How do I deal with such effect? Like the picture

[xhzengAIB]

Hi! @kevinkirkup
can you help me？

picture：

Jack

[kevinkirkup]

Hi @xhzengAIB.
Can you provide a little more information?
And a sample project would be helpful if that's possible.

Does this always happen?

[kevinkirkup]

In your View Controller, can you print out the current value?
Looks like printing the value was left off in the example. Use this:

#pragma mark - UIScrollViewDelegate

- (void)scrollViewDidEndDecelerating:(UIScrollView *)scrollView
{    
    NSLog(@"scrollViewDidEndDecelerating: %i", _dialView.currentValue);
}

- (void)scrollViewWillBeginDragging:(UIScrollView *)scrollView
{
    NSLog(@"scrollViewWillBeginDragging: %i", _dialView.currentValue);
}

The output should look like this in the log:

2014-03-05 20:32:56.969 DialViewExample[9114:70b] scrollViewWillBeginDragging: 0
2014-03-05 20:32:57.069 DialViewExample[9114:70b] starting=247.500000, ending=240.000000
2014-03-05 20:32:58.872 DialViewExample[9114:70b] scrollViewDidEndDecelerating: 15

Can you post the log output?

[xhzengAIB]

@kevinkirkup
Hi!
I want to take advantage of your library, instead of a angle selector.
this picture screenshots for Instagram App， not my demo, I'm very sorry, my English because I am a Chinese.
Jack

[kevinkirkup]

@xhzengAIB
Can you post your question in Chinese and I can try to ask someone at work to translate.

[xhzengAIB]

@kevinkirkup
谢谢你的支持，我想要这样的效果：
1、一个能限制在一定范围内角度的刻度盘，比如：-25度到25度，我会利用这些值来改变图片的旋转角度
2、刻度盘不支持快速滚动，我觉得应该是利用的KVO设置了ScrollView的contenoffset,所以每次滑动的距离都是很小，比如滑动了1度。

[hugepuff]

@kevinkirkup
Thanks for your support, I want the effect like this:
1.The dial(ScrollView) can be limited to certain value, such as -25 degree to 25 degree. I want to use those value to change the rotation angle of pictures.
2.The dial didn't support "fast forward". I think you probably use KVO to set contenoffset to the ScrollView. So each swipe will only move one degree, which is too small.