Great UIKit/Objective-C code snippets

Question

Open an URL in Safari

[[UIApplication sharedApplication] openURL:[NSURL URLWithString:@"http://www.google.com/"]];

Hide the status bar

[[UIApplication sharedApplication] setStatusBarHidden:YES animated:NO];

Dial a Phone Number (iPhone Only)

[[UIApplication sharedApplication] openURL:[NSURL URLWithString:@"tel://9662256888"]];

Launch the Apple Mail

[[UIApplication sharedApplication] openURL:[NSURL URLWithString:@"mailto://mymail@myserver.com"]];

stop responding to touch events

[[UIApplication sharedApplication] beginIgnoringInteractionEvents];

active the touch events

[[UIApplication sharedApplication] endIgnoringInteractionEvents];

Show the network Activity Indicator

[UIApplication sharedApplication].networkActivityIndicatorVisible = YES;

Hide the network Activity Indicator

[UIApplication sharedApplication].networkActivityIndicatorVisible = NO;

Prevents iPhone goes into sleep mode

[UIApplication sharedApplication].idleTimerDisabled = YES;