建一个button
UIButton*button = [UIButtonbuttonWithType:UIButtonTypeCustom];
button.frame=CGRectMake(100,100,100,100);
button.backgroundColor= [UIColorredColor];
[buttonaddTarget:selfaction:@selector(exitApp)forControlEvents:UIControlEventTouchUpInside];
[self.viewaddSubview:button];
点击：
-(void)exitApp
{exit(0);}
当然，你可以做一些动画。
-(void)exitApp
{
[UIViewbeginAnimations:@"exitApplication"context:nil];
[UIViewsetAnimationDuration:0.5];
[UIViewsetAnimationDelegate:self];
UIWindow*window = [UIApplicationsharedApplication].keyWindow;
[UIViewsetAnimationTransition:UIViewAnimationTransitionCurlDownforView:windowcache:NO];
[UIViewsetAnimationDidStopSelector:@selector(animationFinished:finished:context:)];
window.bounds=CGRectMake(0,0,0,0);
[UIViewcommitAnimations];
exit(0);
}
- (void)animationFinished:(NSString*)animationID finished:(NSNumber*)finished context:(void*)context {
if([animationIDcompare:@"exitApplication"] ==0) {
exit(0);
}
}
