我必须在开始时设置UIScrollView
0.28 scale
(当前比例)。我怎么能这样做呢?
现在缩放我正在使用这种方法:
#pragma mark - UIScrollViewDelegate Methods
-(UIView *)viewForZoomingInScrollView:(UIScrollView *)scrollView {
return imageView;
}
-(void)scrollViewDidZoom:(UIScrollView *)scrollView {
[self centerScrollViewContent];
}
-(void)scrollViewDidEndZooming:(UIScrollView *)scrollView withView:(UIView *)view atScale:(float)scale {
}
- (void)centerScrollViewContent {
CGSize boundsSize = self.scrollView.bounds.size;
CGRect contentsFrame = imageView.frame;
if (contentsFrame.size.width < boundsSize.width) {
contentsFrame.origin.x = (boundsSize.width - contentsFrame.size.width) / 2.0f;
} else {
contentsFrame.origin.x = 0.0f;
}
if (contentsFrame.size.height < boundsSize.height) {
contentsFrame.origin.y = (boundsSize.height - contentsFrame.size.height) / 2.0f;
} else {
contentsFrame.origin.y = 0.0f;
}
imageView.frame = contentsFrame;
}
答案 0 :(得分:1)
加载了您的scrollView内容后,您可以设置缩放比例:
self.scrollView.zoomScale = 0.28;