swift 中的函数错误

Question

我正在尝试在此函数中调用 UIWebView，但出现错误。我怎样才能修复这个错误？有没有办法从它的函数中调用一个变量？我这样做的原因是因为我的 webViewDidFinishLoad 改变了我在 UIWebView 的高度。我正在尝试在其下方加载一个 UIImage。

func webViewDidFinishLoad (jobDescView : UIWebView){
        // Change the height dynamically of the UIWebView to match the html content
        var jobDescViewFrame: CGRect = jobDescView.frame
        jobDescViewFrame.size.height = 1
        jobDescView.frame = jobDescViewFrame
        var fittingSize: CGSize = (jobDescView.sizeThatFits(CGSizeZero))
        jobDescViewFrame.size = fittingSize
        // webViewFrame.size.width = 276; Making sure that the webView doesn't get wider than 276 px
        jobDescView.frame = jobDescViewFrame
        var jobDescViewHeight = jobDescView.frame.size.height

    }

    func bar2View (bar2View: UIImageView){
        var jobDescViewHeight = jobDescView.frame.size.height -->>ERROR unresolved identifier 'jobDescView'
    }

Answer 1

这与变量范围有关：

由于您的变量是在函数内部设置的，因此您无法从其他函数访问它。

将 var jobDescViewFrame 设置为 class 变量然后 jobDescViewFrame = jobDescView.frame

class MyClass : OptionalSuperClass, OptionalProtocol1 {
var jobDescViewHeight:CGFloat!

func webViewDidFinished(jobDescView:UIWebView){
    jobDescViewFrame = jobDescView.frame
}

func bar2View (bar2View: UIImageView){
    jobDescViewHeight = jobDescView.frame.size.height '
}

swift 中的函数错误

Function Error in swift

function

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