I have a view controller with xib. xib contains all the subviews without constraints and I need to add these constraints manually. Everything is correct when I write my code in viewDidLoad. But I need to get a size parameter which is available in viewDidLayoutSubviews only. When I try to call my code in viewDidLayoutSubviews then I get the following error:
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.
(
"<NSLayoutConstraint:0x79edebb0 V:|-(50)-[UILabel:0x79f11bf0'You haven't imported any ...'] (Names: '|':UIView:0x79f11940 )>",
"<NSLayoutConstraint:0x79e4b190 V:|-(49)-[UILabel:0x79f11bf0'You haven't imported any ...'] (Names: '|':UIView:0x79f11940 )>"
)
Will attempt to recover by breaking constraint
<NSLayoutConstraint:0x79edebb0 V:|-(50)-[UILabel:0x79f11bf0'You haven't imported any ...'] (Names: '|':UIView:0x79f11940 )>
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.
The constraints are simple: all the views are placed in one column, fixed width, fixed height, distance between topmost view and superview's top border, distances between neighbour views and finally all the views are snapped to the superview's horizontal center.
UPDATED
I found the reason of the problem but I don't know why it doesn't work.
The problem is the topmost constraint value was based on views' bounds. The height value inside this bounds structure "jumps" by 1 (because viewDidLayoutSubviews is called multiple times). But why does it cause problems with constraints?
it says that 1 of the UILabel have Constraint which breaks layout.
2 options
clear Constraint of all label and set Constraint of each label by try n error
set id to all constraint of uilabel and then u will see id of constraint in
warning or error output.
basically it is due to u added an unwanted constraint.
Related
I am trying to implement the UITableView using xib file
But when I run the app I am getting the following error & the xib is properly in small screen like iPhone4s
it works fine in larger display size.
Screenshot of xib
Any help will be appreciated
Error
2016-12-14 17:12:41.826 FoodStrock[5776:1761262] 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.
(
"<NSLayoutConstraint:0x7fcc2a6dfac0 V:[UIImageView:0x7fcc2a6e1010(63)]>",
"<NSLayoutConstraint:0x7fcc2a617530 V:[UIImageView:0x7fcc2a6e1010]-(8)-| (Names: '|':UITableViewCellContentView:0x7fcc2a6e1270 )>",
"<NSLayoutConstraint:0x7fcc2a6cc3b0 V:|-(9)-[UIImageView:0x7fcc2a6e1010] (Names: '|':UITableViewCellContentView:0x7fcc2a6e1270 )>",
"<NSLayoutConstraint:0x7fcc2a4955a0 'UIView-Encapsulated-Layout-Height' V:[UITableViewCellContentView:0x7fcc2a6e1270(59.6667)]>"
)
Will attempt to recover by breaking constraint
<NSLayoutConstraint:0x7fcc2a6dfac0 V:[UIImageView:0x7fcc2a6e1010(63)]>
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.
2016-12-14 17:12:41.827 FoodStrock[5776:1761262] 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.
(
"<NSLayoutConstraint:0x7fcc2a6a69d0 V:[UILabel:0x7fcc2a6e1670'Address'(63)]>",
"<NSLayoutConstraint:0x7fcc2a693820 UILabel:0x7fcc2a6e1670'Address'.bottom == UITableViewCellContentView:0x7fcc2a6e1270.bottomMargin>",
"<NSLayoutConstraint:0x7fcc2a6e0c00 UILabel:0x7fcc2a6e1670'Address'.top == UITableViewCellContentView:0x7fcc2a6e1270.topMargin + 1>",
"<NSLayoutConstraint:0x7fcc2a4955a0 'UIView-Encapsulated-Layout-Height' V:[UITableViewCellContentView:0x7fcc2a6e1270(59.6667)]>"
)
Put your UIImageView , UILabel, UIButton in single UIView(says mainView). Now mainView constraints will be leading, trailing, top bottom from the xib view(superView). Now constraints of UIImageView , UILabel, UIButton is according to your requirement w.r.t. mainView.
NOTE: Give constraints to the UIComponents as minimal as possible but keep mind about it full fills your requirement. Like here, give constraints like this:
UIImage : top, bottom , Leading wrt mainView and constant width or you can give horizontally center to container, leading, height, width.
UIButton : top, bottom, trailing wrt mainView and constant width or you can give horizontally center to container, leading, height, width.
UILabel : leading trailing and horizontally centre to container is enough but you can give height also.
UILabel can automatically take height and width according to the text font size you just need to specify x and y coordinates.
