How to use AWS in an Android application

First of all create an AWS account

Here: https://aws.amazon.com

Setting up the server

Source: Installation and configuration of the server
Install Node.js and NPM if you don't have them. Open the terminal and use this command:

npm install -g @aws-amplify/cli

amplify configure

It will open a web page where is require the login.

Press enter after you have signed in

Select the region of the server

Select the user name (if you press enter it will take the one in brackets)

It will open a new web page with the user, next: permissions, next: tags, create a tag, create user.

Go back to the terminal (do not close the web page) and press enter

Give the access key id that you have in the web page, press enter

Same thing with the secret access key

Decide if you want to update or create the AWS Profile in your local machine (press enter for "default" has the name)

Initialization of Amplify

amplify init

Enter a name for the project (enter and it will take the previous one)

Enter a name for the environment

Choose your default editor: (Select one)
• Visual Studio Code
• Atom editor
• Sublime Text
• Intellij IDEA
• Vim (Mac OS only)
• Emacs (Mac OS only
• None

Choose the type of app that you're building (Select one)
• Android
• IOS
• Javascript

Where is your Res directory? (The defual one is app/src/main/res)

Do you want to use an AWS profile? (The one from early).

Add the API for authentication

amplify add auth

Do you want to use the default authentication and security configuration? I selected the default one

Select how user will be able to sign in
• Username
• Email
• Phone number
• Email and Phone Number

Amplify push for pushing the changes and the creation of the server and reply Y

Look at the android application from now on

If you want to see the console of the user pool type in the terminal amplify auth console