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More details: Which web API do you need integrated into the Flutter app? [login to view URL] What is the main purpose of integrating the web API into the Flutter app? Fetch all screens from Cms Manhattan submit requests to get datasets and map dataset to flutter I need complete all screen which made in flutter app design for shop. I need deploy it on Google play and Apple store . So get dataset just add &format=json to URL each page . I see web service for catalog was not complete . I will complete it down the road . Or we can use catalog from original web site which is done . So catalog and other parts required to apply role to display some buttons as example . So you need to get User Role for that More I see web service for catalog was not complete . I will complete it down the road . Or we can use catalog from original web site which is done . So catalog and other parts required to apply role to display some buttons as example . So you need to get User Role for that. Catalog will use the same role always because it is not every one it is low priority role I mean that web service will ignore to submit http request to get dataset but you have to display user name and allow leave review . Just for review you have to call web site URL So regarding authorization for authorization to have call Web site login form or registration [login to view URL] reg and auth page there So once you login or reg then you need store sessionId and send it to web server to let the server know your context for your role and your data which in our session each http request you have to send SessionId to web server to let web sire recognize your context such as your role and your datasets So Now is good requestion how Flutter app will know user role ? ??? I will give you one more web service for that which called identity server it web service will response dataset with username and role via user role you will show content for default user and member and admin So default user is user without authorization next Member is user with authorization it is buyer for example Admin is user modify item and add new items in catalog it is seller Every admin belongs to own catalog. I mean every seller (admin) has private catalog When you submit request to web site then you have to send to two parameters userId and siteId to let webserver to know what web site context for the request I mean for what private catalog Some integration are done but developer was junior. he could complete
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GET clear communication------creative thinking-----Reliable delivery without constant follow-ups------------- HIGHLY ABLE TO INTEGRATE MULTIPLE PLATFORMS -----------Integrate for Web API and complete Flutter app for iPhone and Android with deployment I am an Innovative Flutter/Full stack developer having rich experience with so many successful Tasks.I am a Mobile Application developer having 7 years of work experience with the expertise of React native/Xamarin/ Flutter/ Java and Kotlin (android) /Swift and objective (iOS )/ XML and Android XML Layouts (Android)/ Interface Builder and Storyboards (iOS). I have some queries to give you accurate time and price Let’s connect on chat for further discussion and start quickly. Thanks!!
$200 USD in 7 days
4.0
4.0
51 freelancers are bidding on average $277 USD for this job

⭐️⭐️⭐️ Flutter Shop App with CMS Manhattan API (Role-Based + Session Management) ⭐️⭐️⭐️ Hello, I checked JD and you want — a complete Flutter app that integrates with CMS Manhattan APIs (JSON format), dynamically builds all shop screens, and handles authentication, session tracking, and role-based content for a production-ready mobile app. • Full API integration using &format=json endpoints • Dynamic UI rendering from API datasets • Complete shop app screens in Flutter • Login & registration via web authorization endpoint • Secure SessionId storage & reuse in every request • Identity server integration for username & role • Role-based UI (Guest / Member / Admin) • Private catalog handling (per Admin/seller) • Passing userId & siteId with each request • Catalog browsing with fallback (API/web source) Let’s chat…. Thanks
$410 USD in 7 days
9.3
9.3

⭐⭐⭐⭐⭐ ✅Hi there, hope you are doing well! I have experience integrating complex web APIs into Flutter apps to fetch and map datasets dynamically across multiple screens, making the app work smoothly in real-time. From my experience, seamless session and role management is key to successfully completing this project. Approach: ⭕ I will thoroughly analyze and integrate the provided CMS Manhattan API with proper sessionId handling. ⭕ Implement secure login/registration to store session and retrieve user roles from the identity server. ⭕ Map user roles (default, member, admin) to UI elements and functionality accordingly. ⭕ Complete all Flutter screens for the shop design ensuring correct dataset binding. ⭕ Prepare and deploy the app to Google Play Store and Apple App Store following all requirements. ❓Could you please confirm if you want me to handle ongoing catalog updates as they are finalized? I am confident I can deliver a robust, user-role aware Flutter app integrated fully with your APIs and ready for deployment. Looking forward to working with you. Best regards, Nam
$200 USD in 3 days
5.2
5.2

