打开系统Settings(iOS5):
[[UIApplication sharedApplication] openURL:[NSURL URLWithString:@"prefs:root=LOCATION_SERVICES"]];
[[UIApplication sharedApplication] openURL:[NSURL URLWithString:@"prefs:root=TWITTER"]];
[[UIApplication sharedApplication] openURL:[NSURL URLWithString:@"prefs:root=General&path=Bluetooth"]];
[[UIApplication sharedApplication] openURL:[NSURL URLWithString:@"prefs:root=Apps&path=Your+App+Display+Name"]];