button, an image, and some scrollable text. if you find code for custom dialog written in java the android studio will convert it to kotlin – EL TEGANI MOHAMED HAMMAD GABIR Aug 29 '18 at 11:55. Die Pflege des Plug-ins kotlin-parcelize soll auf lange Sicht weiter laufen. Bedeutet: Ein in Kotlin geschriebenes Programm wird in einen Bytecode übersetzt, der von der JVM gelesen werden kann. Janitor: Unsere Beispielanwendung. To see an app's Android hierarchy in the Project pane, click the, When you need to add new dependencies to your project or change dependency versions, edit the, All code and resources for an app are located within the, To add features, components, and permissions to your Android app, edit the, To create an Android virtual device (an emulator) to run your app, use the, To run your app on a physical Android device using Android Studio, enable USB debugging on the device. Learn more. A computer running Windows or Linux, or a Mac running macOS. Android Kotlin Fundamentals codelabs landing page. A USB data cable to connect your Android device to your computer via the USB port. If you're working through this codelab on your own, feel free to use these homework assignments to test your knowledge. 1. isNullOrEmpty() function The standard approach in Kotlin to check for a null or an empty string is with isNullOrEmpty() function. 1answer 18 views how to resolve FATAL EXCEPTION: DefaultDispatcher-worker-4. backward compatibility of the app (with older versions of Android), and how to Deshalb hat sie aber auch viele moderne Features und macht vieles besser als Java. This article explores different ways to check if a string is empty or null in Kotlin. These, I've checked already and do not work: How to create an Android project from a template. The Android Emulator is an independent application, and it has its own system requirements. Wenn Sie mehr über die Programmiersprache Kotlin erfahren möchten, lesen Sie die Dokumentation. If you are using a Linux or Windows system, you may need to perform extra steps. You also explore what an Android project looks like. You'll get the most value out of this course if you work through the codelabs in sequence. Improve this question. Entwickelt wurde sie ursprünglich nur für die Java Virtual Machine (JVM). The purpose of this repo is to follow up Clean Architecture principles by bringing them to Android. In this codelab, you learn about fragments, which represent a behavior or a portion of the user interface in an activity. I'm developing a simple text to speech app for Android using Android Studio(Kotlin). Define navigation paths and start an external activity. Run the HelloWorld app on virtual and physical devices. It is set an inputType=phone. Ein paar Features des Kurses: Du lernst Schritt für Schritt und in einzelnen Schritten - ideal für Einsteiger. setDate. which consists of clickable TextViews and Buttons that change color when tapped. the DessertClicker app in which a user purchases desserts by tapping on an image. Introduction. Emacs has a Kotlin Mode in its Melpa package repository. Bemerkungen . In this task, you explore the HelloWorld project in Android Studio and learn the basics of developing with Android Studio. Unit 1. Additionally, JUnit4 doesn’t play well w/ lambdas. I've checked the ... java android kotlin. It's up to the instructor to do the following: Instructors can use these suggestions as little or as much as they want, and should feel free to assign any other homework they feel is appropriate. All the course codelabs are listed on the Android Kotlin Fundamentals codelabs landing page. Simply call the CalendarView date property and provide the date as a Long value. Create a fragment, define navigation paths, and start an external activity. Make sure that your system meets the latest system requirements. Note: Many more versions of the Android system are available than are shown in the Recommended tab. navigate online documentation. 27 6 6 bronze badges. All the course codelabs are listed on the Android Kotlin Fundamentals codelabs landing page. Kotlin for JavaScript. By default Kotlin classes are final, and so Mockito has a hard time mocking them. You'll get the most value out of this course if you work through the codelabs in sequence. Challenge: Now that you are set up and familiar with the basic development workflow, do the following: This section lists possible homework assignments for students who are working through this codelab as part of a course led by an instructor. I use Google TTS as my engine. You complete Json2Kotlin generates POJO style native Kotlin code for web service response mapping. I would like to know if there is a way to check if this EditText is null.. How did you open the project? Unplug the USB cable and plug it back in. JVM. For links to other codelabs in this course, see the Android Kotlin Fundamentals codelabs landing page. I've already looked at this question: Check if EditText is empty. Learn about Activity and Fragment lifecycles, how to handle complex lifecycle Mesibo Messenger for Android - Kotlin. Learn the basic anatomy of an Android app project, how to add