UPDATE
Editing an XIB file, I added a button to the position that I'd like in the view and clicked the pin icon at the bottom right, and pinned all four sides of the button, with "Constrain to Margins" unchecked, as that's the exact location I would want to place the button and I wouldn't want it to move around.
But I got an error that says 'Unable to simultaneously satisfy constraints.' Why does that happen?
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)
(
"<_UILayoutSupportConstraint:0x9f494b0 V:[_UILayoutGuide:0x9f40370(20)]>",
"<_UILayoutSupportConstraint:0x9f3b6c0 V:|-(0)-[_UILayoutGuide:0x9f40370] (Names: '|':UIView:0x9f3feb0 )>",
"<_UILayoutSupportConstraint:0x9f418e0 V:[_UILayoutGuide:0x9f407c0(0)]>",
"<_UILayoutSupportConstraint:0x9f18010 _UILayoutGuide:0x9f407c0.bottom == UIView:0x9f3feb0.bottom>",
"<NSLayoutConstraint:0x9f40f10 V:[UIButton:0x9f40f40'Button']-(211)-[_UILayoutGuide:0x9f407c0]>",
"<NSLayoutConstraint:0x9f47ab0 V:[_UILayoutGuide:0x9f40370]-(539)-[UIButton:0x9f40f40'Button']>",
"<NSLayoutConstraint:0xa157b10 'UIView-Encapsulated-Layout-Height' V:[UIView:0x9f3feb0(568)]>"
)
Will attempt to recover by breaking constraint
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.
Autolayout technology work on relationship between objects and object with superview how they will draw on screen. as you mention you are trying to force object through all sides so set for specific position you can try by think how object will draw on screen by applying specific constraints.
if you want to place object of fix width and height at center of screen in all orientation then you can try
Align->Horizontal and Vertical center in container.
(Otherwise even they can crash your app if unsatisfied constraints)
Hope this will help you.
If you have a height or width assigned to the button it will conflict with the constraints you added. If you want it to always be at a certain x,y and specific size you should pin the top and left along with the width and height. If you want it to dynamically resize you should pin all 4 sides.
I have a custom table view cell with constraints suggested by Auto Layout. In the storyboard all the constraints are marked with blue lines indicating that they have no errors. The tableview launches fine and the layout works but as soon as I hit the cell to activate a segue I get this:
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.
I have not added any code that adds or removes constraints to my layout. All the constraints were auto-added by Auto layout.
The error only shows up when I hit the cell which activates a segue to take the user to the next view. When I hit the back button, the tableview returns but without any constraints.
The segue is set as Show(e.g. Push) in the Attributes Inspector.
Here's the rest of the message:
(Note: If you're seeing NSAutoresizingMaskLayoutConstraints that you don't understand, refer to the documentation for the UIView property translatesAutoresizingMaskIntoConstraints)
(
"<NSLayoutConstraint:0x7ff1c276fec0 UIImageView:0x7ff1c2496b40.top == UITableViewCellContentView:0x7ff1c2496630.topMargin + 15>",
"<NSLayoutConstraint:0x7ff1c276ff10 UIImageView:0x7ff1c2496b40.centerY == UITableViewCellContentView:0x7ff1c2496630.centerY>",
"<NSLayoutConstraint:0x7ff1c24c9a70 'UIView-Encapsulated-Layout-Height' V:[UITableViewCellContentView:0x7ff1c2496630(43.5)]>"
)
Will attempt to recover by breaking constraint
<NSLayoutConstraint:0x7ff1c276ff10 UIImageView:0x7ff1c2496b40.centerY == UITableViewCellContentView:0x7ff1c2496630.centerY>
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.
2015-01-06 11:35:58.645 FitLift[4174:130902] 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)
(
"<NSLayoutConstraint:0x7ff1c2494c00 UIImageView:0x7ff1c277c070.top == UITableViewCellContentView:0x7ff1c277bfa0.topMargin + 15>",
"<NSLayoutConstraint:0x7ff1c24a3360 UIImageView:0x7ff1c277c070.centerY == UITableViewCellContentView:0x7ff1c277bfa0.centerY>",
"<NSLayoutConstraint:0x7ff1c24b7010 'UIView-Encapsulated-Layout-Height' V:[UITableViewCellContentView:0x7ff1c277bfa0(43.5)]>"
)
Will attempt to recover by breaking constraint
<NSLayoutConstraint:0x7ff1c24a3360 UIImageView:0x7ff1c277c070.centerY == UITableViewCellContentView:0x7ff1c277bfa0.centerY>
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.
