change background color of all view controllers if all classes are called (swift4)
0
When the user visits all three view controllers in no particular order. I want all of the view controllers in this program to turn green. But only if all three classes are visited. I don't know if this is a coredata or userdefulat thing.
import UIKit
class oneV: UIViewController {
override func viewDidLoad() {
super.viewDidLoad()
}
}
class twoV: UIViewController {
override func viewDidLoad() {
super.viewDidLoad()
}
}
class threeV: UIViewController {
override func viewDidLoad() {
super.viewDidLoad()
}
}
core-data global-variables swift4 background-color userdefaults
edited Nov 22 '18 at 5:05
hardik parmar
669413
asked Nov 22 '18 at 4:53
Sam BurnsSam Burns
44412
add a comment |
0
When the user visits all three view controllers in no particular order. I want all of the view controllers in this program to turn green. But only if all three classes are visited. I don't know if this is a coredata or userdefulat thing.
import UIKit
class oneV: UIViewController {
override func viewDidLoad() {
super.viewDidLoad()
}
}
class twoV: UIViewController {
override func viewDidLoad() {
super.viewDidLoad()
}
}
class threeV: UIViewController {
override func viewDidLoad() {
super.viewDidLoad()
}
}
core-data global-variables swift4 background-color userdefaults
edited Nov 22 '18 at 5:05
hardik parmar
669413
asked Nov 22 '18 at 4:53
Sam BurnsSam Burns
44412
you want to flip the color right away ?
– 7bebMrto
Nov 22 '18 at 11:47
add a comment |
0
0
0
When the user visits all three view controllers in no particular order. I want all of the view controllers in this program to turn green. But only if all three classes are visited. I don't know if this is a coredata or userdefulat thing.
import UIKit
class oneV: UIViewController {
override func viewDidLoad() {
super.viewDidLoad()
}
}
class twoV: UIViewController {
override func viewDidLoad() {
super.viewDidLoad()
}
}
class threeV: UIViewController {
override func viewDidLoad() {
super.viewDidLoad()
}
}
core-data global-variables swift4 background-color userdefaults
edited Nov 22 '18 at 5:05
hardik parmar
669413
asked Nov 22 '18 at 4:53
Sam BurnsSam Burns
44412
When the user visits all three view controllers in no particular order. I want all of the view controllers in this program to turn green. But only if all three classes are visited. I don't know if this is a coredata or userdefulat thing.
import UIKit
class oneV: UIViewController {
override func viewDidLoad() {
super.viewDidLoad()
}
}
class twoV: UIViewController {
override func viewDidLoad() {
super.viewDidLoad()
}
}
class threeV: UIViewController {
override func viewDidLoad() {
super.viewDidLoad()
}
}
core-data global-variables swift4 background-color userdefaults
core-data global-variables swift4 background-color userdefaults
edited Nov 22 '18 at 5:05
hardik parmar
669413
asked Nov 22 '18 at 4:53
Sam BurnsSam Burns
44412
edited Nov 22 '18 at 5:05
hardik parmar
669413
asked Nov 22 '18 at 4:53
Sam BurnsSam Burns
44412
edited Nov 22 '18 at 5:05
hardik parmar
669413
edited Nov 22 '18 at 5:05
hardik parmar
669413
edited Nov 22 '18 at 5:05
hardik parmar
669413
669413
asked Nov 22 '18 at 4:53
Sam BurnsSam Burns
44412
asked Nov 22 '18 at 4:53
Sam BurnsSam Burns
44412
asked Nov 22 '18 at 4:53
Sam BurnsSam Burns
44412
44412
you want to flip the color right away ?
– 7bebMrto
Nov 22 '18 at 11:47
add a comment |
you want to flip the color right away ?
– 7bebMrto
Nov 22 '18 at 11:47
you want to flip the color right away ?
– 7bebMrto
Nov 22 '18 at 11:47
you want to flip the color right away ?
