FS.O5 FS.O5 - 3 months ago 11
iOS Question

Add constraints programmatically

I have 5 buttons I want to place on screen programmatically.

I want them to be 17px above the bottom of the view, and 20px space between every button.

I've done that like this:

let button1 = UIButton(frame: CGRectMake(20, 48, 50, 50))
button1.setImage(UIImage(named: "button1"), forState: .Normal)

let button2 = UIButton(frame: CGRectMake(91, 48, 50, 50))
button2.setImage(UIImage(named: "button2"), forState: .Normal)

let button3 = UIButton(frame: CGRectMake(162, 48, 50, 50))
button3.setImage(UIImage(named: "button3"), forState: .Normal)

let button4 = UIButton(frame: CGRectMake(233, 48, 50, 50))
button4.setImage(UIImage(named: "button4"), forState: .Normal)

let button5 = UIButton(frame: CGRectMake(304, 48, 50, 50))
button5.setImage(UIImage(named: "button5"), forState: .Normal)

self.addSubview(button1)
self.addSubview(button2)
self.addSubview(button3)
self.addSubview(button4)
self.addSubview(button5)


I works great and exactly what I want! But just on iPhone 6s screen size, so I guess the way to make it work on all screen sizes is using constraints, the problem is that I don't have an idea how can I add constraints programmatically.

Can someone help me here?

Thank you!

SaintThread answer, log 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.
(Note: If you're seeing NSAutoresizingMaskLayoutConstraints that you don't understand, refer to the documentation for the UIView property translatesAutoresizingMaskIntoConstraints)
(
"<NSAutoresizingMaskLayoutConstraint:0x7d968a10 h=--& v=--& UIButton:0x79729670.midX == + 45>",
"<NSLayoutConstraint:0x79725610 H:|-(48)-[UIButton:0x79729670] (Names: '|':Arounder.CategoriesBarView:0x797c7190 )>",
"<NSLayoutConstraint:0x797255e0 H:[UIButton:0x79729670(50)]>"
)

Will attempt to recover by breaking constraint
<NSLayoutConstraint:0x797255e0 H:[UIButton:0x79729670(50)]>

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.
2016-08-17 12:49:14.305 Arounder[3992:10988727] 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:0x7d968a10 h=--& v=--& UIButton:0x79729670.midX == + 45>",
"<NSLayoutConstraint:0x79725610 H:|-(48)-[UIButton:0x79729670] (Names: '|':Arounder.CategoriesBarView:0x797c7190 )>"
)

Will attempt to recover by breaking constraint
<NSLayoutConstraint:0x79725610 H:|-(48)-[UIButton:0x79729670] (Names: '|':Arounder.CategoriesBarView:0x797c7190 )>

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.
2016-08-17 12:49:14.305 Arounder[3992:10988727] 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:0x7d96a3c0 h=--& v=--& UIButton:0x79729670.midY == + 73>",
"<NSLayoutConstraint:0x79725c50 V:|-(20)-[UIButton:0x79729670] (Names: '|':Arounder.CategoriesBarView:0x797c7190 )>",
"<NSLayoutConstraint:0x79725ad0 V:[UIButton:0x79729670(50)]>"
)

Will attempt to recover by breaking constraint
<NSLayoutConstraint:0x79725ad0 V:[UIButton:0x79729670(50)]>

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.
2016-08-17 12:49:14.306 Arounder[3992:10988727] 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:0x7d96a3c0 h=--& v=--& UIButton:0x79729670.midY == + 73>",
"<NSAutoresizingMaskLayoutConstraint:0x7d96a3f0 h=--& v=--& V:[UIButton:0x79729670(50)]>",
"<NSLayoutConstraint:0x79725c50 V:|-(20)-[UIButton:0x79729670] (Names: '|':Arounder.CategoriesBarView:0x797c7190 )>"
)

Will attempt to recover by breaking constraint
<NSLayoutConstraint:0x79725c50 V:|-(20)-[UIButton:0x79729670] (Names: '|':Arounder.CategoriesBarView:0x797c7190 )>

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.
2016-08-17 12:49:14.306 Arounder[3992:10988727] 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:0x7a991c60 h=--& v=--& UIButton:0x79729080.midX == + 116>",
"<NSLayoutConstraint:0x79725560 H:|-(48)-[UIButton:0x79729080] (Names: '|':Arounder.CategoriesBarView:0x797c7190 )>",
"<NSLayoutConstraint:0x79725510 H:[UIButton:0x79729080(50)]>"
)