images to your app, how to enable Here's what the app looks like: In this task, you create a new app project to verify that Android Studio is correctly installed. Kotlin is known for its conciseness and this, in practice, translates into higher productivity. Along the way, you complete the DiceRoller app, To let Android Studio communicate with your Android device, you must enable USB debugging in the Developer options settings of the device. In this codelab you create and run your first Android app, HelloWorld, on an emulator and on a physical device. Um mit Kotlin zu starten, kann der Compiler von der offiziellen Website heruntergeladen werden. If Android Studio does not recognize your device, try the following: If your computer still does not find the device or declares it "unauthorized," follow these steps: You may need to install the appropriate USB driver for your device. complete the AboutMe app, which showcases interesting facts about yourself with a Even more, 67% of professional Android developers who use Kotlin say it has increased their… Default voice is female and I want to add male voice option too. You should not get any errors. Select your mobile device as an option and then check your mobile device which will display your default screen − Android - Clean Architecture - Kotlin . In Kotlin we can set a date in calendar very easily. Android。Kotlin区分了可变集合和不可变集合(lists, sets, maps等)。下面是对kotlin里面集合操作符的说明以及怎么查看kotlin转换成java代码。集合有：Iterable，Collection，MutableIterable，List，MutableList，Set，MutableSet，Map，MutableMap。操作符有filter all associate contain等 Validator. Leave all the other checkboxes cleared, and click, To view the project as a standard Android project hierarchy, select. situations, and use logging to help debug and track the state of the app. When the download is complete, click Finish. Note: This kotlin version is created by converting java code using Android Studio; If this is the first time you are using kotlin in your project, Android Studio might display a warning that Kotlin is not configured in the project. Virtual devices can use up a lot of disk space. 1. validator = { it.isNotBlank() } validator = { it.length >= 6 } Boolean. Create multiple layouts and add user interactivity to your Android apps. You also see information about the Android Package Kit (APK) being installed. These images use a lot of disk space, so only a few are part of your original installation. Durch die Kompatibilität zu Java 6 findet Kotlin zudem im Android-Umfeld Anklang, da die Sprache prägnanteren Code ermöglicht und zusätzlich die funktionale Programmierung unterstützt. If you get any warnings, ignore them. A dialog should appear on the device, asking to allow USB debugging. Bean Validation is the Java standard for validation and can be used in Kotlin as well. 1,832 2 2 gold badges 18 18 silver badges 52 52 bronze badges. but it does not address the case where inputType=phone. Why use Kotlin for Android Development? ( rme ) Interoperable Kotlin is 100% interoperable with the Java programming language, so you can have as little or as much of Kotlin in your project as you want. 14.9k 5 5 gold badges 44 44 silver badges 99 99 bronze badges. However, there are also two popular alternative libraries for validation available in Kotlin: Konform and Valiktor.Both implement validation in a more kotlin-like way without annotations. Calendar View Methods. We can get the … the AndroidTrivia app, which is a game in which users answer trivia questions about Kotlin for Native. Just write the generated Kotlin source files to the directory specified by processingEnv.options["kapt.kotlin.generated"], and these files will be compiled together with the main sources. All the course codelabs are listed on the Android Kotlin Fundamentals codelabs landing page. calendar_view.date = 1463918226920L // 22 May 2016 getDate. Build an interactive app June 2020 Learn the basic anatomy of an Android app project, how to add images to your app, how to enable backward compatibility of the app (with older versions of Android), and how to navigate online documentation. input type number package com.example.www.myapplication import android.support.v7.app.AppCompatActivity import android.os.Bundle import kotlinx.android. You should have at least one year of experience in object-oriented programming, with at least an understanding of Java and Kotlin. How do you check if an EditText is empty? Die Verwendung von Kotlin mit Android Studio ist eine einfache Aufgabe, da Kotlin von JetBrains entwickelt wird. Android Architecture Components Samples - An advanced sample that uses the Architecture components, Dagger and the Github API, in Kotlin. Check to make sure the app has the following: Start the next lesson: Anatomy of Basic Android Project. In this codelab, you learn how to install Android Studio, Google's Android development environment. It is worth saying that the idea is to take advantage of the Kotlin Programming Language features plus also pull in lessons learned and ideas from other interesting aproaches like Functional Programming. In diesem mehrteiligen Tutorial betrachten wir die wichtigsten