When passing data how can I make a variable recognizable to multiple classes?
0
I have a function that passes in a string to determine what class my destination vc will be once I navigate. I'm also passing data to vc regardless of which class vc ends up being cast as. However, I'm getting an expected error of
VAlue of type 'UIViewController?' has no member ....
since vc hasn't been cast as any subclass yet.
func passAndNavigateResultsFor(surveyName: String){
let storyboard = UIStoryboard(name: "Main", bundle: nil)
var vc = storyboard.instantiateInitialViewController()
//Determining which class vc will be cast as
if surveyName == "EFDizzinessSurveyTask" {
let vc = storyboard.instantiateViewController(withIdentifier :surveyName) as! EFDizzinessSurveyResults
} else if surveyName == "EFHipArthritisSurveyTask" {
let vc = storyboard.instantiateViewController(withIdentifier :surveyName) as! EFHipArthritisSurveyResults
} else if surveyName == "EFKoosKneeSurveyTask" {
let vc = storyboard.instantiateViewController(withIdentifier :surveyName) as! EFKoosKneeSurveyResults
} else if surveyName == "EFLEFSSurveyTask" {
let vc = storyboard.instantiateViewController(withIdentifier :surveyName) as! EFLEFSSurveyResults
} else if surveyName == "EFQuickDASHSurveyTask" {
let vc = storyboard.instantiateViewController(withIdentifier :surveyName) as! EFQuickDASHSurveyResults
} else if surveyName == "EFNeckDisabilitySurveyTask" {
let vc = storyboard.instantiateViewController(withIdentifier :surveyName) as! EFNeckDisabilitySurveyResults
}
//Data that I want to pass through regardless of which class vc is cast as
if (firstNameResult != nil) && (lastNameResult != nil) {
self.fullName = self.firstNameResult! + " " + self.lastNameResult!
vc.nameText = self.fullName!
}
if painLevelResult != nil {
vc.painLevelText = String(describing: painLevelResult!)
}
if careSatisfactionResult != nil {
vc.careSatisfactionText = String(describing: careSatisfactionResult!)
}
if rateProgressResult != nil {
vc.rateProgressText = String(describing: rateProgressResult!)
}
if therapyGoalsResult != nil {
vc.therapyGoalsText = String(describing: therapyGoalsResult!)
}
if step1Result != nil {
vc.step1Text = String(describing: step1Result!)
}
if step2Result != nil {
vc.step2Text = String(describing: step2Result!)
}
if step3Result != nil {
vc.step3Text = String(describing: step3Result!)
}
if step4Result != nil {
vc.step4Text = String(describing: step4Result!)
}
}
Is there a way to fix this problem, or should I look at a solution like prepareForSegue instead?
ios swift
asked Nov 24 '18 at 21:39
Austin BerenyiAustin Berenyi
14510
add a comment |
0
I have a function that passes in a string to determine what class my destination vc will be once I navigate. I'm also passing data to vc regardless of which class vc ends up being cast as. However, I'm getting an expected error of
VAlue of type 'UIViewController?' has no member ....
since vc hasn't been cast as any subclass yet.
func passAndNavigateResultsFor(surveyName: String){
let storyboard = UIStoryboard(name: "Main", bundle: nil)
var vc = storyboard.instantiateInitialViewController()
//Determining which class vc will be cast as
if surveyName == "EFDizzinessSurveyTask" {
let vc = storyboard.instantiateViewController(withIdentifier :surveyName) as! EFDizzinessSurveyResults
} else if surveyName == "EFHipArthritisSurveyTask" {
let vc = storyboard.instantiateViewController(withIdentifier :surveyName) as! EFHipArthritisSurveyResults
} else if surveyName == "EFKoosKneeSurveyTask" {
let vc = storyboard.instantiateViewController(withIdentifier :surveyName) as! EFKoosKneeSurveyResults
} else if surveyName == "EFLEFSSurveyTask" {
let vc = storyboard.instantiateViewController(withIdentifier :surveyName) as! EFLEFSSurveyResults
} else if surveyName == "EFQuickDASHSurveyTask" {
let vc = storyboard.instantiateViewController(withIdentifier :surveyName) as! EFQuickDASHSurveyResults
} else if surveyName == "EFNeckDisabilitySurveyTask" {
let vc = storyboard.instantiateViewController(withIdentifier :surveyName) as! EFNeckDisabilitySurveyResults
}
//Data that I want to pass through regardless of which class vc is cast as
if (firstNameResult != nil) && (lastNameResult != nil) {
self.fullName = self.firstNameResult! + " " + self.lastNameResult!
