ios - 完成后如何执行方法 UILocalNotification cancelLocalNotification : in iOS 8 or 9

Question

我需要在通过 cancelLocalNotification: 删除相同的 UILocalNotification 后显示它。问题是移除执行速度比触发新通知慢，并且移除刚刚添加的通知。

如何确定 UILocalNotification cancelLocalNotification: 已完成？

Answer 1

调用 UILocalNotification cancelLocalNotification 后可以稍等片刻:并重新注册新的 UILocalNotification

像这样

[[UIApplication sharedApplication] cancelLocalNotification:someNotification];
dispatch_after(dispatch_time(DISPATCH_TIME_NOW, 1 * NSEC_PER_SEC), dispatch_get_main_queue(), ^{
/* register UILocalNotification again here after delay */

});