Retrofit download file example

It was very helpful. Thank you. I succeeded in downloading images from nodejs server using this example. What should I do? The whole progress happens after the file is downloaded. Please consider testing before publishing to the world. Your email address will not be published. Github Project Link. Prev Android ListView using Kotlin. NaviRamyle NaviRamyle 3, 1 1 gold badge 29 29 silver badges 49 49 bronze badges. Thanks for the response, I will try it and will get back to you.

That's an object class, you can change it to just Object — NaviRamyle. I get this error: Only methods having Response as data type are allowed to have Streaming annotation. I'm using asynchronous mode. Ehsan you can use Response import retrofit. Response; as model and get a String from that Response object. Show 2 more comments. This code won't even compile. You can't initialize things in an Interface.

For IOUtils, add dependency implementation 'org. CoolMind 20k 12 12 gold badges silver badges bronze badges. Shahid Khan Shahid Khan 2 2 silver badges 10 10 bronze badges. This solution requires RxJava and AsyncTask. And why would you use AsyncTask when you have RxJava?

If you read this, please, don't use the answer above. It mixes different programming approaches without any advantage. Optional Query Parameters. Send Data Form-Urlencoded. How to Use Dynamic Urls for Requests.

Reuse and Analyze Requests. Optional Path Parameters. Customize Network Timeouts. Dynamic Endpoint-Dependent Interceptor Actions. How to Delete Objects on the Server. Receive Plain-String Responses. Introduction to Multiple Converters. Implementing Custom Converters. Unwrapping Envelope Responses with Custom Converter. Wrapping Requests in Envelope with Custom Converter. Define a Custom Response Converter.

Error Handling for Synchronous Requests. Log Requests and Responses. Enable Logging for Development Builds Only. Using the Log Level to Debug Requests. Debug and Compare Requests with RequestBin. Introduction to Call Adapters. How to Integrate RxJava 1. How to Integrate RxJava 2. How to Integrate Guava Call Adapter. Pagination Using Query Parameter. How to Upload Files to Server. How to Upload Multiple Files to Server. If you are confused about Service Generator. Once the service is created, we can make network requests just like other Retrofit calls.

One important thing left is the writeResponseBodyToDisk function hidden in the code block: responsible for writing files to disk. The code looks a little more complicated than it actually is:. You just need to care about the first line of code, which is what name the file is ultimately saved.

When you're done, you can use Retrofit to download files. But we are not fully prepared. And there's a big problem here: By default, Retrofit reads the entire Server Response into memory before processing the results, which works well on JSON or XML and other Responses, but if it's a very large file, it can cause an OutofMemory exception.

If your application needs to download a slightly larger file, we strongly recommend reading the next section.