android_app_keyhash.kt

method to get app keyhash:

First declare following val with you app package name from manifest.
val appPackage = "com.XXX.XXX"

Now add below code to onCreate method of your activity and check logcat after running the app:

        try {
            val info: PackageInfo = packageManager.getPackageInfo(
                appPackage,
                PackageManager.GET_SIGNATURES
            )
            for (signature in info.signatures) {
                val md: MessageDigest = MessageDigest.getInstance("SHA")
                md.update(signature.toByteArray())
                Log.d("KeyHash:", Base64.encodeToString(md.digest(), Base64.DEFAULT))
            }
        } catch (e: PackageManager.NameNotFoundException) {
        } catch (e: NoSuchAlgorithmException) {
        }