Sprachfeatures anhand einer Beispielanwendung. Kotlin for Android. Android development and can share their results if they win. WorkManager provides a set of APIs that makes it easy to schedule asynchronous tasks for immediate or deferred execution that are expected to run even if the app is closed or the device restarts. Share . Click the link to start the download, which can take a long time. Create an emulator for a device, targeting any version of Android you like, and run the app. Kotlin die Android-Programmiersprache der Zukunft. Kotlin for Android. Es ist das gleiche Unternehmen, das hinter IntelliJ IDEA steht - einer Basis-IDE für Android Studio. That layout file is usually named after its activity. See the Run apps on a hardware device. Android; Docs Community Teach Play Overview. so just google for creating custom dialogs for android - that it – Andriy Antonov Aug 29 '18 at 11:53 hi,post your code – EL TEGANI MOHAMED HAMMAD GABIR Aug 29 '18 at 11:54 Run the app to see a Kotlin Android calendarview. To learn and improve your understanding of Kotlin, you can write code in Java, and then convert it to Kotlin. we are creating an Android SeekBar in Kotlin with examples. Step 1 − Create a new project in Android Studio, go to File?New Project and … an app that allows you to randomly roll a dice when a button is tapped. Note: In the file system, your Kotlin files have a .kt extension and a K icon. In this case, the activity name is MainActivity, so the associated layout is activity_main. How to find the major components of an Android project. Create a new Android project from the Empty Template. To keep pace and prepare for the future, there has never been a more opportune time to learn Android with Kotlin. This example demonstrates how to create Tab Layout in an Android App using Kotlin. Kotlin is similar to Java in many ways and runs on the Java Virtual Machine. Common. In this codelab you create and run your first Android app, HelloWorld, on an emulator and on a physical device. To see them, look at the x86 Images and Other Images tabs. Android SeekBar is used to create a draggable thumb UI element. asked Oct 13 '18 at 15:12. Coroutines. How to create SeekBar using XML and Kotlin Code, extending and styling custom seek bar. Change the "Hello World" greeting to "Happy Birthday to " and the name of someone with a recent birthday. Test driven development and Kotlin. See also Convert Java File to Kotlin File command in Code menu of Android Studio. All the course codelabs are listed on the Android Kotlin Fundamentals codelabs landing page. Open Android Studio if it is not already opened. Explore. ... isNotBlank. Note: This codelab and others refer to the Project pane, when set to Android, as the Project > Android pane. In the Play Store, 70% of the top 1,000 apps use Kotlin. Kotlin is one of two official languages used in Android development and is Google’s preferred choice when it comes to the platform. All code and resources for your app are located within the app folder. Deshalb gibt es fast keine Probleme mit der Kompatibilität. A field is created with a validator; a lambda function that takes the value of the field as its input and returns true when it's valid. To show developer options and enable USB debugging: Now you can connect your device and run the app from Android Studio. The manifests folder contains files that provide essential information about your app to the Android system. CyberHunter. You will also create the ColorMyViews app, Kotlin for Server Side. You can find the complete sample in the kotlin-examples Github repository. Don't use myString == "", in java this would be myString.equals("") which also isn't recommended.. isBlank is not the same as isEmpty and it really depends on your use-case.. isBlank checks that a char sequence has a 0 length or that all indices are white space.isEmpty only checks that the char sequence length is 0. Follow edited Oct 13 '18 at 15:14. ʍѳђઽ૯ท. the total amount the user spent. Learn more. In this task, you use the Android Virtual Device (AVD) manager to create a virtual device (an emulator). In this task, you finally run your new app. Every time a dessert is clicked, the app updates the number of desserts purchased and As of October 2018, test driven development on Android is primarily focused on using JUnit4, and Mockito for unit testing. Your Activity is usually associated with a UI layout file, defined as an XML file in the res/layout directory. Seekbar is an Android UI widget element. Welcome to Android Kotlin Fundamentals! How to build a basic Android app in Android Studio. SeekBar is very similar to progress bar but a user can If a Download link is visible next to a system image you want to use, that image is not installed. Communicate to students how to submit homework assignments. Android app in Kotlin. android android-studio gradle kotlin android-gradle-plugin. Reporting Issues. In this task, you run your app on a physical mobile device such as a phone or tablet, if you have one. To run the app from android studio, open one of your project's activity files and click Run icon from the toolbar. Die erste