Test The Application On A Real Device
To test the application on a real device you just need to select the appropriate build configuration and make sure the device is connected to the computer through a USB cable. If there’s enough storage on the device, the application installs successfully.
A possible reason for the install to fail is that the device is not configured to install applications outside one of the Android app stores. Enabling this capability on the specific device is required to test applications.
Tutorial: Create Your First Kotlin Application
In this tutorial, you will learn how to:
Create a Kotlin project.
Write code using the basic coding assistance features.
Run your code from IntelliJ IDEA.
Build and package the application.
Run the packaged application.
You can choose to build your app with one of the four supported build tools.
The instructions are provided for Gradle and Kotlin as DSL. To learn how to accomplish the same using other build tools, use the Build tool switcher at the top of the page.
The instructions are provided for Gradle and Groovy as DSL. To learn how to accomplish the same using other build tools, use the Build tool switcher at the top of the page.
The instructions are provided for Maven. To learn how to accomplish the same using other build tools, use the Build tool switcher at the top of the page.
The instructions are provided for IntelliJ IDEA build tool. To learn how to accomplish the same using other build tools, use the Build tool switcher at the top of the page.
Count The Letters In Your Name
Open the file main.kt in src/nativeMain/kotlin.
The src directory contains the Kotlin source files and resources. The file main.kt includes sample code that prints “Hello, Kotlin/Native!” using the function.
Add code to read the input. Use the readln function to read the input value and assign it to the name variable:
The readln function is available since Kotlin 1.6.0. Ensure that you have installed the latest version of the Kotlin plugin.
fun main
Eliminate the whitespaces and count the letters:
Use the replace function to remove the empty spaces in the name.
Use the scope function let to run the function within the object context.
Use a string template to insert your name length into the string by adding a dollar sign $ and enclosing it in curly braces â $. it is the default name of a lambda parameter.
Save the changes and run the build command:
build/bin/native/debugExecutable/< your_app_name> .kexe
Enter your name and enjoy the result:
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Guide To Install And Setup Intellij Idea For Android App Development
To start developing Android applications, one has to set up a proper development environment. It facilitates developers to use the tools needed in creating an app and ensure that all operations/processes carried out in a smooth manner. An IDE is a complete application suite that provides services like writing and editing of source code, building executable files, and debugging. IntelliJ IDEA is one of the popular IDE that is used for developing android applications. This article covers the step-by-step approach to install and setup the IntelliJ IDEA IDE on the computer system in order to start the android app development journey.
Create A New Kotlin/native Project In Intellij Idea
In IntelliJ IDEA, select File | New | Project.
In the panel on the left, select Kotlin.
Enter a project name, select Native Application as the project template, and click Next.
Kotlin/Native doesn’t support Maven and IntelliJ IDEA native builder.
Accept the default configuration on the next screen and click Finish. Your project will open.
Open the build.gradle.kts file, the build script that contains the project settings. To create Kotlin/Native applications, you need the Kotlin Multiplatform Gradle plugin installed. Ensure that you use the latest version of the plugin:
plugins
Read more about these settings in the Multiplatform Gradle DSL reference.
Read more about the Gradle build system in the documentation.
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How To Run Mobile Testing Using Appium In Intellij
Appium is an open-source, cross platform tool for automated testing of native, mobile web, and hybrid applications on iOS, Android, and Windows desktop platform.
Supports automation using multiple programming languages like Java, PHP, Perl, Python, etc. So, users can use any programming language they are comfortable with and write automated scripts.
How Do I Set Up Intellij Idea For Android Applications
I’ve spent a day on trying to put all the pieces together, been in hundreds of sites and tutorials, but they all skip trivial steps.
So here’s the full guide:
New Project:
Compiling:
The 5th step in “New Project’ has apparently changed slightly since.
Where it says android sdk then has the drop down menu that says none, there is no longer a ‘new’ button.
Once I have followed all these steps, I start to receive error messages in all android classes calls like:
I revolved that including android.jar in the SDKs Platform Settings:
You have to download these.
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Configuring Intellij Platform Projects For Android Studio Plugin Development
To create a new Android Studio plugin project, follow the tutorial on the Getting Started with Gradle page. The tutorial produces a skeleton project suitable to use as a starting point for an Android Studio plugin. On the New Project Configuration Screen of the New Project Wizard tutorial, choose Gradle from the product category pane as described in the tutorial, notAndroid. Some minor modifications to the skeleton project are needed, as discussed below.
Explore And Resize The Component Tree
This panel shows the view hierarchy in your layout, that is, how the views are arranged in relation to each other. 2. If necessary, resize the Component Tree so you can read at least part of the strings. 3. Click the Hide icon at the top right of the Component Tree.
The Component Tree closes. 4. Bring back the Component Tree by clicking the vertical label Component Tree on the left.
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Add A Textview For The Random Number
This TextView is constrained on all edges, so it’s better to use a vertical bias than margins to adjust the vertical position, to help the layout look good on different screen sizes and orientations. 10. If you get a warning “Not Horizontally Constrained,” add a constraint from the start of the button to the left side of the screen and the end of the button to the right side of the screen.
Here is the XML code for the TextView that displays the random number:
Run Your App On A Device
What you need:
- An Android device such as a phone or tablet.
- A data cable to connect your Android device to your computer via the USB port.
- If you are using a Linux or Windows OS, you may need to perform additional steps to run your app on a hardware device. Check the Run Apps on a Hardware Device documentation. On Windows, you may need to install the appropriate USB driver for your device. See OEM USB Drivers.
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Make The Count Button Update The Number On The Screen
The method that shows the toast is very simple it does not interact with any other views in the layout. In the next step, you add behavior to your layout to find and update other views.
