how can i recognize the page leave?

[ivanyang1984]

how can i recognize the page leave? i now have a requirement like if the page shows , there is a notification appears from top. then i need the notification hide when the pages leave , because i assume i made every notification view for each page.

[ivanyang1984]

and i am now using the rznotification view， I have a special case : i need present the notification in A page, then i tried to let it stay there until i click it. but when the page B was pushed, i need the notification of A hide. then i manually invoke the rznotificationview hide method in A 's viewdiddisappear ， but b's notification was dismissed as well. how can i correctly use it?

[time4Wiley]

@ivanyang1984 Looks like a lifecycle relevant issue, what about hiding the rznotifcationView in A's viewWillDisappear?