iOS UIView过渡，不改变navigationbar

Question

我有一个使用 IB 编辑的 UIViewController。我在顶部放置了一个 UINavigationBar 和一个 UISegmentedControl ，在它们下面放置了 3 个 UIViews 。我希望能够使用动画在 UIViews 之间切换，但我只想为 UIViews 设置动画，我希望 navigationBar 和 athe segmentedControl 不动。我展示了我现在如何做的代码。

知道我如何只能移动 3 个 View 吗？

   - (IBAction)segmentedControlValueChanged:(id)sender {

    UISegmentedControl* segmentedControl = sender;

    if(lastSelectedViewIndex != [segmentedControl selectedSegmentIndex]) {

        CATransition *transition = [CATransition animation];
        transition.duration = 0.4;
        transition.timingFunction = [CAMediaTimingFunction functionWithName:kCAMediaTimingFunctionEaseInEaseOut];
        transition.type = kCATransitionMoveIn;

        if(lastSelectedViewIndex < [segmentedControl selectedSegmentIndex])
            transition.subtype = kCATransitionFromLeft;
        else
            transition.subtype = kCATransitionFromRight;

        transition.removedOnCompletion = YES; // force removal of animation when completed.
        {
            switch ([segmentedControl selectedSegmentIndex]) {

                case 0:

                    [self.usageScenarioView setHidden:NO];
                    [self.loginCredentialsView setHidden:YES];
                    [self.whatItCoversView setHidden:YES];

                    [self.pageControl setCurrentPage:0];
                    break;

                case 1:
                    [self.usageScenarioView setHidden:YES];
                    [self.loginCredentialsView setHidden:NO];
                    [self.whatItCoversView setHidden:YES];

                    [self.pageControl setCurrentPage:1];
                    break;

                case 2:
                    [self.usageScenarioView setHidden:YES];
                    [self.loginCredentialsView setHidden:YES];
                    [self.whatItCoversView setHidden:NO];

                    [self.pageControl setCurrentPage:2];

                    break;

            }
        }

        lastSelectedViewIndex = [segmentedControl selectedSegmentIndex];
        [self.view.layer addAnimation:transition forKey:nil];

    }
}

Answer 1

假设您的 3 个 View 被命名为 view1、view2、view3。如果你想删除view1并显示view2或view3，只需执行现有代码，但更改

[self.view.layer addAnimation:transition forKey:nil];

进入

[view1.layer addAnimation:transition forKey:nil];

这只会使 view1 动画化，而不是整个 View 。同样你可以尝试，

[view2.layer addAnimation:transition forKey:nil];
[view3.layer addAnimation:transition forKey:nil];

更准确地说，喜欢

 transition.removedOnCompletion = YES; // force removal of animation when completed.
    {
        switch ([segmentedControl selectedSegmentIndex]) {

            case 0:

                [self.usageScenarioView setHidden:NO];
                [self.loginCredentialsView setHidden:YES];
                [self.whatItCoversView setHidden:YES];

                [self.pageControl setCurrentPage:0];

                [self.usageScenarioView.layer addAnimation:transition forKey:nil];
                break;

            case 1:
                [self.usageScenarioView setHidden:YES];
                [self.loginCredentialsView setHidden:NO];
                [self.whatItCoversView setHidden:YES];

                [self.pageControl setCurrentPage:1];

                [self.loginCredentialsView.layer addAnimation:transition forKey:nil];
                break;

            case 2:
                [self.usageScenarioView setHidden:YES];
                [self.loginCredentialsView setHidden:YES];
                [self.whatItCoversView setHidden:NO];

                [self.pageControl setCurrentPage:2];

                [self.whatItCoversView.layer addAnimation:transition forKey:nil];
                break;

        }
    }

    lastSelectedViewIndex = [segmentedControl selectedSegmentIndex];


}