BaseAdapter – Our json data we download is a complex data.We use a widgets to successful render that complex data. This is because the JSON data we download has to be rendered to the user. Not only will we use retrofit classes but we’ll also have widgets and views. Response – Response the response we receive.Then that list can then be bound to the gridview. Then we can parse that response or map to a list of our data objects. If it’s a success callback then we get a response. This can be a success callback or a failure callback. Callback – Represents the Callback that we receive.In this case we will be making a HTTP GET request. Call – This is an interface that represents a HTTP call we make.These are for the several API’s we’ll use.Īnd these include first the Retrofit2 classes like the: We will start by adding several import statements. MainActivity.java Retrofit Classes We use Implementation ':constraint-layout:1.0.2' Implementation fileTree(dir: 'libs', include: ) You add these in your app level adle file. Picasso – To load our images from online.Gson Converter – To map our JSON data to java classes.CardView – to give us the CardView class which will be the root element of our GridView.ConstraintLayout – Our constraint layout.AppCompat – a support library giving us access to the AppCompatActivity which we’ll use as our MainActivity‘s base class.We use Retrofit, a modern and fast http client for android.Īndroid Retrofit GridView JSON adle The data will comprise images and text and we render them in custom cardviews. In this tutorial we want to see how to download JSON data from online, then parse that data using Google GSON and then bind the data to a custom GridView. Example 1: Android Retrofit – JSON GridView Images and TextĪndroid Retrofit JSON GridView Example and Tutorial.
We will be using Retrofit as our HTTP Client. In this tutorial we will learn how to download JSON data from online and bind to adapterviews like gridview, listview and recyclerview.
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