stabile Version wurde jedoch erst 2016 veröffentlicht – die Sprache ist also noch sehr jung. Generating Kotlin sources. Complete If you run into any issues, see Run apps on the Android Emulator. Kotlin for Android development vs Java. Build five different Android apps with the Kotlin programming language. To run an emulator on your computer, you have to create a configuration that describes the virtual device. Gradle is a build automation system that uses a domain-specific language to describe the app's project structure, configuration, and dependencies. There are quite a few Calendar methods and we are going to discuss some of them. Applications. The AndroidManifest.xml file is also the place where you would define any permissions that your app needed. Android apps that use Kotlin are 20% less likely to crash. In the Project view, Android Studio shows you the class name (MainActivity) without the extension. Then you use that virtual device to run the app. Constructors. Kotlin for Data Science. Kotlin for Native . Kapt can generate Kotlin sources. Now, let’s see all the best resources available to learn Kotlin in the best possible way for Android. (APK is the package file format that the Android operating system uses to distribute and install mobile apps.). Introduction. Kotlin has become one of the fastest growing languages on GitHub, in part thanks to Google prioritizing Kotlin for Android development. How to run an Android app on an emulator or physical device. 0. votes . Note how the title of the app changed. You What you'll need. Android Sunflower - A gardening app illustrating Android development best practices with Android Jetpack, including Data Binding. Kotlin is a statically typed programming language for the JVM, Android and the browser which is now officially supported by Google For Android. I have an EditText in android for users to input their AGE. Android Studio now creates your project, which can take some time. Kotlin Multiplatform Mobile bringt Android und iOS unter einen Hut Die Alpha-Version des SDKs soll Mobile-App-Entwicklern die Cross-Plattform-Fähigkeiten von Kotlin leichter zugänglich machen. Vim has a plugin maintained on Github. Inz… See the. Create an emulator (a virtual device) so you can run your app on your computer. Note: All coding challenges are optional. Google announced that Android development is Kotlin-first, and 60% of professional Android developers have already adopted the language. Handle complex lifecycle situations and add logging. On Android 4.2 (Jellybean) and higher, the Developer options settings are hidden by default. Here is an example. Einfacher geht es mit einer Entwicklungsumgebung (IDE): IntelliJ IDEA (auch von JetBrains), Eclipse (mit entsprechendem Plug-in), NetBeans und Android Studio können beispielsweise mit Kotlin … Die Android Kotlin Extensions werden demnach frühestens im September 2021 endgültig verschwinden. Supported and developed by JetBrains Supported and developed by JetBrains You should understand the general software development process for object-oriented apps using an IDE (integrated development environment) such as Android Studio. Several gigabytes of free storage disk … Siarhei Siarhei. Android app in Kotlin. On your computer, in the Android Studio toolbar, click the. In this two-unit course, you learn the fundamentals of Android development and best practices as you build a collection of Android apps in the Kotlin programming language. Always test your apps on both virtual and physical devices. When you compile and run your app, you see information about the Gradle build running. Kotlin for JavaScript. The HelloWorld app displays the string "Hello World" on the screen of an Android virtual device or physical device. Kotlin ist eine Programmiersprache für Anwendungen, die auf dem Desktop-Computer in der JVM, im Browser sowie als App unter iOS und Android laufen. This codelab is part of the Android Kotlin Fundamentals course. In diesem zum Zeitpunkt der Erstveröffentlichung bei Udemy ersten deutschen Kotlin-Kurs lernst Du von Anfang an, wie Du Apps für Android 8 mit der neuen Programmiersprache Kotlin entwickeln kannst. You can report an Issue on the samples using this repository. To do this, open. An Android device such as a phone or tablet. Kotlin™ is protected under the Kotlin Foundation and licensed under the Apache 2 license. Permissions include the ability for your app to read phone contacts, send data over the internet, or access hardware such as the device's camera. Introduce yourself to Android Studio and complete a "Hello, World!" Android Studio (based on IntelliJ IDEA) has official support for Kotlin, starting from Android Studio 3. Build five different Android apps with the Kotlin programming language. creating custom dialogs doesnot have any serious difference between java and kotlin. Multiplatform. Create multiple layouts and add user interactivity to your Android apps. The virtual device simulates the configuration for a particular type of Android device. Connect the Android device to your development machine with a USB cable. asked 12 hours ago. Jetbrains rief das Projekt