The first hurdle, Adapter, and the second hurdle, Database, are difficult to understand. If you just follow the code, you will only be exercising your fingers, so when you try to understand, ask yourself, "Why?" and think about the answer while understanding the code. The lecture doesn't really help with understanding. So it's hard to understand on your own.

First of all, because it is an old SDK, there are things that are not usable or not used compared to the present, so I looked for everything on my own, whether it is necessary and why it is used, and in fact, I watched the video and followed it exactly and found everything on my own. However, I recommend it to anyone who thinks they can learn by watching what functions there are in Android and how to use them.

I still don't fully understand it, so I think I'll have to keep looking at the code. But I took the class because I wanted to see the entire process of actually creating an app, so I'm satisfied.

It helped me a lot in developing my android mobile app. Thank you so much!

thank you