I can see where the previous integration started falling apart — the hard part here isn’t the Flutter UI itself, it’s keeping the app state consistent with the session-based backend and role-driven catalog behavior. I’d approach this by first stabilizing authentication and session handling around the existing JSP endpoints, since every screen depends on SessionId, userId, siteId, and role context being passed correctly. After that I’d build a clean API layer in Flutter to normalize the JSON responses, because right now some endpoints look partially implemented and others depend on the website flow itself. For catalog/admin behavior, I’d separate role permissions from screen rendering early so seller catalogs, buyer access, reviews, and guest mode don’t become tightly coupled later. I’ve handled similar cleanup work before on Shopify integrations where junior implementations worked “sometimes” but became impossible to maintain. One thing I’d also improve is offline-safe caching for catalog pages so the app feels responsive even with slower API responses. I’m ready to start digging into the current Flutter codebase and existing integrations.
$140 USD in 7 days
4.9
4.9

⭐⭐⭐⭐⭐ Integrate Web API into Your Flutter App for Seamless Functionality ❇️ Hi My Friend, I hope you are doing well. I've reviewed your project requirements and noticed you're looking for a Flutter developer to integrate a web API. Look no further; Zohaib is here to help you! My team has successfully completed 50+ similar projects for Flutter applications. I will create a complete app design that fetches and maps datasets efficiently, ensuring smooth deployment on Google Play and Apple Store. ➡️ Why Me? I can easily do your Flutter app integration as I have 5 years of experience in mobile app development. My expertise includes API integration, user role management, and session handling. Besides, I have a strong grip on Flutter and Dart, ensuring a comprehensive approach to your project. ➡️ Let's have a quick chat to discuss your project in detail and let me show you samples of my previous work. Looking forward to discussing this with you in chat. ➡️ Skills & Experience: ✅ Flutter Development ✅ API Integration ✅ Dart Programming ✅ User Role Management ✅ Session Handling ✅ JSON Data Mapping ✅ Mobile App Deployment ✅ UI/UX Design ✅ Error Handling ✅ Database Connectivity ✅ Version Control (Git) ✅ Testing and Debugging Waiting for your response! Best Regards, Zohaib
$150 USD in 2 days
5.2
5.2

Hello, I have thoroughly reviewed your project requirements regarding the integration of the CMS Manhattan web API into the Flutter app for both iPhone and Android, as well as deployment on Google Play and the Apple Store. With extensive experience in Flutter app development and RESTful API integration, I am confident I can complete all screens as designed, implement session-based user authorization flows including member roles and admin capabilities, and ensure smooth interaction with the identity server for role-based content display. I understand the importance of session management and correctly passing parameters like userId, siteId, and sessionId for seamless server communication. I am prepared to take over where the previous developer left off and deliver a fully functional, polished app. I propose to commence development immediately with clear milestones and plan to deliver within 20 days, allowing time for thorough testing and deployment support. Could you please clarify if you have any preferred method for managing session storage and secure transmission of sessionId within the Flutter app? Best regards,
$155 USD in 21 days
4.8
4.8

As a seasoned software engineer and the head of SoftwareLinkers, I am adept at managing complex projects like yours with finesse. Equipped with extensive experience in Flutter, Mobile App Development and RESTful API integration, our team is poised to deliver an app that not only meets your functional requirements but also aligns perfectly with your business goals. With a keen understanding of your project details, we will ensure that all screens from Cms Manhattan are flawlessly integrated into the app. This includes fetching datasets, mapping them efficiently, as well as applying roles to display specific buttons - like reviewing and catalog functions. Placing utmost importance on user authorization and context, I will employ web services for login, registration, and role identification termed 'identity server.' This way, we can differentiate content for default users, members (buyers), and admins (sellers) including their respective private catalog. Moreover, beyond the completion of the task at hand, I offer long-term support and a collaborative approach to work. Ours is not just a transactional relationship; it's one where we become your technical partners.
$200 USD in 8 days
3.8
3.8

Hi, This sounds like a Flutter completion and API-integration cleanup task rather than a new app build. I’d first review the current Flutter code, identify what the previous developer already integrated, then standardize the API layer so every request sends the required sessionId, userId, siteId, and role context correctly. The main focus would be fetching datasets from the CMS Manhattan endpoints, mapping them into the existing Flutter screens, and showing the correct buttons/content for default users, members, and admins. The key part here is fixing the authentication and role-based display logic properly, because the catalog, reviews, private seller catalogs, and admin functions all depend on that context being passed consistently. I can also help prepare the Android and iOS builds for Play Store and App Store submission once the screens and API flows are stable.
$150 USD in 3 days
3.0
3.0

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