vc.nameText = self.fullName!
}
if painLevelResult != nil {
vc.painLevelText = String(describing: painLevelResult!)
}
if careSatisfactionResult != nil {
vc.careSatisfactionText = String(describing: careSatisfactionResult!)
}
if rateProgressResult != nil {
vc.rateProgressText = String(describing: rateProgressResult!)
}
if therapyGoalsResult != nil {
vc.therapyGoalsText = String(describing: therapyGoalsResult!)
}
if step1Result != nil {
vc.step1Text = String(describing: step1Result!)
}
if step2Result != nil {
vc.step2Text = String(describing: step2Result!)
}
if step3Result != nil {
vc.step3Text = String(describing: step3Result!)
}
if step4Result != nil {
vc.step4Text = String(describing: step4Result!)
}
}
Is there a way to fix this problem, or should I look at a solution like prepareForSegue instead?
ios swift
asked Nov 24 '18 at 21:39
Austin BerenyiAustin Berenyi
14510
3
If all view controllers contain all properties likepainLevelTextandstep2Textcreate a base class declaring all properties and make your....Resultsclasses subclasses of this base class. Consider that all instantiated controllers in theif - else ifchain will never be used. You should get a warning about that.
– vadian
Nov 24 '18 at 22:01
+1 to @vadian comment. Why do you thinkprepareForSeguewould work? It's equivalent to coding a push/pop (actually only a pop) to the VC stack. If you want VC #3 to get a variable that is passed between VC #1 and VC #2, that won't do it.
– dfd
Nov 24 '18 at 23:35
add a comment |
0
0
0
I have a function that passes in a string to determine what class my destination vc will be once I navigate. I'm also passing data to vc regardless of which class vc ends up being cast as. However, I'm getting an expected error of
VAlue of type 'UIViewController?' has no member ....
since vc hasn't been cast as any subclass yet.
func passAndNavigateResultsFor(surveyName: String){
let storyboard = UIStoryboard(name: "Main", bundle: nil)
var vc = storyboard.instantiateInitialViewController()
//Determining which class vc will be cast as
if surveyName == "EFDizzinessSurveyTask" {
let vc = storyboard.instantiateViewController(withIdentifier :surveyName) as! EFDizzinessSurveyResults
} else if surveyName == "EFHipArthritisSurveyTask" {
let vc = storyboard.instantiateViewController(withIdentifier :surveyName) as! EFHipArthritisSurveyResults
} else if surveyName == "EFKoosKneeSurveyTask" {
let vc = storyboard.instantiateViewController(withIdentifier :surveyName) as! EFKoosKneeSurveyResults
} else if surveyName == "EFLEFSSurveyTask" {
let vc = storyboard.instantiateViewController(withIdentifier :surveyName) as! EFLEFSSurveyResults
} else if surveyName == "EFQuickDASHSurveyTask" {
let vc = storyboard.instantiateViewController(withIdentifier :surveyName) as! EFQuickDASHSurveyResults
} else if surveyName == "EFNeckDisabilitySurveyTask" {
let vc = storyboard.instantiateViewController(withIdentifier :surveyName) as! EFNeckDisabilitySurveyResults
}
//Data that I want to pass through regardless of which class vc is cast as
if (firstNameResult != nil) && (lastNameResult != nil) {
self.fullName = self.firstNameResult! + " " + self.lastNameResult!
vc.nameText = self.fullName!
