Question

我正在做一个具有引脚丢弃功能的模块。引脚[图像视图]被放置在可缩放的滚动视图上。缩放时，图像视图根据其中心位置移动。

我想以它的最低点来推动它。

- (void)scrollViewDidEndZooming:(UIScrollView *)scrollView withView:(UIView *)view atScale:(float)scale;
{
    zoomLevel=scale;
    for (SSSmartPinView *smartPinView in smartPinViewMutArray) {
        smartPinView.zoomScale = zoomLevel;
        smartPinView.parrentOffset = drawingScrollView.contentOffset;
        smartPinView.center = CGPointMake(([smartPinView.coresmartPin.xpoint floatValue]*zoomLevel),(([smartPinView.coresmartPin.ypoint floatValue]+(zoomLevel))*zoomLevel));



    }


}
- (void)scrollViewDidZoom:(UIScrollView *)scrollView{
    zoomLevel=scrollView.zoomScale;
    for (SSSmartPinView *smartPinView in smartPinViewMutArray){
        smartPinView.zoomScale = zoomLevel;
        smartPinView.parrentOffset = drawingScrollView.contentOffset;

      smartPinView.center = CGPointMake(([smartPinView.coresmartPin.xpoint floatValue]*zoomLevel),(([smartPinView.coresmartPin.ypoint floatValue]+(zoomLevel))*zoomLevel));


    }
}

Answer 1

您可以使用

设置锚点（旋转/缩放的中心点）

smartPinView.layer.anchorPoint = CGPointMake(0.5, 1.0);

请参阅anchorPoint属性

ios中的图像视图原点问题

1 个答案: