Swift iOS -UIImagePicker 的照片库在模拟器上显示,但在 运行 Xcode 时在实际设备上崩溃(不会显示)
Swift iOS -UIImagePicker's Photo Library Is Presented On Simulator But Crashes (won't present) On Actual Device While Running Xcode
我在 Swift 3、iOS 10.3 和 Xcode 8.3.3。
当我在模拟器上访问照片库时,UIImagePicker 没有问题,我可以选择照片。 当我尝试在实际设备(iPhone 7+)上访问照片库时,应用程序崩溃,因为 UIImagePicker 不会显示(我什至没有开始挑选照片)。奇怪的是在实际设备上 imagePicker 显示相机,我可以毫无问题地拍照。
即使我没有在这个问题中添加它,在我的实际代码中我有 api 权限 运行。在我的实际代码中,我使用了它们并将它们注释掉,但问题仍然存在:
import AVFoundation
//there is way more code then this I just put these here to show that I'm using them
PHPhotoLibrary.authorizationStatus()
PHPhotoLibrary.requestAuthorization()
AVCaptureDevice.authorizationStatus(forMediaType: ...)
AVCaptureDevice.requestAccess(forMediaType: ...)
更新: 我仍然没有解决问题,但我找到了更多信息。我一直在玩这个应用程序,在崩溃后我再次尝试了这个应用程序,它让我可以访问图书馆。我逐渐意识到,只要 Xcode 不是 运行,该应用程序就会让我访问 phone 上的图书馆。一旦我将 phone 重新插入 Xcode 并尝试再次访问该库,我就会崩溃。我不知道该怎么做。
只要Xcode没有连接到设备我就可以成功地从库中获取照片。使用模拟器我可以毫无问题地获取照片。在设备未连接到 Xcode 的情况下,我可以获得照片。但是,一旦设备和 Xcode 连接,我就会崩溃。我已经尝试用 3 种不同的方式(如下所述)初始化 UIImagePicker,看看它们中的任何一种是否会改变结果,但结果总是一样的。我的应用超过 100 类 和 50 个 vc,也许问题出在其他地方。但是,如果它发生在其他地方,那么当 Xcode 也没有连接到设备时它应该会崩溃。
在使用 UIImagepicker 的 类 中,我注释掉了所有不必要的代码,只关注库和相机按钮。一旦设备和 Xcode 交织在一起,崩溃总是发生。好消息是,一旦他们未连接,我就可以访问该库,这样用户就不会遇到问题,因为他们永远不会 Xcode 运行 我的应用程序。
需要注意的是,当设备和Xcode连接后,我可以使用相机并成功拍照。问题好像是调节到图书馆了。
这个问题我已经看过好几次了,但答案总是
"the permissions inside your info.plist have to be set"
在我的情况下,权限设置在 info.plist:
这是在模拟器的“设置”页面中设置为 "on" 的 Switch 的图片。我无法为实际设备的设置页面拍照,但相机和照片开关都设置为 "on"
我的代码:
MyController: UIViewController, UIImagePickerControllerDelegate, UINavigationControllerDelegate{
fileprivate var imagePicker = UIImagePickerController()
override func viewDidLoad() {
super.viewDidLoad()
imagePicker.delegate = self
}
@IBAction fileprivate func libraryButton(_ sender: UIButton){
self.imagePicker.sourceType = UIImagePickerControllerSourceType.photoLibrary
self.imagePicker.allowsEditing = false
presentViewController(self.imagePicker, animated: true, completion: nil)
}
@IBAction fileprivate func cameraButton(_ sender: UIButton){
self.imagePicker.sourceType = UIImagePickerControllerSourceType.camera
self.imagePicker.allowsEditing = false
present(self.imagePicker, animated: true, completion: nil)
}
func imagePickerController(_ picker: UIImagePickerController, didFinishPickingMediaWithInfo info: [String : Any]) {
if let myImage = info[UIImagePickerControllerOriginalImage] as? UIImage{
imageView.image = myImage
}
else if let myImage = info[UIImagePickerControllerEditedImage] as? UIImage{
imageView.image = myImage
}
else{"UIImagePicker Problem")
}
imagePicker.dismiss(animated: true, completion: nil)
}
func imagePickerControllerDidCancel(_ picker: UIImagePickerController) {
imagePicker.dismiss(animated: true, completion: nil)
}
}
}
我也试过:
fileprivate var imagePicker:UIImagePickerController?
