openMessages method

 public void openMessage(View view)
    {
        if (VERSION.SDK_INT >= VERSION_CODES.KITKAT) //At least KitKat
        {
            String defaultSmsPackageName = Telephony.Sms.getDefaultSmsPackage(getApplicationContext()); //Need to change the build to API 19

            Intent sendIntent = new Intent(Intent.ACTION_SEND);
            sendIntent.setType("text/plain");
            sendIntent.putExtra(Intent.EXTRA_TEXT, smsText);

            if (defaultSmsPackageName != null)//Can be null in case that there is no default, then the user would be able to choose any app that support this intent.
            {
                sendIntent.setPackage(defaultSmsPackageName);
            }
            getApplicationContext().startActivity(sendIntent);

        }
        else //For early versions, do what worked for you before.
        {
            Intent sendIntent = new Intent(Intent.ACTION_VIEW);
            sendIntent.setData(Uri.parse("sms:"));
            sendIntent.putExtra("sms_body", smsText);
            getApplicationContext().startActivity(sendIntent);
        }

    }