Android development tutorials. Bigger content articles that aim to help one achieve or learn something in a guided/step by step pace.
On Android an Entry or EditText as it is called in Android Native, has by default a bottom border line when you tap inside the field. On iOS this line doesn’t exist, so if you want to have the same design on both platforms, you will have to create a custom render for iOS and […]
In this article I would like to emphasise over a few options that we have when working with data structure and more precisely with collections in a mutable and immutable fashion. So let’s start with a few of them and see their mutability state. But first, what makes a list mutable or immutable? Immutable Collections
I’ve stumbled across a lot of logs noise in Android Studio throughout the time and it can be a pain when you need to debug a crash or just read some important logs of your app when your device/emulator prints lots of logs. Those logs are helpful for some cases but might not be for
In this tutorial I will create a simple Sectioned RecyclerView that will show 2 sections and a few items in each section and how to move an item from one section to another. Note: For RecyclerView I used AndroidX imports and not android.support.v7.widget.RecyclerView Setup We need to import the recycler view from AndroidX. The build.gradle
We all will need at some point to show an activity indicator when our app has to perform lenghty data processing operations or when we have to wait for our app to load content. In Xamarin Forms we can use in a xaml file this property called ActivityIndicator. Below is the result of the above
In your application you might need to create a Circle image with a text inside it or just a simple circle that needs different colors for status for example. In this case we can use a Frame and add CornerRadius property like this: As you can see, there are more properties added like HasShadow or
Create a RecyclerView in Android with Kotlin – A Step-by-Step Guide In today’s tutorial we’ll learn how to create a RecyclerView in Kotlin for Android with items that are clickable. This approach, distinct from the traditional ListView, offers a more dynamic and flexible way to display a scrollable list. Read on to discover how to
In this post we will create a ListView with ViewHolder adapter but we will write the code in Kotlin. For creating xml files for ListView and list items, follow the steps from this post. Next, you have to create a new Kotlin class for the adapter. Name the new created file MyCustomAdapter MyCustomAdapter.kt import android.content.Context import
Control flow: for, while, if, when This post is for beginners who want to start learning Kotlin language and already know Java. We will show simple examples of for, while, if, when in both languages, in parallel, for an easier understanding. We will use Log.e in order to print string messages, as from our point of view,
In order to display leaderboards from your game you will have to set up your project and to be signed in. Below you will learn how to do this. Project Setup Download the Android samples from https://github.com/playgameservices/android-basic-samples Import BaseGameUtils into your project as module Go to the directory where you downloaded android-basic-samples and select libraries -> BaseGameUtils If you get
In Android, if you need to swipe from right to left or vice-versa in order to see different data, you can use a ViewPager. In order to use it, you have to implement a PagerAdapter which will generate the pages that the view shows. ViewPager’s adapters We can use one of the 3 adapters provided:
After trying some libraries in order to make a cube animation for my viewPager, I realized that is pretty easy to do this. Android provides an interface called ViewPager.PageTransformer and you just have to implement its method transformPage(). Below is the code, step by step. activity_main.xml <?xml version=”1.0″ encoding=”utf-8″?> <LinearLayout xmlns:android=”http://schemas.android.com/apk/res/android” xmlns:tools=”http://schemas.android.com/tools” android:layout_width=”match_parent” android:layout_height=”match_parent” tools:context=”ro.helpproject.funcode.help.MainActivity”>
In this post I will talk about 5 cool things that functions can do in Kotlin, better than methods in Java. 1. Forget about overloaded methods In Java, when you need the same method to have 1 parameter in one case and more parameters in another case, you would have to overload the method.
Note! This is a post for beginners in Kotlin language. What are lambdas and anonymous functions? In order to define them let’s see what is a function literal. Function literal Function literal is a function that was not declared, but was passed as an expression. val sum = { a: Int, b: Int -> a + b