@IBAction fileprivate func libraryButton(_ sender: UIButton){
self.imagePicker = UIImagePickerController()
self.imagePicker?.delegate = self
self.imagePicker?.sourceType = UIImagePickerControllerSourceType.photoLibrary
self.imagePicker?.allowsEditing = false
present(self.imagePicker!, animated: true, completion: nil)
}
@IBAction fileprivate func cameraButton(_ sender: UIButton){
self.imagePicker = UIImagePickerController()
self.imagePicker?.delegate = self
self.imagePicker?.sourceType = UIImagePickerControllerSourceType.camera
self.imagePicker?.allowsEditing = false
present(self.imagePicker!, animated: true, completion: nil)
}
我也试过:
fileprivate let imagePicker:UIImagePickerController?
override func viewDidLoad() {
super.viewDidLoad()
imagePicker = UIImagePickerController()
imagePicker!.delegate = self
}
@IBAction fileprivate func libraryButton(_ sender: UIButton){
imagePicker!.sourceType = UIImagePickerControllerSourceType.photoLibrary
imagePicker!.allowsEditing = false
present(imagePicker!, animated: true, completion: nil)
}
@IBAction fileprivate func cameraButton(_ sender: UIButton){
imagePicker!.sourceType = UIImagePickerControllerSourceType.camera
imagePicker!.allowsEditing = false
present(imagePicker!, animated: true, completion: nil)
}
这与设备和 Xcode 连接后我不断收到的崩溃信息相同:
libc++abi.dylib`__cxa_throw:
-> 0x18fd96e70 <+0>: stp x22, x21, [sp, #-0x30]!
0x18fd96e74 <+4>: stp x20, x19, [sp, #0x10]
0x18fd96e78 <+8>: stp x29, x30, [sp, #0x20]
0x18fd96e7c <+12>: add x29, sp, #0x20 ; =0x20
0x18fd96e80 <+16>: mov x19, x2
0x18fd96e84 <+20>: mov x20, x1
0x18fd96e88 <+24>: mov x21, x0
0x18fd96e8c <+28>: bl 0x18fd96a88 ; __cxa_get_globals
0x18fd96e90 <+32>: mov x22, x0
0x18fd96e94 <+36>: bl 0x18fd9756c ; std::get_unexpected()
0x18fd96e98 <+40>: stur x0, [x21, #-0x60]
0x18fd96e9c <+44>: bl 0x18fd975ac ; std::get_terminate()
0x18fd96ea0 <+48>: stur x0, [x21, #-0x58]
0x18fd96ea4 <+52>: stp x20, x19, [x21, #-0x70]
0x18fd96ea8 <+56>: mov x8, #0x434c000000000000
0x18fd96eac <+60>: movk x8, #0x4e47, lsl #32
0x18fd96eb0 <+64>: movk x8, #0x432b, lsl #16
0x18fd96eb4 <+68>: movk x8, #0x2b00
0x18fd96eb8 <+72>: mov x19, x21
0x18fd96ebc <+76>: str x8, [x19, #-0x20]!
0x18fd96ec0 <+80>: orr w8, wzr, #0x1
0x18fd96ec4 <+84>: stur x8, [x19, #-0x58]
0x18fd96ec8 <+88>: ldr w8, [x22, #0x8]
0x18fd96ecc <+92>: add w8, w8, #0x1 ; =0x1
0x18fd96ed0 <+96>: str w8, [x22, #0x8]
0x18fd96ed4 <+100>: adrp x8, 0
0x18fd96ed8 <+104>: add x8, x8, #0xef8 ; =0xef8
0x18fd96edc <+108>: str x8, [x19, #0x8]
0x18fd96ee0 <+112>: mov x0, x19
0x18fd96ee4 <+116>: bl 0x190433be4 ; _Unwind_RaiseException
0x18fd96ee8 <+120>: mov x0, x19
0x18fd96eec <+124>: bl 0x18fd96f20 ; __cxa_begin_catch
0x18fd96ef0 <+128>: ldur x0, [x21, #-0x58]
0x18fd96ef4 <+132>: bl 0x18fd975c4 ; std::__terminate(void (*)())
我的项目中的任何地方都没有 Unwind Segue,所以我不确定为什么会这样说。但无论它是否在模拟器上工作,它都应该在 phone 上工作,或者如果它在 phone 上不起作用,那么它也不应该在模拟器上工作。下面是崩溃报告和堆栈跟踪的片段。
错误报告:
我从设备上删除了该应用程序,关闭 Xcode,重新启动它,接受并允许它访问库,但还是出现了同样的问题。
知道问题出在哪里吗?
