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1. Create simple android app tutorial how to#
2. Create simple android app tutorial code#
3. Create simple android app tutorial free#

Once the list is created we create the WallpaperGalleryRecyclerAdapter and pass the list of wallpapers to the custom RecyclerView adapter using the setWallpapers(List) method.

Create simple android app tutorial free#

You will see in the onCreate(…) method of the fragment class we are creating a List of Wallpaper objects using wallpaper images from the free to use stock photo website. Now we will create the fragment class that will contain the RecyclerView of the wallpapers.

Create simple android app tutorial code#

See the code sample for the WallpaperGalleryRecyclerAdapter class below. Next we will create the RecyclerView adapter class for showing the wallpapers in the RecyclerView.

See the code sample for the WallpaperViewHolder class below.

Next we will create an interface that will contain methods that will be invoked when a wallpaper image is selected within any of the cards in the RecyclerView. See the code sample for the Wallpaper class below. We will first create a model class for the Wallpaper that will contain a String for the URI of the image on the Internet and a String for the title of the wallpaper. This RecyclerView will show a card for each wallpaper, each card will contain an image of the wallpaper (loaded using Glide) and a textual description. In this section of the tutorial we will be setting up a fragment inside an activity that will contain a RecyclerView. Step 3: Setting up RecyclerView to Display a Gallery of Wallpapers See the sample app level adle containing the dependencies for the Jetpack navigation component and Glide.

Create simple android app tutorial how to#

To learn more about the Jetpack navigation component and how to use it to move between fragments check out the post I wrote below.Īndroid Glide Tutorial with Examples in Java We will also be using the image loading library Glide to load wallpaper images from the internet. In this tutorial for building an app to set the wallpaper on the device we will be using Jetpack navigation component for navigating between fragments in our Android app. See a sample Android Manifest below requesting the INTERNET and SET_WALLPAPER permissions for use in the wallpaper Android app. To set an image as the wallpaper on the Android device we will require the SET_WALLPAPER permission to be granted in the Android manifest. We will need to request the following two Android permissions in the manifest file for our Android wallpaper app to work.Īs will be loading images for the internet to be used for selecting the wallpaper we will need to the INTERNET permission enabled. observeOn(AndroidSchedulers.mainThread())įor (CDAResource resource : result.Step 1: Requesting Permissions in the Android Manifest To fetch all entries, create a new observable that watches for changes, in this case, fetching all entries from the specified space with the all method and content type with the where method: client.observe(CDAEntry.class) To include the CDA client library, add the following lines to the adle file: dependencies Fetching all data from a space This guide uses RXAndroid in the examples, which allows you to fetch results without tying up the main Android thread. Create a new Android projectĬreate a new project in Android Studio using the 'Blank Activity' template, and name it whatever you wish. You can create an access token using the Contentful web app or the Content Management API. Authenticationįor every request, clients need to provide an API key, which is created per space and used to delimit applications and content classes. This tutorial assumes that you understand the Contentful data model. We publish client libraries for various languages to make developing applications easier. All content, both JSON and binary, is fetched from the server closest to a user's location by using our global CDN. This guide will show you how to get started using our Android client library to consume content.Ĭontentful's Content Delivery API (CDA) is a read-only API for retrieving content from Contentful.