simple Android example for APIv2 required

Hello Greg,

I am having problems uploading the single selected file from a fixed Android folder called "em" to a Dropbox apps folder. I have implemented the code exactly as per example app: UploadFileTask.java

Here is the problem section of the code after some modifications:

    @Override
    protected FileMetadata doInBackground(String... params) {
        String remoteFileName = params[0];

        if (remoteFileName != null) {
            File outPath = Environment.getExternalStorageDirectory();
            String remoteFolderPath = outPath.getAbsolutePath() + "/" + "em";
            File localFile = new File(remoteFolderPath, remoteFileName);

            try (InputStream inputStream = new FileInputStream(localFile)) {
                return mDbxClient.files().uploadBuilder(remoteFolderPath + "/" + remoteFileName)
                        .withMode(WriteMode.OVERWRITE)
                        .uploadAndFinish(inputStream);
            } catch (DbxException | IOException e) {
                mException = e;
            }
        }

        return null;
    }

The remoteFolderPath string is "/storage/emulated/0/em"  and the remoteFileName string is "EM.db"

The localFile is  /storage/emulated/0/em/EM.db

The EM.db file does exist in that particular folder and the storage path is identical to the one generated in the APIv1 code, which worked perfectly well.

I am getting an error message: ..."/storage/emulated/0/em/EM.db: open failed: EACCES Permission denied"

I tried it with several different files and different folders without success. The same error al the time.

Can you see any problems with this code ?

Another issue: the above example code requires a minimum Android SdkVersion = 19. My app currently uses minimum SdkVersion = 14 which works well with the old APIv1 code:

fis = new FileInputStream(file);
mApi.putFileOverwrite(file, fis, file.length(),
etc. as per DBRoulete app. example.

 Can you plese suggest how to resolve these issues and how to overcome Android SdkVersion restrictions.

Thanks.