kotlin for android developers pdf

Original title: Create Your first Android project using Kotlin (KAD 01)Antonio LeivaTime: Nov 21, 2016Original link: http://antonioleiva.com/create-first-android-project-kotlin/The original author begins the first lesson of the Kotlin series: Create the first

JavaScript, can run well on devices without a JVM;JetBrains has already open source its Kotlin programming language under the Apache license;Recently Kotlin has officially become the official Android language development, attracting a large number of developers to come to learn;Second,

Use Kotlin to create the first Android Project (KAD 01) and kotlinandroid Original article title: Create your first Android project using Kotlin (KAD 01) By Antonio Leiva Time: Nov 21,201 6 Link: http://antonioleiva.com/create-first-android-project-

. However, we may encounter problems when creating custom views by inheriting common views. Custom views need to rewrite one or more constructors to work properly, but we can't do that. Fortunately, the automatic Kotlin M11 begins, and we can declare multiple constructors, similar to Java. The following is a square ImageView:classSquareimageview:imageview{public Constructor (Context:context): Super (context) {} Public Constructor(Context:context,

level, it avoids the annoying NULL pointer exception and so on.3. Multi-PurposeBuild server applications, Android apps, and web applications4. Interaction with JavaIn practice, you will find how convenient this is. Kotlin is a relatively new language. The current version is 1.0 beta. It captures some of the pain points that cannot be changed after so many years of development of the Java language, and leav

know where to go. Obviously, Kotlin also belongs to the latter.Kotlin has almost all of the syntactic features that C # has and Java does not have, and may be better in some ways. Kotlin has a lot of FP features, but it's not as complex as Scala, and compiles much faster than in Java, so you can learn the advantages of Java and Scala, but discard their drawbacks.Advanced grammar This thing, the nature of t

independent variables. This is because Java does not have such language features. In Java, you need to solve it by generating function overloading based on your needs. In Kotlin, you can use @ JvmOverloads to annotate the automatically generated code. The Code is as follows: 1 class KotlinView @JvmOverloads constructor(2 context: Context, attrs: AttributeSet? = null, defStyleAttr: Int = 03 ) : View(context, attrs, defStyleAttr) Conclusi

Release Android Function Energy (I): Lambda expressions in the Kotlin language, kotlinlambda Original article title: Unleash functional power on Android (I): Kotlin lambdas Link: http://antonioleiva.com/operator-overloading-kotlin/ Antonio Leiva (http://antonioleiva.com/abou

Google announced at this year's I/O developers conference that the Kotlin language should be used as the first-level programming language of Android development. Kotlin is developed by JetBrains, interoperable with Java 100%, and has many new features that Java does not yet support. So you know what

Original title: Unleash Functional Power on Android (I): Kotlin lambdasOriginal link:http://antonioleiva.com/operator-overloading-kotlin/Original Antonio Leiva (http://antonioleiva.com/about/)Published in the original: 2015-08-05While Java 8 already contains some functional tools, and as you might imagine, Android