Mixing
Can UIImagePickerController be used directly on story board?
I have an impression that ViewController usage are similar: on story board, we drag an UIViewController onto scene, then change its class type, e.g. to UIImagePickerController. (I want to make a dedicated scene for picking images)
But later I find that UIImagePickerController won't work if I directly subclass:
class TestUIImagePickerController: UIImagePickerController, UIImagePickerControllerDelegate, UINavigationControllerDelegate {
override func viewDidLoad() {
super.viewDidLoad()
self.sourceType = .photoLibrary
self.delegate = self
// self.present(self, animated: true) // either comment it out or not, both way won't work.
}
But it works only if I put an UIViewController on storyboard, then construct an UIImagePickerController programmatically:
class SecondTestUIImagePickerController: UIViewController, UIImagePickerControllerDelegate, UINavigationControllerDelegate {
override func viewDidLoad() {
super.viewDidLoad()
let picker = UIImagePickerController()
picker.sourceType = .photoLibrary
picker.delegate = self
self.present(picker, animated: true)
}
May I know whether I missed anything in the first usage example? And is it a must to create UIImagePickerController programmatically then present it via an agent view controller (UIVIewController)?
ios swift uiimagepickercontroller
edited Jan 2 at 2:19
rmaddy
245k27324388
asked Jan 2 at 2:16
modellermodeller
1,85211227
add a comment |
I have an impression that ViewController usage are similar: on story board, we drag an UIViewController onto scene, then change its class type, e.g. to UIImagePickerController. (I want to make a dedicated scene for picking images)
But later I find that UIImagePickerController won't work if I directly subclass:
class TestUIImagePickerController: UIImagePickerController, UIImagePickerControllerDelegate, UINavigationControllerDelegate {
override func viewDidLoad() {
super.viewDidLoad()
self.sourceType = .photoLibrary
self.delegate = self
// self.present(self, animated: true) // either comment it out or not, both way won't work.
}
But it works only if I put an UIViewController on storyboard, then construct an UIImagePickerController programmatically:
class SecondTestUIImagePickerController: UIViewController, UIImagePickerControllerDelegate, UINavigationControllerDelegate {
override func viewDidLoad() {
super.viewDidLoad()
let picker = UIImagePickerController()
picker.sourceType = .photoLibrary
picker.delegate = self
self.present(picker, animated: true)
}
May I know whether I missed anything in the first usage example? And is it a must to create UIImagePickerController programmatically then present it via an agent view controller (UIVIewController)?
ios swift uiimagepickercontroller
edited Jan 2 at 2:19
rmaddy
245k27324388
asked Jan 2 at 2:16
modellermodeller
1,85211227
add a comment |
I have an impression that ViewController usage are similar: on story board, we drag an UIViewController onto scene, then change its class type, e.g. to UIImagePickerController. (I want to make a dedicated scene for picking images)
But later I find that UIImagePickerController won't work if I directly subclass:
class TestUIImagePickerController: UIImagePickerController, UIImagePickerControllerDelegate, UINavigationControllerDelegate {
override func viewDidLoad() {
super.viewDidLoad()
self.sourceType = .photoLibrary
self.delegate = self
// self.present(self, animated: true) // either comment it out or not, both way won't work.
}
But it works only if I put an UIViewController on storyboard, then construct an UIImagePickerController programmatically:
class SecondTestUIImagePickerController: UIViewController, UIImagePickerControllerDelegate, UINavigationControllerDelegate {
override func viewDidLoad() {
super.viewDidLoad()
let picker = UIImagePickerController()
picker.sourceType = .photoLibrary
picker.delegate = self
self.present(picker, animated: true)
}
May I know whether I missed anything in the first usage example? And is it a must to create UIImagePickerController programmatically then present it via an agent view controller (UIVIewController)?
ios swift uiimagepickercontroller
edited Jan 2 at 2:19
rmaddy
245k27324388
asked Jan 2 at 2:16
modellermodeller
1,85211227
I have an impression that ViewController usage are similar: on story board, we drag an UIViewController onto scene, then change its class type, e.g. to UIImagePickerController. (I want to make a dedicated scene for picking images)
But later I find that UIImagePickerController won't work if I directly subclass:
class TestUIImagePickerController: UIImagePickerController, UIImagePickerControllerDelegate, UINavigationControllerDelegate {
override func viewDidLoad() {
super.viewDidLoad()
self.sourceType = .photoLibrary
self.delegate = self
// self.present(self, animated: true) // either comment it out or not, both way won't work.
