Stopping text messages from appearing immediately whatever app I am in

I was showing someone a short video on facebook when a personal incoming text appeared at the top of my screen. How can I stop this happening ?

Show Accepted Answer

Guest Quick Reply (No URL, BBcode or HTML)

Last post by kacey32
4 hours ago
Last post by narmstrong
38 minutes ago
Last post by georgianna.raynor
4 hours ago
Last post by wfeil
1 hour ago
Last post by ysatterfield
2 hours ago
Last post by otho06
30 minutes ago
Last post by emmalee00
28 minutes ago
Last post by htillman
3 hours ago
Last post by gkunze
2 hours ago
Last post by rjacobson
1 hour ago
Last post by runolfsson.shad
1 hour ago
Need Help
Started by arnaldo45
Last post by vita.boyle
45 minutes ago