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How do I convert constraints's toItem or Item from viewA to viewB? I am getting this error: Unknown layout attribute
How to call Objective-C code from SwiftDownload data and display itSwift UIAlertController causing Autolayout Engine warningUITabBarItem action giving NSExceptionUIKit UIViewReportBrokenSuperviewChain exceptionCrashing app in XcodeNot able to Switch between View controllers ProgramaticallyUnrecognized selector sent to instance 0x7f995be07650Error in Swift Code?Getting UITableView error “unable to dequeue a cell with identifier cell”
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0
As title, I have the viewParent which has viewA,
but viewA will be replaced by viewB within method awakeAfter.
I wanna convert all of constraints
from viewParent <-> viewA,
to viewParent <-> viewB.
Thanks a lots.
Here is my code:
private func convertConstraints(from: UIView, to: UIView)
from.constraints.forEach (constraint: NSLayoutConstraint) in
let isFirst = (constraint.firstItem as? UIView) == from
let isSecond = (constraint.secondItem as? UIView) == from
let first: Any = (isFirst) ? to : constraint.firstItem as Any
let second: Any? = (isSecond) ? to : constraint.secondItem as? Any
let new = NSLayoutConstraint(item: first,
attribute: constraint.firstAttribute,
relatedBy: constraint.relation,
toItem: second,
attribute: constraint.secondAttribute,
multiplier: constraint.multiplier,
constant: constraint.constant)
new.priority = constraint.priority
new.identifier = constraint.identifier
new.shouldBeArchived = constraint.shouldBeArchived
new.isActive = constraint.isActive
And console log is below:
2019-03-27 15:36:33.740004+0800 Cale[86571:50392102] *** Terminating app due to uncaught exception 'NSInvalidArgumentException', reason: 'NSLayoutConstraint for <Cale.AirportButton: 0x7f9eb454d990; baseClass = UIButton; frame = (0 129; 120 120); autoresize = RM+BM; layer = <CALayer: 0x600003936460>>: Unknown layout attribute'
*** First throw call stack:
(
0 CoreFoundation 0x000000010bf501bb __exceptionPreprocess + 331
1 libobjc.A.dylib 0x000000010b4ee735 objc_exception_throw + 48
2 CoreFoundation 0x000000010bf50015 +[NSException raise:format:] + 197
3 Foundation 0x000000010a16cf61 ResolveConstraintArguments + 372
4 Foundation 0x000000010a16d2cb +[NSLayoutConstraint constraintWithItem:attribute:relatedBy:toItem:attribute:multiplier:constant:] + 80
.
.
.
swift
edited Mar 27 at 8:44
Chitra Khatri
9751 gold badge12 silver badges30 bronze badges
asked Mar 27 at 7:45
WeiWei
417 bronze badges
add a comment |
0
As title, I have the viewParent which has viewA,
but viewA will be replaced by viewB within method awakeAfter.
I wanna convert all of constraints
from viewParent <-> viewA,
to viewParent <-> viewB.
Thanks a lots.
Here is my code:
private func convertConstraints(from: UIView, to: UIView)
from.constraints.forEach (constraint: NSLayoutConstraint) in
let isFirst = (constraint.firstItem as? UIView) == from
let isSecond = (constraint.secondItem as? UIView) == from
let first: Any = (isFirst) ? to : constraint.firstItem as Any
let second: Any? = (isSecond) ? to : constraint.secondItem as? Any
let new = NSLayoutConstraint(item: first,
attribute: constraint.firstAttribute,
relatedBy: constraint.relation,
toItem: second,
attribute: constraint.secondAttribute,
multiplier: constraint.multiplier,
constant: constraint.constant)
new.priority = constraint.priority
new.identifier = constraint.identifier
new.shouldBeArchived = constraint.shouldBeArchived
new.isActive = constraint.isActive
And console log is below:
2019-03-27 15:36:33.740004+0800 Cale[86571:50392102] *** Terminating app due to uncaught exception 'NSInvalidArgumentException', reason: 'NSLayoutConstraint for <Cale.AirportButton: 0x7f9eb454d990; baseClass = UIButton; frame = (0 129; 120 120); autoresize = RM+BM; layer = <CALayer: 0x600003936460>>: Unknown layout attribute'
*** First throw call stack:
(
0 CoreFoundation 0x000000010bf501bb __exceptionPreprocess + 331
1 libobjc.A.dylib 0x000000010b4ee735 objc_exception_throw + 48
2 CoreFoundation 0x000000010bf50015 +[NSException raise:format:] + 197
3 Foundation 0x000000010a16cf61 ResolveConstraintArguments + 372
4 Foundation 0x000000010a16d2cb +[NSLayoutConstraint constraintWithItem:attribute:relatedBy:toItem:attribute:multiplier:constant:] + 80
.