}
But it works only if I put an UIViewController on storyboard, then construct an UIImagePickerController programmatically:
class SecondTestUIImagePickerController: UIViewController, UIImagePickerControllerDelegate, UINavigationControllerDelegate {
override func viewDidLoad() {
super.viewDidLoad()
let picker = UIImagePickerController()
picker.sourceType = .photoLibrary
picker.delegate = self
self.present(picker, animated: true)
}
May I know whether I missed anything in the first usage example? And is it a must to create UIImagePickerController programmatically then present it via an agent view controller (UIVIewController)?
ios swift uiimagepickercontroller
ios swift uiimagepickercontroller
edited Jan 2 at 2:19
rmaddy
245k27324388
asked Jan 2 at 2:16
modellermodeller
1,85211227
edited Jan 2 at 2:19
rmaddy
245k27324388
asked Jan 2 at 2:16
modellermodeller
1,85211227
edited Jan 2 at 2:19
rmaddy
245k27324388
edited Jan 2 at 2:19
rmaddy
245k27324388
edited Jan 2 at 2:19
rmaddy
245k27324388
245k27324388
asked Jan 2 at 2:16
modellermodeller
1,85211227
asked Jan 2 at 2:16
modellermodeller
1,85211227
asked Jan 2 at 2:16
modellermodeller
1,85211227
1,85211227
add a comment |
add a comment |
1 Answer
1
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oldest
votes
self.present(self, animated: true)
you can not self present self, use another ViewController to present UIImagePickerController
UIImagePickerController can be used on Story board, in your code, for example
class SecondTestUIImagePickerController: UIViewController, UIImagePickerControllerDelegate, UINavigationControllerDelegate {
override func viewDidLoad() {
super.viewDidLoad()
let sb = UIStoryboard(name: "ImagePickerStoryboard", bundle: nil)
let picker = sb.instantiateViewControllerWithIdentifier("ImagePicker") as! TestUIImagePickerController
self.present(picker, animated: true)
}
keep in mind that UIImagePickerController is subclass of UINavigationController
answered Jan 2 at 2:24
EthanEthan
353310
So, not all ViewControllers are equal (in terms of usage): i.e. UIViewController can be used directly by placement on Story board, but some view controller, e.g. UIImagePickerController, MUST use a proxy viewcontroller to present it. Am I right?
– modeller
Jan 2 at 2:34
update my answer, initTestUIImagePickerController(subclass of UIImagePickerController) from storyboard
– Ethan
Jan 2 at 2:53
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
self.present(self, animated: true)
you can not self present self, use another ViewController to present UIImagePickerController
UIImagePickerController can be used on Story board, in your code, for example
class SecondTestUIImagePickerController: UIViewController, UIImagePickerControllerDelegate, UINavigationControllerDelegate {
override func viewDidLoad() {
super.viewDidLoad()
let sb = UIStoryboard(name: "ImagePickerStoryboard", bundle: nil)
let picker = sb.instantiateViewControllerWithIdentifier("ImagePicker") as! TestUIImagePickerController
self.present(picker, animated: true)
}
keep in mind that UIImagePickerController is subclass of UINavigationController
answered Jan 2 at 2:24
EthanEthan
353310
So, not all ViewControllers are equal (in terms of usage): i.e. UIViewController can be used directly by placement on Story board, but some view controller, e.g. UIImagePickerController, MUST use a proxy viewcontroller to present it. Am I right?
