In order to write an application for Samsung, Xiaomi phones and tablets, it is most convenient to create a Java application in Android Studio.

AndroidApp1.zip ...
size: 300 kb

This means that there is no superfluous:
1) A project consists of one Activity. (Activity in Android is a window in which the application draws its UI ...)
And then we can add another Activity to the project.
2) The project compiles and runs quickly

And select the language: Java

Note!
Minimum SDK : I'm using Android 8.1 (Oreo)
because I bought the tablet in 2017 and it's Android 8.1
And it also seems to me that by choosing Android 8.1 in Minimum SDK it means that it will work on almost all tablets in the world.
Of course, you can select Android 7 or Android 6 in Minimum SDK and then it will definitely work for everyone, but these are very old libraries and they have fewer functions.

This error appears both on the home computer and at work and does not affect anything.
You need to press the Close button and wait (1 minute until the new project loads libraries from the Internet).

Let's look at the file MainActivity.java this is the main activity:

 
Let's look at the resource file for the main activity:

Compiling the project means that our code will be converted to a apk file.

Click Build → Make Project in the menu.
Then click on the Build tab at the bottom and see how the project is compiled.

Run the project, i.e. run the apk file.
 
[1] Select Android Virtual Appliance
   I'm using "My Nexus 5 API 27" created his own virtual device Android ...

[2] Launching the project
   To start, click on the menu Run → Run 'app'.

[3] Select the tab Emulator
   To see the phone emulator

[4] We look at the result inside the phone emulator.

 
Note!
When starting a project, errors sometimes occur, so if there are errors, read:
Compile and run the application in Android Studio on a computer(Windows) in Android Device emulator mode... .