Philipp Lackner Courses

Custom Video Player in Jetpack Compose on Android - Media3 Library

Master building custom video players using Media3 library and Jetpack Compose toolkit with personalized UI controls for seamless media playback on Android.

• YouTube
• 46 minutes
• Self-Paced
• Free Video

How to Encrypt Local Preferences in KMP with KSafe

Master secure data storage in Kotlin Multiplatform by encrypting local preferences with KSafe library across Android, iOS, and desktop platforms using DataStore.

• YouTube
• 21 minutes
• Self-Paced
• Free Video

Senior Android Developer Reviews AI-Generated Code

Discover how a senior Android developer evaluates Kotlin code generated by advanced AI models like GPT and Claude, revealing insights into AI coding capabilities.

• YouTube
• 32 minutes
• Self-Paced
• Free Video

Kotlin 2.3.0, New Compose Features and More - Mobile Dev News January 2026

Discover the latest Kotlin 2.3.0 updates, new Jetpack Compose features, Material 1.4.0, Media3 1.9.0, Android 16 QPR2, and Google's sideloading clarifications for mobile developers.

• YouTube
• 17 minutes
• Self-Paced
• Free Video

If AI Makes You Feel Bad as a Developer - Watch This Video

Discover data-driven insights about AI's actual progress and realistic timeline for replacing developers completely in this reassuring analysis.

• YouTube
• 13 minutes
• Self-Paced
• Free Video

Nav2 vs. Nav3 - Which Library for a Production Android App in 2026?

Discover which Jetpack Compose navigation library to choose for production Android apps in 2026, comparing Nav2 vs Nav3 features and getting expert recommendations.

• YouTube
• 12 minutes
• Self-Paced
• Free Video

Compose Multiplatform 1.10.0, Ktor 3.4.0 and More - Mobile Dev News February 2026

Discover the latest Kotlin ecosystem updates from January 2026, covering Compose Multiplatform 1.10.0, Android Studio Otter 3 features, and Ktor 3.4.0 developments.

• YouTube
• 11 minutes
• Self-Paced
• Free Video

Why You Should Delete Your Base Classes on Android - BaseActivity, BaseViewModel, etc.

Discover why base classes like BaseActivity and BaseViewModel are anti-patterns in Android and KMP development, and learn better architectural approaches for cleaner code.

• YouTube
• 18 minutes
• Self-Paced
• Free Video

Profiles, Configuration and Environment Variables - Spring Boot 4 Basics With Kotlin

Master Spring Boot profiles and configuration management using application.yml files to define environment-specific properties for development and production setups.

• YouTube
• 20 minutes
• Self-Paced
• Free Video

How to Implement Pagination in Compose Multiplatform - KMP

Master a generic approach to implement pagination for remote APIs and local databases in Compose Multiplatform development.

• YouTube
• 50 minutes
• Self-Paced
• Free Video

Everything About Context Parameters in Kotlin

Master context parameters in Kotlin, exploring this new feature's practical applications and understanding when to use them effectively in your development projects.

• YouTube
• 17 minutes
• Self-Paced
• Free Video

How Easily Attackers Can Fake Requests to Your Server - And What You Can Do Against It

Discover app attestation techniques to verify client authenticity and prevent server request manipulation with real-world examples and technical implementation.

• YouTube
• 19 minutes
• Self-Paced
• Free Video

Multi-Module Architecture in KMP for Beginners - Kotlin Multiplatform

Discover multi-module architecture fundamentals in Kotlin Multiplatform, exploring how to structure KMP projects with modular design patterns for better code organization and scalability.

• YouTube
• 18 minutes
• Self-Paced
• Free Video

Threads vs. Kotlin Coroutines vs. Dispatchers - The Last Video You'll Need

Master the fundamental differences between threads, Kotlin coroutines, and dispatchers with detailed explanations of blocking code, multithreading, parallelism, and suspending functions.

• YouTube
• 27 minutes
• Self-Paced
• Free Video

Project Creation and First Hello World App - Spring Boot 4 Basics With Kotlin

Discover Spring Boot fundamentals with Kotlin by building your first backend project and creating a hello world URL endpoint from scratch.

• YouTube
• 19 minutes
• Self-Paced
• Free Video