Can I teach myself app development?

Unfortunately, learning to develop for Android is actually one of the trickier places to start . Building Android apps requires not only an understanding of Java (in itself a tough language), but also project structure, how the Android SDK works, XML, and more.

8 Best Android App Development Courses for Beginners

Pursuing the skills of core Java which leads to android development would require 3-4 months . Mastering the same is expected to take 1 to 1.5 years. Thus, in brief, if you are a beginner, it is estimated to take you around two years to have a good understanding and to start with android development projects.