#USE RXJAVA WITH RETROFIT ENQUEUE HOW TO#
#USE RXJAVA WITH RETROFIT ENQUEUE CODE#

139 comments, 3 shares, Facebook Watch Videos from The Retrofit Source: We NEED. I really wanted to introduce RX into the calls but I don't have much experience with that. Please use best practices if you perform this job such as soldering iron. Override fun enqueue( callback : Callback>) Ĭallback.onResponse( Response.Context: My current application uses normal retrofit calls in order to get data from the api. All subclasses of a sealed class are known at compile-time, which allows you to use them exhaustively in the when expression.Īs you’ve seen in the figure above, there are typically three scenarios where you’d want to construct a sealed class: Sealed classes represent quite more restricted class hierarchies than normal classes in Kotlin. Modeling Retrofit Responses With Sealed Classes/Interfaces

#USE RXJAVA WITH RETROFIT ENQUEUE HOW TO#

Let’s see how to construct the wrapper class with a sealed class. For example, configuring UI elements and displaying a different placeholder/toast depending on error types. The app has the internet permissions and Ive tested it on both emulators and physical devices. enqueue() to call, so why isnt the request sent The app has the internet permissions and Ive tested it on both emulators and physical devices. So how do you solve this problem? It’s simple: Wrap every possible scenario of an API response with a sealed class as in the figure below:īy passing a wrapper class to the call site, the presentation layer can handle results depending on the response type. Converting Retrofit to RxJava means there is no.

#USE RXJAVA WITH RETROFIT ENQUEUE CODE#

This means you should write lots of try-catch boilerplate code for each API request. addConverterFactory (MoshiConverterFactory.create (moshi)). its directly returning null without inserting. There is now an official Retrofit implementation with version 2.9.0: Just use the adapter where you create your Retrofit client: val rxAdapter RxJava3CallAdapterFactory.create () retrofit Retrofit.Builder ().baseUrl (baseUrl). But when i nested all retrofit, First request execute perfectly but after that when i register second request its not callback in enqueue method (i.e.

You also need to handle exceptions somewhere in this multi-layer architecture, because API calls may throw an exception and it can be propagated to the call site. I am using Retrofit 2.0 to make api calls with nesting multiple requests. So if you return an empty list or null when the network request fails, other layers have no idea how to figure out whether the request was successful or not. Call interface provides two methods for making the HTTP requests: execute () Synchronously send the request and return its response. Each call yields its own HTTP request and response pair. The fetchPoster function may return an empty list if the body of the API response is empty. Call.execute () and Call.enqueue () Methods In Retrofit 2, all requests are wrapped into a retrofit2.Call object. In this architecture, you will face the following problem: results are ambiguous on call sites. But from what I remember, the API call is executed as soon as you subsribe to the Single. I never worked much with RxJava ever since LiveData came out.

Since you now return Single<> it makes sense that enqueue() is not an option anymore.

But suppose you need to handle the response and exceptions in a multi-layer architecture as in the API data flow below: The Call class is the class which provides you with the enqueue() method to execute the api call. This snippet is a basic example of calling the Retrofit API and handling the response.

Use rxjava with retrofit enqueue