Will attempt to recover by breaking constraint
<NSLayoutConstraint:0x79725510 H:[UIButton:0x79729080(50)]>

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.
2016-08-17 12:49:14.306 Arounder[3992:10988727] 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:0x7a991c60 h=--& v=--& UIButton:0x79729080.midX == + 116>",
"<NSAutoresizingMaskLayoutConstraint:0x7a991c90 h=--& v=--& H:[UIButton:0x79729080(50)]>",
"<NSLayoutConstraint:0x79725560 H:|-(48)-[UIButton:0x79729080] (Names: '|':Arounder.CategoriesBarView:0x797c7190 )>"
)

Will attempt to recover by breaking constraint
<NSLayoutConstraint:0x79725560 H:|-(48)-[UIButton:0x79729080] (Names: '|':Arounder.CategoriesBarView:0x797c7190 )>

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.
2016-08-17 12:49:14.307 Arounder[3992:10988727] 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:0x7d96a3c0 h=--& v=--& UIButton:0x79729670.midY == + 73>",
"<NSAutoresizingMaskLayoutConstraint:0x7d96a3f0 h=--& v=--& V:[UIButton:0x79729670(50)]>",
"<NSAutoresizingMaskLayoutConstraint:0x7a991cc0 h=--& v=--& UIButton:0x79729080.midY == + 73>",
"<NSLayoutConstraint:0x79725a10 V:[UIButton:0x79729670]-(20)-[UIButton:0x79729080]>",
"<NSLayoutConstraint:0x797259e0 V:[UIButton:0x79729080(50)]>"
)

Will attempt to recover by breaking constraint
<NSLayoutConstraint:0x797259e0 V:[UIButton:0x79729080(50)]>

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.
2016-08-17 12:49:14.307 Arounder[3992:10988727] 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:0x7d96a3c0 h=--& v=--& UIButton:0x79729670.midY == + 73>",
"<NSAutoresizingMaskLayoutConstraint:0x7d96a3f0 h=--& v=--& V:[UIButton:0x79729670(50)]>",
"<NSAutoresizingMaskLayoutConstraint:0x7a991cc0 h=--& v=--& UIButton:0x79729080.midY == + 73>",
"<NSLayoutConstraint:0x79725a10 V:[UIButton:0x79729670]-(20)-[UIButton:0x79729080]>"
)

Will attempt to recover by breaking constraint
<NSLayoutConstraint:0x79725a10 V:[UIButton:0x79729670]-(20)-[UIButton:0x79729080]>

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.
2016-08-17 12:49:14.307 Arounder[3992:10988727] 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:0x7d96b720 h=--& v=--& UIButton:0x79728480.midX == + 187>",
"<NSLayoutConstraint:0x79725490 H:|-(48)-[UIButton:0x79728480] (Names: '|':Arounder.CategoriesBarView:0x797c7190 )>",
"<NSLayoutConstraint:0x79725440 H:[UIButton:0x79728480(50)]>"
)

Will attempt to recover by breaking constraint
<NSLayoutConstraint:0x79725440 H:[UIButton:0x79728480(50)]>

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.
2016-08-17 12:49:14.308 Arounder[3992:10988727] 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:0x7d96b720 h=--& v=--& UIButton:0x79728480.midX == + 187>",
"<NSAutoresizingMaskLayoutConstraint:0x7d96b750 h=--& v=--& H:[UIButton:0x79728480(50)]>",
"<NSLayoutConstraint:0x79725490 H:|-(48)-[UIButton:0x79728480] (Names: '|':Arounder.CategoriesBarView:0x797c7190 )>"
)

Will attempt to recover by breaking constraint
<NSLayoutConstraint:0x79725490 H:|-(48)-[UIButton:0x79728480] (Names: '|':Arounder.CategoriesBarView:0x797c7190 )>

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.
2016-08-17 12:49:14.308 Arounder[3992:10988727] 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:0x7a991cc0 h=--& v=--& UIButton:0x79729080.midY == + 73>",
"<NSAutoresizingMaskLayoutConstraint:0x7a991cf0 h=--& v=--& V:[UIButton:0x79729080(50)]>",
"<NSAutoresizingMaskLayoutConstraint:0x7d96c260 h=--& v=--& UIButton:0x79728480.midY == + 73>",
"<NSLayoutConstraint:0x797259b0 V:[UIButton:0x79729080]-(20)-[UIButton:0x79728480]>",
"<NSLayoutConstraint:0x79725980 V:[UIButton:0x79728480(50)]>"
)

Will attempt to recover by breaking constraint
<NSLayoutConstraint:0x79725980 V:[UIButton:0x79728480(50)]>

