convert image to base64

gistfile1.txt

fun convertImageToBase64(imageFile: File): String {
    return ByteArrayOutputStream().use { outputStream ->
        Base64OutputStream(outputStream, Base64.DEFAULT).use { base64FilterStream ->
            imageFile.inputStream().use { inputStream ->
                inputStream.copyTo(base64FilterStream)
            }
        }
        return@use outputStream.toString()
    }
}

fun convertImageToBase64(path: String): String {
    try {
        val imageFile = File(path)
        var fis: FileInputStream? = null
        try {
            fis = FileInputStream(imageFile)
        } catch (e: FileNotFoundException) {
            e.printStackTrace()
        }
        val bm = BitmapFactory.decodeStream(fis)
        val baos = ByteArrayOutputStream()
        bm.compress(Bitmap.CompressFormat.JPEG, 100, baos)
        val b = baos.toByteArray()
        return Base64.encodeToString(b, Base64.DEFAULT)
    } catch (e: Exception) {
        return ""
    }
}

fun convertImageToBase64(uri: Uri): String {
    try {
        val imageStream: InputStream = getContentResolver().openInputStream(uri)
        val bm = BitmapFactory.decodeStream(imageStream)
        val baos = ByteArrayOutputStream()
        bm.compress(Bitmap.CompressFormat.JPEG, 100, baos)
        val b = baos.toByteArray()
        return Base64.encodeToString(b, Base64.NO_WRAP)
    } catch (e: Exception) {
        return ""
    }
}