}
if painLevelResult != nil {
vc.painLevelText = String(describing: painLevelResult!)
}
if careSatisfactionResult != nil {
vc.careSatisfactionText = String(describing: careSatisfactionResult!)
}
if rateProgressResult != nil {
vc.rateProgressText = String(describing: rateProgressResult!)
}
if therapyGoalsResult != nil {
vc.therapyGoalsText = String(describing: therapyGoalsResult!)
}
if step1Result != nil {
vc.step1Text = String(describing: step1Result!)
}
if step2Result != nil {
vc.step2Text = String(describing: step2Result!)
}
if step3Result != nil {
vc.step3Text = String(describing: step3Result!)
}
if step4Result != nil {
vc.step4Text = String(describing: step4Result!)
}
}
Is there a way to fix this problem, or should I look at a solution like prepareForSegue instead?
ios swift
asked Nov 24 '18 at 21:39
Austin BerenyiAustin Berenyi
14510
I have a function that passes in a string to determine what class my destination vc will be once I navigate. I'm also passing data to vc regardless of which class vc ends up being cast as. However, I'm getting an expected error of
VAlue of type 'UIViewController?' has no member ....
since vc hasn't been cast as any subclass yet.
func passAndNavigateResultsFor(surveyName: String){
let storyboard = UIStoryboard(name: "Main", bundle: nil)
var vc = storyboard.instantiateInitialViewController()
//Determining which class vc will be cast as
if surveyName == "EFDizzinessSurveyTask" {
let vc = storyboard.instantiateViewController(withIdentifier :surveyName) as! EFDizzinessSurveyResults
} else if surveyName == "EFHipArthritisSurveyTask" {
let vc = storyboard.instantiateViewController(withIdentifier :surveyName) as! EFHipArthritisSurveyResults
} else if surveyName == "EFKoosKneeSurveyTask" {
let vc = storyboard.instantiateViewController(withIdentifier :surveyName) as! EFKoosKneeSurveyResults
} else if surveyName == "EFLEFSSurveyTask" {
let vc = storyboard.instantiateViewController(withIdentifier :surveyName) as! EFLEFSSurveyResults
} else if surveyName == "EFQuickDASHSurveyTask" {
let vc = storyboard.instantiateViewController(withIdentifier :surveyName) as! EFQuickDASHSurveyResults
} else if surveyName == "EFNeckDisabilitySurveyTask" {
let vc = storyboard.instantiateViewController(withIdentifier :surveyName) as! EFNeckDisabilitySurveyResults
}
//Data that I want to pass through regardless of which class vc is cast as
if (firstNameResult != nil) && (lastNameResult != nil) {
self.fullName = self.firstNameResult! + " " + self.lastNameResult!
vc.nameText = self.fullName!
}
if painLevelResult != nil {
vc.painLevelText = String(describing: painLevelResult!)
}
if careSatisfactionResult != nil {
vc.careSatisfactionText = String(describing: careSatisfactionResult!)
}
if rateProgressResult != nil {
vc.rateProgressText = String(describing: rateProgressResult!)
}
if therapyGoalsResult != nil {
vc.therapyGoalsText = String(describing: therapyGoalsResult!)
}
if step1Result != nil {
vc.step1Text = String(describing: step1Result!)
}
if step2Result != nil {
vc.step2Text = String(describing: step2Result!)
}
if step3Result != nil {
vc.step3Text = String(describing: step3Result!)
}
if step4Result != nil {
vc.step4Text = String(describing: step4Result!)
}
}
Is there a way to fix this problem, or should I look at a solution like prepareForSegue instead?
ios swift
ios swift
asked Nov 24 '18 at 21:39
Austin BerenyiAustin Berenyi
14510
asked Nov 24 '18 at 21:39
Austin BerenyiAustin Berenyi
14510
asked Nov 24 '18 at 21:39
Austin BerenyiAustin Berenyi
14510
asked Nov 24 '18 at 21:39
Austin BerenyiAustin Berenyi
14510
asked Nov 24 '18 at 21:39
Austin BerenyiAustin Berenyi
14510
14510
3
If all view controllers contain all properties likepainLevelTextandstep2Textcreate a base class declaring all properties and make your....Resultsclasses subclasses of this base class. Consider that all instantiated controllers in theif - else ifchain will never be used. You should get a warning about that.
