MultiPartRequest.java

package com.prashant.adesara.volleysample.toolbox;

import java.io.File;
import java.io.UnsupportedEncodingException;
import java.util.HashMap;
import java.util.Map;

import org.json.JSONException;
import org.json.JSONObject;

import com.android.volley.AuthFailureError;
import com.android.volley.NetworkResponse;
import com.android.volley.ParseError;
import com.android.volley.Response;
import com.android.volley.Response.ErrorListener;
import com.android.volley.Response.Listener;
import com.android.volley.toolbox.HttpHeaderParser;
import com.android.volley.toolbox.JsonRequest;

public class MultiPartRequest extends JsonRequest<JSONObject> {

	/* To hold the parameter name and the File to upload */
	private Map<String,File> fileUploads = new HashMap<String,File>();
	
	/* To hold the parameter name and the string content to upload */
	private Map<String,String> stringUploads = new HashMap<String,String>();
	
	private Map<String, String> headers = new HashMap<String, String>();
	
    /**
     * Creates a new request.
     * @param method the HTTP method to use
     * @param url URL to fetch the JSON from
     * @param jsonRequest A {@link JSONObject} to post with the request. Null is allowed and
     *   indicates no parameters will be posted along with request.
     * @param listener Listener to receive the JSON response
     * @param errorListener Error listener, or null to ignore errors.
     */
    public MultiPartRequest(int method, String url, JSONObject jsonRequest,
            Listener<JSONObject> listener, ErrorListener errorListener) {
        super(method, url, (jsonRequest == null) ? null : jsonRequest.toString(), listener,
                    errorListener);
    }

    /**
     * Constructor which defaults to <code>GET</code> if <code>jsonRequest</code> is
     * <code>null</code>, <code>POST</code> otherwise.
     *
     * @see #JsonObjectRequest(int, String, JSONObject, Listener, ErrorListener)
     */
    public MultiPartRequest(String url, JSONObject jsonRequest, Listener<JSONObject> listener,
            ErrorListener errorListener) {
        this(jsonRequest == null ? Method.GET : Method.POST, url, jsonRequest,
                listener, errorListener);
    }


    public void addFileUpload(String param,File file) {
    	fileUploads.put(param,file);
    }
    
    public void addStringUpload(String param,String content) {
    	stringUploads.put(param,content);
    }
    
    public Map<String,File> getFileUploads() {
    	return fileUploads;
    }
    
    public Map<String,String> getStringUploads() {
    	return stringUploads;
    }
    
	@Override
	public Map<String, String> getHeaders() throws AuthFailureError {
		return headers;
	}
	
	public void setHeader(String title, String content) {
		 headers.put(title, content);
	}

    @Override
    protected Response<JSONObject> parseNetworkResponse(NetworkResponse response) {
        try {
            String jsonString =
                new String(response.data, HttpHeaderParser.parseCharset(response.headers));
            return Response.success(new JSONObject(jsonString),
                    HttpHeaderParser.parseCacheHeaders(response));
        } catch (UnsupportedEncodingException e) {
            return Response.error(new ParseError(e));
        } catch (JSONException je) {
            return Response.error(new ParseError(je));
        }
    }
}