图片上传

public class UpLoadActivity extends TakePhotoActivity implements ContractClass.ReleaseFinish {

    @BindView(R.id.titleview)
    TitleView titleview;
    @BindView(R.id.edittext)
    EditText edittext;
    @BindView(R.id.recyclerview)
    RecyclerView recyclerview;
    @BindView(R.id.imageview)
    ImageView imageview;
    @BindView(R.id.intentttt)
    Button intentttt;
    private List<MultipartBody.Part> parts = new ArrayList<>();
    private List<File> pics = new ArrayList<>();
    private MyAdapter myAdapter;
    private UpLoadPresenter upLoadPresenter;
    private int userId;
    private String sessionId;

    @Override
    protected void onCreate(@Nullable Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);


        setContentView(R.layout.activity_upload);
        ButterKnife.bind(this);

        Intent intent = getIntent();
        userId = intent.getIntExtra("userId", 0);
        sessionId = intent.getStringExtra("sessionId");
        myAdapter = new MyAdapter(pics);
        recyclerview.setLayoutManager(new GridLayoutManager(this, 3));
        recyclerview.setAdapter(myAdapter);

        upLoadPresenter = new UpLoadPresenter();
        upLoadPresenter.onAttch(this);

        Map<String, Object> maphead = new HashMap<>();
        maphead.put("userId", userId);
        maphead.put("sessionId", sessionId);

        Map<String, Object> mapbody = new HashMap<>();
        mapbody.put("commodityId", 1);
        mapbody.put("content", "推送图片");


        titleview.setSetOnClick(new TitleView.SetOnClick() {
            @Override
            public void clickimage(View view) {
                finish();
            }

            @Override
            public void clickrightimage(View view) {
                if (pics.size() == 0) {
                    Toast.makeText(UpLoadActivity.this, "还没有选择照片哦", Toast.LENGTH_SHORT).show();
                } else {
                    upLoadPresenter.beginLogin(maphead, mapbody, parts);
                }
            }
        });

        imageview.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View view) {

                //获取TakePhoto对象
                TakePhoto takePhoto = getTakePhoto();
                //从图片库选择图片
                takePhoto.onPickFromGallery();
            }
        });

    }


    /**
     * 接受图片结果
     * <p>
     * 绝对路径 -》 文件 -》 RequestyBody -》 Part  -》 添加到List<Part> ->调用接口
     *
     * @param result
     */
    @Override
    public void takeSuccess(TResult result) {
        super.takeSuccess(result);
        if (parts.size() < 4) {
            TImage image = result.getImage();
            //拿到单个图片的绝对路径
            String originalPath = image.getOriginalPath();
            //把路径转换成文件
            File file = new File(originalPath);
            pics.add(file);
            myAdapter.notifyDataSetChanged();

            //图片类型  通过parse方法
            MediaType parse = MediaType.parse("image/*");
            Log.i("TAG", "takeSuccess: " + parse);
            //根据类型和文件构造一个请求体    通过create方法
            RequestBody requestBody = RequestBody.create(parse, file);
            //根据key、文件名字、请求体构造一个part对象 通过createFormData
            MultipartBody.Part part = MultipartBody.Part.createFormData("image", file.getName(), requestBody);

            parts.add(part);
        } else {
            Toast.makeText(this, "不能再多了", Toast.LENGTH_SHORT).show();
        }
    }

    @Override
    public void success(Object o) {
        UpLoadBean upLoadBean = (UpLoadBean) o;
        Toast.makeText(this, "" + upLoadBean.getMessage(), Toast.LENGTH_SHORT).show();

        Intent intent = new Intent(UpLoadActivity.this, ShowActivity.class);
        intent.putExtra("userId", userId);
        intent.putExtra("sessionId", sessionId);
        startActivity(intent);

        finish();

    }

    @OnClick(R.id.intentttt)
    public void onViewClicked() {
        Intent intent = new Intent(UpLoadActivity.this, ShowActivity.class);
        intent.putExtra("userId", userId);
        intent.putExtra("sessionId", sessionId);
        startActivity(intent);

        finish();
    }
}

//图片上传需要的注解和正常的有所差别
@Multipart
@POST("/small/circle/verify/v1/releaseCircle")
Observable<UpLoadBean> Release(@HeaderMap Map<String,Object> maphead, @QueryMap Map<String,Object> mapbody, @Part List<MultipartBody.Part> parts);