Since Kotlin was certified by Google as the official programming language for Android development in 2017, one of the most frequently asked questions is: Should I learn Kotlin for Android development? What are the advantages over traditional Java?
Now the answer is very clear - in recent years, Google has vigorously developed Kotlin-based Androidx libraries, Jetpack libraries, Compose libraries, and many new features are optimized for Kotlin. It can be said that without understanding kotlin, the development of the standard library in the field of Android development will be very hindered in the future, and Android development from Java to Kotlin has long been unstoppable.
Compared to the Java language, Kotlin's advantages are indeed very obvious:
First, extremely high productivity. Kotlin is a cross-platform statically typed language with a modern and concise syntax, and key features include null security, coroutines, data types, extension functions, etc.; this makes developers feel good: more efficient early development, fewer online problems in the medium term, and easier maintenance of late code. And that's exactly what Java can't do.
Second, strong compatibility. Kotlin can mix programming with Java (to be honest, this has a big impact), and we can move project engineering from Java to Kotlin in a gradual way without having to worry about rewriting a lot of code at once, creating new problems.
Third, writing code in Kotlin is friendlier and faster than Java. Kotlin absorbs the essence of many programming languages, its syntax is not as complex as Java, and it allows developers to define functions and static objects without using redundant classes, which makes the code easier to read and debug.
To this end, the Android departments of various major manufacturers are actively transforming, and most of the mainstream apps and libraries on the market are developed in the Kotlin language, and more than 80% of the top 1,000 applications on the Play Store use Kotlin.
Casually open a recruitment website, look at the Android recruitment needs of big manufacturers, basically have "require familiar with Kotlin" or "familiar with Kotlin language is preferred", and the salary is slightly higher overall (in contrast, the cost of Java development is acceptable in Kotlin's recruiters, after all, there are too many Java programmers on the market, and they can bargain in recruitment according to project needs).
Of course, some companies still use Kotlin as a plus. But it has to be said that under the same conditions, the candidates who will kotlin have a greater chance of winning.
Master Kotlin's methods efficiently
Kotlin is a typical language that is easy to learn and difficult to master: the syntax is concise, it is easy to get started, but it has many new features, it is not easy to control; even if you master the syntax of Kotlin, it is not easy to write elegant code, not to mention the application scenarios of Kotlin features and the underlying implementation principles.
Most of the learning paths are like this
Of course, it may be easier to have a Java foundation, but it is also a boost and a resistance, after all, the two languages are different in the way of thinking about writing code, such as immutability thinking, empty security thinking, expression thinking, function thinking, and coroutine thinking.
Kotlin coroutines, in particular, are all a bunch of new concepts: coroutines, scopes, contexts, launch, async, Channel, Flow, exception handling... It's confusing.
When I first nibbled on the tutorial, I also studied the source code of the concord and practiced in the work, stepping on the pit and stumbling on the learning, and it was very difficult to find reliable data (there are too many flowers on the market, and there are very few that can be explained thoroughly and improve the ability of learners).
After reading a lot of information, from the systematic level, I recommend the big guy in the circle Zhu Tao, who recently published a column "Zhu Tao · Kotlin Programming Lesson 1. Can't wait to share one of the learning graphs
Zhu Tao is how good, a moment below the details, but this column, should be your closest to the thinking process of top technical people, just online, read the updated several articles, very stunning, not preachy, not boring, with the GIF display, zero foundation can also be taken down. In a word, it is: basic + practical + source code, hand in hand to take you through the Kotlin grammar and codification.
The entire column compares the differences between Kotlin and Java syntax, and uses case studies to explain the use of Kotlin's new features. By the way, let's write a simple Android app with Kotlin. It is said that there will be irregular meals in the later stages, sharing the latest practices of Kotlin in various fields to further expand your Kotlin knowledge.
Now only 89, save 40, after purchase is permanently valid, recommended to you. If you're a new user, make a friend and come to 59 to get it.
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Only 89 in hand, the original price is ¥129
Grab a big handful online, why recommend this course?
I suggest you take another look at the author, that is Zhu Tao.
Zhu Tao is one of the first Android developers to explore Kotlin in China, the author of the blog "Kotlin Jetpack In Action", and a Google Certified "Google Developer Expert" (Android & Kotlin GDE). There are now 27 certified experts worldwide, but only 2 in China.
A big guy like Zhu Tao can share his years of experience without reservation, so that ordinary people can contact and learn that really how much money can't buy it.
Eager to learn? Will it be "teaching to be human" and "hypnotic lessons"?
Studious.
I admire Zhu Tao's point, that is, he can make "boring content vivid and interesting", in the form of animated graphs, and strive to be simple and easy to understand, for example, in order to let you understand the use of Kotlin's extension function, Lao Zhu carefully made the conversion animation of ordinary functions and extension functions:
An original set of codigator thinking models
Coroutines have always been a difficult point for Kotlin to learn, and Lao Zhu's original model shows the relationship between coroutines, threads and processes, helping you build a clear and specific coroutine model in your brain.
Drill down into coroutine suspend functions
This video has been crafted so that you can see the details of the hoating and recovery behind the coroutine code.
Personally, I think that the fastest way to learn a new technology is to do it, and it is more reliable to directly pick up the project than to read many articles. This course is designed with a large number of practical projects, and integrates Zhu Tao's original corroborative thinking model, so that you can intuitively experience the charm of Kotlin and get started quickly.
I conveniently posted the catalog here
Want to get started with "Zhu Tao · Kotlin Programming Lesson 1" attention, again emphasize the offer, the hand is slow
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Of course, recommending Kotlin does not mean that Java is not good, and programming languages are like weapons to developers. We just combine our actual needs, choose the most suitable weapon for ourselves, and try to do more with less.
Xiecheng and other "thought gold bars" are buried by Zhu Tao in the column at all times, and you need to read and ponder repeatedly to get an increase in experience points.