– vadian
Nov 24 '18 at 22:01
+1 to @vadian comment. Why do you thinkprepareForSeguewould work? It's equivalent to coding a push/pop (actually only a pop) to the VC stack. If you want VC #3 to get a variable that is passed between VC #1 and VC #2, that won't do it.
– dfd
Nov 24 '18 at 23:35
add a comment |
3
If all view controllers contain all properties likepainLevelTextandstep2Textcreate a base class declaring all properties and make your....Resultsclasses subclasses of this base class. Consider that all instantiated controllers in theif - else ifchain will never be used. You should get a warning about that.
– vadian
Nov 24 '18 at 22:01
+1 to @vadian comment. Why do you thinkprepareForSeguewould work? It's equivalent to coding a push/pop (actually only a pop) to the VC stack. If you want VC #3 to get a variable that is passed between VC #1 and VC #2, that won't do it.
– dfd
Nov 24 '18 at 23:35
3
3
If all view controllers contain all properties like
painLevelText and step2Text create a base class declaring all properties and make your ....Results classes subclasses of this base class. Consider that all instantiated controllers in the if - else if chain will never be used. You should get a warning about that.– vadian
Nov 24 '18 at 22:01
If all view controllers contain all properties like
painLevelText and step2Text create a base class declaring all properties and make your ....Results classes subclasses of this base class. Consider that all instantiated controllers in the if - else if chain will never be used. You should get a warning about that.– vadian
Nov 24 '18 at 22:01
+1 to @vadian comment. Why do you think
prepareForSegue would work? It's equivalent to coding a push/pop (actually only a pop) to the VC stack. If you want VC #3 to get a variable that is passed between VC #1 and VC #2, that won't do it.– dfd
Nov 24 '18 at 23:35
+1 to @vadian comment. Why do you think
prepareForSegue would work? It's equivalent to coding a push/pop (actually only a pop) to the VC stack. If you want VC #3 to get a variable that is passed between VC #1 and VC #2, that won't do it.– dfd
Nov 24 '18 at 23:35
add a comment |
1 Answer
1
active
oldest
votes
0
What is the exact error being thrown? What member does it not exactly have?
Personally I agree with you and would use prepare for segue like this:
override func prepare(for segue: UIStoryboardSegue, sender: Any?) {
if let yourVC = segue.destination as? YourViewController {
yourVC.painLevelText = painLevelText
}
}
You could find, cast, and prepare the correct VC in there.
If you are having problems with properties not found then you should consider creating a superclass for your VC's to store properties like painLevelText
answered Nov 24 '18 at 21:52
cevalloacevalloa
1024
@dfd the code looks like OP is trying to assign the type of ViewController at instantiation and then access a property. Prepare for segue offers a better solution instead of accessing the properties after instantiation. I cannot confirm if those properties were already created but I included it for clarification, thanks
– cevalloa
Nov 25 '18 at 0:08
add a comment |
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1 Answer
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1 Answer
1
active
oldest
votes
active
oldest
votes
active
oldest
votes
0
What is the exact error being thrown? What member does it not exactly have?
Personally I agree with you and would use prepare for segue like this:
override func prepare(for segue: UIStoryboardSegue, sender: Any?) {
if let yourVC = segue.destination as? YourViewController {
yourVC.painLevelText = painLevelText
}
}
You could find, cast, and prepare the correct VC in there.
If you are having problems with properties not found then you should consider creating a superclass for your VC's to store properties like painLevelText
answered Nov 24 '18 at 21:52
cevalloacevalloa
1024
@dfd the code looks like OP is trying to assign the type of ViewController at instantiation and then access a property. Prepare for segue offers a better solution instead of accessing the properties after instantiation. I cannot confirm if those properties were already created but I included it for clarification, thanks
– cevalloa
Nov 25 '18 at 0:08
add a comment |
0
What is the exact error being thrown? What member does it not exactly have?