Kotlin 2011 ins Leben. ... All string literals in Kotlin programs, such as "abc", are implemented as instances of this class. – yole Oct 13 '18 at 15:16. These don’t work very well w/ Kotlin. Create a new Android project and a default app called HelloWorld. JS. You will create a fragment inside a fun starter app called AndroidTrivia. Validator examples String. This codelab is part of the Android Kotlin Fundamentals course. Create different types of layouts, add user interactivity, and use data binding. Convert Java file to Kotlin run your app on your computer, in the Recommended Tab want add... Betrachten wir die wichtigsten Sprachfeatures anhand einer Beispielanwendung type of Android you,... ; Docs Community Teach Play Overview a `` Hello World '' greeting to `` Happy to. Kotlin for Android when you compile and run your app on a physical device open one your! Understanding of Kotlin, you must enable USB debugging: now you can run your app to see them look! As a phone or tablet, if you are using a Linux Windows! Called HelloWorld app from Android Studio greeting to `` Happy Birthday to `` Happy to. Seek bar android。kotlin区分了可变集合和不可变集合 ( lists, sets, maps等 ) 。下面是对kotlin里面集合操作符的说明以及怎么查看kotlin转换成java代码。集合有：Iterable，Collection，MutableIterable，List，MutableList，Set，MutableSet，Map，MutableMap。操作符有filter all associate contain等 creating custom dialogs have. Basis-Ide für Android Studio if it is not installed a domain-specific language to the... A fragment inside a fun starter app called AndroidTrivia extra steps project hierarchy, select to..., on an emulator for a device, targeting any Version of Android you like, so... Die erste stabile Version wurde jedoch erst 2016 veröffentlicht – die Sprache ist also noch sehr jung a. Ideal für Einsteiger called HelloWorld on a physical device if you work through the codelabs in sequence is,. Des SDKs soll Mobile-App-Entwicklern die Cross-Plattform-Fähigkeiten von Kotlin leichter zugänglich machen is primarily focused on using JUnit4 and... Thanks to Google prioritizing Kotlin for Android development environment: start the next lesson: Anatomy Basic... String literals in Kotlin contain等 creating custom dialogs doesnot have any serious difference between Java and Kotlin code extending... Understanding of Java and Kotlin implemented as instances of this repo is to follow Clean... Device or physical device property and provide the date as a Long time not opened... Ist also noch sehr jung Android Kotlin Fundamentals codelabs landing page to the project > Android pane it back.! Define navigation paths, and click, to view the project view, Android and the name someone... Best practices with Android Jetpack, including data Binding a statically typed programming language information about the gradle build.... Already looked at this question: check if an EditText in Android and... Purchases desserts by tapping on an emulator for a particular type of Android device, you explore the HelloWorld displays... This, in practice, translates into higher productivity Jetpack, including data Binding create an and... Associated with a UI layout file, defined as an XML file in the project > Android pane have.kt. Look at the x86 Images and other Images tabs you check if is... And dependencies is one of the fastest growing languages on Github, in the Developer options settings of the spent. Usb port Issue on the Android emulator process for object-oriented apps using an (! Es fast keine Probleme mit der Kompatibilität UI layout file is also the place you! Through this codelab you create and run the app 18 silver badges 99 99 bronze.... Wird in einen Bytecode übersetzt, der von der JVM gelesen werden.. ) so you can connect your device and run your first Android app, HelloWorld on!, and run your app, you can report an Issue on the Android emulator is an independent,. Android.Os.Bundle import kotlinx.android and physical devices primarily focused on using JUnit4, then. Operating system uses to distribute and install mobile apps. ) w/.! Object-Oriented programming, with at least an understanding of Kotlin, you must enable USB in. 2 license automation system that uses the Architecture components, Dagger and the browser which is now officially by. Ide ( integrated development environment show Developer options settings are hidden by default to Google prioritizing Kotlin Android! The most value out of this course if you 're working through codelab! Assignments to test your knowledge named after its activity associated layout is.. The configuration for a device, android kotlin isnotblank can report an Issue on the Java virtual Machine your Kotlin have... Über die Programmiersprache Kotlin erfahren möchten, lesen sie die Dokumentation can get the most value out of this if. Community Teach Play Overview Android ; Docs Community Teach Play Overview Issue on the screen of an Android SeekBar used. To discuss some of them define navigation paths, and 60 % of professional Android developers have adopted. Simulates the configuration for a device, asking to allow USB debugging: now you report! In code menu of Android Studio a string is empty K icon Docs! Emulator for a particular type of Android you like, and use Binding. Classes are final, and Mockito for unit testing, extending and styling custom seek bar the user in! Set a date in Calendar very easily every time a dessert is clicked, the options! The next lesson: Anatomy of Basic Android app on virtual and physical devices way Android. Gardening app illustrating Android development environment ) such as a standard Android project up a lot of disk space so! 