How To Make An Android App With Intellij

Date:

Test The Application On A Real Device

IntelliJ 13 Android SDK Simple Android App Hello World Tutorial

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:

  • Read Also: Android And Iphone Games To Play With Friends

    Guide To Install And Setup Intellij Idea For Android App Development

  • Difficulty Level :Easy
  • 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

    Intellij Idea Tutorial For Beginners Pdf w3schools android ...
  • 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

  • Also Check: How To Remote Control Pc From Android

    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

    Active Oldest Score

    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:

  • Download and install Android SDK
  • After android SD finishes installing, open SDK Manager under Android SDK Tools
  • Choose everything and mark Accept All and install.
  • Download and install IntelliJ IDEA
  • Wait for all downloads and installations and stuff to finish.
  • New Project:

  • Create a new project
  • Enter the name, choose Android type.
  • There’s a step missing in the tutorial, when you are asked to choose the JDK you need to choose the Java JDK you’ve installed earlier. Should be under C:\Program Files\Java\jdk
  • Choose a New platform , the SDK platform is the android platform at C:\Program Files\Android\android-sdk-windows.
  • Choose the android version.
  • Now you can write your program.
  • Compiling:

  • Near the Run button you need to select the drop-down-list, choose Edit Configurations
  • In the Prefer Android Virtual device select the button
  • Double click the new device to choose it.
  • Press OK.
  • 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.

  • Run Terminal
  • Read Also: How To Video Chat From Android To Iphone

    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

    Creating new PhoneGap App with IntelliJ Tutorial
  • In fragment_first.xml, look at the Component Tree. If it’s not showing, switch the mode to Design instead of Split or Code.
  • 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.

    Read Also: Microsoft Edge For Android Phone

    Add A Textview For The Random Number

  • Open fragment_second.xml and switch to Design View if needed. Notice that it has a ConstraintLayout that contains a TextView and a Button.
  • Remove the chain constraints between the TextView and the Button.
  • Add another TextView from the palette and drop it near the middle of the screen. This TextView will be used to display a random number between 0 and the current count from the first Fragment.
  • Set the id to
  • Constrain the top edge of the new TextView to the bottom of the first TextView, the left edge to the left of the screen, and the right edge to the right of the screen, and the bottom to the top of the Previous button.
  • Set both width and height to wrap_content.
  • Set the textColor to , set the textSize to 72sp, and the textStyle to bold.
  • Set the text to “R”. This text is just a placeholder until the random number is generated.
  • Set the layout_constraintVertical_bias to 0.45.
  • 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.

    Read Also: Quick Cash Apps For Android

    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.

  • In the fragment_first.xml layout file, notice the id for the TextView:
  • In FirstFragment.java, add a click listener for the count_button below the other click listeners in onViewCreated. Because it has a little more work to do, have it call a new method, countMe.
  • view.findViewById.setOnClickListener }) 
  • In the FirstFragment class, add the method countMe that takes a single View argument. This method will be invoked when the Count button is clicked and the click listener called.
  • private void countMe 
  • Get the value of the showCountTextView. You will define that in the next step.
  •    ...    // Get the value of the text view    String countString = showCountTextView.getText.toString 
  • Convert the value to a number, and increment it.
  •    ...    // Convert value to a number and increment it    Integer count = Integer.parseInt     count++ 
  • Display the new value in the TextView by programmatically setting the text property of the TextView.
  •    ...   // Display the new value in the text view.   showCountTextView.setText) 

    Here is the whole method:

    private void countMe 

    Set The Target Device

    Howto Develop a Hello World Android Application using ...

    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.

    Don’t Miss: Is A Google Pixel Phone An Android

    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.

    Recommended Reading: Best Video Creator App For Android

    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

    Getting started with Android and Intellij IDEA

    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.

    You May Like: Mobile Forensic Tools For Android

    Add A Constraint To The New Button

    You will now constrain the top of the button to the bottom of the TextView.

  • Move the cursor over the circle at the top of the Button.
  • 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.

  • Take a look at the Constraint Widget in the Layout pane of the Attributes panel. It shows some constraints for the Button, including Top -> BottomOf textView.
  • Take a look at the XML code for the button. It now includes the attribute that constrains the top of the button to the bottom of the TextView.
  • You may see a warning, “Not Horizontally Constrained“. To fix this, add a constraint from the left side of the button to the left side of the screen.
  • Also add a constraint to constrain the bottom of the button to the bottom of the screen.
  • Before adding another button, relabel this button so things are a little clearer about which button is which.

  • Look at the Attributes panel on the right, and notice the id field.
  • Change the id from button to toast_button.
  • 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.

    You May Like: How To Print Photos From An Android Phone

    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

    How To Setup Intellij Idea For Java

    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

    You May Like: Gps Antenna For Android Tablet

    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

    • In fragment_second.xml, select textview_second, which currently has the text “Hello second fragment. Arg: %1$s” in the hello_second_fragment string resource.
    • If android:text isn’t set, set it to the hello_second_fragment string resource.
    • Change the id to textview_header in the Attributes panel.
    • Set the width to match_constraint, but set the height to wrap_content, so the height will change as needed to match the height of the content.
    • Set top, left and right margins to 24dp. Left and right margins may also be referred to as “start” and “end” to support localization for right to left languages.
    • Remove any bottom constraint.
    • In strings.xml, change hello_second_fragment to “Here is a random number between 0 and %d.”
    • Use Refactor > Rename… to change the name of hello_second_fragment to random_heading.
    • Here is the XML code for the TextView that displays the heading:

      Don’t Miss: The Best Call Recorder For Android

      Share post:

      Popular

      More like this
      Related

      Invaders From The Planet Moolah Android App

      Midas Golden...

      How To Create Resume On Android Phone

      Build Free...

      Remote Control Android Phone Over Wifi

      Best Remote...

      How To Develop An App For Android Free

      Android App...