Elblassy

private fun openWhatsApp(fileName: String) {
        val smsNumber = mobileNumber
        val isWhatsappInstalled = "com.whatsapp".whatsappInstalledOrNot()

        if (isWhatsappInstalled) {
            val sendIntent = Intent(Intent.ACTION_SEND)
            val outputFile = File(
                requireContext().getExternalFilesDir(Environment.DIRECTORY_DOWNLOADS),
                fileName
            )

Elblassy

private Socket mSocket;

    {
        try {
            mSocket = IO.socket("yourLinkToSocket");
            Log.d(TAG, "instance initializer: correct");

        } catch (URISyntaxException e) {
            Log.d(TAG, "instance initializer: " + e.getMessage());
        }