FB signin

printAppHashKey programmatically

    private fun printHashKey(context: Context) {
        try {
            val info =
                context.packageManager.getPackageInfo(context.packageName, PackageManager.GET_SIGNATURES)
            for (signature in info.signatures) {
                val md = MessageDigest.getInstance("SHA")
                md.update(signature.toByteArray())
                val hashKey = String(Base64.encode(md.digest(), 0))
                Log.i("printHashKey()",  "Hash Key: $hashKey")
            }
        } catch (e: NoSuchAlgorithmException) {
            e.printStackTrace()
        } catch (e: Exception) {
            e.printStackTrace()
        }
    }