Kotlin & Android Development Course: Build a Quiz Application

In this Kotlin and Android course, you will learn about collections, generics, lambdas, Android Studio, widgets, and more. You will also learn how to build a full quiz application for Android devices.

✏️ Alexandru Cristian created this course.

Chapters
⌨️ (0:00:00) Introduction
⌨️ (0:01:12) List, Set, Map
⌨️ (0:18:00) Mapping
⌨️ (0:29:51) Zipping and Association
⌨️ (0:44:57) Flatten
⌨️ (0:54:50) String Representation
⌨️ (1:05:51) Filtering
⌨️ (1:24:25) Test preifactes - any(), none(), all()
⌨️ (1:27:00) Plus and Minus Operators
⌨️ (1:30:16) Grouping
⌨️ (1:35:10) Retrieve Collections parts
⌨️ (1:55:15) Retreieve Single Elements
⌨️ (1:59:57) Aggregate Operations - sum(), count(), average(), minOrNull(), maxOrNull()
⌨️ (2:04:50) Comparable and Comparator
⌨️ (2:32:10) Binary Search
⌨️ (2:46:32) Generics - Type Paramenters and Casting
⌨️ (3:02:54) Generics - Upper Bounds
⌨️ (3:14:20) Generics - Covariance and Contravariance
⌨️ (3:26:49) Generics - Type Erasure and reifeid keyword
⌨️ (3:39:41) Generics - Where keyword; and 2 Upper Bounds
⌨️ (3:47:14) Access Modifiers
⌨️ (4:03:42) Packages and Imports
⌨️ (4:15:27) Exceptions - Try Catch, Finally
⌨️ (4:24:52) Lambda Functions
⌨️ (4:43:31) Lambdas - it modifier
⌨️ (4:47:17) Scope Functions
⌨️ (5:11:17) Download Android Studio
⌨️ (5:15:26) Android Studio Presentation
⌨️ (5:31:27) Android File Structure
⌨️ (5:38:45) Android XML and Design
⌨️ (5:47:49) Android XML properties
⌨️ (5:50:48) Android - what is does findViewById() function?
⌨️ (5:58:19) String XML
⌨️ (6:01:52) Android Manifest
⌨️ (6:09:06) Android Button and TextView
⌨️ (6:16:56) Android Button OnClickListener
⌨️ (6:26:11) Android EditText
⌨️ (6:37:41) Android App - Convert Inches
⌨️ (6:50:23) Android App - Convert Inches 2
⌨️ (7:00:55) Android App - Change Color
⌨️ (7:12:40) Android Radio Buttons 1
⌨️ (7:20:45) Android Radio Buttons 2
⌨️ (7:29:24) Android SeekBar
⌨️ (7:47:03) Android Toggle Button
⌨️ (7:53:00) Quiz App - UI Welcome Screen
⌨️ (8:10:15) Quiz App - Creating Question Model
⌨️ (8:30:07) Quiz App - Setting the QuizActivity
⌨️ (8:42:43) Quiz App - Connecting the UI with the model
⌨️ (9:01:14) Quiz App - Adding the Button functionality
⌨️ (9:17:57) Quiz App - Selecting the Right and Wrong answers
⌨️ (9:32:35) Quiz App - Setting up the UI for ResultActivity
⌨️ (9:36:37) Quiz App - Improve Code
⌨️ (9:38:57) Quiz App - Sending data to Result Activity
⌨️ (9:55:12) Quiz App - Solve score bug

🎉 Thanks to our Champion and Sponsor supporters:
👾 davthecoder
👾 jedi-or-sith
👾 南宮千影
👾 Agustín Kussrow
👾 Nattira Maneerat
👾 Heather Wcislo
👾 Serhiy Kalinets
👾 Justin Hual
👾 Otis Morgan
👾 Oscar Rahnama

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[TheCubingChronicles]

Thank you! I was actually looking for a tutorial like this yesterday!

[phisit]

THIS IS PERFECT !!! <3 <3 I've been looking for something like this for awhile now but I have 0.01% of programming skills. <3 Thank you so much !

[mystikalese]

For anyone wondering, in the section selecting the right and wrong answers, if your code isn't working, make sure you have this line in your selectedOption function:

selectedAnswer = selectOptionNumber

[carlosredfield]

about 1:47:22 The first two elements, "one" and "two", have a length of 3, so they are eliminated. However, the third element, "three", has a length of 5, which makes the condition false. Therefore, dropWhile stops removing elements and returns the rest of the list from that point, which is ["three", "four", "five", "six"].

[anon-fzbo]

pretty cool language overall, still prefer java sometimes simply coz some features kotlin adds seem like syntactic sugar more than anything. ie mapping a key to value using the syntax '{keys_value} to {values_value}' vs simply calling a method like HashMap<int, int>.add(intKey, intValue);

[fvkkdjs]

amazing work alex really appreciate the effort

[Sky-wpvj]

Nice i was looking for something like this to get back int Java and JavaScript thanks 👍🙏

[maxfrischdev]

I wish the actual tutorial would have the same audio quality as the Intro, not 80s -phonecall style 😅🙈

[faustipez]

This is actually a very good course, you start from Kotlin basics to learn how to manage android widgets through the designer and XML and build a quiz app with interesting interactivity. I highly recommend this course for anyone wanting to learn the basics of Android Development (which is not that easy, to be honest), I know this would sound crazy, but I think you should know the basics of HTML and CSS (especially flex) to grasp some of the concepts around XML and make the UI design easier to understand.

[chrislainngondo]

Amazing tutorial we need more with flutter

[satishksharma]

I tried to find full tutorial for retrofit with kotlin, but not find so I request please make a video on it.

[Dibyendu.M]

Thanks for this video. I request you to make a complete project on Jetpack Compose.

[RVAraghav]

Any upcoming plans on iOS development? (Swift, SwiftUI)

[barringtonlevy]

Hey I like the tutorial but I think there's a mistake in the binary search function. Shouldn't high be assigned to mid - 1?

[Albert-Dyck]

6:15:44 I needed to press the emulator in order to make the red underlining disappear after I reconnected the layout to activity_main.

[usmanmarkaz]

We need more projects in React native plz make...

[yourmama]

Wow...just completed the course..
Amazing experience

[arunbastin]

Please upload more dotnet tutorial and build real time projects

[YaHagh]

Please build a similar tutorial for SwiftUI

[PurnaPlayss]

Can anyone share the source code sir has written with all projectwise