Android-Roadmap

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Android-Roadmap

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This road-map for android development that can help you to improve your skills with very recommended articles and other resources.

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README.md

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# :rocket: Android-Roadmap

#### :raising_hand: [Follow me on LinkedIn](https://www.linkedin.com/in/ahmed-she7ata/)
#### :information_desk_person: [Follow me on Github](https://github.com/ahmed-shehataa)
#### :two_men_holding_hands: [Join my telegram channel to be up to date for new android articles and features](https://t.me/androidy_me)

----

This road-map for android development that can help you to improve your skills with very recommended articles and other resources.

## Table content

| Section |
| ----- |
| About android |
| Why java first? |
| Java resources |
| Android basic |
| Android intermediate part 1 |
| Android intermediate part 2 |
| Android advanced part 1 |
| Android advanced part 2 |

---

**Before we start providing you with resources**..    
## :cyclone: What about android as operating system(OS):

Android is a mobile operating system based on a modified version of the Linux kernel and other open source software.   
**Designed for:**   
  
- Smartphones & Tablets :iphone:
- Tv :tv:
- Wear OS :watch:
- Android things :crystal_ball:
---

`First of all we should learn a programming language from [java or Kotlin] and XML [for building the user interface(UI)]`

## I recommend you to start with java as a programming language.. why? :sweat_smile:

- Most of open source was written with java.
- Most of apps built with java and if you worked somewhere at a company, how do you refactor this app that built with java!
- There are much more Java tutorials and almost every solution for Android problems on pages like Stack Overflow from the last years have been written in Java.

**`Don't worry Java is not going to be obsolete` :muscle:**

## Learn java: (Due to 3 or 4 weeks)

 <img src="img/java.png" width="650" >

#### :clipboard: Resources: `choose only one resource (Arabic or english)`     
## Arabic   
- [Java from zero](https://www.youtube.com/playlist?list=PLQYjhn7xrRnaHRNU3xUspKQv1wspDJ28O)
- Abdullah Almehmadi:   
  1. [Java 101](https://www.youtube.com/watch?v=3QC6Zpz3As4&list=PL28DDB2DCF87BEE43)   
  2. [Java 102](https://www.youtube.com/watch?v=9w1jLen1lRU&list=PL138BE19EA2405C94)   
  3. [Java 103](https://www.youtube.com/watch?v=d1b2-99QzEo&list=PLA94A6FB67AB4CD0D)   
  4. [Java 104](https://www.youtube.com/watch?v=SjbXtRjavjA&list=PLqmVQqNLdVv11bup4o0bRR4zxG2Gu05gX)   
- [OOP](https://www.youtube.com/watch?v=M3Na5luSx50&list=PL1DUmTEdeA6Icttz-O9C3RPRF8R8Px5vk)
## English Crash course
[Check this](https://m.youtube.com/playlist?list=PLTTTcaxrixZT6v8k_QVSALXHX3KnaruuX)

<!--
1. For Java basics syntax 
[Check this](https://youtu.be/eIrMbAQSU34) 
OR 
[Check this](https://www.youtube.com/watch?v=kJ0PKUMWnQI&fbclid=IwAR37iuJILs0vRjkyW7-ZIPz-8kd_QEcl_5QgubmCgpdCCmf4ksNXRsuufMk)

2. Java OOP
// TODO add a good resource here.

-->
### Before moving to the next level be sure that you have a good knowledge about:   
- OOP.
- Looping (for - while - doWhile).
- Make a decision (if else - switch).
- Exception handling (try catch).
- Casting, static, final, generics.
- Using interface and abstraction and Anonynmous object.
- :point_right: **Build a simple project with java like ( Banking or Hotel or SuperMarket system)**.

`Now you are ready to start with android`

## Basic level:
Now you are ready to build user interface using xml and write some java code at android studio. 

 <img src="img/ui.png" width="650">

#### :clipboard: Resources:   
**English**   
Udacity:   
1. Android Basics: User Interface  (due to 1 week)   
https://mena.udacity.com/course/android-basics-user-interface--ud834

2. Android Basics: User Input  (due to 2 weeks)   
https://mena.udacity.com/course/android-basics-user-input--ud836

3. Android Basics: Multiscreen Apps  (due to 1 Month)   
https://mena.udacity.com/course/android-basics-multiscreen-apps--ud839

After you have learned to use Relative and Linear layout.. there is another amazing thing called **Constraint layout** to build a responsive layout   
[check this playlist](https://www.youtube.com/watch?v=4N4bCdyGcUc&list=PLrnPJCHvNZuA80lNWNCLICR3qYzhw3iPI)

**`Go a head and build a project and use the tools that you learned in basic level`**

### After that you are ready to work with database and networking so..

### Database in android:

 <img src="img/rdatabase.png" width="450">
 
In android world.. the database commes from different sources (Local & Remote).

**Local:** We use shared preference and room database(based on sqllite).

**Remote:** We can use firebase or some thing called API.

**:point_right: `Don't Worry right now about that, we 'll provide you with useful resources to learn that`**

## Intermediate part 1: 
Before that you should learn an important view called recycle view.. Why? 
Most of android apps need to display a list of any type of data for users so the best way to handle that using recycler view. 

