First u have to learn java for android. you can use “tutorialspoint”, “java2s” etc. next you can use “Udemy” which has lot of free courses for android app development.
Read moreWhat is the best website to learn Android?
3- Websites to learn Android app programming
Read moreIs it hard to learn Android?
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.
Read moreWhat is the best way to learn Android development?
How to learn Android development – 6 key steps for beginners
Read moreHow do I become a professional Android developer?
How to become a better Android developer: 30+ bite-sized pro tips
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