Conclusion

Conclusion

Design patterns are solutions to common software development problems. They’re excellent tools for building scalable, maintainable, and flexible apps. They’ve been tried and tested for many years.

In this lesson, you’ve learned:

• Common design patterns used in mobile development.
• How to implement the singleton, factory, and observer design patterns.
• The advantages and use cases for each design pattern.

In the next lesson, you’ll learn about the SOLID object-oriented programming principles.

If you want to explore more about design patterns, check out the “Architecting for Testing” chapter of Android Test-Driven Development by Tutorials.