 <img src="img/rv.png" width="650">

#### :clipboard: Resources:   
1. [check this tutorial](https://www.vogella.com/tutorials/AndroidRecyclerView/article.html)

What is Database generally       
#### :clipboard: Resources:   
2. [simple tutorial](https://youtu.be/FR4QIeZaPeM)

then start with learning sqllite commands before implement it with android studio:
#### :clipboard: Resources:   
3. ProgrammingKnowledge: [check this](https://www.youtube.com/playlist?list=PLS1QulWo1RIa0-Cs2Qx6GFyiIVVVS9lCS)

`Additional but very useful:`   
*To master sqllite* check this [Sqllite fully tutorial](https://www.sqlitetutorial.net)

Learn how to store data into your local database of your application by learning room database.   
#### :clipboard: Resources:
4. **TODO** Add a room db resources.

---

## Intermediate part 2:
You should learn networking basics: (working with a remotely data)
#### :clipboard: Resources:
Android Basics: Networking  (due to 5 weeks)
1. [check this](https://mena.udacity.com/course/android-basics-networking--ud843)

So now you need to learn about recycler view, fargments, notification, room database and working with some libraries and more..
#### :clipboard: Resources:
Udacity:  
2. [check this](https://mena.udacity.com/course/new-android-fundamentals--ud851)

Then you should learn the best libarary in android development that working with APIs called (Retrofit)   
#### :clipboard: Resources:
Coding in flow.   
3. [What is API](https://youtu.be/s7wmiS2mSXY)
4. [check this](https://www.youtube.com/watch?v=4JGvDUlfk7Y&list=PLrnPJCHvNZuCbuD3xpfKzQWOj3AXybSaM)

#### Now you need to learn some thing awesome called (Material design)

 <img src="img/material.png" width="500">

Material is an adaptable system of guidelines, components, and tools that support the best practices of user interface design. Backed by open-source code, ...

Material Design for Android Developers:    
4. [check this](https://eu.udacity.com/course/material-design-for-android-developers--ud862)

**:point_right: `Go a head and build a project and use the tools that you learned in basic level and Intermediate part 1&2`**

## Advanced part 1:
Alright, you need to add some more features for your app like playing music, integrate google maps into your app, push notification and more..   
#### :clipboard: Resources:
Advanced Android App Development.  
1. [check this](https://mena.udacity.com/course/advanced-android-app-development--ud855)

### After that I think you are ready to learn kotlin:

 <img src="img/kt.jpeg" width="650">

#### :clipboard: Resources:   
**Arabic**

- [Kotlin Basics](https://www.youtube.com/watch?v=B6OHcdzASVk&list=PLb6ZzJ93PVworJwMuGgBrp08Ijiu1Dnre)

- [Kotlin Advanced](https://www.youtube.com/watch?v=Ju5ZIhsJna4&list=PLb6ZzJ93PVwpCO911RLi56PBNiLdEkL7k)

**English**

- [Kotlin crash course](https://www.youtube.com/playlist?list=PLsyeobzWxl7rooJFZhc3qPLwVROovGCfh)

**After finishing this course above you should be sure that you are good at:**   
- val, var, lateinit
- inline function
- Scoped funs
- const VS val
- data class
- sealed class
- Higher order funs and lambda experssion

3. What is android jetpack?    
[check this video](https://youtu.be/LmkKFCfmnhQ)    
Get hands dirty with Android Jet-pack.

4. Learn more about Architecture pattern (MVVM, MVP, MVI).

**:point_right: `Go a head and build a project and use the tools that you learned in the previous levels`**

## Advanced part 2:
- Now, you need to know more about retrofit and it's customization.
- Learn some design patterns (Builder, singleton, factory, prototype, observer, ...).
- Kotlin coroutines. 
- Testing.
- Reactive programming.
- Jetpack Compose 
- Dependency injection (DI).
- Sensors.
- Security.

### More about Retrofit:
  1. [Making Retrofit Work For You](https://youtu.be/s7wmiS2mSXY)
  2. [Okhttp interceptors](https://square.github.io/okhttp/features/interceptors/)
  3. [Build a custom retrofit adapter](https://medium.com/android-news/building-your-own-retrofit-call-adapter-b198169bab69)
  
### Kotlin coroutines:
  1. [The ABC of Coroutines](https://www.youtube.com/watch?v=bM7PVVL_5GM)
  2. kotlin coroutines by tutorials (Book)
  
### Dependency injection:
  1. [Manual DI](https://developer.android.com/training/dependency-injection/manual)
  2. [Service locator VS Dependency injection](https://medium.com/mobile-app-development-publication/dependency-injection-and-service-locator-4dbe4559a3ba)
  3. [Dagger](https://developer.android.com/training/dependency-injection/dagger-android)
  4. [Dagger hilt](https://developer.android.com/training/dependency-injection/hilt-android)

### Jetpack Compose:
  1. [Why compose?](https://developer.android.com/jetpack/compose/why-adopt)
  1. [Compose pathway](https://developer.android.com/courses/jetpack-compose/course)
  2. [Compose Camp](https://goo.gle/3DgqJmj)
  
### Testing:
  1. [Why testing?](https://youtu.be/EkfVL5vCDmo)
  2. [Testing types in android](https://developer.android.com/training/testing/fundamentals) 
  3. [Unit test playlist](https://www.youtube.com/watch?v=EkfVL5vCDmo&list=PLQkwcJG4YTCSYJ13G4kVIJ10X5zisB2Lq)
  4. [Unit test talk from `Eng. Ahmed Adel`](https://www.youtube.com/watch?v=AmaHlsd4vUg)

## What after that: :thinking:   
I think you need to keep learning more and more..

Android-Roadmap

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