– 7bebMrto
Nov 22 '18 at 11:47
add a comment |
1 Answer
1
active
oldest
votes
0
UserDefaults Will be great for this, saving a flag for each UIViewController in its viewDidLoad function.
Then adding up those three flags into one, and check it in viewWillAppear in each UIViewController.
Check this Code Below.
// First create this extension to check on each value
public extension UIViewController {
func isAllVistied() -> Bool {
let a = UserDefaults.standard.bool(forKey: "VC1") // Key used to save inside the viewController
let b = UserDefaults.standard.bool(forKey: "VC2")
let c = UserDefaults.standard.bool(forKey: "VC3")
if a && b && c {
return true
} else {
return false
}
}
}
Usage: In each UIViewController use this code:
class ViewController: UIViewController {
override func viewDidLoad() {
super.viewDidLoad()
UserDefaults.standard.set(true, forKey: "VC1") //Key changes based on the current viewController used in example (VC1, VC2, VC3)
}
override func viewWillAppear(_ animated: Bool) {
if self.isAllVistied() {
view.backgroundColor = .green
}
}
}
answered Nov 22 '18 at 11:53
7bebMrto7bebMrto
1,5531418
This works well. I would like to know how the first time all of the classes are triggered it goes to green but anything equal to or greater than 2 it goes to red. So for the first hit green then once they are all called again red? Thanks again for your help?
– Sam Burns
Nov 23 '18 at 0:54
add a comment |
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1 Answer
1
active
oldest
votes
1 Answer
1
active
oldest
votes
active
oldest
votes
active
oldest
votes
0
UserDefaults Will be great for this, saving a flag for each UIViewController in its viewDidLoad function.
Then adding up those three flags into one, and check it in viewWillAppear in each UIViewController.
Check this Code Below.
// First create this extension to check on each value
public extension UIViewController {
func isAllVistied() -> Bool {
let a = UserDefaults.standard.bool(forKey: "VC1") // Key used to save inside the viewController
let b = UserDefaults.standard.bool(forKey: "VC2")
let c = UserDefaults.standard.bool(forKey: "VC3")
if a && b && c {
return true
} else {
return false
}
}
}
Usage: In each UIViewController use this code:
class ViewController: UIViewController {
override func viewDidLoad() {
super.viewDidLoad()
UserDefaults.standard.set(true, forKey: "VC1") //Key changes based on the current viewController used in example (VC1, VC2, VC3)
}
override func viewWillAppear(_ animated: Bool) {
if self.isAllVistied() {
view.backgroundColor = .green
}
}
}
answered Nov 22 '18 at 11:53
7bebMrto7bebMrto
1,5531418
This works well. I would like to know how the first time all of the classes are triggered it goes to green but anything equal to or greater than 2 it goes to red. So for the first hit green then once they are all called again red? Thanks again for your help?
– Sam Burns
Nov 23 '18 at 0:54
add a comment |
0
UserDefaults Will be great for this, saving a flag for each UIViewController in its viewDidLoad function.
Then adding up those three flags into one, and check it in viewWillAppear in each UIViewController.
Check this Code Below.
// First create this extension to check on each value
public extension UIViewController {
func isAllVistied() -> Bool {
let a = UserDefaults.standard.bool(forKey: "VC1") // Key used to save inside the viewController
let b = UserDefaults.standard.bool(forKey: "VC2")
let c = UserDefaults.standard.bool(forKey: "VC3")
if a && b && c {
return true
} else {
return false
}
}
}
Usage: In each UIViewController use this code:
class ViewController: UIViewController {
override func viewDidLoad() {
super.viewDidLoad()
UserDefaults.standard.set(true, forKey: "VC1") //Key changes based on the current viewController used in example (VC1, VC2, VC3)
}
override func viewWillAppear(_ animated: Bool) {
if self.isAllVistied() {
view.backgroundColor = .green
}
}
}
answered Nov 22 '18 at 11:53
7bebMrto7bebMrto
1,5531418
This works well. I would like to know how the first time all of the classes are triggered it goes to green but anything equal to or greater than 2 it goes to red. So for the first hit green then once they are all called again red? Thanks again for your help?
