GsonRequest w/ support for headers and body

GsonRequestHeaders.java

/**
 * Copyright 2013 Ognyan Bankov
 * modified by Michal Ursiny for purposes of Fuerte Eshop adding headers and body support
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *      http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

package com.your.package;

import android.annotation.SuppressLint;
import android.os.Build;
import android.util.Log;

import com.google.common.base.Charsets;
import com.google.gson.Gson;
import com.android.volley.AuthFailureError;
import com.android.volley.Response.ErrorListener;
import com.android.volley.Response.Listener;
import java.util.Collections;
import java.util.HashMap;
import java.util.Map;

public class GsonRequestHeaders<T> extends GsonRequest<T> {

    /** Charset for request. */
    private static final String PROTOCOL_CHARSET = "utf-8";

    /** Content type for request. */
    private static final String PROTOCOL_CONTENT_TYPE =
        String.format("application/json; charset=%s", PROTOCOL_CHARSET);
	
    private final Map<String, String> mHeaders;
    private final String mBody;

    public GsonRequestHeaders(int method,
                       String url,
                       Class<T> clazz,
                       Listener<T> listener,
                       ErrorListener errorListener,
                       Map<String, String> headers,
                       String body
    				   ) {
        super(method, url, clazz, listener, errorListener);
        this.mHeaders = headers;
        this.mBody = body;
    }
    
    public GsonRequestHeaders(int method,
    		String url,
    		Class<T> clazz,
    		Listener<T> listener,
    		ErrorListener errorListener,
    		Gson gson,
    		Map<String, String> headers,
    		String body
    		) {
    	super(method, url, clazz, listener, errorListener, gson);
    	this.mHeaders = headers;
    	this.mBody = body;
    }
    
    @SuppressLint("NewApi")
	@Override
    public byte[] getBody() throws AuthFailureError {
//        ByteArrayOutputStream bos = new ByteArrayOutputStream();
//        try {
//        	mBody.
//            entity.writeTo(bos);
//        } catch (IOException e) {
//            VolleyLog.e("IOException writing to ByteArrayOutputStream");
//        }
    	if (Build.VERSION.SDK_INT < 9 ) {
    		return mBody.getBytes();
         }
    	else return mBody.getBytes(Charsets.UTF_8);
    }

    @Override
    public String getBodyContentType() {
        return PROTOCOL_CONTENT_TYPE;
    }
    
    /* (non-Javadoc)
     * @see com.android.volley.Request#getHeaders()
     */
    @Override
    public Map<String, String> getHeaders() throws AuthFailureError {
        Map<String, String> headers = super.getHeaders();

        if (headers == null
                || headers.equals(Collections.emptyMap())) {
            headers = new HashMap<String, String>();
        }
        if (mHeaders!=null) {
        	headers.putAll(mHeaders);
        }
        Log.v("GsonRequestHeaders",headers.toString());
        return headers;
    }

}