Question

I want my image called bildfraga to be zoomable. It is placed in the scrollview called scroll. I am able to scroll the picture, but not zoom it.

在图像显示时,这是我的代码:

  bildfraga = [[UIImageView alloc] initWithImage:[UIImage imageNamed:@"dtk2.png"]];
scroll.contentSize = bildfraga.frame.size;
[scroll addSubview:bildfraga];
scroll.minimumZoomScale = 0.4;
scroll.maximumZoomScale = 4.0;
[scroll setZoomScale:scroll.minimumZoomScale];

- (UIView *)viewForZoomingInScrollView:(UIScrollView *)scroll{
return bildfraga;
 }

但是,当我试图建立这一关系时,我就犯了一个错误,说“使用未经申报的识别观点,ForZoomingInScrollView”。

提前感谢!

页: 1

Answer 1

这可能是问题。您在档案中是否添加了UIScrollViewDelegate?

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