页面跳转添加动画

    SecondViewController *secondVC=[[SecondViewController alloc]init];
   
    [UIView beginAnimations:nil context:nil];
    [UIView setAnimationDuration:0.9];
    [UIView setAnimationTransition:UIViewAnimationTransitionFlipFromLeft forView:self.view cache:YES];
    [self.navigationController pushViewController:secondVC animated:NO];
    [UIView commitAnimations];