尝试使用下面的代码非常适合我
@IBAction func openLibraryButtonAction(_ sender: Any) {
if UIImagePickerController.isSourceTypeAvailable(UIImagePickerControllerSourceType.photoLibrary) {
let imagePicker = UIImagePickerController()
imagePicker.delegate = self
imagePicker.sourceType = UIImagePickerControllerSourceType.photoLibrary;
imagePicker.allowsEditing = true
self.present(imagePicker, animated: true, completion: nil)
}
}
@IBAction func takePhotoButtonAction(_ sender: Any)
{
if UIImagePickerController.isSourceTypeAvailable(UIImagePickerControllerSourceType.camera)
{
let imagePicker = UIImagePickerController()
imagePicker.delegate = self
imagePicker.sourceType = UIImagePickerControllerSourceType.camera;
imagePicker.allowsEditing = false
self.present(imagePicker, animated: true, completion: nil)
}
else
{
noCamera() //Calling alert of No Camera
}
}
func imagePickerController(_ picker: UIImagePickerController, didFinishPickingMediaWithInfo info: [String : Any])
{
chosenImage = info[UIImagePickerControllerOriginalImage] as! UIImage
dismiss(animated:true, completion: nil)
}
你代码的问题是UIImagePickerControllerSourceType.PhotoLibrary
,图片库改成.photoLibrary
p应该是小写
我将证明一些建议的合理性,然后粘贴结果片段。
- 确保从 UIViewController 继承,以便使用像 viewDidLoad() 这样的方法
- imagePicker 在初始化时设置,因此删除所有问号或
if let
链接。
- 为了保持一致性,只需删除不需要的'self.'
将任何冗余设置移动到 viewDidLoad()
class ViewController: UIViewController, UIImagePickerControllerDelegate, UINavigationControllerDelegate {
fileprivate let imagePicker = UIImagePickerController()
override func viewDidLoad() {
super.viewDidLoad()
imagePicker.delegate = self
imagePicker.allowsEditing = false
}
@IBAction fileprivate func libraryButton(_ sender: UIButton) {
imagePicker.sourceType = UIImagePickerControllerSourceType.photoLibrary
present(imagePicker, animated: true, completion: nil)
}
func imagePickerController(_ picker: UIImagePickerController, didFinishPickingMediaWithInfo info: [String : Any]) {
if let myImage = info[UIImagePickerControllerOriginalImage] as? UIImage{
//original image
}
else if let myImage = info[UIImagePickerControllerEditedImage] as? UIImage{
//edited image
}
else{
print("image picker problem")
}
imagePicker.dismiss(animated: true, completion: nil)
}
func imagePickerControllerDidCancel(_ picker: UIImagePickerController) {
imagePicker.dismiss(animated: true, completion: nil)
}
}
有了这些改变,你应该会很好。
您必须明确请求访问使用 UIImagePicker
的图片库。
比如PHPhotoLibrary.requestAuthorization
Ash Furrow 帮助我解决了这个问题,因为这是一个非常不明显的问题,可能是一个 api 错误。我为不熟悉解决该问题的过程的人发布了图片。
原来在 Breakpoint Navigator
里面我激活了 All Exceptions
。出于某种原因,当我的应用程序连接到 Xcode 并且 UIImagePicker 正在显示照片库时,触发了所有异常断点并且有轻微的延迟导致应用程序崩溃。延迟是几毫秒,但足够长,以至于应用程序认为存在问题。 Ash 说他以前从未见过这样的东西,并说我的照片库中可能有一张损坏的 jpg 照片,但这又是一个疯狂的猜测。简单的解决方案是停用或删除 All Exceptions 断点,问题就解决了。他确实说这可能是一个 api 问题,因为它仍然导致非常奇怪的崩溃。
需要注意的是,他说All Exceptions break point最好保持激活,因为它会早发现异常。我忘记了他的详细解释,但基本上最好继续使用,如果您 运行 遇到这个问题,只需停用它即可。
通过停用所有异常断点解决 UIImagePicker 库呈现崩溃的步骤:
- 在屏幕左侧的导航窗格中,左起第 7 个看起来像箭头的图标是断点导航器
All Exceptions 断点是activated/highlighted到蓝色
要停用所有例外,请单击突出显示的蓝色箭头或右键单击单词 All Exceptions
本身,然后从列表中选择禁用或删除
- 假设您选择禁用或单击蓝色箭头,它将被停用
- 显然,如果您选择删除,它将从断点导航器中删除,但如果您想再次添加它(或者如果您从来没有使用过它),那么您仍然必须在断点导航器中(第 1 步) ) 并在窗格的左下角按加号按钮并选择异常断点以添加它。
**- I'm also facing the same problem after selecting any image from gallery. after lots of effects I found this solution.**
if #available(iOS 14, *) {
var config = PHPickerConfiguration()
config.filter = .images
config.selectionLimit = 1
let picker = PHPickerViewController(configuration: config)
picker.delegate = self
self.currentController.present(picker, animated: true)
} else {
if UIImagePickerController.isSourceTypeAvailable(UIImagePickerController.SourceType.photoLibrary) {
self.imagePicker.delegate = self
self.imagePicker.allowsEditing = false
self.imagePicker.sourceType = .savedPhotosAlbum
self.currentController.present(imagePicker, animated: true, completion: nil)
} else {
let alert = UIAlertController(title: "Warning", message: "You don't have permission to access gallery.", preferredStyle: .alert)
alert.addAction(UIAlertAction(title: "OK", style: .default, handler: nil))
self.currentController.present(alert, animated: true, completion: nil)
}
}
extension USE_YOUR_CLASS_NAME: PHPickerViewControllerDelegate {
@available(iOS 14, *)
func picker(_ picker: PHPickerViewController, didFinishPicking results: [PHPickerResult]) {
guard let result = results.first else { return }
let jpeg = UTType.jpeg.identifier
let prov = result.itemProvider
prov.loadFileRepresentation(forTypeIdentifier: jpeg) { urlMaybe, errorMaybe in
guard let url = urlMaybe else { return }
let imageData:NSData = NSData(contentsOf: urlMaybe!)!
