Replying on your lock screen on the ipod 5th gen?

I have the Ipod Touch 5th generation. I can reply to messages through imessage on the lock screen but no other apps will do it. (for example: twitter, textnow, gmail,etc.) How do I fix this? I swipe across and it will say reply and I will click on it but It makes me type in the passcode and go to the app. I tried turning off the passcode and it still will not work.