I am am trying to build a simple chat app where I need to make resizable bitmaps of chat bubbles, after some googling I found in android is handled with .9.png files and I used the draw9patch tool to create all the bitmaps i needed following this tutorial Create Resizable Bitmaps.
My problem is when I import the .9.png files android studio renames it to .png. Also when I store them manually in the mipmap directory android studio refuses to build my project because it does not recognize the .9.png. I can't figure out where and how to use the .9.png files within my project.
Also I found this old tutorial Android Chat Bubbles Javapapers that specified that .9.png files must be stored in the res/drawable but currently android studio keeps such resources in the mipmap directory, this is a bit confusing for me.
Please how do I go around this? (I managed to build the app using the files as .png but not comfortable with that).