Offline-First Android Apps, REST APIs & Mobile Money for East Africa
Duration
4 weeks
Investment
UGX 500,000
Teaching
Live online
Program Introduction
Reliable Android apps in East Africa must do more than call an API when the internet is strong. They need to preserve useful data, explain what is happening, recover from interruptions and handle transactions safely. This Android development course teaches Kotlin developers to build connected, offline-first apps with REST APIs, Room, WorkManager, secure authentication, location services, notifications and mobile money integration patterns. Learners apply these skills to commerce and field-service workflows that reflect regional connectivity, data-cost and payment realities. The result is an Android portfolio project that can continue serving users when the network slows down or disappears.
Key Features & Benefits
• Offline-first by design: Local data remains available while synchronisation happens safely in the background. • East African payments context: Mobile money is treated as a real transaction workflow, including pending and failed states. • Backend-safe integration: Private keys and provider secrets are never placed in the Android application. • Resilient networking: Learners handle retries, timeouts, pagination, token expiry and interrupted connections. • Regional capstone: The project combines marketplace, payment and low-connectivity requirements. • Data-conscious engineering: Network use, caching and background work are considered from the user’s perspective. • Testable architecture: Repositories and data sources are designed for replacement, simulation and automated tests.
Real-World Applications
• Build mobile money-enabled ordering and payment apps for Ugandan and East African SMEs. • Create offline-first sales, stock, delivery and field-data applications. • Develop agritech apps for farmer registration, produce collection, pricing and agent updates. • Build clinic, pharmacy or community-health apps that retain essential records during network interruptions. • Create SACCO, savings-group or member-service apps with secure transaction-status workflows. • Add connected features to an existing local Android app without making it unusable offline. • Work as an Android developer on fintech, logistics, retail, health, agriculture or NGO projects.
Course outline and learning expectations
This is a tutor-led course. The outline shows what your tutor will cover; teaching materials and examinations are provided directly to enrolled students.
Live online
English (Uganda)
Lower Secondary · Upper Secondary · University · General Public
What you will learn
- Design a clear UI and data layer using repositories, ViewModel, coroutines and Flow.
- Consume REST APIs, parse JSON and model success, loading, empty and error states.
- Build an offline-first data flow with Room as the local source of truth.
- Synchronise data reliably with WorkManager, network constraints, retries and conflict rules.
- Implement secure authentication flows and protect tokens and sensitive configuration.
- Integrate mobile money through safe sandbox and backend-mediated payment patterns.
- Add location-aware features and push-notification workflows without compromising user trust.
- Deliver a connected East African commerce or field-service app that remains useful during poor connectivity.
Modules
- 1
Connected-app architecture
Separate UI, data and optional domain responsibilities.
Define repositories and data sources with stable interfaces.Model UI state and one-way event flow with ViewModel, coroutines and Flow. - 2
REST APIs and resilient networking
Understand endpoints, methods, headers, status codes, JSON and pagination.
Build a typed API client and map network models into app models.Handle timeouts, authentication failures, rate limits and user-friendly error messages. - 3
Authentication and session management
Implement registration, sign-in, sign-out and token refresh flows.
Keep provider secrets out of the Android app and store user credentials safely.Design secure role-aware navigation and session-expiry behaviour. - 4
Room as the local source of truth
Cache network data in Room and observe it reactively from Compose.
Design entity relationships, database migrations and data-mapping boundaries.Present cached content immediately while background refresh occurs. - 5
Offline-first synchronisation with WorkManager
Queue important reads and writes when connectivity is unavailable.
Apply network constraints, unique work, retries and exponential backoff.Detect conflicts, communicate sync status and prevent duplicate transactions. - 6
Mobile money integration patterns
Understand payment initiation, customer approval, callbacks and transaction status.
Connect the app to a secure backend or gateway sandbox instead of exposing private provider credentials.Design pending, successful, failed, cancelled and reversed payment experiences. - 7
Location, maps and notifications
Request location only when it supports a clear user benefit.
Add maps, service-area logic or delivery-location capture.Use push notifications for order, appointment, payment or field-task updates. - 8
Reliability testing and regional capstone
Test repositories, API responses, database behaviour and offline-to-online recovery.
Profile data usage and verify behaviour on slow, interrupted and changing networks.Build an offline-first East African Marketplace app with secure sign-in, product data, mobile money sandbox checkout and sync status.
Before you enroll
- Working knowledge of Kotlin, including classes, interfaces, collections, null safety and coroutines.
- Ability to build a multi-screen Jetpack Compose app with navigation, ViewModel and local storage.
- Completion of “Android App Development with Kotlin & Jetpack Compose in Uganda” or equivalent practical experience.
- Basic understanding of HTTP requests and JSON is helpful; the Android implementation is covered in the course.
- Access to a Git repository and an Android device or emulator.
What you need
- Android Studio, Android SDK and the bundled JDK.
- Kotlin, Jetpack Compose and Material 3.
- Coroutines, Flow and lifecycle-aware state collection.
- Room, DataStore and WorkManager.
- Retrofit or Ktor Client for networking, plus a JSON serialisation library.
- An API testing client such as Postman, Bruno or Insomnia.
- Git and a Git repository.
- An instructor-provided REST API or approved public development API.
- A mobile money provider sandbox or instructor-provided payment simulation.
- Firebase Cloud Messaging or an instructor-provided notification environment.
- Android Emulator and at least one physical Android device for connectivity testing.
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