Hello, this is Heino.
Since I am developing an Android application for the first time, I will post the stumbling point as a memorandum. In this post, I will list the stumbling points in an updated format from time to time. The solution also wants to be posted in a separate article if found.
I expect that there are many points that beginners of Android application development will stumble upon, so If I can share my stumbling block with those who are also developing Android apps for the first time I think. Also, if you can comment, "There is a solution when you stumble here." I am very grateful. Then, I will enumerate the stumbling points below.
7.1. About automatic font resizing of textview The following site was described in an easy-to-understand manner, so I referred to it. https://blog.k3n.link/entry/auto-sizing-text-view
Especially regarding the difference between [singleLine = "true"] and [maxLines = "1"].
Android Studio 3.4.1