[英]Zooming multiple subviews in an UIScrollView
How would I go about zooming multiple subviews of an UIScrollView simultaneously? 我将如何同时缩放UIScrollView的多个子视图? I have a UIScrollView inside another UIScrollView (with paging enabled) and inside the inner scrollview I have four UIImageViews.
我在另一个UIScrollView内有一个UIScrollView(启用了分页),在内部scrollview内有四个UIImageViews。 I would like for the zoom to persist when I scroll to the next page, thus displaying the next image.
我希望缩放在滚动到下一页时保持不变,从而显示下一张图像。
Relevant code follows: 相关代码如下:
- (UIView *)viewForZoomingInScrollView:(UIScrollView *)scrollView
{
return self.page2;
}
+(void)updateScale:(CGFloat)newScale{
currentScale = newScale;
}
+(CGFloat)getScale{
return currentScale;
}
from the outer, paging enabled, scroll view and 从外部,启用分页,滚动视图和
- (UIView *)viewForZoomingInScrollView:(UIScrollView *)scrollView
{
return imageView;
}
-(void)scrollViewDidEndZooming:(UIScrollView *)scrollView withView:(UIView *)view atScale:(float)scale{
[PhotoViewController updateScale:scale];
NSLog(@"New scale set to %01f", scale);
NSLog(@"This should be equal to %01f", [PhotoViewController getScale]);
}
from the inner scrollview. 从内部滚动视图。
currentScale is updated correctly according to the log output, but when I call [page setZoomScale:[PhotoViewController getScale]];
currentScale根据日志输出正确更新,但是当我调用
[page setZoomScale:[PhotoViewController getScale]];
for the updated page
variable, nothing happens. 对于更新后的
page
变量,什么也没有发生。 page
is allocated and initialized correctly. page
已正确分配和初始化。
只需将所有图像视图放入一个空的UIView中,然后将该视图添加到滚动视图中即可。
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