.
.
swift
edited Mar 27 at 8:44
Chitra Khatri
9751 gold badge12 silver badges30 bronze badges
asked Mar 27 at 7:45
WeiWei
417 bronze badges
Why don't you just remove the constraints and add them to the second view? make sure to add the constraints to the needed view after adding the view
– Sanad Barjawi
Mar 27 at 7:48
Instead of replacing the view. Create a container remove and add the required views from it.
– Sachin Vas
Mar 27 at 8:12
Because both of viewA which is initialized from code and viewB is loaded from Nib are the same class. And yes, I can remove the constraints but I also need add same them to the second view like the method doing.
– Wei
Mar 27 at 8:15
I'm based on following link and trying to refactor it. Creating custom UI components in iOS with Swift
– Wei
Mar 27 at 8:17
add a comment |
0
0
0
As title, I have the viewParent which has viewA,
but viewA will be replaced by viewB within method awakeAfter.
I wanna convert all of constraints
from viewParent <-> viewA,
to viewParent <-> viewB.
Thanks a lots.
Here is my code:
private func convertConstraints(from: UIView, to: UIView)
from.constraints.forEach (constraint: NSLayoutConstraint) in
let isFirst = (constraint.firstItem as? UIView) == from
let isSecond = (constraint.secondItem as? UIView) == from
let first: Any = (isFirst) ? to : constraint.firstItem as Any
let second: Any? = (isSecond) ? to : constraint.secondItem as? Any
let new = NSLayoutConstraint(item: first,
attribute: constraint.firstAttribute,
relatedBy: constraint.relation,
toItem: second,
attribute: constraint.secondAttribute,
multiplier: constraint.multiplier,
constant: constraint.constant)
new.priority = constraint.priority
new.identifier = constraint.identifier
new.shouldBeArchived = constraint.shouldBeArchived
new.isActive = constraint.isActive
And console log is below:
2019-03-27 15:36:33.740004+0800 Cale[86571:50392102] *** Terminating app due to uncaught exception 'NSInvalidArgumentException', reason: 'NSLayoutConstraint for <Cale.AirportButton: 0x7f9eb454d990; baseClass = UIButton; frame = (0 129; 120 120); autoresize = RM+BM; layer = <CALayer: 0x600003936460>>: Unknown layout attribute'
*** First throw call stack:
(
0 CoreFoundation 0x000000010bf501bb __exceptionPreprocess + 331
1 libobjc.A.dylib 0x000000010b4ee735 objc_exception_throw + 48
2 CoreFoundation 0x000000010bf50015 +[NSException raise:format:] + 197
3 Foundation 0x000000010a16cf61 ResolveConstraintArguments + 372
4 Foundation 0x000000010a16d2cb +[NSLayoutConstraint constraintWithItem:attribute:relatedBy:toItem:attribute:multiplier:constant:] + 80
.
.
.
swift
edited Mar 27 at 8:44
Chitra Khatri
9751 gold badge12 silver badges30 bronze badges
asked Mar 27 at 7:45
WeiWei
417 bronze badges
As title, I have the viewParent which has viewA,
but viewA will be replaced by viewB within method awakeAfter.
I wanna convert all of constraints
from viewParent <-> viewA,
to viewParent <-> viewB.
Thanks a lots.
