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

Here is a Simple approach if you are using the AOSP library Volley.

Extend the class Request as follows-

public class MultipartRequest extends Request {
    private static final String FILE_PART_NAME = "file";
    private final Response.Listener mListener;
    private final Map mFilePart;
    private final Map mStringPart;
    MultipartEntityBuilder entity = MultipartEntityBuilder.create();
    HttpEntity httpentity;

    public MultipartRequest(String url, Response.ErrorListener errorListener,
                            Response.Listener listener, Map file,
                            Map mStringPart) {
        super(Method.POST, url, errorListener);
        mListener = listener;
        mFilePart = file;
        this.mStringPart = mStringPart;
        entity.setMode(HttpMultipartMode.BROWSER_COMPATIBLE);
        buildMultipartEntity();
    }

    public void addStringBody(String param, String value) {
        mStringPart.put(param, value);
    }

    private void buildMultipartEntity() {
        for (Map.Entry entry : mFilePart.entrySet()) {
            // entity.addPart(entry.getKey(), new FileBody(entry.getValue(), ContentType.create("image/jpeg"), entry.getKey()));
            try {
                entity.addBinaryBody(entry.getKey(), Utils.toByteArray(new FileInputStream(entry.getValue())), ContentType.create("image/jpeg"), entry.getKey() + ".JPG");
            } catch (FileNotFoundException e) {
                e.printStackTrace();
            }
        }
        for (Map.Entry entry : mStringPart.entrySet()) {
            if (entry.getKey() != null && entry.getValue() != null) {
                entity.addTextBody(entry.getKey(), entry.getValue());
            }
        }
    }

    @Override
    public String getBodyContentType() {
        return httpentity.getContentType().getValue();
    }

    @Override
    public byte[] getBody() throws AuthFailureError {
        ByteArrayOutputStream bos = new ByteArrayOutputStream();
        try {
            httpentity = entity.build();
            httpentity.writeTo(bos);
        } catch (IOException e) {
            VolleyLog.e("IOException writing to ByteArrayOutputStream");
        }
        return bos.toByteArray();
    }

    @Override
    protected Response parseNetworkResponse(NetworkResponse response) {
        Log.d("Response", new String(response.data));
        return Response.success(new String(response.data), getCacheEntry());
    }

    @Override
    protected void deliverResponse(String response) {
        mListener.onResponse(response);
    }
}

You can create and add a request like-

Map params = new HashMap<>();
        params.put("name", name.getText().toString());
        params.put("email", email.getText().toString());
        params.put("user_id", appPreferences.getInt( Utils.PROPERTY_USER_ID, -1) + "");
        params.put("password", password.getText().toString());
        params.put("imageName", pictureName);
        Map files = new HashMap<>();
        files.put("photo", new File(Utils.LOCAL_RESOURCE_PATH + pictureName));
        MultipartRequest multipartRequest = new MultipartRequest(Utils.BASE_URL + "editprofile/" + appPreferences.getInt(Utils.PROPERTY_USER_ID, -1), new Response.ErrorListener() {
            @Override
            public void onErrorResponse(VolleyError error) {
                // TODO Auto-generated method stub
                Log.d("Error: ", error.toString());
                FugaDialog.showErrorDialog(ProfileActivity.this);
            }
        }, new Response.Listener() {
            @Override
            public void onResponse(String jsonResponse) {
                JSONObject response = null;
                try {
                    Log.d("jsonResponse: ", jsonResponse);
                    response = new JSONObject(jsonResponse);

                } catch (JSONException e) {
                    e.printStackTrace();
                }
                try {
                    if (response != null && response.has("statusmessage") && response.getBoolean("statusmessage")) {
                        updateLocalRecord();

                    }
                } catch (JSONException e) {
                    e.printStackTrace();
                }
                FugaDialog.dismiss();
            }

        }, files, params);
        RequestQueue queue = Volley.newRequestQueue(this);
        queue.add(multipartRequest);