how to make the notification appear on the locked screen of iphone

Question

我正在显示通知的应用程序。当我的应用程序在后台运行时，通知可以正确显示，但问题是当iPhone屏幕锁定时，通知没有出现。请帮助我解决此问题。

Answer 1

This is a user preference that can be activated in the Notifications section of the Settings app. There is no way to control this from within your app.