Post multipart request with Android SDK

Question

I\'m trying to do something I thought would be relatively simple: Upload an image to a server with the Android SDK. I\'m found a lot of example code:

http://groups.g

Answer 1

For posterity, I didn't see okhttp mentioned. Related post.

Basically you build up the body using a MultipartBody.Builder, and then post this in a request.

Example in kotlin:

    val body = MultipartBody.Builder()
            .setType(MultipartBody.FORM)
            .addFormDataPart(
                "file", 
                file.getName(),
                RequestBody.create(MediaType.parse("image/png"), file)
            )
            .addFormDataPart("timestamp", Date().time.toString())
            .build()

    val request = Request.Builder()
            .url(url)
            .post(body)
            .build()

    httpClient.newCall(request).enqueue(object : okhttp3.Callback {
        override fun onFailure(call: Call?, e: IOException?) {
            ...
        }

        override fun onResponse(call: Call?, response: Response?) {
            ...
        }
    })