关于iOS7中UIView效果失效问题的解决
近期想做一个跑马灯的效果,于是写出了如下的跑马灯效果的代码。。。但是调试发现,在iOS6下动画是可以执行的,但是在iOS7下动画并不执行,没有达到预期的效果。
[_scrollLabel sizeToFit]; CGRect frame = _scrollLabel.frame; frame.origin.x = 320; _scrollLabel.frame = frame; [UIView setAnimationsEnabled:YES]; [UIView beginAnimations:@"testAnimation" context:NULL]; [UIView setAnimationDuration:10.f]; [UIView setAnimationCurve:UIViewAnimationCurveLinear]; [UIView setAnimationDelegate:self]; [UIView setAnimationRepeatAutoreverses:NO]; [UIView setAnimationRepeatCount:999999]; frame = _scrollLabel.frame; frame.origin.x = -frame.size.width; NSLog(@"frame orgin:%f",frame.origin.x); _scrollLabel.frame = frame; [UIView commitAnimations];然后在网上查了各种资料,都没有解决。。。最终发现,我的这个视图控制器是present模态化视图,在iOS7下模态化出来的视图UIView就出现问题了。。。果断把present换成了push。。。但是push又达不到prensent的效果,于是又模仿present,在push视图中实现present动画。代码如下:
一、push
MCLotteryListViewController *list = [[MCLotteryListViewController alloc]init]; //list.modalTransitionStyle = UIModalTransitionStyleCrossDissolve; // [self presentViewController:list animated:YES completion:^{ // // }]; [UIView beginAnimations:nil context:NULL]; [UIView setAnimationCurve:UIViewAnimationCurveEaseInOut]; [UIView setAnimationDuration:0.75]; [self.navigationController pushViewController:list animated:NO]; [UIView setAnimationTransition:UIViewAnimationTransitionCurlUp forView:self.navigationController.view cache:NO]; [UIView commitAnimations];二、pop
[UIView beginAnimations:nil context:NULL]; [UIView setAnimationCurve:UIViewAnimationCurveEaseInOut]; [UIView setAnimationDuration:0.75]; [UIView setAnimationTransition:UIViewAnimationTransitionCurlDown forView:self.navigationController.view cache:NO]; [UIView commitAnimations]; [UIView beginAnimations:nil context:NULL]; [UIView setAnimationDelay:0.375]; [self.navigationController popViewControllerAnimated:NO]; [UIView commitAnimations];转载请注明,错误请指正!
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