UIView 页面卷曲动画不适用于块

mco*_*ell 3 animation objective-c uiview uiviewanimation ios

我正在尝试将工作 UIView 动画转换为使用块。除了完成回调之外,我看不出它们有什么不同。有人可以澄清我可能遗漏的东西吗?

这按预期工作

[UIView beginAnimations:@"Curl" context:nil];
[UIView setAnimationDuration:.15];
[UIView setAnimationCurve:UIViewAnimationCurveEaseInOut];
[UIView setAnimationTransition:UIViewAnimationTransitionCurlUp forView:self.storyTextView cache:YES];
self.storyTextView.text = text;
[UIView commitAnimations];
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这确实改变了页面的文本,但不显示动画,这只是一个即时过渡。

UIViewAnimationOptions curl = UIViewAnimationOptionTransitionCurlUp;
[UIView animateWithDuration:.15 delay:0 options:(UIViewAnimationOptionCurveEaseInOut | curl) animations:^{
    self.storyTextView.text = text;
} completion:^(BOOL finished) {
    if (finished){
        // pass
    }
}];
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此外,delay块样式动画中的设置不会影响即时转换,它只是在延迟后运行完成块。

emb*_*emb 7

你会想尝试UIView一下transitionWithView

UIViewAnimationOptions curl = UIViewAnimationOptionTransitionCurlUp;
[UIView transitionWithView:self.view duration:0.15 options:(UIViewAnimationOptionCurveEaseInOut | curl) animations:^{
        self.storyTextView.text = text;
} completion:nil];
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