– modeller
Jan 2 at 2:34
update my answer, initTestUIImagePickerController(subclass of UIImagePickerController) from storyboard
– Ethan
Jan 2 at 2:53
add a comment |
self.present(self, animated: true)
you can not self present self, use another ViewController to present UIImagePickerController
UIImagePickerController can be used on Story board, in your code, for example
class SecondTestUIImagePickerController: UIViewController, UIImagePickerControllerDelegate, UINavigationControllerDelegate {
override func viewDidLoad() {
super.viewDidLoad()
let sb = UIStoryboard(name: "ImagePickerStoryboard", bundle: nil)
let picker = sb.instantiateViewControllerWithIdentifier("ImagePicker") as! TestUIImagePickerController
self.present(picker, animated: true)
}
keep in mind that UIImagePickerController is subclass of UINavigationController
answered Jan 2 at 2:24
EthanEthan
353310
So, not all ViewControllers are equal (in terms of usage): i.e. UIViewController can be used directly by placement on Story board, but some view controller, e.g. UIImagePickerController, MUST use a proxy viewcontroller to present it. Am I right?
– modeller
Jan 2 at 2:34
update my answer, initTestUIImagePickerController(subclass of UIImagePickerController) from storyboard
– Ethan
Jan 2 at 2:53
add a comment |
self.present(self, animated: true)
you can not self present self, use another ViewController to present UIImagePickerController
UIImagePickerController can be used on Story board, in your code, for example
class SecondTestUIImagePickerController: UIViewController, UIImagePickerControllerDelegate, UINavigationControllerDelegate {
override func viewDidLoad() {
super.viewDidLoad()
let sb = UIStoryboard(name: "ImagePickerStoryboard", bundle: nil)
let picker = sb.instantiateViewControllerWithIdentifier("ImagePicker") as! TestUIImagePickerController
self.present(picker, animated: true)
}
keep in mind that UIImagePickerController is subclass of UINavigationController
answered Jan 2 at 2:24
EthanEthan
353310
self.present(self, animated: true)
you can not self present self, use another ViewController to present UIImagePickerController
UIImagePickerController can be used on Story board, in your code, for example
class SecondTestUIImagePickerController: UIViewController, UIImagePickerControllerDelegate, UINavigationControllerDelegate {
override func viewDidLoad() {
super.viewDidLoad()
let sb = UIStoryboard(name: "ImagePickerStoryboard", bundle: nil)
let picker = sb.instantiateViewControllerWithIdentifier("ImagePicker") as! TestUIImagePickerController
self.present(picker, animated: true)
}
keep in mind that UIImagePickerController is subclass of UINavigationController
answered Jan 2 at 2:24
EthanEthan
353310
edited Jan 2 at 2:50
answered Jan 2 at 2:24
EthanEthan
353310
answered Jan 2 at 2:24
EthanEthan
353310
answered Jan 2 at 2:24
EthanEthan
353310
353310
So, not all ViewControllers are equal (in terms of usage): i.e. UIViewController can be used directly by placement on Story board, but some view controller, e.g. UIImagePickerController, MUST use a proxy viewcontroller to present it. Am I right?
– modeller
Jan 2 at 2:34
update my answer, initTestUIImagePickerController(subclass of UIImagePickerController) from storyboard
– Ethan
Jan 2 at 2:53
add a comment |
So, not all ViewControllers are equal (in terms of usage): i.e. UIViewController can be used directly by placement on Story board, but some view controller, e.g. UIImagePickerController, MUST use a proxy viewcontroller to present it. Am I right?
– modeller
Jan 2 at 2:34
update my answer, initTestUIImagePickerController(subclass of UIImagePickerController) from storyboard
– Ethan
Jan 2 at 2:53
So, not all ViewControllers are equal (in terms of usage): i.e. UIViewController can be used directly by placement on Story board, but some view controller, e.g. UIImagePickerController, MUST use a proxy viewcontroller to present it. Am I right?
– modeller
Jan 2 at 2:34
So, not all ViewControllers are equal (in terms of usage): i.e. UIViewController can be used directly by placement on Story board, but some view controller, e.g. UIImagePickerController, MUST use a proxy viewcontroller to present it. Am I right?
– modeller
Jan 2 at 2:34
update my answer, init
TestUIImagePickerController(subclass of UIImagePickerController) from storyboard– Ethan
Jan 2 at 2:53
update my answer, init
TestUIImagePickerController(subclass of UIImagePickerController) from storyboard– Ethan
Jan 2 at 2:53
add a comment |
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