Android apps are easily created using the android studio. Here the foremost priority for me was getting to create an OpenGL ES environment and draw a shape such as a triangle. I referred to the developer.android.com site where most of the explanation is voluminous and detailed to follow. It took me quite a while to fully understand.
I had to download an android studio which took a lot of time and finally after a few days I was good to go.
I made my mobile work in developer mode and made several projects just to understand what developing for android feels like.
The First app
The first app I made was an empty project. It involved just giving a name to the project and letting all the default settings as it is. I had seen one of my students fiddle with an app where he downloaded the app in his mobile and run it. I just did the same with this empty project and my mobile.
The Second app
A hello world app followed next. It just displayed a hello world message on the screen which I learnt to change.
The Third app
This one read a text message and upon clicking Ok button sent the message to the next screen that displayed the message.
While all this was practice I jumped into making android apps which were more complex with the one where the app displays a triangle using OpenGL ES environment. I tried displaying a triangle using OpenGL.
I launched the app in the emulator. It started with the following screen.
There were several problems I encountered esp with OpenGL ES environment. It was frustrating to expect a triangle on the screen and just getting a black background. I knew I needed to persevere so after a few days I found time to set the kinks in order and finally was able to draw a triangle in OpenGL ES on the emulator.
I am well versed with OpenGL so immediately wanted to start off with drawing a Sierpinski gasket. I was very very tired that night. First up next morning I might not even have brushed. I was glued to the computer for nearly two hours. It was frustrating again.
I will list out exactly what went wrong.--- Will update Soon.
Update1:
Here is the latest app which goes further ahead and divides the triangle into sierpinski gasket:
https://cglabprojects.blogspot.com/2023/01/sierpinski-gasket-in-android-app.html