2015-01-06 11:35:58.646 FitLift[4174:130902] 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)
(
"<NSLayoutConstraint:0x7ff1c24c4390 UIImageView:0x7ff1c24bc880.top == UITableViewCellContentView:0x7ff1c24bc3d0.topMargin + 15>",
"<NSLayoutConstraint:0x7ff1c24c43e0 UIImageView:0x7ff1c24bc880.centerY == UITableViewCellContentView:0x7ff1c24bc3d0.centerY>",
"<NSLayoutConstraint:0x7ff1c24c7880 'UIView-Encapsulated-Layout-Height' V:[UITableViewCellContentView:0x7ff1c24bc3d0(43.5)]>"
)
Will attempt to recover by breaking constraint
<NSLayoutConstraint:0x7ff1c24c43e0 UIImageView:0x7ff1c24bc880.centerY == UITableViewCellContentView:0x7ff1c24bc3d0.centerY>
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.
From the error log, it seems the two conflicting constraints are the image view's top constraint and centerY constraint. Choose only one--iOS is confused what value to assign to the image view's y-coordinate. Do you want the image view to be a certain distance from the top, or to be a certain distance from the superview's vertical center?
As a general rule, if you want your UI to look the way you want to, DO NOT let Xcode auto-add the constraints for you. Define it yourself. We can't really help you here because we don't know the other constraints that Xcode added but don't conflict.
Try lowering one of your vertical constraint priorities to 999 or less.
"<NSLayoutConstraint:0x174091d00 V:|-(10)-[UILabel:0x14562e580'This'] (Names: '|':UITableViewCellContentView:0x17418d5b0 )>",
"<NSLayoutConstraint:0x174091e40 UITableViewCellContentView:0x17418d5b0.bottomMargin >= UILabel:0x14562e580'This'.bottom + 200>",
"<NSLayoutConstraint:0x17408c940 'UIView-Encapsulated-Layout-Height' V:[UITableViewCellContentView:0x17418d5b0(43.5)]>"
I was getting this, notice the last one, encapsulated height 43.5, I'm guessing its a default height, and if your vertical constraints don't fit within that 43.5, the error is thrown. I'm still uncertain how the self sizing cells work, but lowering priorities silenced the warning. I tested a cell shorter than the 43.5 and it also silenced it.
I had a similar problem and it was fixed by setting the tableview's estimatedRowHeight. The default 43.5 wasn't enough to even cover the fixed number of points I set (e.g., my top label in the cell was 10 points from the top of the cell, the bottom label was 10 points from the bottom, and space between rows of labels, etc.)
I am using auto layout to create five buttons at the bottom of the view.The layout looks like below where the brown colour shows the spacer view and number shows the buttons I am using.
When I set the constraints I find that for iPhone the views are not resizing and we are missing the buttons as in the below screen shot. The buttons are hidden and are not resizing.
When I run it on iPad the last spacer view is resizing and other
Also, there are some errors in the logs that i am unable to understand can see below.
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)
(
"<NSLayoutConstraint:0x7f8673d62320 H:[UIView:0x7f8673f08c40]-(398)-| (Names: '|':UIView:0x7f8673f08970 )>",
"<NSLayoutConstraint:0x7f8673d623c0 UIView:0x7f8673f08c40.leading == UIView:0x7f8673f08970.leadingMargin + 86>",
"<NSLayoutConstraint:0x7f8673d7c1e0 'UIView-Encapsulated-Layout-Width' H:[UIView:0x7f8673f08970(414)]>"
)
Will attempt to recover by breaking constraint
<NSLayoutConstraint:0x7f8673d623c0 UIView:0x7f8673f08c40.leading == UIView:0x7f8673f08970.leadingMargin + 86>
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.
2014-12-29 13:00:54.932 Browser_Test[2480:60168] 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)
(
"<NSLayoutConstraint:0x7f8673d62b60 H:|-(446)-[UIView:0x7f8673d48640] (Names: '|':UIView:0x7f8673f08970 )>",
"<NSLayoutConstraint:0x7f8673d62bb0 UIView:0x7f8673f08970.trailingMargin == UIButton:0x7f8673d53450'5'.trailing + 8>",
"<NSLayoutConstraint:0x7f8673d62c00 H:[UIView:0x7f8673d48640]-(0)-[UIButton:0x7f8673d53450'5']>",
"<NSLayoutConstraint:0x7f8673d7c1e0 'UIView-Encapsulated-Layout-Width' H:[UIView:0x7f8673f08970(414)]>"
)
Will attempt to recover by breaking constraint
<NSLayoutConstraint:0x7f8673d62c00 H:[UIView:0x7f8673d48640]-(0)-[UIButton:0x7f8673d53450'5']>
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.
