Getting Started with Kotlin on Android


Presentation Description

Kotlin is a statically typed language, with features such as higher-order functions, lambda expressions, operator overloading, string templates and more, Kotlin has much more to offer than Java. Because java and Kotlin are highly interoperable, they can be used together in the same project. I hope this tutorial has caught a glimpse of how useful Kotlin is for android development. You should consider it for your very next project!


Presentation Transcript

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OVERVIEW - KOTLIN The Language - Kotlin is statistically typed opensource language just like Android under Apache 2.0. It is fully supported in Android studio 3.0 and the higher version of it. This thing has widened the task of developing a new application with Kotlin files in an easy way. You can write Android apps for Kotlin. Add Kotlin files to your current project and convert Java to Kotlin. Then you have privileges to utilize all of the android studio’s existing tools with your ongoing Kotlin code for example link checking debugging and so on.

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BUILD YOUR FIRST ANDROID APP IN KOTLIN Few ensuing steps we are showing you those are the basic steps on how to get started with Kotlin for your ongoing Java android project. It depends on the project setup or business requirements it might be needed to keep your running java source code working for as long as it can. You might want to try it out ‘The cool thing’ that is boosting in the android app development market. Then let us uncover the announcement by Google I/O that is Kotlin is an officially supported top computing language for an Android ecosystem.

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STEPS FOR ANDROID → KOTLIN This tutorial will walk you through how to create a basic Kotlin application for Android using Android studio I D E from scratch. Step 1: Setup the Kotlin Plugin in Android Studio Step 2: Create a new android project Step 3: Apply Kotlin Plugin to the project Step 4: Convert your Activity java code to Kotlin.

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STEP 1: SETUP THE KOTLIN PLUGIN IN ANDROID STUDIO The Kotlin plugin is embedded with your Android studio IDE Any version higher than 3.0. In case you’re using any version below than that It needs the manual installation of Kotlin plugins. To do so Navigate to Android Studio → Preferences →Plugins → Browse Repository → type “Kotlin” in search box → Install. You need to perform this action once per installation of android IDE. For more visit:

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Done with your installation Now you might need to restart the android studio.

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STEP - 2 CREATE A NEW ANDROID PROJECT Now that your Android studio is already with the Kotlin plugins let’s move to further step that is - create a new android project in the same exact way we that used to do. Navigate to File → New → New project. Hit the ‘Create empty activity’ option in the end.

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Step - 3 Apply Kotlin Plugin to the project Now lets integrate the Kotlin plugins to your project. Albeit there is an automated tool to perform this Sometimes the tools create the clumsy situation. We will do the manual process of applying the plugin to build.gradle file. To add Kotlin Gradle plugin: For the configuration we need to add the plugin priory to root project’s In a similar way you can do this for Gradle plugin. By adding the plugins to dependencies closure in the project that is in build.gradlefile.It would look same as this:

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We need to create a variable as shown above. This is because you may have other places in the project that needed a reference to the Kotlin version. If in case we place variable outside the closure the variable will not be there before the project is completely built and it will be the false alarm for built action. To apply the Kotlin Android Plugin: After adding the gradle plugin it is time to apply the plugin. To achieve this we need to add the apply plugin Kotlin → Kotlin-android to the app modules build.gradle file.

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STEP 4: CONVERT YOUR ACTIVITY JAVA CODE TO KOTLIN. You are all prepared for whatever need to complete this action though your ‘Empty activity’ generated code is still in the Java programming language. Wait a minute for us the Kotlin plugins can help in terms converting the java code to Kotlin. Right now the java code looks something like this:

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Now the final action you need to perform is Select the File and navigate it to Code → Convert Java file to Kotlin file or else hit Command + Alt + Shift +K. After the conversion of our Java code to Kotlin Our ‘empty Activity will look like the this:

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Extra shot: I recommend if you’re really into such an amazing thing about Android stay updated with your Kotlin versions. Definitely it is a pretty much easy job to start and continue with the Kotlin as it is still in trend to be worked on. As the community and the usage is growing so does Kotlin itself You need to update with all the frequent changes and updates. The Kotlin Android studio IDE plugins help you manage the Kotlin versions. For that navigate to Tools → Kotlin → Configure Kotlin plugin Updates as shown below:

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Now you have to select the update channel - ‘’Stable’. Which is currently your edge version. To get the best out of it or to be fluent: Reliability over minimized coding logic is recommended. It is obviously a good thing to establish a coding conversation that provides ease to others. Kick start your journey with Kotlin and give your Android programming skill a new experience.

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Kotlin is crisp and expressive. It has safety features for nullability and immutability It will make Android app much performant by default - And that is the main requirement of any online app services. Android APIs majority looks exactly the same as the matching Java programming. Except now you can combine those separate methods calls with Kotlins syntax features. As the market facing dramatic changes you might also want to hit the ground Then Kunsh Technologies a leading Android App Development Company is the answer to your all Android solutions. Hire us and give your ideas a platform to rise above. Conclusion

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