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.
2016-08-17 12:49:14.308 Arounder[3992:10988727] 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:0x7a991cc0 h=--& v=--& UIButton:0x79729080.midY == + 73>",
"<NSAutoresizingMaskLayoutConstraint:0x7a991cf0 h=--& v=--& V:[UIButton:0x79729080(50)]>",
"<NSAutoresizingMaskLayoutConstraint:0x7d96c260 h=--& v=--& UIButton:0x79728480.midY == + 73>",
"<NSLayoutConstraint:0x797259b0 V:[UIButton:0x79729080]-(20)-[UIButton:0x79728480]>"
)

Will attempt to recover by breaking constraint
<NSLayoutConstraint:0x797259b0 V:[UIButton:0x79729080]-(20)-[UIButton:0x79728480]>

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.
2016-08-17 12:49:14.309 Arounder[3992:10988727] 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:0x7aad76b0 h=--& v=--& UIButton:0x79727bc0.midX == + 258>",
"<NSLayoutConstraint:0x797253b0 H:|-(48)-[UIButton:0x79727bc0] (Names: '|':Arounder.CategoriesBarView:0x797c7190 )>",
"<NSLayoutConstraint:0x79725380 H:[UIButton:0x79727bc0(50)]>"
)

Will attempt to recover by breaking constraint
<NSLayoutConstraint:0x79725380 H:[UIButton:0x79727bc0(50)]>

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.
2016-08-17 12:49:14.309 Arounder[3992:10988727] 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:0x7aad76b0 h=--& v=--& UIButton:0x79727bc0.midX == + 258>",
"<NSAutoresizingMaskLayoutConstraint:0x7aad76e0 h=--& v=--& H:[UIButton:0x79727bc0(50)]>",
"<NSLayoutConstraint:0x797253b0 H:|-(48)-[UIButton:0x79727bc0] (Names: '|':Arounder.CategoriesBarView:0x797c7190 )>"
)

Will attempt to recover by breaking constraint
<NSLayoutConstraint:0x797253b0 H:|-(48)-[UIButton:0x79727bc0] (Names: '|':Arounder.CategoriesBarView:0x797c7190 )>

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.
2016-08-17 12:49:14.309 Arounder[3992:10988727] 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:0x7d96c260 h=--& v=--& UIButton:0x79728480.midY == + 73>",
"<NSAutoresizingMaskLayoutConstraint:0x7d96c290 h=--& v=--& V:[UIButton:0x79728480(50)]>",
"<NSAutoresizingMaskLayoutConstraint:0x7aad7710 h=--& v=--& UIButton:0x79727bc0.midY == + 73>",
"<NSLayoutConstraint:0x79725950 V:[UIButton:0x79728480]-(20)-[UIButton:0x79727bc0]>",
"<NSLayoutConstraint:0x79725920 V:[UIButton:0x79727bc0(50)]>"
)

Will attempt to recover by breaking constraint
<NSLayoutConstraint:0x79725920 V:[UIButton:0x79727bc0(50)]>

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.
2016-08-17 12:49:14.309 Arounder[3992:10988727] 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:0x7d96c260 h=--& v=--& UIButton:0x79728480.midY == + 73>",
"<NSAutoresizingMaskLayoutConstraint:0x7d96c290 h=--& v=--& V:[UIButton:0x79728480(50)]>",
"<NSAutoresizingMaskLayoutConstraint:0x7aad7710 h=--& v=--& UIButton:0x79727bc0.midY == + 73>",
"<NSLayoutConstraint:0x79725950 V:[UIButton:0x79728480]-(20)-[UIButton:0x79727bc0]>"
)

Will attempt to recover by breaking constraint
<NSLayoutConstraint:0x79725950 V:[UIButton:0x79728480]-(20)-[UIButton:0x79727bc0]>

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.
2016-08-17 12:49:14.310 Arounder[3992:10988727] 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:0x7a993980 h=--& v=--& UIButton:0x797270c0.midX == + 329>",
"<NSLayoutConstraint:0x797252e0 H:|-(48)-[UIButton:0x797270c0] (Names: '|':Arounder.CategoriesBarView:0x797c7190 )>",
"<NSLayoutConstraint:0x79725290 H:[UIButton:0x797270c0(50)]>"
)

Will attempt to recover by breaking constraint
<NSLayoutConstraint:0x79725290 H:[UIButton:0x797270c0(50)]>

