Firebase: For Android Build better mobile apps and grow your business fast, without managing infrastructure. ~ Roger Taracha 

About Me ● Software Engineer. ● Python, JS, Android ● Dance Choreographer. ● Traveling. ● Community Development. ● DIY Hobbyist. ● Learning Facilitator - Andela 

What is Firebase? Firebase is a Backend-as-a-Service — Baas Firebase frees developers to focus on crafting fantastic user experiences. You don’t need to manage servers. You don’t need to write APIs. Firebase is your server, your API and your datastore, all written so generically that you can modify it to suit most needs. Some firebase features: 1. Realtime Database 2. File Storage 3. Authentication 4. Hosting 

Focus Area: Authentication 

Installation Party ➔ Use the latest emulator image ◆ Emulator build tools for API version 26 ◆ Android SDK Manager-> SDK Tools ● Google Play Services rev 30 or newer ● Google Repository rev 26 or newer ➔ DevFest App Repo Link http://bit.ly/2jv1HZX 

Firebase Console Setup ◆ Go to main site: https://firebase.google.com/ ◆ Create a new project. ◆ Add Firebase to your android app. ◆ Android Package name -> build.gradle/applicationId ◆ SHA1 hash of your debug key. (Process in next slide) ◆ Download google-services.json file 

SHA1 of debug key: ● Enter the command above: ☝ ○ keytool -exportcert -list -v -alias androiddebugkey -keystore ~/.android/debug.keystore ● The keystore password is android 

SHA1 of debug key 

Project Dependencies ● Go to main site. https://firebase.google.com/docs/android/setup ● Create a new branch name devfest-codelab ● Open build.gradle located in project's home directory, add firebase dependency and Google's Maven repository: ○ DevFestFirebaseApp/build.gradle ● Add INTERNET Permissions in Manifest file to enable us make network calls. ● Add Google Services file to app folder of your project. ○ The project will not build without this file. 

Project Dependencies ● Open app/build.gradle and add firebase auth dependency ○ compile 'com.google.firebase:firebase-auth:11.6.0' ● At the bottom of the file apply the plugin: ■ apply plugin: 'com.google.gms.google-services' ■ This plugin reads google-services.json file & injects some of its values into your build 

Signup Activity ● Firebase provides createUserWithEmailAndPassword() method to create a new user with email and password data. ● Use the link below to access the solution source code of SignUpActivity.java: ○ Exercise: http://bit.ly/2AUmvyf ○ Solution: http://bit.ly/2AIVug9 

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Run on Emulator ● Edit the Manifest file and make sign up activity the Lancher Activity. ● Run app on emulator 

Successful SignUp 

Success!! 

Login Activity ● Firebase provides signInWithEmailAndPassword()method to sign in the user. ● Use the link below to access the solution source code of LoginActivity: ○ Exercise: http://bit.ly/2zMFBG4 ○ Solution: http://bit.ly/2AOEqpN 

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Successful Login 

SUCCESS! I NOW KNOW 

Further Reading 1. Official Firebase Documentation: https://firebase.google.com/docs/ 2. Firebase Blog: https://firebase.googleblog.com/ 3. Firebase Android Tutorials Youtube: https://www.youtube.com/watch?v=kDZYIhNkQoM&list=PLl- K7zZEsYLmxfvI4Ds2Atko79iVvxlaq 

Thank you @thedancercodes TheDancerCodes thedancercodes