In Kotlin you may skip and not use the findViewById( ) and still be able to refer to UI components defined in XML Layout file. There is another way. You will need to do a couple of things first:  Edit your Module/ app level build.gradle file Import the data binding library into the Kotlin file (Don’t worry,…

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In this short code example below we will learn how to create ImageButton in Kotlin programmatically. A short code snippet in Kotlin below will cover: Create ImageView in a ConstraintLayout Load image from a resource Set onClickListener on ImageButton Change ImageButton image when the button is tapped For this example to work and to load an…

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In this short code example I am going to share with you how to concatenate two ArrayList in Java.  Concatenate ArrayList using addAll() function Let’s say we have these two ArrayList(s): List<String> itemsList1 = new ArrayList(Arrays.asList(“One”, “Two”)); List<String> itemsList2 = new ArrayList(Arrays.asList(“Three”, “Four”)); To concatenate the two lists together we can create a new ArrayList, and…

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In this short Kotlin code example we will learn how to create a single CardView in Kotlin programmatically. CardView is a FrameLayout with a rounded corner background and shadow. You can add multiple views into a CardView and then show them in a list one under another.  We will make a quotation card containing quote and…

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Below is a very short tutorial on how to create RecyclerView in Kotlin programmatically. RecyclerView is a flexible view for providing a limited window into a large data set and learning how to create and use it make you even better Mobile App Developer :). The Kotlin code example below will cover: Create RecyclerView Create RecyclerAdapter Create a…

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With this blog post I am going to share with you how to create a ListView in Kotlin programmatically. ListView is a very commonly used UI component and knowing how to work with it enables you build even more powerful apps. The example below will cover: Create ListView in a ConstraintLayout Populate ListView with data using…

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The category “Swift” has been updated with a few very useful links which contain many video tutorials and code examples that will help you build many features for your mobile application with Swift. User registration, sign in and sign out video tutorials The set of 15 video tutorials on how to create user registration, login and logout will…

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In this short code example in Kotlin I am going to share with you how to create an EditText programmatically and also how to: Add the created EditText in a ConstraintLayout Set hint text for the TextView Set text color Set EditText backgroundColor Layout XML file for the EditText UI component <?xml version=”1.0″ encoding=”utf-8″?> <android.support.constraint.ConstraintLayout xmlns:android=”http://schemas.android.com/apk/res/android”…

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In this very short blog post I am going to share with you how to create and add Button in Kotlin programmatically. To break it down in more details the code example below will cover: Create Button programmatically in Kotlin Handle Button onClick events Change Button background color Change Button text color Add a Button…

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In this tutorial, we will use Kotlin to make a simple Android mobile app that will be able to receive push notifications sent from Firebase. I used to call these kind of messages “push messages” but the correct term for this tutorials will probably be a Firebase Cloud Messaging or the FCM which also stands for Firebase Cloud Messaging.  I…

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