使用Flutter Channel stable, 2.0.1，在iPad物理设备iOS 14.4上，每次点击任何TextFormField时，我都会收到以下控制台消息。
[LayoutConstraints] 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:0x281871540 h=--& v=--& _UIButtonBarButton:0x109a86990.height == 0 (active)>",
"<NSLayoutConstraint:0x28185d950 _UIUCBKBSelectionBackground:0x109b2ddf0.bottom == _UIButtonBarButton:0x109a86990.bottom - 6 (active)>",
"<NSLayoutConstraint:0x28185d770 V:|-(6)-[_UIUCBKBSelectionBackground:0x109b2ddf0] (active, names: '|':_UIButtonBarButton:0x109a86990 )>"
)
Will attempt to recover by breaking constraint
<NSLayoutConstraint:0x28185d950 _UIUCBKBSelectionBackground:0x109b2ddf0.bottom == _UIButtonBarButton:0x109a86990.bottom - 6 (active)>
Make a symbolic breakpoint at UIViewAlertForUnsatisfiableConstraints to catch this in the debugger.
The methods in the UIConstraintBasedLayoutDebugging category on UIView listed in <UIKitCore/UIView.h> may also be helpful.
[LayoutConstraints] 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:0x281870e10 h=--& v=--& _UIButtonBarButton:0x11c9411b0.height == 0 (active)>",
"<NSLayoutConstraint:0x2818705f0 _UIUCBKBSelectionBackground:0x109c5a3b0.bottom == _UIButtonBarButton:0x11c9411b0.bottom - 6 (active)>",
"<NSLayoutConstraint:0x281871130 V:|-(6)-[_UIUCBKBSelectionBackground:0x109c5a3b0] (active, names: '|':_UIButtonBarButton:0x11c9411b0 )>"
)
Will attempt to recover by breaking constraint
<NSLayoutConstraint:0x2818705f0 _UIUCBKBSelectionBackground:0x109c5a3b0.bottom == _UIButtonBarButton:0x11c9411b0.bottom - 6 (active)>
Make a symbolic breakpoint at UIViewAlertForUnsatisfiableConstraints to catch this in the debugger.
The methods in the UIConstraintBasedLayoutDebugging category on UIView listed in <UIKitCore/UIView.h> may also be helpful.
[LayoutConstraints] 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:0x281873ca0 h=--& v=--& _UIButtonBarButton:0x109ca0d90.height == 0 (active)>",
"<NSLayoutConstraint:0x281871040 V:|-(6)-[_UIUCBKBSelectionBackground:0x109ca0f60] (active, names: '|':_UIButtonBarButton:0x109ca0d90 )>",
"<NSLayoutConstraint:0x2818714a0 _UIUCBKBSelectionBackground:0x109ca0f60.bottom == _UIButtonBarButton:0x109ca0d90.bottom - 6 (active)>"
)
Will attempt to recover by breaking constraint
<NSLayoutConstraint:0x2818714a0 _UIUCBKBSelectionBackground:0x109ca0f60.bottom == _UIButtonBarButton:0x109ca0d90.bottom - 6 (active)>
Make a symbolic breakpoint at UIViewAlertForUnsatisfiableConstraints to catch this in the debugger.
The methods in the UIConstraintBasedLayoutDebugging category on UIView listed in <UIKitCore/UIView.h> may also be helpful.
[LayoutConstraints] 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:0x2818702d0 h=--& v=--& _UIButtonBarButton:0x126929f40.height == 0 (active)>",
"<NSLayoutConstraint:0x28185f9d0 V:|-(6)-[_UIUCBKBSelectionBackground:0x12692af20] (active, names: '|':_UIButtonBarButton:0x126929f40 )>",
"<NSLayoutConstraint:0x28185f700 _UIUCBKBSelectionBackground:0x12692af20.bottom == _UIButtonBarButton:0x126929f40.bottom - 6 (active)>"
)
Will attempt to recover by breaking constraint
<NSLayoutConstraint:0x28185f700 _UIUCBKBSelectionBackground:0x12692af20.bottom == _UIButtonBarButton:0x126929f40.bottom - 6 (active)>
Make a symbolic breakpoint at UIViewAlertForUnsatisfiableConstraints to catch this in the debugger.
The methods in the UIConstraintBasedLayoutDebugging category on UIView listed in <UIKitCore/UIView.h> may also be helpful.
