模态视图控制器

Question

我在 Xcode 中使用以下代码在 iPhone 应用程序中的 2 个视图之间水平翻转

 -(IBAction)switchView:(id)sender{
    Algorithm2ViewController *Algorithm2ViewControllergo = [[Algorithm2ViewController    alloc]
                                                            initWithNibName:@"Algorithm2ViewController"                                                    bundle:nil];

    [UIView beginAnimations:@"flipview" context:nil];
    [UIView setAnimationDuration:1];
    [UIView setAnimationCurve:UIViewAnimationCurveEaseInOut];
    [UIView setAnimationTransition:UIViewAnimationTransitionFlipFromLeft 
                           forView:self.view cache:NO];
    [self.view addSubview:Algorithm2ViewControllergo.view];

    [UIView commitAnimations];
}

，第一次翻转后我在翻转完成之前在后台获得了即将出现的视图的图像，我该如何摆脱它？

Answer 1

我已经在第二个视图中找到了这一点，添加以下代码

-(IBAction)switchView2:(id)sender{

    SecondViewController *SecondViewControllergo = [[SecondViewController alloc]
                                                    initWithNibName:@"SecondView"
                                                    bundle:nil];

    [UIView beginAnimations:@"flipview" context:nil];
    [UIView setAnimationDuration:2];
    [UIView setAnimationCurve:UIViewAnimationCurveEaseInOut];
    [UIView setAnimationTransition:UIViewAnimationTransitionFlipFromLeft 
                           forView:self.view.superview cache:NO];
    [self.view addSubview:SecondViewControllergo.view];
    [self.view removeFromSuperview];
    [UIView commitAnimations]; 
    [SecondViewControllergo release];


}

从超级视图行中删除将删除背景图像