In the constructor you assign an instance of your adapter to this property (note you don’t need to use new in Kotlin) and assign two things to rv_item_list - a LayoutManager (which is used for positioning), and an Adapter (which we’ve just created). So here you’ve defined the adapter as a lateinit variable - lateinit is telling Kotlin that you want to initialize this at some stage after creation, not the default in Kotlin classes - normally you have to initialize things immediately. For example, often you’ll see curly brackets used as function parameters:īuildscript It resembles other languages you may have seen but some things look off, often because it is so concise!ĭon’t panic - because it is so extensible there are many ways to write the same code, and many shortcuts that aren’t available in other languages. Here is the complete code if you rather go straight to the end.īefore we start, let’s talk a bit about Kotlin. If you don’t have any Android experience you should be able to follow along but you might have to Google a few things here and there. It is also easy to use existing native code, static or. It is easy to include compiled Kotlin code in existing projects written in C, C++, Swift, Objective-C, and other languages. I’m going to assume you have some Java experience and have at least played around with creating an Android app. Kotlin/Native supports interoperability to use existing libraries directly from Kotlin/Native: static or dynamic C libraries. Spring Boot is a great way to create a robust REST API with a minimal amount of code. In this tutorial, you’ll use Spring Boot for the API that powers your Android (+ Kotlin) mobile app.
The best way to start is by creating a complete app yourself, which you’ll do in this tutorial. Please note that this tutorial assumes a basic familiarity with Kotlin.Kotlin was recently given official Android support status by Google, but it remains difficult to understand for many developers. Implement ChannelCreateAdapter for RecyclerView.Create ChannelListAdapter for RecyclerView.Import dependencies and add permissions.ChannelCreationActivity – A screen that allows a user to invite other users and create a channel.ChannelListActivity – A channel list to display the Group Channels that a user can join.
LoginActivity – A basic Login screen for users to log in and set their nickname.This guide focuses on the Group Channel implementation to create 1:1 private chats and private group chats. Sendbird has two channel types: Open Channels and Group Channels. In this first part, we’ll go over the initialization and login, and the display, selection, and creation of channels. After completing it, you will have created your very own chat application with Kotlin. The complete tutorial includes two parts.
This tutorial is an easy-to-follow Kotlin implementation guide to build a chat application using the Sendbird Chat SDK.
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