[LayoutConstraints] 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:0x281851590 h=--& v=--& _UIButtonBarButton:0x109c45d70.height == 0 (active)>",
"<NSLayoutConstraint:0x281850c30 V:|-(6)-[_UIUCBKBSelectionBackground:0x109c56fb0] (active, names: '|':_UIButtonBarButton:0x109c45d70 )>",
"<NSLayoutConstraint:0x281850cd0 _UIUCBKBSelectionBackground:0x109c56fb0.bottom == _UIButtonBarButton:0x109c45d70.bottom - 6 (active)>"
)
Will attempt to recover by breaking constraint
<NSLayoutConstraint:0x281850cd0 _UIUCBKBSelectionBackground:0x109c56fb0.bottom == _UIButtonBarButton:0x109c45d70.bottom - 6 (active)>
Make a symbolic breakpoint at UIViewAlertForUnsatisfiableConstraints to catch this in the debugger.
The methods in the UIConstraintBasedLayoutDebugging category on UIView listed in <UIKitCore/UIView.h> may also be helpful.
[LayoutConstraints] 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:0x281851a40 h=--& v=--& _UIButtonBarButton:0x109c8f2a0.height == 0 (active)>",
"<NSLayoutConstraint:0x281850f00 V:|-(6)-[_UIUCBKBSelectionBackground:0x109c567b0] (active, names: '|':_UIButtonBarButton:0x109c8f2a0 )>",
"<NSLayoutConstraint:0x281850fa0 _UIUCBKBSelectionBackground:0x109c567b0.bottom == _UIButtonBarButton:0x109c8f2a0.bottom - 6 (active)>"
)
Will attempt to recover by breaking constraint
<NSLayoutConstraint:0x281850fa0 _UIUCBKBSelectionBackground:0x109c567b0.bottom == _UIButtonBarButton:0x109c8f2a0.bottom - 6 (active)>
Make a symbolic breakpoint at UIViewAlertForUnsatisfiableConstraints to catch this in the debugger.
The methods in the UIConstraintBasedLayoutDebugging category on UIView listed in <UIKitCore/UIView.h> may also be helpful.
[LayoutConstraints] 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:0x281852710 h=--& v=--& _UIButtonBarButton:0x109c3c760.height == 0 (active)>",
"<NSLayoutConstraint:0x281851e00 V:|-(6)-[_UIUCBKBSelectionBackground:0x109c3cde0] (active, names: '|':_UIButtonBarButton:0x109c3c760 )>",
"<NSLayoutConstraint:0x281851ea0 _UIUCBKBSelectionBackground:0x109c3cde0.bottom == _UIButtonBarButton:0x109c3c760.bottom - 6 (active)>"
)
Will attempt to recover by breaking constraint
<NSLayoutConstraint:0x281851ea0 _UIUCBKBSelectionBackground:0x109c3cde0.bottom == _UIButtonBarButton:0x109c3c760.bottom - 6 (active)>
Make a symbolic breakpoint at UIViewAlertForUnsatisfiableConstraints to catch this in the debugger.
The methods in the UIConstraintBasedLayoutDebugging category on UIView listed in <UIKitCore/UIView.h> may also be helpful.
[LayoutConstraints] 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:0x28185c1e0 h=--& v=--& _UIButtonBarButton:0x109c3cf60.height == 0 (active)>",
"<NSLayoutConstraint:0x2818520d0 V:|-(6)-[_UIUCBKBSelectionBackground:0x109ca5eb0] (active, names: '|':_UIButtonBarButton:0x109c3cf60 )>",
"<NSLayoutConstraint:0x281852170 _UIUCBKBSelectionBackground:0x109ca5eb0.bottom == _UIButtonBarButton:0x109c3cf60.bottom - 6 (active)>"
)
Will attempt to recover by breaking constraint
<NSLayoutConstraint:0x281852170 _UIUCBKBSelectionBackground:0x109ca5eb0.bottom == _UIButtonBarButton:0x109c3cf60.bottom - 6 (active)>
Make a symbolic breakpoint at UIViewAlertForUnsatisfiableConstraints to catch this in the debugger.
The methods in the UIConstraintBasedLayoutDebugging category on UIView listed in <UIKitCore/UIView.h> may also be helpful.
文本字段上的onTap只会将焦点放在字段上(键盘出现(，但不会更改视图中的任何内容。
我读到，对一些人来说，这条消息可以忽略，但对一些人而言，应用程序更新已被苹果公司取消。
我们如何解决这个约束问题？
在Form((小部件中使用键属性时似乎有一个错误。GlobalKey<FormState>()
也可能是您的Container/Widget与键盘发生冲突。如果IOS导致不稳定的行为，它会破坏屏幕对象的约束。
试着移除你的集装箱(高度和宽度(限制。这对我有效。
这是一个Flutter和/或内部Apple Bug(在我看来(。。。它似乎来自键盘上的自动更正选项。设置autocorrect：false，在大多数情况下，您可以避免错误，但它并不完整。
如果你在一个窗体上向后移动，点击上一个窗体字段，它似乎仍然会触发。
它似乎不会影响用户性能，但最好还是避免。