在后台運行應用程序時顯示UIAlert？

Question

UIAlertView *alertView = [[UIAlertView alloc] initWithTitle:@"open app" message:@" backgr..." delegate:nil cancelButtonTitle:@"OK" otherButtonTitles:nil];

[alertView show];

應用在后台運行時如何顯示警報？

Answer 1

當您的應用程序在后台時，請使用UILocalNotification 。

UILocalNotification *notification = [[UILocalNotification alloc] init];
notification.alertBody = @"Your message";
notification.alertAction = @"Open app";
[[UIApplication sharedApplication] presentLocalNotificationNow:notification];