ios退出APP实现

- (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);
}