警告

   • max_launch: 超过多少次启动后应检查在线JSON的ALLOW_LIMITED_LAUNCHES机制

   • strict_max_launch: 如果设置为false（默认在flutter代码中为true），则启动计数将在flutter代码中重置。如果设置为true，超过限制后将调用OnLimitedLaunchExceeded，否则启动计数将重置。

   • developer_details: 可选的json对象（Map）

   • additional_fields: 可以发送任何内容

流程图

1. 图像文件
2. draw.io

使用方法

请参阅dart文档版本：Dart Doc

步骤1：添加依赖

dependencies:
    backdoor_flutter: ^latest_version

步骤2：在代码中使用

import 'dart:developer';

import 'package:backdoor_flutter/backdoor_flutter.dart';
import 'package:flutter/material.dart';

void main() async {
  WidgetsFlutterBinding.ensureInitialized();

  await BackdoorFlutter.init(
    jsonUrl:
        "https://raw.githubusercontent.com/gktirkha/backdoor_flutter/beta/assets/example-hosted.json",
    appName: "trial_expire",
    version: 1,
  );
  runApp(const MainApp());
}

class MainApp extends StatelessWidget {
  const MainApp({super.key});

  [@override](/user/override)
  Widget build(BuildContext context) {
    return MaterialApp(
      home: Scaffold(
        body: Center(
          child: ElevatedButton(
            onPressed: () {
              BackdoorFlutter.checkStatus(
                onException: (exception) {
                  log(exception.toString(), name: "onException");
                },
                onUnhandled: (reason, backdoorPaymentModel) {
                  log(reason.name, name: "onUnhandled");
                  log(backdoorPaymentModel.toString(), name: "onUnhandled");
                },
                onAppNotFound: () {
                  log("onAppNotFound", name: "onAppNotFound");
                },
                onLimitedLaunch: (backdoorPaymentModel, currentCount) {
                  log(currentCount.toString(), name: "onLimitedLaunch");
                  log(backdoorPaymentModel.toString(), name: "onLimitedLaunch");
                },
                onLimitedLaunchExceeded: (backdoorPaymentModel) {
                  log(backdoorPaymentModel.toString(),
                      name: "onLimitedLaunchExceeded");
                },
                onPaid: (backdoorPaymentModel) {
                  log(backdoorPaymentModel.toString(), name: "onPaid");
                },
                onTargetVersionMisMatch:
                    (backdoorPaymentModel, targetVersion, configuredVersion) {
                  log(backdoorPaymentModel.toString(),
                      name: "onTargetVersionMisMatch");
                  log(targetVersion.toString(),
                      name: "onTargetVersionMisMatch Target Version");
                  log(configuredVersion.toString(),
                      name: "onTargetVersionMisMatch Configured Version");
                },
                onTrial: (backdoorPaymentModel, expiryDate, warningDate) {
                  log(backdoorPaymentModel.toString(), name: "onTrial");
                  log(expiryDate.toString(), name: "onTrial expiryDate");
                  log(warningDate.toString(), name: "onTrial warningDate");
                },
                onTrialEnded: (backdoorPaymentModel, expiryDate) {
                  log(backdoorPaymentModel.toString(), name: "onTrialEnded");
                  log(expiryDate.toString(), name: "onTrialEnded expiryDate");
                },
                onTrialWarning:
                    (backdoorPaymentModel, expiryDate, warningDate) {
                  log(backdoorPaymentModel.toString(), name: "onTrialWarning");
                  log(expiryDate.toString(), name: "onTrialWarning expiryDate");
                  log(warningDate.toString(),
                      name: "onTrialWarning warningDate");
                },
                onUnPaid: (backdoorPaymentModel) {
                  log(backdoorPaymentModel.toString(), name: "onUnPaid");
                },
              );
            },
            child: const Text("Check App"),
          ),
        ),
      ),
    );
  }
}