Personally I agree with you and would use prepare for segue like this:
override func prepare(for segue: UIStoryboardSegue, sender: Any?) {
if let yourVC = segue.destination as? YourViewController {
yourVC.painLevelText = painLevelText
}
}
You could find, cast, and prepare the correct VC in there.
If you are having problems with properties not found then you should consider creating a superclass for your VC's to store properties like painLevelText
answered Nov 24 '18 at 21:52
cevalloacevalloa
1024
@dfd the code looks like OP is trying to assign the type of ViewController at instantiation and then access a property. Prepare for segue offers a better solution instead of accessing the properties after instantiation. I cannot confirm if those properties were already created but I included it for clarification, thanks
– cevalloa
Nov 25 '18 at 0:08
add a comment |
0
0
0
What is the exact error being thrown? What member does it not exactly have?
Personally I agree with you and would use prepare for segue like this:
override func prepare(for segue: UIStoryboardSegue, sender: Any?) {
if let yourVC = segue.destination as? YourViewController {
yourVC.painLevelText = painLevelText
}
}
You could find, cast, and prepare the correct VC in there.
If you are having problems with properties not found then you should consider creating a superclass for your VC's to store properties like painLevelText
answered Nov 24 '18 at 21:52
cevalloacevalloa
1024
What is the exact error being thrown? What member does it not exactly have?
Personally I agree with you and would use prepare for segue like this:
override func prepare(for segue: UIStoryboardSegue, sender: Any?) {
if let yourVC = segue.destination as? YourViewController {
yourVC.painLevelText = painLevelText
}
}
You could find, cast, and prepare the correct VC in there.
If you are having problems with properties not found then you should consider creating a superclass for your VC's to store properties like painLevelText
answered Nov 24 '18 at 21:52
cevalloacevalloa
1024
edited Nov 24 '18 at 23:59
answered Nov 24 '18 at 21:52
cevalloacevalloa
1024
answered Nov 24 '18 at 21:52
cevalloacevalloa
1024
answered Nov 24 '18 at 21:52
cevalloacevalloa
1024
1024
@dfd the code looks like OP is trying to assign the type of ViewController at instantiation and then access a property. Prepare for segue offers a better solution instead of accessing the properties after instantiation. I cannot confirm if those properties were already created but I included it for clarification, thanks
– cevalloa
Nov 25 '18 at 0:08
add a comment |
@dfd the code looks like OP is trying to assign the type of ViewController at instantiation and then access a property. Prepare for segue offers a better solution instead of accessing the properties after instantiation. I cannot confirm if those properties were already created but I included it for clarification, thanks
– cevalloa
Nov 25 '18 at 0:08
@dfd the code looks like OP is trying to assign the type of ViewController at instantiation and then access a property. Prepare for segue offers a better solution instead of accessing the properties after instantiation. I cannot confirm if those properties were already created but I included it for clarification, thanks
– cevalloa
Nov 25 '18 at 0:08
@dfd the code looks like OP is trying to assign the type of ViewController at instantiation and then access a property. Prepare for segue offers a better solution instead of accessing the properties after instantiation. I cannot confirm if those properties were already created but I included it for clarification, thanks
– cevalloa
Nov 25 '18 at 0:08
add a comment |
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3
If all view controllers contain all properties like
painLevelTextandstep2Textcreate a base class declaring all properties and make your....Resultsclasses subclasses of this base class. Consider that all instantiated controllers in theif - else ifchain will never be used. You should get a warning about that.– vadian
Nov 24 '18 at 22:01
+1 to @vadian comment. Why do you think
prepareForSeguewould work? It's equivalent to coding a push/pop (actually only a pop) to the VC stack. If you want VC #3 to get a variable that is passed between VC #1 and VC #2, that won't do it.– dfd
Nov 24 '18 at 23:35