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[英]Why subview keep sticking to bottom and not adjusting according to parent UIView height
[英]UIView height not adjusting to subview heights in UITableView header
我有一个带有标题视图和自定义行的UITableView。 标题视图的高度未正确调整为其子视图的约束高度。
标头视图容器视图具有受高度限制的以下子视图:
页眉视图的高度应按照情节提要中所示的“地图高度+视图高度= 128 + 60 = 188”进行计算。 但是,在模拟器中运行此命令会将标题视图压缩为128,如下所示:
进一步检查显示标题视图的高度为128,而不是预期的188:
此外,“调试”区域显示了一个约束冲突,该冲突表明标题视图的高度正试图变为128,这与其子视图的高度冲突。 结果,它压缩了地图高度:
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.
如何使标题视图的高度正确计算为其子视图的高度?
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