我正在使用 iOS 7 自定义转换来呈现 UINavigationController。但有一个问题。在动画时,导航栏的大小只有 44 点。然后在完成动画后,导航控制器发现有一个状态栏,所以它为状态栏添加了 20 点。
我的问题是,是否可以在动画时将导航栏设置为 64 点,因此在动画完成后它不再改变。
请在此处查看更多详细信息自定义视图转换
这是我的自定义动画代码:
- (void)animateTransition:(id<UIViewControllerContextTransitioning>)transitionContext{
UIViewController *toViewController = [transitionContext viewControllerForKey:UITransitionContextToViewControllerKey];
CGRect finalFrame = [transitionContext finalFrameForViewController:toViewController];
UIView *containerView = [transitionContext containerView];
CGRect screenBounds = [[UIScreen mainScreen] bounds];
toViewController.view.frame = CGRectOffset(finalFrame, 0, screenBounds.size.height);
[containerView addSubview:toViewController.view];
NSTimeInterval duration = [self transitionDuration:transitionContext];
[UIView animateWithDuration:duration delay:0.0 usingSpringWithDamping:0.6 initialSpringVelocity:0.0 options:UIViewAnimationOptionCurveLinear animations:^{
toViewController.view.frame = finalFrame;
} completion:^(BOOL finished) {
[transitionContext completeTransition:YES];
}];
}
更新:有人解决了这个问题。但很hacky。将 toViewController.view 添加到 containerView 后添加此代码。
if ([toViewController isKindOfClass:[UINavigationController class]]) {
UINavigationController* navigationController = (UINavigationController*) toViewController;
UINavigationBar* bar = navigationController.navigationBar;
CGRect frame = bar.frame;
bar.frame = CGRectMake(frame.origin.x, frame.origin.y + 20.0f, frame.size.width, frame.size.height);
}
有更好的方法吗?