以编程方式将视图添加到NSStackView后,视图无法正确显示

Question

所以,我正在尝试向NSStackView添加一些视图(在此示例中为NSTextField):

我已将NSStackView实例添加到XIB文件中,并将其作为小部件链接到文档中.在... didLoadNib我这样做:

NSTextField *tf = [[NSTextField alloc] init];
tf.stringValue = @"124";
[tf setFrameSize:NSMakeSize(100, 20)];
[widgets addView:tf inGravity:NSStackViewGravityLeading];
NSLog(@"%f - %d", NSHeight(tf.frame), [tf hasAmbiguousLayout]);

NSTextField *tf2 = [[NSTextField alloc] init];
tf2.stringValue = @"123";
[tf2 setFrameSize:NSMakeSize(100, 20)];
[widgets addView:tf2 inGravity:NSStackViewGravityLeading];
NSLog(@"%f - %d", NSHeight(tf2.frame), [tf2 hasAmbiguousLayout]);

TextFields被放置在StackView中,但是它们被放置在相同的位置,即第二个完全重叠.我仍然可以先通过[space + tab]选择.

这是控制台输出:

2015-06-13 17:11:00.736 celty-test[62306:9217679] 20.000000 - 1
2015-06-13 17:11:00.739 celty-test[62306:9217679] Unable to simultaneously satisfy constraints:
(
    "<NSLayoutConstraint:0x608000084bf0 V:[NSStackViewSpacer:0x6080001834d0(>=8)]>",
    "<NSLayoutConstraint:0x608000084f10 V:[NSTextField:0x608000183330]-(0)-[NSStackViewSpacer:0x6080001834d0]>",
    "<NSLayoutConstraint:0x608000085460 V:[NSStackViewSpacer:0x6080001834d0]-(0)-[NSTextField:0x608000183400]>",
    "<NSAutoresizingMaskLayoutConstraint:0x608000084970 h=--& v=--& V:[NSTextField:0x608000183330]-(0)-|   (Names: '|':NSStackViewContainer:0x6000001a0700 )>",
    "<NSAutoresizingMaskLayoutConstraint:0x608000084d30 h=--& v=--& V:[NSTextField:0x608000183400]-(0)-|   (Names: '|':NSStackViewContainer:0x6000001a0700 )>",
    "<NSAutoresizingMaskLayoutConstraint:0x608000084d80 h=--& v=--& V:[NSTextField:0x608000183400(20)]>"
)

Will attempt to recover by breaking constraint 
<NSLayoutConstraint:0x608000084bf0 V:[NSStackViewSpacer:0x6080001834d0(>=8)]>

Set the NSUserDefault NSConstraintBasedLayoutVisualizeMutuallyExclusiveConstraints to YES to have -[NSWindow visualizeConstraints:] automatically called when this happens.  And/or, break on objc_exception_throw to catch this in the debugger.
2015-06-13 17:11:00.802 celty-test[62306:9217679] Unable to simultaneously satisfy constraints:
(
    "<NSLayoutConstraint:0x608000084f10 V:[NSTextField:0x608000183330]-(0)-[NSStackViewSpacer:0x6080001834d0]>",
    "<NSLayoutConstraint:0x608000085460 V:[NSStackViewSpacer:0x6080001834d0]-(0)-[NSTextField:0x608000183400]>",
    "<NSAutoresizingMaskLayoutConstraint:0x608000084970 h=--& v=--& V:[NSTextField:0x608000183330]-(0)-|   (Names: '|':NSStackViewContainer:0x6000001a0700 )>",
    "<NSAutoresizingMaskLayoutConstraint:0x608000084d30 h=--& v=--& V:[NSTextField:0x608000183400]-(0)-|   (Names: '|':NSStackViewContainer:0x6000001a0700 )>",
    "<NSAutoresizingMaskLayoutConstraint:0x608000084d80 h=--& v=--& V:[NSTextField:0x608000183400(20)]>"
)

Will attempt to recover by breaking constraint 
<NSLayoutConstraint:0x608000085460 V:[NSStackViewSpacer:0x6080001834d0]-(0)-[NSTextField:0x608000183400]>

Set the NSUserDefault NSConstraintBasedLayoutVisualizeMutuallyExclusiveConstraints to YES to have -[NSWindow visualizeConstraints:] automatically called when this happens.  And/or, break on objc_exception_throw to catch this in the debugger.
2015-06-13 17:11:00.814 celty-test[62306:9217679] 20.000000 - 0

XIB和结果截图:

StackView没有添加任何约束.StackView应该是垂直的.将向stackview添加动态数量的文本字段.

Answer 1

您需要translatesAutoresizingMaskIntoConstraints将文本字段的属性设置为false.

通常,如果视图由其他代码放置,则不应执行此操作.也就是说,您可以期望堆栈视图决定是否应该打开或关闭该属性,因为它可以控制将其放入视图层次结构中.但是,就NSStackView10.10这个问题而言,存在一个错误,所以你必须自己解决这个问题.

线索是一组不可满足的约束包括类型的约束NSAutoresizingMaskLayoutConstraint.