I'm creating an alert pager app by using Ionic(v1) framework, which the notification message is very important for user, and they don't want to miss it.
However the normal android / ios notification can only display the message on the screen + play notification sound once, which user always miss the messages.
Anyone can suggest if there's any way that can generate the notification similar to in-coming call or clock alarm, it can ring forever until user acknowledge the message by pressing the button, and that alarm notification screen can be displayed on standby mode as well?
Thanks in advance!