Here is my code:
private func convertConstraints(from: UIView, to: UIView)
from.constraints.forEach (constraint: NSLayoutConstraint) in
let isFirst = (constraint.firstItem as? UIView) == from
let isSecond = (constraint.secondItem as? UIView) == from
let first: Any = (isFirst) ? to : constraint.firstItem as Any
let second: Any? = (isSecond) ? to : constraint.secondItem as? Any
let new = NSLayoutConstraint(item: first,
attribute: constraint.firstAttribute,
relatedBy: constraint.relation,
toItem: second,
attribute: constraint.secondAttribute,
multiplier: constraint.multiplier,
constant: constraint.constant)
new.priority = constraint.priority
new.identifier = constraint.identifier
new.shouldBeArchived = constraint.shouldBeArchived
new.isActive = constraint.isActive
And console log is below:
2019-03-27 15:36:33.740004+0800 Cale[86571:50392102] *** Terminating app due to uncaught exception 'NSInvalidArgumentException', reason: 'NSLayoutConstraint for <Cale.AirportButton: 0x7f9eb454d990; baseClass = UIButton; frame = (0 129; 120 120); autoresize = RM+BM; layer = <CALayer: 0x600003936460>>: Unknown layout attribute'
*** First throw call stack:
(
0 CoreFoundation 0x000000010bf501bb __exceptionPreprocess + 331
1 libobjc.A.dylib 0x000000010b4ee735 objc_exception_throw + 48
2 CoreFoundation 0x000000010bf50015 +[NSException raise:format:] + 197
3 Foundation 0x000000010a16cf61 ResolveConstraintArguments + 372
4 Foundation 0x000000010a16d2cb +[NSLayoutConstraint constraintWithItem:attribute:relatedBy:toItem:attribute:multiplier:constant:] + 80
.
.
.
swift
swift
edited Mar 27 at 8:44
Chitra Khatri
9751 gold badge12 silver badges30 bronze badges
asked Mar 27 at 7:45
WeiWei
417 bronze badges
edited Mar 27 at 8:44
Chitra Khatri
9751 gold badge12 silver badges30 bronze badges
asked Mar 27 at 7:45
WeiWei
417 bronze badges
edited Mar 27 at 8:44
Chitra Khatri
9751 gold badge12 silver badges30 bronze badges
edited Mar 27 at 8:44
Chitra Khatri
9751 gold badge12 silver badges30 bronze badges
edited Mar 27 at 8:44
Chitra Khatri
9751 gold badge12 silver badges30 bronze badges
9751 gold badge12 silver badges30 bronze badges
asked Mar 27 at 7:45
WeiWei
417 bronze badges
asked Mar 27 at 7:45
WeiWei
417 bronze badges
asked Mar 27 at 7:45
WeiWei
417 bronze badges
417 bronze badges
Why don't you just remove the constraints and add them to the second view? make sure to add the constraints to the needed view after adding the view
– Sanad Barjawi
Mar 27 at 7:48
Instead of replacing the view. Create a container remove and add the required views from it.
– Sachin Vas
Mar 27 at 8:12
Because both of viewA which is initialized from code and viewB is loaded from Nib are the same class. And yes, I can remove the constraints but I also need add same them to the second view like the method doing.
– Wei
Mar 27 at 8:15
I'm based on following link and trying to refactor it. Creating custom UI components in iOS with Swift
– Wei
Mar 27 at 8:17
add a comment |
Why don't you just remove the constraints and add them to the second view? make sure to add the constraints to the needed view after adding the view
– Sanad Barjawi
Mar 27 at 7:48
Instead of replacing the view. Create a container remove and add the required views from it.
– Sachin Vas
Mar 27 at 8:12
Because both of viewA which is initialized from code and viewB is loaded from Nib are the same class. And yes, I can remove the constraints but I also need add same them to the second view like the method doing.
– Wei
Mar 27 at 8:15
I'm based on following link and trying to refactor it. Creating custom UI components in iOS with Swift
– Wei
Mar 27 at 8:17
Why don't you just remove the constraints and add them to the second view? make sure to add the constraints to the needed view after adding the view
– Sanad Barjawi
Mar 27 at 7:48
Why don't you just remove the constraints and add them to the second view? make sure to add the constraints to the needed view after adding the view
– Sanad Barjawi
Mar 27 at 7:48
Instead of replacing the view. Create a container remove and add the required views from it.
