Retrofit+RxJava 上传文件

通过uri获取绝对路径

// 文件上传
@POST("quarter/publishJoke")
@Multipart
Observable uploadFile(@QueryMap Map,String> map, @Part List parts);

public void uploadFiles(List files, HashMap, String> mapStr) {
    ArrayList parts = new ArrayList<>();
    for (int i = 0; i < files.size(); i++) {
        File file = files.get(i);
        RequestBody requestFile = RequestBody.create(MediaType.parse("multipart/form-data"), file);
        MultipartBody.Part jokeFile = MultipartBody.Part.createFormData("jokeFiles", file.getName(), requestFile);
        parts.add(jokeFile);
    }

    RetrofitUtil.getApiService(HttpConfig.BASE_URL).uploadFile(mapStr, parts)
            .observeOn(AndroidSchedulers.mainThread())
            .subscribeOn(Schedulers.io())
            .subscribe(new Observer() {
                @Override
                public void onSubscribe(Disposable d) {
                    disposable = d;
                }

                @Override
                public void onNext(ResponseBody responseBody) {
                    try {
                        String string = responseBody.string();
                        Log.e("AA", string);
                    } catch (IOException e) {
                        e.printStackTrace();
                    }
                }

                @Override
                public void onError(Throwable e) {
                    Log.e("AA", e.toString());
                }

                @Override
                public void onComplete() {

                }
            });

}

// 通过uri

// api>=19
@SuppressLint("NewApi")
private static String getRealPathFromUri_AboveApi19(Context context, Uri uri) {
    String filePath = null;
    String wholeID = DocumentsContract.getDocumentId(uri);

    // 使用':'分割
    String id = wholeID.split(":")[1];

    String[] projection = { MediaStore.Images.Media.DATA };
    String selection = MediaStore.Images.Media._ID + "=?";
    String[] selectionArgs = { id };

    Cursor cursor = context.getContentResolver().query(
            MediaStore.Images.Media.EXTERNAL_CONTENT_URI, projection,
            selection, selectionArgs, null);
    int columnIndex = cursor.getColumnIndex(projection[0]);

    if (cursor.moveToFirst()) {
        filePath = cursor.getString(columnIndex);
    }
    cursor.close();
    return filePath;
}