將大於iphone視圖的圖像添加到UIScrollView中

Question

如何將大於iphone視圖大小的圖像放大到UIScrollView？

我試圖添加圖像到UIImageView，仍然沒有連接到UIScrollView和圖像只是收縮，以適應UIImageView。

該結構如何設置？

感謝

Answer 1

你可能想要做這樣的事情：

- (void) resizeScrollContentView 
{ 
    CGSize viewSize = _imageView.frame.size; 
    CGSize scrollSize = _scroll.frame.size; 
    CGPoint p; 

    p.x = 0; 
    p.y = 0; 

    if(viewSize.width < 320) 
    { 
     p.x = 160 - (viewSize.width/2.0); 
    } 

    if(viewSize.height < 460) 
    { 
     p.y = 200 - (viewSize.height/2.0); 
    } 

    _imageView.frame = CGRectMake(p.x, p.y, _imageView.frame.size.width, _imageView.frame.size.height); 

    CGSize endScrollSize; 
    endScrollSize = _imageView.frame.size; 

    _scroll.contentSize = endScrollSize; 
} 
- (void)scrollViewDidEndZooming:(UIScrollView *)scrollView withView:(UIView *)view atScale:(float)scale 
{ 
    [self resizeScrollContentView]; 
} 

- (UIView *)viewForZoomingInScrollView:(UIScrollView *)scrollView 
{ 
    return _imageView; 
}