iphone - 如何在 `UIScrollview` 中提供翻页效果？

Question

我正在开发一个使用 UIScrollview 的应用程序，因为我需要使用页面翻转效果。

如何在UIScrollview中赋予页面翻转效果？

注意:在UIScrollview中，当我们改变Page时，向前和向后滚动Page。是否可以在滚动页面的同时赋予页面滚动效果？

Answer 1

向前翻转 -

CATransition *animation = [CATransition animation];
[animation setDelegate:self];
[animation setDuration:1.0f];
animation.startProgress = 0;
animation.endProgress   = 1;
[animation setTimingFunction:[CAMediaTimingFunction functionWithName:kCAMediaTimingFunctionEaseInEaseOut]];
animation.type = @"pageCurl";
animation.subtype=@"fromRight";
animation.fillMode = kCAFillModeForwards;

[animation setRemovedOnCompletion:NO];
[animation setFillMode: @"extended"];
[animation setRemovedOnCompletion: NO];
[lyr addAnimation:animation forKey:@"WebPageCurl"];

向后翻转 -

CATransition *animation = [CATransition animation];
[animation setDelegate:self];
[animation setDuration:1.5f];
animation.startProgress = 0;
animation.endProgress   = 1;
[animation setTimingFunction:[CAMediaTimingFunction functionWithName:kCAMediaTimingFunctionEaseInEaseOut]];
animation.type = @"pageUnCurl";
animation.subtype=@"fromRight";
animation.fillMode = kCAFillModeBackwards;

[animation setRemovedOnCompletion:NO];
[animation setFillMode: @"extended"];
[animation setRemovedOnCompletion: NO];
[lyr addAnimation:animation forKey:@"WebPageCurl"]; 

您可以在 UIScrollView 委托(delegate)时使用此代码。