– Sachin Vas
Mar 27 at 8:12
Instead of replacing the view. Create a container remove and add the required views from it.
– Sachin Vas
Mar 27 at 8:12
Because both of viewA which is initialized from code and viewB is loaded from Nib are the same class. And yes, I can remove the constraints but I also need add same them to the second view like the method doing.
– Wei
Mar 27 at 8:15
Because both of viewA which is initialized from code and viewB is loaded from Nib are the same class. And yes, I can remove the constraints but I also need add same them to the second view like the method doing.
– Wei
Mar 27 at 8:15
I'm based on following link and trying to refactor it. Creating custom UI components in iOS with Swift
– Wei
Mar 27 at 8:17
I'm based on following link and trying to refactor it. Creating custom UI components in iOS with Swift
– Wei
Mar 27 at 8:17
add a comment |
1 Answer
1
active
oldest
votes
1
I fixed it,... thanks a lot.
I modified code from:
let second: Any? = (isSecond) ? to : constraint.secondItem as? Any
to:
let second: Any? = (isSecond) ? to : constraint.secondItem
answered Mar 27 at 8:50
WeiWei
417 bronze badges
type Optional<Any?> v.s. Any?
– Wei
Mar 27 at 8:51
add a comment |
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1 Answer
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1
I fixed it,... thanks a lot.
I modified code from:
let second: Any? = (isSecond) ? to : constraint.secondItem as? Any
to:
let second: Any? = (isSecond) ? to : constraint.secondItem
answered Mar 27 at 8:50
WeiWei
417 bronze badges
type Optional<Any?> v.s. Any?
– Wei
Mar 27 at 8:51
add a comment |
1
I fixed it,... thanks a lot.
I modified code from:
let second: Any? = (isSecond) ? to : constraint.secondItem as? Any
to:
let second: Any? = (isSecond) ? to : constraint.secondItem
answered Mar 27 at 8:50
WeiWei
417 bronze badges
type Optional<Any?> v.s. Any?
– Wei
Mar 27 at 8:51
add a comment |
1
1
1
I fixed it,... thanks a lot.
I modified code from:
let second: Any? = (isSecond) ? to : constraint.secondItem as? Any
to:
let second: Any? = (isSecond) ? to : constraint.secondItem
answered Mar 27 at 8:50
WeiWei
417 bronze badges
I fixed it,... thanks a lot.
I modified code from:
let second: Any? = (isSecond) ? to : constraint.secondItem as? Any
to:
let second: Any? = (isSecond) ? to : constraint.secondItem
answered Mar 27 at 8:50
WeiWei
417 bronze badges
answered Mar 27 at 8:50
WeiWei
417 bronze badges
answered Mar 27 at 8:50
WeiWei
417 bronze badges
answered Mar 27 at 8:50
WeiWei
417 bronze badges
417 bronze badges
type Optional<Any?> v.s. Any?
– Wei
Mar 27 at 8:51
add a comment |
type Optional<Any?> v.s. Any?
– Wei
Mar 27 at 8:51
type Optional<Any?> v.s. Any?
– Wei
Mar 27 at 8:51
type Optional<Any?> v.s. Any?
– Wei
Mar 27 at 8:51
add a comment |
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Why don't you just remove the constraints and add them to the second view? make sure to add the constraints to the needed view after adding the view
– Sanad Barjawi
Mar 27 at 7:48
Instead of replacing the view. Create a container remove and add the required views from it.
– Sachin Vas
Mar 27 at 8:12
Because both of viewA which is initialized from code and viewB is loaded from Nib are the same class. And yes, I can remove the constraints but I also need add same them to the second view like the method doing.
– Wei
Mar 27 at 8:15
I'm based on following link and trying to refactor it. Creating custom UI components in iOS with Swift
– Wei
Mar 27 at 8:17