[英]How to animate View swap on simple View iPhone App?
Have a simple iPhone app with a single UIViewController and two Views in one xib. 有一个简单的iPhone应用程序,一个UIViewController和一个xib中的两个视图。
the first view is very simple with a button and upon button press the second more complex view is loaded via setting the view property on the controller. 使用按钮第一个视图非常简单,按下按钮后,通过在控制器上设置视图属性来加载第二个更复杂的视图。
what I would like is to animate the view swap (flip the views). 我想要的是动画视图交换(翻转视图)。
The samples I have seen all require having multiple view controllers and building a hierachy, but that would be overkill in this case, any suggestions? 我看到的样本都需要有多个视图控制器并构建一个层次结构,但在这种情况下,任何建议都是过度杀伤?
Make sure you declare IBOutlets for the two views in your view controller I am assuming that in your xib you have a 'container view' that occupies the whole screen, and two views of the same size that you add to this contatiner (one for each side of your 'flip'): 确保在视图控制器中为两个视图声明IBOutlets我假设你的xib中有一个占据整个屏幕的“容器视图”,以及你添加到这个contatiner的两个相同大小的视图(每个视图一个)你'翻转'的一面):
//Inside your .h:
IBOutlet UIView *firstView;
IBOutlet UIView *secondView;
Make sure on initial load you have the firstView show up: 确保在初始加载时显示第一个View:
-(void) viewDidLoad {
NSAssert(firstView && seconView, @"Whoops: Are first View and Second View Wired in IB?");
[self.view addSubview: firstView]; //Lets make sure that the first view is shown
[secondView removeFromSuperview]; //Lets make sure that the second View is not shown at first
}
Then you can wire up a button like this, make sure the button is wired to this metod in IB: 然后你可以连接这样一个按钮,确保按钮连接到IB中的这个metod:
-(IBAction) flipButtonPressed:(id) sender {
[UIView beginAnimations:nil context:NULL];
[UIView setAnimationDuration:0.5];
if ([firstView superview]) {
[UIView setAnimationTransition:UIViewAnimationTransitionFlipFromLeft forView:self.view cache:YES];
[firstView removeFromSuperview];
[self.view addSubview:secondView];
}
else if ([secondView superview]) {
[UIView setAnimationTransition:UIViewAnimationTransitionFlipFromRight forView:self.view cache:YES];
[secondView removeFromSuperview];
[self.view addSubview:firstView];
}
[UIView commitAnimations];
}
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