fun saveStringToFile(str: String): File {
        val dir = File(context.cacheDir.absolutePath + File.separator + "gpx")
        if(!dir.exists()){
            dir.mkdirs()
        }
        val trackFileName = "file.gpx"

        val file = File(dir, trackFileName)

        file.writeText(str)

        return file
    }


override fun shareFile(gpxFile: File, track: Track) {
        val uriToFile = FileProvider.getUriForFile(requireContext(), getString(R.string.file_provider_authority), gpxFile)
        val shareIntent = ShareCompat.IntentBuilder.from(activity)
                .setStream(uriToFile)
                .intent
        shareIntent.data = uriToFile
        shareIntent.putExtra(Intent.EXTRA_TEXT, "YaWay\n${DateUtil.GetUtcDateAsString(DateUtil.DATEFORMAT_SIMPLE, Date(track.created))}\n${track.description}")
        shareIntent.addFlags(Intent.FLAG_GRANT_READ_URI_PERMISSION)
        startActivity(Intent.createChooser(shareIntent, getString(R.string.share_gpx)))
    }