Question

通过Pods导入DGElasticPullToRefresh Lib后，我的编译器崩溃了。它是由DGElasticPullToRefreshView.swift的这个函数引起的：

 override open func observeValue(forKeyPath keyPath: String?, of object: Any?, change: [NSKeyValueChangeKey : Any]?, context: UnsafeMutableRawPointer?) {
    if keyPath == DGElasticPullToRefreshConstants.KeyPaths.ContentOffset {
        if let newContentOffset = change?[NSKeyValueChangeKey.newKey], let scrollView = scrollView() {
            let newContentOffsetY = (newContentOffset as AnyObject).cgPointValue.y
            if state.isAnyOf([.loading, .animatingToStopped]) && newContentOffsetY < -scrollView.contentInset.top {
                scrollView.contentOffset.y = -scrollView.contentInset.top
            } else {
                scrollViewDidChangeContentOffset(dragging: scrollView.isDragging)
            }
            layoutSubviews()
        }
    } else if keyPath == DGElasticPullToRefreshConstants.KeyPaths.ContentInset {
        if let newContentInset = change?[NSKeyValueChangeKey.newKey] {
            let newContentInsetTop = (newContentInset as AnyObject).uiEdgeInsetsValue.top
            originalContentInsetTop = newContentInsetTop
        }
    } else if keyPath == DGElasticPullToRefreshConstants.KeyPaths.Frame {
        layoutSubviews()
    } else if keyPath == DGElasticPullToRefreshConstants.KeyPaths.PanGestureRecognizerState {
        if let gestureState = scrollView()?.panGestureRecognizer.state, gestureState.dg_isAnyOf([.ended, .cancelled, .failed]) {
            scrollViewDidChangeContentOffset(dragging: false)
        }
    }
}

根据这篇文章：https://stackoverflow.com/a/41043678/6003494我可以识别导致错误的行。它是第二个if子句中的这一行：

let newContentInsetTop = (newContentInset as AnyObject).uiEdgeInsetsValue.top

任何人都知道如何解决这个问题？感谢。

Answer 1

我可以在测试2小时后修复它：我不得不将类型转换为NSValue：

由此：

let newContentInsetTop = (newContentInset as AnyObject).uiEdgeInsetsValue.top

到此：

let newContentInsetTop = (newContentInset as! NSValue).uiEdgeInsetsValue.top

DGElasticPullToRefresh - 由于信号导致命令失败：分段错误：11

1 个答案: