activate 动画 animation

最新推荐文章于 2023-09-01 21:31:12 发布

iteye_7514

最新推荐文章于 2023-09-01 21:31:12 发布

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本文介绍了一种在iOS应用中实现视图切换时的动态效果的方法。通过使用UIKit和Core Animation，可以创建平滑的过渡动画，如水平翻转效果，并实现视图放大和缩小的动画。这些技术能够提升用户体验，使应用程序界面更加生动有趣。

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View之间切换的动态效果设置：

SettingsController *settings = [[SettingsController alloc]initWithNibName:@"SettingsView" bundle:nil]; settings.modalTransitionStyle = UIModalTransitionStyleFlipHorizontal;//水平翻转 [self presentModalViewController:settings animated:YES]; [settings release];

- (IBAction) activate:(UIView*)view

{

CGContextRef context = UIGraphicsGetCurrentContext();

[UIView beginAnimations:nilcontext:context];

[UIView setAnimationCurve:UIViewAnimationCurveEaseInOut];

[UIView setAnimationDuration:CONST_animation_time];

[view setCenter:UpPointOfView(view)];

CABasicAnimation *scalingAnimation = (CABasicAnimation *)[view.layeranimationForKey:@"scaling"];

if (!scalingAnimation)

{

scalingAnimation = [CABasicAnimationanimationWithKeyPath:@"transform"];

scalingAnimation.repeatCount=1;

scalingAnimation.duration=CONST_animation_time;

scalingAnimation.autoreverses=NO;

scalingAnimation.timingFunction = [CAMediaTimingFunctionfunctionWithName:kCAMediaTimingFunctionEaseOut];

scalingAnimation.fromValue=[NSValuevalueWithCATransform3D:CATransform3DMakeScale(1.0,1.0, 1.0)];

scalingAnimation.toValue=[NSValuevalueWithCATransform3D:CATransform3DMakeScale(CONST_enlarge_proportion,CONST_enlarge_proportion, 1.0)];

}

[view.layer addAnimation:scalingAnimationforKey:@"scaling"];

view.layer.transform =CATransform3DMakeScale(CONST_enlarge_proportion,CONST_enlarge_proportion, 1.0);

[UIView commitAnimations];

}

- (IBAction) deactivate:(UIView*)view

{

CGContextRef context = UIGraphicsGetCurrentContext();

[UIView beginAnimations:nilcontext:context];

[UIView setAnimationCurve:UIViewAnimationCurveEaseInOut];

[UIView setAnimationDuration:CONST_animation_time];

[view setCenter:DownPointOfView(view)];

CABasicAnimation *scalingAnimation = (CABasicAnimation *)[view.layeranimationForKey:@"descaling"];

if (!scalingAnimation)

{

scalingAnimation = [CABasicAnimationanimationWithKeyPath:@"transform"];

scalingAnimation.repeatCount=1;

scalingAnimation.duration=CONST_animation_time;

scalingAnimation.autoreverses=NO;

scalingAnimation.timingFunction = [CAMediaTimingFunctionfunctionWithName:kCAMediaTimingFunctionEaseOut];

scalingAnimation.fromValue=[NSValuevalueWithCATransform3D:CATransform3DMakeScale(CONST_enlarge_proportion,CONST_enlarge_proportion, 1.0)];

scalingAnimation.toValue=[NSValuevalueWithCATransform3D:CATransform3DMakeScale(1.0,1.0, 1.0)];

}

[view.layer addAnimation:scalingAnimationforKey:@"descaling"];

view.layer.transform =CATransform3DMakeScale(1.0,1.0, 1.0);

[UIView commitAnimations];

}