Question

我已经注意到，在使用（Swift 4.0）的IOS X代码中，我至少可以通过以下两种方式要求视图的高度V：

Find.Execute

和...

Sub testRangesInArrays()
    Dim rngIAM_Code() As Range
    Dim rngIAM_Title() As Range

    rngIAM_Code = findRanges("You", ActiveDocument)
    rngIAM_Title = findRanges("change", ActiveDocument)
End Sub

Function findRanges(keyword As String, doc As Word.Document) As Range()
    Dim foundRanges() As Range, rngSearch As Range
    Dim i As Integer, foundCount As Integer

    i = 0
    foundCount = 0
    ReDim foundRanges(0)

    Set rngSearch = doc.content
    Do While rngSearch.Find.Execute(findText:=keyword, MatchWholeWord:=True, _
                       Forward:=True, wrap:=wdFindStop) = True
        Set foundRanges(i) = rngSearch.Duplicate
        ReDim Preserve foundRanges(UBound(foundRanges) + 1)
        i = i + 1
        rngSearch.Collapse Direction:=wdCollapseEnd
    Loop

    findRanges = foundRanges

End Function

这两者之间有什么实际区别吗？

我做了选项单击操作（给出了不同的定义，但是没有解释任何实际的区别或原因）和stackoverflow ...但是在这里，关于stackoverflow，所有结果都在讨论中边界和框架之间的区别...这不是我要问的。

Answer 1

V.bounds.height只是一个GET属性。您无法为此属性设置值。

示例：

self.view.bounds.height = 5

此错误消息导致...

无法分配给属性：“ height”是一个只能获取的属性

如果要为此属性分配一个值，则可以编写...

self.view.bounds.size.height = 5

因此您可以为该对象设置值。看看here.

Answer 2

差别很小。 view.bounds.height是一种快捷方式。您无法编辑它：

view.bounds.height = 150无效，但view.bounds.size.height = 150可用。

Answer 3

实际上V.bounds.size.height，高度都具有get-set属性，而在V.bounds.height中， height 只是getter属性，它总是返回您是矩形的高度。

对于吸气剂而言，两者是相同的。

Answer 4

In addition to the fact that view.bounds.height is readonly, there is another difference: if you have negative width/height, view.bounds.height will return you the normalized value (the positive one), while view.bounds.size.height will return the real value. These getters are the equivalent of the CGRectGetWidth() CGRectGetHeight() from Obj-C. All these getters from CGRect struct (widht, height, minX, minY...) are returning the normalized values of the CGRect's dimensions and they are recommended in case you want to use them in frame computations.

view.bounds.size.height -vs- view.bounds.height-有什么区别吗？

4 个答案: