One, the introduction

As the slogan on the official website describes: kotlin, is a modern language that allows programmers to write code with more happiness.

And, as wikipedia says:

JetBrains hopes Kotlin can drive sales of IntelliJ IDEA

Kotlin is a language for money, and I believe it will become a language for money.

JetBrains is a company that really treats programmers like people and programmers like users. From the pace of Kotlin’s iteration and release, we can see that they iterate on Kotlin just like we programmers iterate on our company’s app. They attach great importance to user experience and programmer’s development experience. Whenever Java syntax is painful to write, they improve it. What Java programmers lack, they build for Kotlin. As a programmer, IT feels really good.

I’ve been working on Kotlin for more than two years now, and I can feel the happiness that Kotlin brings, and even, when I write kotlin, sometimes I get a sense of surprise. Let me have a kind of feeling: Oh… It turns out you can still write code like this, you can still have this syntax.

Having written Java code for nearly 10 years, I’ve grown accustomed to accepting almost everything about Java, including the unimaginative ways I thought programming was supposed to be done.

Kotlin is subverting everything I’ve been used to.

Of course, this is not to degrade Java, Java is not only excellent but also great, Java iteration 24+ years, Java ecology is unmatched by many languages, it is the excellence of Java has kotlin, Clojure, Groovy and a series of excellent languages, Java’s greatness is also impossible to replicate.

There are many friends around me, wondering whether to learn Kotlin or Flutter?

On the one hand, they felt that Java was enough. On the other hand, they felt that Dad Google was developing his real son, Flutter, and that his adopted son Kotlin was not of the same blood after all. And flutter’s ability to span multiple ends is greater than Kotlin’s, so it is concluded that there is no need to learn from Kotlin.

However, there are many projects and many companies using Kotlin, including official Google documentation and demos. Again began to sway, tangled, confused, anxious. I think kids make choices. I learn what the company needs.

We can see that a lot of companies hiring Android developers now require kotlin programming skills, so it’s hard to keep up with the trend.

In order to help you get started and learn Kotlin in depth, I recently compiled and published a “Advanced Kotlin Intensive Combat Learning Manual (with Demo)” for Android developers to learn Kotlin advanced. The content covers Kotlin introductory tutorial, Kotlin Pit Avoidance guide, Kotlin Jetpack combat three modules. The GitHub star is 8.3K.

Chapter 1 introduction to Kotlin

  • Kotlin overview
  • Kotlin compared to Java
  • Use opportunely Android Studio
  • Recognize the Kotlin basic type
  • Go to Kotlin’s array
  • Go to Kotlin’s collection
  • Collection problem
  • The complete code
  • Basic grammar

Chapter two Kotlin’s Guide to pit avoidance

  • Method inputs are constants and cannot be modified
  • Do not Companion, INSTANCE?
  • Java overloading, how to skillfully transition in Kotlin?
  • Void call in Kotlin
  • Kotlin overwrites a method in a Java parent class
  • Kotlin went rogue, even TODO!
  • The pit in is and as
  • Kotlin’s understanding of Property
  • Also the keyword
  • TakeIf keyword
  • TakeIf keyword
  • Writing the singleton pattern

Chapter 3: Kotlin Jetpack Combat

  • Start with a Demo of worshiping a god
  • What was Kotlin’s experience writing Gradle scripts like?
  • The triple realm of Kotlin programming
  • Kotlin higher order functions
  • Kotlin generic
  • Kotlin extension
  • Kotlin commissioned
  • “Unknown” debugging techniques for coroutines
  • Diagram coroutine: suspend

Series of knowledge points in open source projects: github.com/Android-Alv… Has been included, which contains different directions of self-study programming routes, interview questions set/interviews, and a series of technical articles, etc., resources continue to update…