我需要创建某种可扩展且可折叠的UIView,并且无法支付第三方控件的费用。
这基本上是我希望它的表现方式:
在顶部应该有一个UIButton(或类似的),允许用户在展开和折叠之间切换。
展开后,我希望能够放置其他UIView(例如日历),当折叠时,周围的控件应该向上移动。
有没有人有任何想法如何实现这一点 - 这里的noob :(
答案 0 :(得分:7)
对一个ViewController进行子类化,并且你的按钮可以触发两个方法,如'collapse'和'expand',这可能会让你开始:你可以动态地为UIButtons分配新的选择器:
[button addTarget:self action:@selector(eventMethod:)
forControlEvents:UIControlEventTouchUpInside];
代码:
#define COLAPSED_HEIGHT 30
-(void)expand
{
CGRect s= [self getScrerenBoundsForCurrentOriantation];
CGRect f = self.view.frame;
f.origin.y =s.size.height-self.view.frame.size.height;
[UIView beginAnimations:@"expand" context:NULL];
[UIView setAnimationDelegate:self];
[UIView setAnimationDidStopSelector:@selector(animationFinished:finished:context:)];
self.view.frame=f;
//CHANGE YOUR EXPAND/COLLAPSE BUTTON HERE
[UIView commitAnimations];
self.thumbScrollerIsExpanded=YES;
}
-(void)collapseView
{
//re-factored so that this method can be called in ViewdidLoad
CGRect s= [self getScrerenBoundsForCurrentOriantation];
CGRect f = self.view.frame;
f.origin.y =(s.size.height-COLAPSED_HEIGHT);
self.view.frame = f;
self.thumbScrollerIsExpanded=NO; //thumbScrollerIsExpanded is a BOOL property
}
- (void)collapse
{
[UIView beginAnimations:@"collapse" context:NULL];
[UIView setAnimationDelegate:self];
[UIView setAnimationDidStopSelector:@selector(animationFinished:finished:context:)];
[self collapseView];
//CHANGE YOUR EXPAND/COLLAPSE BUTTON HERE
[UIView commitAnimations];
}
-(CGRect)getScrerenBoundsForCurrentOriantation
{
return [self getScrerenBoundsForOriantation:[[UIDevice currentDevice] orientation]];
}
-(CGRect)getScrerenBoundsForOriantation:(UIInterfaceOrientation)_orientation
{
UIScreen *screen = [UIScreen mainScreen];
CGRect fullScreenRect = screen.bounds; // always implicitly in Portrait orientation.
if (UIInterfaceOrientationIsLandscape(_orientation))
{
CGRect temp;
temp.size.width = fullScreenRect.size.height;
temp.size.height = fullScreenRect.size.width;
fullScreenRect = temp;
}
return fullScreenRect;
}
- (void)animationFinished:(NSString *)animationID finished:(BOOL)finished context:(void *)context
{
if ([animationID isEqualToString:@"expand"])
{
//example
}
else if ([animationID isEqualToString:@"collapse"])
{
//example
}
}
答案 1 :(得分:0)
您可以尝试在屏幕外添加UIView(以xib或编程方式),然后使用UIView动画将其滑入主要查看区域。
该按钮将具有IBAction,可以切换动画(滑入/滑出)。您可以将其滑出屏幕,然后将UIView的隐藏属性设置为true。当您回想起IBAction时,请检查视图的隐藏属性是否为真。如果是,你知道播放滑动的动画,如果没有,那么你就播放滑出的动画。