iOS 代码关闭App

程序的死亡大致有三种：自然死亡，即无疾而终，通常就是main()中的一个return 0;自杀，当程序发现自己再活下去已经没有任何意义时，通常会选择自杀。当然，这种自杀也是一种请求式的自杀，即请求OS将自己毙掉

方法一.

    UIAlertView *alert = [[UIAlertView alloc] initWithTitle:@"退!出!" message:@"退出APP" delegate:self cancelButtonTitle:@"取消" otherButtonTitles:@"退出", nil];    [alert show];

- (void)alertView:(UIAlertView *)alertView clickedButtonAtIndex:(NSInteger)buttonIndex{    if(buttonIndex ==1){        [self exitApplication];    }}-(void)exitApplication{        AppDelegate *app = [UIApplication sharedApplication].delegate;        UIWindow *window = app.window;        [UIView animateWithDuration:1.0f animations:^{            window.alpha = 0;            window.frame = CGRectMake(0, window.bounds.size.width, 0, 0);        } completion:^(BOOL finished) {            exit(0);        }];        //exit(0);}

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方法二.

#pragma mark - 第二种方法- (void)exitApplication1{    [UIView beginAnimations:@"exitApplication" context:nil];    [UIView setAnimationDuration:0.5];    [UIView setAnimationDelegate:self];    // [UIView setAnimationTransition:UIViewAnimationCurveEaseOut forView:self.view.window cache:NO];    AppDelegate *delegate = (AppDelegate *)[UIApplication sharedApplication].delegate;    [UIView setAnimationTransition:UIViewAnimationCurveEaseOut forView:delegate.window cache:NO];    [UIView setAnimationDidStopSelector:@selector(animationFinished:finished:context:)];    //self.view.window.bounds = CGRectMake(0, 0, 0, 0);    delegate.window.bounds = CGRectMake(0, 0, 0, 0);    [UIView commitAnimations];}- (void)animationFinished:(NSString *)animationID finished:(NSNumber *)finished context:(void *)context {    if ([animationID compare:@"exitApplication"] == 0) {        exit(0);    }}

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