我有一个奇怪的问题。
我有基于导航的应用程序,带有两个UIViewControllers和Curl效果,用于在这些之间进行转换。
我添加到栏按钮并添加自定义操作:
-(IBAction)pushPage
{
NSLog(@"push page");
SecondViewController *secondView = [[SecondViewController alloc] initWithNibName:@"SecondViewController" bundle:nil];
[UIView beginAnimations:@"animation" context:nil];
[UIView setAnimationDuration:0.75];
[UIView setAnimationTransition:UIViewAnimationTransitionCurlUp forView:self.navigationController.view cache:NO];
[self.navigationController pushViewController:secondView animated:NO];
[UIView commitAnimations];
[secondView release];
}
在SecondView中,我有一个带动作的按钮:
-(IBAction)back
{
[imageAnimationIssueAppDelegate backPage];
}
AppDelegate中的方法backPage
:
-(void)backPage
{
NSLog(@"backPage");
[UIView beginAnimations:@"animation" context:nil];
[UIView setAnimationDuration:0.75];
[UIView setAnimationTransition:UIViewAnimationTransitionCurlDown forView:self.navigationController.view cache:NO];
[self.navigationController popToRootViewControllerAnimated:NO];
[UIView commitAnimations];
}
问题:
在RootView上我有UIImageView
动画:
- (void)viewDidLoad
{
[super viewDidLoad];
animImage.animationImages = [NSArray arrayWithObjects:
[UIImage imageNamed:@"1.png"],
[UIImage imageNamed:@"2.png"],
[UIImage imageNamed:@"3.png"],
[UIImage imageNamed:@"4.png"],
[UIImage imageNamed:@"3.png"],
[UIImage imageNamed:@"2.png"],
nil];
animImage.animationDuration = 0.5;
animImage.animationRepeatCount = 0;
}
我在viewDidAppear
开始:
- (void)viewDidAppear:(BOOL)animated
{
NSLog(@"First view - viewDidAppear");
[super viewDidAppear:animated];
[animImage startAnimating];
}
我在viewDidDisapear
中停止了它:
- (void)viewDidDisappear:(BOOL)animated
{
NSLog(@"First view - viewDidDisappear");
[super viewDidDisappear:animated];
[animImage stopAnimating];
}
当我从SecondView动画回来时停止了!但是[animImage isAnimating]
说YES
!
它无法在更新屏幕上启动 - 您可以单击底部的按钮并查看它!
是错误吗?
动画无需自定义过渡即可运行。
当我为推送或弹出视图设置animated:YES
时,动画可以在视图之间自定义转换。
为什么吗 有没有简单的方法来更新显示视图以开始动画?
答案 0 :(得分:1)
我认为你应该写
[yellowBatterfly startAnimating];
在viewDidLoad方法中。并改变方法
viewDidAppear to viewWillAppear和
viewDidDisappear to viewWillDisappear。
希望它会起作用......
答案 1 :(得分:0)
我认为你必须使用以下方法在视图上执行动画:
[UIView commitAnimations]