objective-c - ios 系统通知 和自定义通知 我想知道WHY

Question

为什么系统的调用2遍,自己的调用一遍,发通知 和接到通知都是一养的,谁遇到过

Answer 1

Hello, system-level notifications are sent by themselves. You don’t need to send them manually, because the system sends it once and you send it manually again, so the system is called twice. Just remove the one you sent manually this time.

Answer 2

It’s true, the first question in life is so stupid