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.
2016-08-17 12:49:14.310 Arounder[3992:10988727] 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:0x7a993980 h=--& v=--& UIButton:0x797270c0.midX == + 329>",
"<NSAutoresizingMaskLayoutConstraint:0x7a9939b0 h=--& v=--& H:[UIButton:0x797270c0(50)]>",
"<NSLayoutConstraint:0x797252e0 H:|-(48)-[UIButton:0x797270c0] (Names: '|':Arounder.CategoriesBarView:0x797c7190 )>"
)

Will attempt to recover by breaking constraint
<NSLayoutConstraint:0x797252e0 H:|-(48)-[UIButton:0x797270c0] (Names: '|':Arounder.CategoriesBarView:0x797c7190 )>

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.
2016-08-17 12:49:14.310 Arounder[3992:10988727] 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:0x7aad7710 h=--& v=--& UIButton:0x79727bc0.midY == + 73>",
"<NSAutoresizingMaskLayoutConstraint:0x7aad7a50 h=--& v=--& V:[UIButton:0x79727bc0(50)]>",
"<NSAutoresizingMaskLayoutConstraint:0x7a993510 h=--& v=--& UIButton:0x797270c0.midY == + 73>",
"<NSLayoutConstraint:0x797258d0 V:[UIButton:0x79727bc0]-(20)-[UIButton:0x797270c0]>",
"<NSLayoutConstraint:0x797258a0 V:[UIButton:0x797270c0(50)]>"
)

Will attempt to recover by breaking constraint
<NSLayoutConstraint:0x797258a0 V:[UIButton:0x797270c0(50)]>

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.
2016-08-17 12:49:14.311 Arounder[3992:10988727] 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:0x7aad7710 h=--& v=--& UIButton:0x79727bc0.midY == + 73>",
"<NSAutoresizingMaskLayoutConstraint:0x7aad7a50 h=--& v=--& V:[UIButton:0x79727bc0(50)]>",
"<NSAutoresizingMaskLayoutConstraint:0x7a993510 h=--& v=--& UIButton:0x797270c0.midY == + 73>",
"<NSLayoutConstraint:0x797258d0 V:[UIButton:0x79727bc0]-(20)-[UIButton:0x797270c0]>"
)

Will attempt to recover by breaking constraint
<NSLayoutConstraint:0x797258d0 V:[UIButton:0x79727bc0]-(20)-[UIButton:0x797270c0]>

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.

Answer

iOS 8 safe

Before adding the buttons to view

button1.translatesAutoresizingMaskIntoConstraints = false
button2.translatesAutoresizingMaskIntoConstraints = false
button3.translatesAutoresizingMaskIntoConstraints = false
button4.translatesAutoresizingMaskIntoConstraints = false
button5.translatesAutoresizingMaskIntoConstraints = false

After adding the buttons to view

let views = ["button1": button1,
  "button2": button2,
  "button3": button3,
  "button4": button4,
  "button5": button5]

let buttonConstraintsH = NSLayoutConstraint.constraintsWithVisualFormat(
  "H:|-20-[button1]-20-[button2]-20-[button3]-20-[button4]-20-[button5]-20-|",
  options: [],
  metrics: nil,
  views: views)

let button1ConstraintsV = NSLayoutConstraint.constraintsWithVisualFormat(
  "V:[button1]-17-|",
  options: [],
  metrics: nil,
  views: views)

let button2ConstraintsV = NSLayoutConstraint.constraintsWithVisualFormat(
  "V:[button2]-17-|",
  options: [],
  metrics: nil,
  views: views)

let button3ConstraintsV = NSLayoutConstraint.constraintsWithVisualFormat(
  "V:[button3]-17-|",
  options: [],
  metrics: nil,
  views: views)

let button4ConstraintsV = NSLayoutConstraint.constraintsWithVisualFormat(
  "V:[button4]-17-|",
  options: [],
  metrics: nil,
  views: views)

let button5ConstraintsV = NSLayoutConstraint.constraintsWithVisualFormat(
  "V:[button5]-17-|",
  options: [],
  metrics: nil,
  views: views)

NSLayoutConstraint.activateConstraints([buttonConstraintsH, button1ConstraintsV, button2ConstraintsV, button3ConstraintsV, button4ConstraintsV, button5ConstraintsV])

and to have the same ratio (write it for each button):

NSLayoutConstraint.activateConstraints(NSLayoutConstraint( 
item:button1 
attribute:NSLayoutAttributeHeight 
relatedBy:NSLayoutRelationEqual 
toItem:button1  
attribute:NSLayoutAttributeWidth 
multiplier:1 
constant:0))
Comments