Android
The operating system. It decides which app is in front, which file is whose, and whether an install is allowed. This is the floor named Android.
The world you code on
Android is the system that runs the phone.
It draws the home screen. It starts apps. It asks before a new store can install a file. Coding on Android is talking to that computer with more precision than tapping icons.
Tap a layer
The same device is several floors at once. You do not need to memorize the names. You only need to know which floor you are standing on.
Rooms in this wing
01
Apps, scripts, APKs
A script can be useful without looking like an app. An APK is the box the app arrives in.
Open → 02Three ways software arrives
Play Store, F-Droid, or a file you downloaded. This course uses F-Droid on purpose.
Open → 03Locked drawers
A permission is a knock. Termux:API is a pair of pieces, not one.
Open →
04
Version, space, heat
Why Android 9 is named later, and why a build makes the phone warm.
Open → 05A little Linux computer
Home folders, the ~ mark, and why Termux files are not your camera roll.
Open → 06Screens of an app
Activity and layout. This waits until Stage 5. The words live here so they are not strangers later.
Open →Next step
An app is a program with a face. An APK is the install file.