UICollectionViewCell Auto Layout
He inventado una simple costumbreUICollectionViewCell
en mi guión gráfico, también hice esto programáticamente con resultados idénticos.
Tiene un singularUIImageView
y dosUILabels
, al igual que:
<--UIIMAGEVIEW--> <--UILABEL-------->
|-(10px)- | | -(10px)- -(10px)-|
<---------------> <--UILABEL-------->
La imagen se encuentra a la izquierda, luego a la derecha hay dos etiquetas una encima de la otra.
Cada uno está separado con espacios de 10 píxeles, y todos centrados en el eje Y de las celdas. Las etiquetas tienen una constante para compensarlas desde el centro (arriba y abajo).
La imagen tiene una altura y un ancho fijos de 44 píxeles y las etiquetas tienen una altura fija de 20 píxeles (con ancho flexible).
Las restricciones funcionan según lo esperado y nunca rompen la aplicación, pero siempre escupen esta información de registro de consola molesta a continuación, ya que aparentemente se están rompiendo.
Si agrego esta línea a miUICollectionViewCell
subclase, las restricciones ya no se rompen y escupen errores de la consola, pero están totalmente rotas en la pantalla.
[self.contentView setTranslatesAutoresizingMaskIntoConstraints:NO];
¿Alguna pista? ¡Parece tan ilógico!
Aquí está el código de error de la consola:
2014-10-25 18:28:14.273 Air Plan[1579:580797] 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:0x17009edc0 H:[UIImageView:0x1701f7d00(44)]>",
"<NSLayoutConstraint:0x17009f130 H:|-(10)-[UIImageView:0x1701f7d00] (Names: '|':UIView:0x170183810 )>",
"<NSLayoutConstraint:0x17009f270 H:[UIImageView:0x1701f7d00]-(10)-[UILabel:0x155e59970'detailLbl']>",
"<NSLayoutConstraint:0x17009f310 H:[UILabel:0x155e59970'detailLbl']-(10)-| (Names: '|':UIView:0x170183810 )>",
"<NSAutoresizingMaskLayoutConstraint:0x17409eff0 h=--& v=--& H:[UIView:0x170183810(50)]>"
)
Will attempt to recover by breaking constraint
<NSLayoutConstraint:0x17009edc0 H:[UIImageView:0x1701f7d00(44)]>
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.
2014-10-25 18:28:14.276 Air Plan[1579:580797] 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:0x17009fcc0 H:[UIImageView:0x1701fa800(44)]>",
"<NSLayoutConstraint:0x17009ff40 H:|-(10)-[UIImageView:0x1701fa800] (Names: '|':UIView:0x170180a90 )>",
"<NSLayoutConstraint:0x1702800a0 H:[UIImageView:0x1701fa800]-(10)-[UILabel:0x155e5b440'detailLbl']>",
"<NSLayoutConstraint:0x170280140 H:[UILabel:0x155e5b440'detailLbl']-(10)-| (Names: '|':UIView:0x170180a90 )>",
"<NSAutoresizingMaskLayoutConstraint:0x17409ea00 h=--& v=--& H:[UIView:0x170180a90(50)]>"
)
Will attempt to recover by breaking constraint
<NSLayoutConstraint:0x17009fcc0 H:[UIImageView:0x1701fa800(44)]>
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.
2014-10-25 18:28:14.278 Air Plan[1579:580797] 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:0x170280a00 H:[UIImageView:0x1701fab00(44)]>",
"<NSLayoutConstraint:0x170280c80 H:|-(10)-[UIImageView:0x1701fab00] (Names: '|':UIView:0x1701822f0 )>",
"<NSLayoutConstraint:0x170280dc0 H:[UIImageView:0x1701fab00]-(10)-[UILabel:0x155e5cd10'detailLbl']>",
"<NSLayoutConstraint:0x170280e60 H:[UILabel:0x155e5cd10'detailLbl']-(10)-| (Names: '|':UIView:0x1701822f0 )>",
"<NSAutoresizingMaskLayoutConstraint:0x17409f180 h=--& v=--& H:[UIView:0x1701822f0(50)]>"
)
Will attempt to recover by breaking constraint
<NSLayoutConstraint:0x170280a00 H:[UIImageView:0x1701fab00(44)]>
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.
2014-10-25 18:28:14.280 Air Plan[1579:580797] 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:0x170281090 H:[UIImageView:0x1701fae00(44)]>",
"<NSLayoutConstraint:0x170281310 H:|-(10)-[UIImageView:0x1701fae00] (Names: '|':UIView:0x170182220 )>",
"<NSLayoutConstraint:0x1702813b0 H:[UIImageView:0x1701fae00]-(10)-[UILabel:0x155e5d620'titleLbl']>",
"<NSLayoutConstraint:0x170281400 H:[UILabel:0x155e5d620'titleLbl']-(10)-| (Names: '|':UIView:0x170182220 )>",
"<NSAutoresizingMaskLayoutConstraint:0x17409fd60 h=--& v=--& H:[UIView:0x170182220(50)]>"
)
Will attempt to recover by breaking constraint
<NSLayoutConstraint:0x170281090 H:[UIImageView:0x1701fae00(44)]>
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.
2014-10-25 18:28:14.282 Air Plan[1579:580797] 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:0x170281b80 H:[UIImageView:0x1701fb100(44)]>",
"<NSLayoutConstraint:0x17409f4a0 H:|-(10)-[UIImageView:0x1701fb100] (Names: '|':UIView:0x170182150 )>",
"<NSLayoutConstraint:0x17409f5e0 H:[UIImageView:0x1701fb100]-(10)-[UILabel:0x155d64210'detailLbl']>",
"<NSLayoutConstraint:0x17409f680 H:[UILabel:0x155d64210'detailLbl']-(10)-| (Names: '|':UIView:0x170182150 )>",
"<NSAutoresizingMaskLayoutConstraint:0x1742800f0 h=--& v=--& H:[UIView:0x170182150(50)]>"
)
Will attempt to recover by breaking constraint
<NSLayoutConstraint:0x170281b80 H:[UIImageView:0x1701fb100(44)]>
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.