How to make your own keyboard with unique characters?

Question

Android

tell me where to start studying in the development of a unique keyboard for andryukha / apple (only default options and similar ones for android walk in the internet).

Answer 1

both the apple and the robot. the keyboard is a lightweight application or a dedicated lightweight part of the application.
explain to the operating system that your application is an input method.
develop layout layout.
according to certain rules, give back the entered data.
you need to start with Java (Java/Kotlin, ObjectiveSI/Swift).
General architecture of the application (First Hello World). At the same time, master the development environment
(Android Studio or Hcode).
Understand screen layout. (three approaches have already been spawned under the apple)
Well, actually a narrow section is how the on-screen keyboard is written.
https://developer.android.com/reference/android/in...