iPhone iOS如何翻转/反映任何UIView就位? [英] iPhone iOS how to flip/reflect any UIView in - place?
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问题描述
我知道如何通过在UIImage的范围内重新绘制它来翻转/反射/旋转它。
I know how to flip/reflect/rotate a UIImage by re-drawing it within it's bounds.
- (IBAction)reflectImageView:(UIImageView)imageView {
UIGraphicsBeginImageContextWithOptions(imageView.bounds.size, NO, 0.0);
CGContextRef context = UIGraphicsGetCurrentContext();
CGContextScaleCTM(context, 1.0, -1.0);
CGContextTranslateCTM(context, 0.0, -imageView.bounds.size.height);
[imageView.layer renderInContext:context];
imageView.image = UIGraphicsGetImageFromCurrentImageContext();
UIGraphicsEndImageContext();
}
但我如何创建翻转/反射效果对于任何UIView,最好保持它的中心位置和以前一样?
But how do I create a "flip/reflect" effect for any UIView, preferably keeping it's center in the same position as before?
谢谢!
推荐答案
[UIView beginAnimations:nil context:nil];
[UIView setAnimationDuration:0.75];
[UIView setAnimationDelegate:self];
[UIView setAnimationTransition:UIViewAnimationTransitionFlipFromRight forView:self.activeView cache:YES];
// [self.activeView removeFromSuperview];
[UIView commitAnimations];
NSNumber* isReflected = [self.activeView.attributedView.attributes valueForKey:kIsReflected];
if(isReflected.boolValue)
{
self.activeView.transform = CGAffineTransformMakeScale(1,1);
[self.activeView.attributedView.attributes setValue: [NSNumber numberWithBool:NO] forKey:kIsReflected];
}else {
//do reflection
self.activeView.transform = CGAffineTransformMakeScale(-1,1);
[self.activeView.attributedView.attributes setValue: [NSNumber numberWithBool:YES] forKey:kIsReflected];
}
以上代码用于UIView动画。您将获得各种类型动画的选项。
Above code is used for UIView Animation. Where you will get an options for various type animation.
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