UIScrollview涉及开始，触摸移动，触摸行动

Question

我在UIView中做了这个触摸操作，即 在uiview中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。

- (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个图像序列执行此操作，所以我选择了Uiscrollview，但我不能得到它，请用代码清楚地解释我。非常感谢您的帮助。

Answer 1

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