So can please some body suggest me whats getting wrong.
Edit:1
Edit:2
The buttons should all have pinned width. Button 1 should be set leading to the superview and trailing to spacer 1. Button 5 should be set leading to spacer 4 and trailing to the superview. Other buttons should be set leading and trailing to the adjacent spacers. All of the spacers should be set to have equal width to spacer 1.
Now, autolayout will resize the spacer views, all at the same time, to fill the available space as they don't have a specified width but the buttons do and they also have set edges (for buttons 1 and 5).
i'm currently facing this problem, i need to define a dynamic height UITableViewCell.
The red lines correspond to resizable views (will grow vertically), the blue label have 3 constraints: two for each immediate red views above (>= 8), one more with 170 and lower priority to superview.
The green one has a bottom constraint to the superview (5)
When i try to run my code, it gives me this:
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)
(
"<NSLayoutConstraint:0x19d65bb0 V:[UIView:0x19d9a9a0(5)]>",
"<NSLayoutConstraint:0x19d667d0 V:[UILabel:0x19de4180(19)]>",
"<NSLayoutConstraint:0x19d5ba70 V:[UILabel:0x19d61870(19)]>",
"<NSLayoutConstraint:0x19d36df0 V:[UILabel:0x19d36e80(19)]>",
"<NSLayoutConstraint:0x19d35d30 V:[UIView:0x19d36130(0)]>",
"<NSLayoutConstraint:0x19e7b310 V:|-(5)-[UILabel:0x19d6b520] (Names: '|':UITableViewCellContentView:0x19d97580 )>",
"<NSLayoutConstraint:0x17d0b060 V:[UILabel:0x19d6b520]-(5)-[UIView:0x19d9a9a0]>",
"<NSLayoutConstraint:0x17d0a480 V:[UIView:0x19d9a9a0]-(8)-[UILabel:0x19de4180]>",
"<NSLayoutConstraint:0x17d0c920 V:[UILabel:0x19de4180]-(8)-[UILabel:0x19d61870]>",
"<NSLayoutConstraint:0x17d0a100 V:[UILabel:0x19d61870]-(8)-[UIView:0x19d839e0]>",
"<NSLayoutConstraint:0x17d11ad0 V:[UIView:0x19d839e0]-(8)-[UILabel:0x19d36e80]>",
"<NSLayoutConstraint:0x19e742a0 V:[UILabel:0x19d36e80]-(8)-[UILabel:0x19d36770]>",
"<NSLayoutConstraint:0x19ed84a0 V:[UILabel:0x19d36770]-(8)-[UIView:0x19d36130]>",
"<NSLayoutConstraint:0x19e76410 V:[UIView:0x19d36130]-(>=8)-[UILabel:0x19d35560]>",
"<NSLayoutConstraint:0x19ed8af0 V:[UILabel:0x19d35560]-(8)-[UITextView:0x1832ba00]>",
"<NSLayoutConstraint:0x19e7abf0 V:[UITextView:0x1832ba00]-(8)-[UILabel:0x19e7d890]>",
"<NSLayoutConstraint:0x19e83d90 V:[UILabel:0x19e7d890]-(8)-[UITextView:0x18a95e00]>",
"<NSLayoutConstraint:0x19e7b520 V:[UITextView:0x18a95e00]-(5)-| (Names: '|':UITableViewCellContentView:0x19d97580 )>",
"<NSAutoresizingMaskLayoutConstraint:0x19d46fc0 h=--& v=--& V:[UITableViewCellContentView:0x19d97580(0)]>"
)
Will attempt to recover by breaking constraint
<NSLayoutConstraint:0x19d36df0 V:[UILabel:0x19d36e80(19)]>
Break on objc_exception_throw to catch this in the debugger.
The methods in the UIConstraintBasedLayoutDebugging category on UIView listed in <UIKit/UIView.h> may also be helpful.
So, the question is:
What is the correct way of achieving this???
Are u using storyboard, if yes, simple go to Editor->Resolve Auto Layout Issues->Clear All Constraints In ........ Controller, and then Add Missing Constraints In ...... Controller
It will help you fix the problem of breaking contrainsts between view