UIView高度未調整為UITableView標頭中的子視圖高度

Question

我有一個帶有標題視圖和自定義行的UITableView。 標題視圖的高度未正確調整為其子視圖的約束高度。

標頭視圖容器視圖具有受高度限制的以下子視圖：

• 視圖（此高度應計算為188，但改為128）
  • 地圖：UIImage（高度= 128）
  • 查看：UIView（高度= 60）

頁眉視圖的高度應按照情節提要中所示的“地圖高度+視圖高度= 128 + 60 = 188”進行計算。 但是，在模擬器中運行此命令會將標題視圖壓縮為128，如下所示：

進一步檢查顯示標題視圖的高度為128，而不是預期的188：

此外，“調試”區域顯示了一個約束沖突，該沖突表明標題視圖的高度正試圖變為128，這與其子視圖的高度沖突。 結果，它壓縮了地圖高度：

2015-11-27 16:58:46.415 MyApp[3387:52799] Unable to simultaneously satisfy constraints.
    Probably at least one of the constraints in the following list is one you don't want. 
    Try this: 
        (1) look at each constraint and try to figure out which you don't expect; 
        (2) find the code that added the unwanted constraint or constraints and fix it. 
    (Note: If you're seeing NSAutoresizingMaskLayoutConstraints that you don't understand, refer to the documentation for the UIView property translatesAutoresizingMaskIntoConstraints) 
(
    "<NSAutoresizingMaskLayoutConstraint:0x7fcb5acf1270 h=--& v=--& V:[UIView:0x7fcb5c246620(128)]>",
    "<NSLayoutConstraint:0x7fcb5c24c440 V:[Stop Details Container]-(0)-|   (Names: Stop Details Container:0x7fcb5c24c490, '|':UIView:0x7fcb5c246620 )>",
    "<NSLayoutConstraint:0x7fcb5c24c6f0 V:[Map]-(0)-[Stop Details Container]   (Names: Stop Details Container:0x7fcb5c24c490, Map:0x7fcb5c24aa10 )>",
    "<NSLayoutConstraint:0x7fcb5c24c830 V:|-(0)-[Map]   (Names: Map:0x7fcb5c24aa10, '|':UIView:0x7fcb5c246620 )>",
    "<NSLayoutConstraint:0x7fcb5c24c880 V:[Map(128)]   (Names: Map:0x7fcb5c24aa10 )>",
    "<NSLayoutConstraint:0x7fcb5c24c8d0 V:[Stop Details Container(60)]   (Names: Stop Details Container:0x7fcb5c24c490 )>"
)

Will attempt to recover by breaking constraint 
<NSLayoutConstraint:0x7fcb5c24c880 V:[Map(128)]   (Names: Map:0x7fcb5c24aa10 )>

Make a symbolic breakpoint at UIViewAlertForUnsatisfiableConstraints to catch this in the debugger.
The methods in the UIConstraintBasedLayoutDebugging category on UIView listed in <UIKit/UIView.h> may also be helpful.

如何使標題視圖的高度正確計算為其子視圖的高度？

Answer 1

為了強制tableViewHeader的高度，我必須使用文本編輯器在Storyboard文件中手動編輯height屬性，這可以解決問題。

這無疑是Xcode 7.1中的錯誤。