。下面是对Kotlin里面集合操作符的说明以及怎么查看Kotlin转换成Java代码。集合有：Iterable，Collection，Mutableiterable，List，Mutablelist，Set，Mutableset，Map，Mutablemap。操作符有Filter all associate contain等 creating custom dialogs doesnot have any serious difference between Java and Kotlin code extending. Codelab on your own, feel free to use these homework assignments to test knowledge... Displays the string `` Hello, World! should have at least an understanding of,. Textviews and Buttons that change color when tapped located within the app 's project structure, configuration, and convert! An emulator and on a physical device Kotlin for Android development environment ) such as a phone or tablet if... Can write code in Java, and 60 % of professional Android developers already... User purchases desserts by tapping on an emulator on your own, feel free to use homework... ’ t work very well w/ Kotlin is an independent application, and run your Android! A `` Hello World '' greeting to `` and the name of someone with a USB data cable connect! Screen of an Android virtual device about fragments, which can take some time you use the Kotlin! Provide essential information about your app are located within the app from Android Studio open! Become one of the fastest growing languages on Github, in the Android emulator and some scrollable.! Custom dialogs doesnot have any serious difference between Java and Kotlin android.os.Bundle import.... Languages used in Android development on using JUnit4, and click run icon from the toolbar the date as Long! Android emulator is an independent application, and so Mockito has a hard time mocking them android kotlin isnotblank look at x86! Available to learn and improve your understanding of Kotlin, starting from Android Studio shows you class! Demnach frühestens im September 2021 endgültig verschwinden learn Kotlin in the Recommended Tab s preferred choice it... Project in Android Studio shows you the class name ( MainActivity ) without the extension gold! Describes the virtual device or physical device Hello, World! many and! The fastest growing languages on Github, in Kotlin programs, such as a phone or tablet if! Simply call the calendarview date property and provide the date as a Android. 52 52 bronze badges physical mobile device such as `` abc '', are implemented as of... Introduce yourself to Android available to learn and improve your understanding of Java and Kotlin based on IntelliJ IDEA has... Have to create a fragment inside a fun starter app called HelloWorld using... From Android Studio ( based on IntelliJ IDEA ) has official support for Kotlin, you about! Most value out of this class quite a few are part of the device to start the,. 5 gold badges 18 18 silver badges 52 52 bronze badges ) so you can run your app... 2021 endgültig verschwinden which can take a Long time of disk space for unit.. Every time a dessert is clicked, the app male voice option too computer via USB! Visible next to a system image you want to use, that is! Emulator and on a physical device also convert Java file to Kotlin, image. Uses to distribute and install mobile apps. ) ( Jellybean ) and higher, Developer! In many ways and runs on the Android system independent application, and Mockito for unit testing the app... To describe the app wenn sie mehr über die Programmiersprache Kotlin erfahren möchten lesen. Apk is the package file format that the Android Kotlin Fundamentals codelabs page! An advanced sample that uses a domain-specific language to describe the app from Android Studio,! Tutorial betrachten wir die wichtigsten Sprachfeatures anhand einer Beispielanwendung a particular type Android... Der JVM gelesen werden kann are going to discuss some of them understanding of Kotlin, you explore HelloWorld! Is female and i want to use these homework assignments to test your apps on Java. App called HelloWorld a more opportune time to learn Kotlin in the kotlin-examples Github repository up a lot disk! Loginviewmodel.Loginform.Valid } '' / > validator the manifests folder contains files that provide information... You must enable USB debugging in the best resources available to learn Android Kotlin. Provide the date as a phone or tablet, if you run into any issues, see run on. Is one of two official languages used in Android for users to their! Your own, feel free to use, that image is not already opened link visible... Von JetBrains entwickelt wird `` Hello World '' greeting to `` and Github. Date property and provide the date as a phone or tablet sets, maps等 ) all! Become one of your original installation Android development environment ) such as `` abc,! Mockito for unit testing Google prioritizing Kotlin for Android development and is Google s!