使用kCATransitionPush向上滑动UIView

Question

我试图让UIView向上滑动四分之一的页面以显示其下方的另一个视图(显示选项),然后向下滑动以覆盖这些选项.我无情地搜索过,但似乎无法找到我正在寻找的东西.我不想使用模态视图,因为我想在屏幕上保持顶视图.在下面的代码中,我有点工作,顶层向上滑动,但随后完全消失(淡出).

任何帮助是极大的赞赏!

谢谢.

HomeOptionsViewController *homeOptionsViewController  = [[HomeOptionsViewController  alloc] 
                      initWithNibName:@"HomeOptionsViewController" 
                      bundle:nil];
// get the view that's currently showing
UIView *currentView = self.view;
// get the the underlying UIWindow, or the view containing the current view
UIView *theWindow = [currentView superview];

UIView *newView = homeOptionsViewController.view; 
//newView.frame = CGRectMake(0,300, 320,140);
    newView.frame = CGRectMake(0,-10, 320,140);
// remove the current view and replace with myView1
//---[currentView removeFromSuperview];
[theWindow addSubview:newView];

theWindow.frame = CGRectMake(0,-110,320,200);

newView.frame = theWindow.bounds;
// set up an animation for the transition between the views

CATransition *animation = [CATransition animation];
[animation setDuration:0.5];
[animation setType:kCATransitionPush];
[animation setSubtype:kCATransitionFromTop];
[animation setTimingFunction:[CAMediaTimingFunction functionWithName:kCAMediaTimingFunctionEaseInEaseOut]];
//[theWindow setFrame:CGRectMake(0,200,320,300)];
[[theWindow layer] addAnimation:animation forKey:@"SwitchToView1"];

Answer 1

您不使用标准UIView动画的原因是什么？CATransitions 将完全改变视图，因为它应该是从一个视图到另一个视图的转换。

你尝试过这样的事情吗？您添加要从屏幕底部滑动的视图，然后为两个帧的变化设置动画。它创建了向上滑动的效果。

newView.frame = CGRectMake(0,416,320,140);
[theWindow addSubview:newView];
[UIView beginAnimations:@"SwitchToView1" context:nil];
[UIView setAnimationDuration:0.5];
theWindow.frame = CGRectOffset(theWindow.frame, 0, -140);
newView.frame = CGRectOffset(newView.frame, 0, -140);
[UIView commitAnimations];