![]() ![]() (Though I'd love to be proven wrong on this account!)Īt the same time, the apparent simplicity should not be mistaken for lack of effort on the contrary, I feel every line oozes with purpose, practicality, and to-the-point-ness, like a well sharpened knife, or a great piece of art where it's not about that you cannot add more, but that you cannot remove more. But still doable for a human being, and I guess probably significantly easier than in most modern compilers. The compiler (including the runtime library) is noticeably harder to read and understand (especially because of sparse comments and somewhat idiosyncratic naming conventions that's partly explained by it being constantly in flux). Especially the standard library is, in my opinion, stunningly easy to read, explore and understand, while at the same time being well thought through, easy to use (great and astonishingly well documented APIs), of very good performance, and with huge amounts of (also well readable!) tests. Retrofit2 requires Java 8, to include Java 8 in an Android project, update your app’s adle file to include compile options.I hold the source code of Go standard library & base distribution (i.e. To retrieve the Retrofit2 library using Gradle include the following implementation dependency inside your app’s adle file (see a complete adle file at the end of this section which covers all required dependencies). Retrofit2 is a HTTP client for Android and Java developed by Square which allows you to use a Java interface to simplify the process of integrating with a HTTP API. Each of the libraries will be retrieved into our Android project using Gradle. ![]() The 3rd party libraries we will use include Retrofit2, OkHttp3 and GSON. In this tutorial we will be making use of various 3rd party libraries to simplify the effort required to integrate our Android app with an API to make a POST request. Step 1: Obtaining the Retrofit2 Dependencies If you want to run this API make sure you have Python and PyPi installed on your local machine where you are running the Android emulator and follow the brief instructions in the Readme to retrieve the dependencies for Flask and run the API. If you are interested in the code for the API written in Python using the Flask library it is also available on GitHub – I have uploaded the code for the Android app being created in this tutorial in GitHub – įor the purposes of this tutorial I have written code for a very basic API using Python and the library Flask which is configured to respond with the same Comment sent to the API in POST request from the Android app. And a button to send the HTTP POST request containing the data about the Comment.A radio button group containing three different options for creating the HTTP POST request using Retrofit2.Three fields for capturing a Comment including a title, a body and an author.The app contains a basic form that is used to capture a comment which is like something that you might see on a social media app or a news app with articles the public can comment on.Īs you can see it contains the following: Please see a screenshot of the Android app will be creating. We will be creating a very basic Android app for this tutorial to demonstrate how to make a HTTP POST request containing a JSON body using Retrofit2. Android HTTP JSON Body Post Request in Java Using Retrofit2 Example ![]() I have also added some information to the tutorial around an alternative approach for sending data in a POST request with Retrofit2 by using URL parameters instead of a JSON body inside the request.
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