UIApplication openURL background
问题 In my iOS 4 application, I need to open a URL from the background, at a time specified from the user. However, for some reason, I cannot launch a URL from the background for some reason. Here is my code for opening a URL: if (![[UIApplication sharedApplication] openURL:[NSURL URLWithString:@"http://www.stackoverflow.com"]]) { // the URL wasn't opened. we will ignore this for now. } That code is all being launched from a daemon thread created earlier. I have tested this code on the simulator,