Update the Count button so that when it is pressed, the number on the screen increases by 1.
view.findViewById.setOnClickListener })
private void countMe
... // Get the value of the text view String countString = showCountTextView.getText.toString
... // Convert value to a number and increment it Integer count = Integer.parseInt count++
... // Display the new value in the text view. showCountTextView.setText)
Here is the whole method:
private void countMe
Set The Target Device
The dialog box also gives you a chance to define how the sample application should be run by IntelliJ IDEA. There are three basic run configurations:
- Show device chooser dialog indicates that IntelliJ IDEA will ask you to choose between the emulator or a device connected via USB every time you launch the application from the IDE.
- USB device indicates that IntelliJ IDEA will automatically try to deploy the application to any compatible device available through a USB port. This is the option you use if you want to test on a physical device.
- Emulator indicates that IntelliJ IDEA will deploy the application to the configured emulator. Note that you also need to set up an Android Virtual Device to run applications in the emulator. We’ll take care of this step in a few moments.
When ready, click Finish to have the project created.
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Add Image To The Ui Layout
Now let’s add a droid image to our layout.
In the Android project view, expand the app/res folder and drag the image you want to use into the drawable folder. For this tutorial, we’ve downloaded a Hello Droid image from the Internet and saved it with the dimensions 50×50 px.
Return to the activity_main.xml file opened in the Designer pane, from the Palette choose the ImageView element, and drag it to the canvas to the position where you want the image to appear.
In the Pick a Resource dialog that opens, choose the resource file you’ve added and click OK:
Next, we need to modify the default id of the imageView element to be able to reference it later.
Select it in the Component Tree and in the Attributes pane on the right, enter the new identifier in the id field: droidImage. Press Enter in the dialog that opens, confirm that you want to update all references to the image element id:
Task: Make Your App Interactive
You have added buttons to your app’s main screen, but currently the buttons do nothing. In this task, you will make your buttons respond when the user presses them.
First you will make the Toast button show a pop-up message called a toast. Next you will make the Count button update the number that is displayed in the TextView.
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Which Is The Correct Jdk For Intellij Idea
Select the Android SDK and make sure that the correct Java version is selected in the Java SDK field. We recommend that you use Java SE 11 or Java SE 8 for Android development in IntelliJ IDEA. If you dont have the correct JDK installed, in the Project Structure dialog, click the Add New SDK button on the toolbar and select Download JDK:
Getting Started With Kotlin On Android With Intellij Idea Eap 16
Feb 21, 2016
I recently spoke with some people in Tokyo who areusing Kotlin in a production Android app.Kotlin is less cumbersome to write than Java and is therefore easier to maintain.By using Kotlin, Lambda functions can also be used on Android.Exciting.
Android work is fascinating in theory.Working with Java is neither fun nor exciting.I really like the idea of using something less cumbersome like Kotlin for Android projects.
Kotlin is a modern language with some functional features.It was written to interoperate seamlessly with Java code.Kotlin can also be compiled to JavaScript source code.The home page describes it as astatically typed programming language for the JVM, Android and the browser.
Kotlin was primarily developed by JetBrains, the makers of IntelliJ IDEA.Android studio is essentially a customized version of IntelliJ.A lot of thought went into making sure Kotlin works well on Android.
Idiomatic Kotlin with lambda functions does increase total method count.Multidex and ProGuard can be used to get around the dex file limit of 65,536 methods.Having said that, it is generally the libraries that push Android apps over the dex limit.
The Kotlin website has a good guide on getting started with Kotlin on Android.Writing this post is largely an excuse for me to give it a shot with IntelliJ EAP instead of Android Studio.
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Add A Constraint To The New Button
You will now constrain the top of the button to the bottom of the TextView.
The Button moves up to sit just below the TextView because the top of the button is now constrained to the bottom of the TextView.
Before adding another button, relabel this button so things are a little clearer about which button is which.
Adjust The Next Button
You will adjust the button labeled Next, which Android Studio created for you when you created the project. The constraint between it and the TextView looks a little different, a wavy line instead of a jagged one, with no arrow. This indicates a chain, where the constraints link two or more objects to each other, instead of just one to another. For now, you’ll delete the chained constraints and replace them with regular constraints.
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Count The Unique Letters In Your Name
Open the file main.kt in src/nativeMain/kotlin.
Declare the new extension functioncountDistinctCharacters for String:
Convert the name to lowercase using the lowercase function.
Convert the input string to a list of characters using the toList function.
Select only the distinct characters in your name using the distinct function.
Count the distinct characters using the count function.
Use the countDistinctCharacters function to count the unique letters in your name:
fun String.countDistinctCharacters = lowercase.toList.distinct.countfun main letters”) // Print the number of unique letters. println }}
Save the changes and run the build command:
build/bin/native/debugExecutable/< your_app_name> .kexe
How To Run An Android App In Intellij Simulator
Check what the Run-tap says. It gives information about the deployment process. Lukas Knuth Mar 17 13 at 10:56 That just starts the emulator. In Build-> Edit configurations, make sure you have the chooser dialog selected then run your app. Select the emulator as the target. Simon Mar 17 13 at 10:56
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Run Code From Intellij Idea
Let’s verify that our program works as expected.
IntelliJ IDEA allows you to run applications right from the editor. You don’t need to worry about the technical aspect because IntelliJ IDEA automatically does all the necessary preparations behind the scenes.
When the program has started, the Run tool window opens, where you can review the output and interact with the program.
Update The Textview To Display The Header
Here is the XML code for the TextView that displays the heading:
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