Retrofit2

The Retrofit class generates an retrofit2 of the GitHubService interface. The relative URL of the resource is specified in the annotation, retrofit2. A request URL can be updated dynamically using replacement blocks and parameters on the method. A corresponding parameter must be annotated with Path using the same string, retrofit2.

Every method of an interface represents one possible API call. The return value wraps the response in a Call object with the type of the expected result. You can use replacement blocks and query parameters to adjust the URL. With the help of the Path annotation on the method parameter, the value of that parameter is bound to the specific replacement block. Query parameters are added with the Query annotation on a method parameter. They are automatically added at the end of the URL. The Body annotation on a method parameter tells Retrofit to use the object as the request body for the call.

Retrofit2

A Retrofit 2 Converter. Factory for Kotlin serialization. Add a converter factory when building your Retrofit instance using the asConverterFactory extension function:. Response body types e. Because Kotlin serialization is so flexible in the types it supports, these converters assume that they can handle all types. If you are mixing this converter with another, you must add this instance last to allow the other converters a chance to see their types. Snapshots of the development version are available in Sonatype's snapshots repository. Skip to content. You signed in with another tab or window. Reload to refresh your session. You signed out in another tab or window. You switched accounts on another tab or window. Dismiss alert. Notifications Fork 59 Star 1k. License Apache

IOException ; import okhttp3.

All rights reserved. Skip navigation links. Uses of Package retrofit2. An invocation of a Retrofit method that sends a request to a webserver and returns a response. Adapts a Call with response type R into the type of T. Creates CallAdapter instances based on the return type of the service interface methods. Creates Converter instances based on a type and target usage.

It's time to kick off a brand-new Retrofit topic and mini series: call adapters. In this first introductory tutorial you'll learn what call adapters are and how you can utilize them in Retrofit. Basics of API Description. Creating a Sustainable Android Client. Beyond Android: Retrofit for Java Projects. How to use OkHttp 3 with Retrofit 1. Synchronous and Asynchronous Requests.

Retrofit2

Calls may be executed synchronously with execute , or asynchronously with enqueue retrofit2. In either case the call can be canceled at any time with cancel. A call that is busy writing its request or reading its response may receive a IOException ; this is working as designed. Throws: IOException - if a problem occurred talking to the server. RuntimeException - and subclasses if an unexpected error occurs creating the request or decoding the response. It is an error to execute or enqueue a call more than once.

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Test implementation Write the following test class to check the call. If no name is provided, the fields name is used. Retrofit adapts a Java interface to HTTP calls by using annotations on the declared methods to define how requests are made. Retrofit can be configured to use a specific converter. Element ; import org. The first method would be to manipulate the header for the request with the help of annotations. List ; import io. Response ; import retrofit2. See License for license information. TextView ; import android. FormUrlEncoded ; import retrofit2. With strict set to false , strict parsing is disabled. DialogInterface ; import android. Create data model Create the following two data classes which are used to store the response data from Stackoverflow.

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Converters can be added to support other types. Fortunately Retrofit gives yu the possibility to add an own typed JSONDeserializer to control the deserialization for a specific type. Contributing If you would like to contribute code you can do so through GitHub by forking the repository and sending a pull request. Field ; import retrofit2. An interceptor is used to modify each request before it is performed and alters the request header. If you need more assistance we offer Online Training and Onsite training as well as consulting. Gson : com. The Body annotation on a method parameter tells Retrofit to use the object as the request body for the call. Contributors 8. Six sibling modules adapt popular serialization libraries for your convenience. Header Manipulation You can set static headers for a method using the Headers annotation. Add a converter factory when building your Retrofit instance using the asConverterFactory extension function:. Retrofit 1. Otherwise, toString will be called on the value, and the result used. Project creation and setup Create a new Gradle project called com.