我有一个图像，我想使用Volley库将该图像上传到我的Web服务，问题是我正在寻找一种方法，但仍然没有找到。

我找到了，但是对我不起作用：http : //develop-for-
android.blogspot.com.br/2014/01/using-volley-in-your-
application.html

我怎样才能做到这一点 ？

我正在尝试这个。

@Override
protected void onActivityResult(int requestCode, int resultCode, Intent data) {
    super.onActivityResult(requestCode, resultCode, data);

    if (requestCode == RESULT_LOAD_IMAGE && resultCode == RESULT_OK && null != data) {
        Uri selectedImage = data.getData();
        String[] filePathColumn = { MediaStore.Images.Media.DATA };

        Cursor cursor = getContentResolver().query(selectedImage,
                filePathColumn, null, null, null);
        cursor.moveToFirst();

        int columnIndex = cursor.getColumnIndex(filePathColumn[0]);
        fotoPerfil = cursor.getString(columnIndex);
        cursor.close();

        ImageView imageView = (ImageView) findViewById(R.id.imgView);
        imageView.setImageBitmap(BitmapFactory.decodeFile(picturePath));

    }     
}

UploadoImageToServer upload = new UploadoImageToServer();   
ApplicationController app = new UsuarioDAO().insert(usuario, upload.upload(fotoPerfil, em[0]), new UsuarioAdapter(){
    @Override
    public void usuarioIsAdded(Boolean result){
        Log.i("Adicionou: ", result + "");
        progress.dismiss();
    }                   
});
CustomVolleySingleton.getInstance(getApplicationContext()).addToRequestQueue(app);

public class UploadoImageToServer {
    public String upload(String image,String nomeImagem){
        Bitmap bitmap = BitmapFactory.decodeFile(image);
        ByteArrayOutputStream stream = new ByteArrayOutputStream();
        bitmap.compress(Bitmap.CompressFormat.PNG, 90, stream); 
        byte [] byte_arr = stream.toByteArray();
        String image_str = Base64.encodeBytes(byte_arr);
        return image_str;               
    }
}

/** add an user and upload your foto(image) */
public ApplicationController insert(Usuario u, String uploadFile, final UsuarioAdapter listener) {
    boolean insert = false;

    HashMap<String, String> params = new HashMap<String, String>();
    params.put("nome", u.getNome());
    params.put("email", u.getEmail());
    params.put("senha", u.getSenha());      
    params.put("tipo", "usuarios");
    params.put("acao", "add");
    params.put("device_tipo", "android");
    params.put("device", AndroidReturnId.getAndroidId());
    params.put("uploadedfile", uploadFile);
    Log.i("URL: ", urlPost.toString());

    ApplicationController apc = new ApplicationController(Method.POST, urlPost.toString(), params,
        new Response.Listener<JSONObject>() {
            @Override
            public void onResponse(JSONObject obj) {
                try {
                    if(obj.getString("cod").equals("999")){                                                                             
                        listener.usuarioIsAdded(true);
                    }else{
                        listener.usuarioIsAdded(false);                                                     
                    }
                } catch (JSONException e) {                                                                     
                    e.printStackTrace();
                }
            }
        }, 
        new Response.ErrorListener() {
            @Override
            public void onErrorResponse(VolleyError arg0) {
                Log.e("ERROR METHOD:", "insert in UsuarioDAO: " + arg0.getLocalizedMessage());
            }                                                                         
        });

    return apc;
}