![]() The purpose of this tutorial is not to explain about the Android App code but to show you the overall procedure of create an Anroid App. If you don't have much experience in writing program, just copy and past this code. If you are already familiar with Java programming (or any other programming language), you would understand these without much explanation. I wouldn't explain much details about these code. ![]() The lines highlighted in red is the code that I wrote in this example. In most case, when you create a user interface page (this is called 'Activity' in Android App), Android Studio automatically create an xxxx.xml file and xxxx.java file. In most case, you would write the code into xxxxActivity.java file. The programming part (i.e, the code I wrote) is simple as shown below. The properties for the graphical components (user interface parts) are mostly stored in the activity_xxxx.xml file as shown below. The ID and the initial value that I assigned for the button is as shown below.Īctually all the settings you have made from the GUI shown above, it is stored as a kind of code and will be built into the executables. The ID and the initial value that I assigned for the text box is as shown below. ![]() However simple program you build, make it practice to assign some meaningful name (ID) to all the components, because you need to know these ID when you writing the code part to manipulate those components. Now assign a some name (ID) that you can easily recognize later. ![]() I've just added a button to the first App interface). Like any other Hello World program, this is a super simple progame that are made up of simple components a Text Edit and a Button as shown below (As you might have recognized, this is just a simple extention to the First App. Now let's get into the Hello World App creation. Then, you create a new interface for the app that takes user input and switches to a new screen in the app to display it. First, you learn how to create a 'Hello, World' project with Android Studio and run it. There are a couple of pre-requisite stages you have to go through first before you are trying the 'Hello World'. This section describes how to build a simple Android app. 'Hello Word' in Android Programming is a little bit different from the ones in learning other programs like C, C++ etc. You may download the latest version of Android Studio from. If you are completely new to Android programming, I strongly recommend you to go through the download, installation and the first App page first even if you are not really trying programming. In this tutorial, we shall learn to create an Android Application with Kotlin language.
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