– Sam Burns
Nov 23 '18 at 0:54
add a comment |
0
0
0
UserDefaults Will be great for this, saving a flag for each UIViewController in its viewDidLoad function.
Then adding up those three flags into one, and check it in viewWillAppear in each UIViewController.
Check this Code Below.
// First create this extension to check on each value
public extension UIViewController {
func isAllVistied() -> Bool {
let a = UserDefaults.standard.bool(forKey: "VC1") // Key used to save inside the viewController
let b = UserDefaults.standard.bool(forKey: "VC2")
let c = UserDefaults.standard.bool(forKey: "VC3")
if a && b && c {
return true
} else {
return false
}
}
}
Usage: In each UIViewController use this code:
class ViewController: UIViewController {
override func viewDidLoad() {
super.viewDidLoad()
UserDefaults.standard.set(true, forKey: "VC1") //Key changes based on the current viewController used in example (VC1, VC2, VC3)
}
override func viewWillAppear(_ animated: Bool) {
if self.isAllVistied() {
view.backgroundColor = .green
}
}
}
answered Nov 22 '18 at 11:53
7bebMrto7bebMrto
1,5531418
UserDefaults Will be great for this, saving a flag for each UIViewController in its viewDidLoad function.
Then adding up those three flags into one, and check it in viewWillAppear in each UIViewController.
Check this Code Below.
// First create this extension to check on each value
public extension UIViewController {
func isAllVistied() -> Bool {
let a = UserDefaults.standard.bool(forKey: "VC1") // Key used to save inside the viewController
let b = UserDefaults.standard.bool(forKey: "VC2")
let c = UserDefaults.standard.bool(forKey: "VC3")
if a && b && c {
return true
} else {
return false
}
}
}
Usage: In each UIViewController use this code:
class ViewController: UIViewController {
override func viewDidLoad() {
super.viewDidLoad()
UserDefaults.standard.set(true, forKey: "VC1") //Key changes based on the current viewController used in example (VC1, VC2, VC3)
}
override func viewWillAppear(_ animated: Bool) {
if self.isAllVistied() {
view.backgroundColor = .green
}
}
}
answered Nov 22 '18 at 11:53
7bebMrto7bebMrto
1,5531418
answered Nov 22 '18 at 11:53
7bebMrto7bebMrto
1,5531418
answered Nov 22 '18 at 11:53
7bebMrto7bebMrto
1,5531418
answered Nov 22 '18 at 11:53
7bebMrto7bebMrto
1,5531418
1,5531418
This works well. I would like to know how the first time all of the classes are triggered it goes to green but anything equal to or greater than 2 it goes to red. So for the first hit green then once they are all called again red? Thanks again for your help?
– Sam Burns
Nov 23 '18 at 0:54
add a comment |
This works well. I would like to know how the first time all of the classes are triggered it goes to green but anything equal to or greater than 2 it goes to red. So for the first hit green then once they are all called again red? Thanks again for your help?
– Sam Burns
Nov 23 '18 at 0:54
This works well. I would like to know how the first time all of the classes are triggered it goes to green but anything equal to or greater than 2 it goes to red. So for the first hit green then once they are all called again red? Thanks again for your help?
– Sam Burns
Nov 23 '18 at 0:54
This works well. I would like to know how the first time all of the classes are triggered it goes to green but anything equal to or greater than 2 it goes to red. So for the first hit green then once they are all called again red? Thanks again for your help?
– Sam Burns
Nov 23 '18 at 0:54
add a comment |
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you want to flip the color right away ?
– 7bebMrto
Nov 22 '18 at 11:47