hackscas.blogg.se - Android kotlin serialization

The following image is a screenshot of the final app, which contains a grid of images. The images are real-life photos from Mars, captured from NASA's Mars rovers. This app connects to a web service to retrieve and display Mars photos. You work with the app named Mars Photos, which shows images of the Mars surface. Use Retrofit's support for coroutines to simplify the code.Parse the JSON response from the web service into your app's list of data objects with the rialization library, and attach it to the UI state.Implement a data layer for your app using the Retrofit library.Modify a starter app to make a web service API request and handle the response.How to use the Serialization (rialization) library to parse the JSON response into a data object.

How to use the Retrofit library to connect to a REST web service on the internet and get a response.

Basic knowledge of how to add dependencies in adle.

Basic knowledge of how to use coroutines for long-running tasks.

Basic knowledge of how to use Android architecture components ViewModel.

Basic knowledge of how to create Composable functions.

You will also display an error message if the internet is slow or unavailable, which will keep the user informed about any network connectivity issues. This greatly simplifies fetching the data and also helps the app follow Android best practices, such as perform operations on a background thread. In this codelab, you will use open source and community-driven libraries to build a data layer and get data from a backend server.

Gmail, YouTube, and Google Photos are example apps that connect to the internet to display the user data. Most Android apps in the market connect to the internet to perform network operations, such as retrieving emails, messages, or other information from a backend server.