UIScrollview涉及开始，触摸移动，触摸行动 [英] UIScrollview touchesbegan,touchesmoved,touchesended actions

问题描述

我在UIView中做了这个触摸动作，即在uiview中有
，有两个或三个子视图v1，v2，v3。我使用下面的代码将图像i1，i2，i3放在相应的视图中，如果我移动触摸，图像会移动到视图中的那个点。

I did this touch actions in UIView, ie, in a uiview there are two or three subviews v1,v2,v3. I used the code below to place the image i1,i2,i3 in corresponding views and if I moves the touch the images move to that point in the view.

- (void)touchesBegan:(NSSet *)touches withEvent:(UIEvent *)event {
    UITouch *touch = [touches anyObject];
    if ([touch view] == v1)
    {
        CGPoint location = [touch locationInView:v1];
        i1.center = location;
    }
        else if([touch view] == v2)
    {
        CGPoint location = [touch locationInView:v2];
        i2.center = location;
    }
}
- (void)touchesMoved:(NSSet *)touches withEvent:(UIEvent *)event {
    UITouch *touch = [touches anyObject];
    if ([touch view] == v1)
    {
        CGPoint location = [touch locationInView:v1];
        i1.center = location;
    }
        else if([touch view] == v2)
    {
        CGPoint location = [touch locationInView:v1];
        i2.center = location;
    }
}

现在我必须为28的序列执行此操作图像，所以我去Uiscrollview，但我不能得到，请用代码清楚地解释我。非常感谢您的帮助。

Now I have to do this for a sequence of 28 images so I went for Uiscrollview but I cant get that please explain me clearly with code. thanks a lot in advance for your help.

推荐答案

您需要将UIScrollView子类化以获取UIScrollView的触摸事件。

You need to subclass UIScrollView to get touch events of UIScrollView.

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