let image = UIImage(data: imageData as Data)
if image != nil {
// YOU'LL GET SELECTED IMAGE HERE..
}
}
}
}
extension USE_YOUR_CLASS_NAME: UINavigationControllerDelegate, UIImagePickerControllerDelegate {
func imagePickerController(_ picker: UIImagePickerController, didFinishPickingMediaWithInfo info: [UIImagePickerController.InfoKey : Any]) {
//guard let fileUrl = info[UIImagePickerController.InfoKey.originalImage] as? UIImage else { return }
debugPrint(selectedImgName)
if let chosenImage = info[.originalImage] as? UIImage {
// YOU'LL GET SELECTED IMAGE HERE..
}
}
func imagePickerControllerDidCancel(_ picker: UIImagePickerController) {
currentController.dismiss(animated: true, completion: nil)
}
}
我在 Swift 3、iOS 10.3 和 Xcode 8.3.3。
当我在模拟器上访问照片库时,UIImagePicker 没有问题,我可以选择照片。 当我尝试在实际设备(iPhone 7+)上访问照片库时,应用程序崩溃,因为 UIImagePicker 不会显示(我什至没有开始挑选照片)。奇怪的是在实际设备上 imagePicker 显示相机,我可以毫无问题地拍照。
即使我没有在这个问题中添加它,在我的实际代码中我有 api 权限 运行。在我的实际代码中,我使用了它们并将它们注释掉,但问题仍然存在:
import AVFoundation
//there is way more code then this I just put these here to show that I'm using them
PHPhotoLibrary.authorizationStatus()
PHPhotoLibrary.requestAuthorization()
AVCaptureDevice.authorizationStatus(forMediaType: ...)
AVCaptureDevice.requestAccess(forMediaType: ...)
更新: 我仍然没有解决问题,但我找到了更多信息。我一直在玩这个应用程序,在崩溃后我再次尝试了这个应用程序,它让我可以访问图书馆。我逐渐意识到,只要 Xcode 不是 运行,该应用程序就会让我访问 phone 上的图书馆。一旦我将 phone 重新插入 Xcode 并尝试再次访问该库,我就会崩溃。我不知道该怎么做。
只要Xcode没有连接到设备我就可以成功地从库中获取照片。使用模拟器我可以毫无问题地获取照片。在设备未连接到 Xcode 的情况下,我可以获得照片。但是,一旦设备和 Xcode 连接,我就会崩溃。我已经尝试用 3 种不同的方式(如下所述)初始化 UIImagePicker,看看它们中的任何一种是否会改变结果,但结果总是一样的。我的应用超过 100 类 和 50 个 vc,也许问题出在其他地方。但是,如果它发生在其他地方,那么当 Xcode 也没有连接到设备时它应该会崩溃。
在使用 UIImagepicker 的 类 中,我注释掉了所有不必要的代码,只关注库和相机按钮。一旦设备和 Xcode 交织在一起,崩溃总是发生。好消息是,一旦他们未连接,我就可以访问该库,这样用户就不会遇到问题,因为他们永远不会 Xcode 运行 我的应用程序。
需要注意的是,当设备和Xcode连接后,我可以使用相机并成功拍照。问题好像是调节到图书馆了。
这个问题我已经看过好几次了,但答案总是
"the permissions inside your info.plist have to be set"
在我的情况下,权限设置在 info.plist:
这是在模拟器的“设置”页面中设置为 "on" 的 Switch 的图片。我无法为实际设备的设置页面拍照,但相机和照片开关都设置为 "on"
我的代码:
MyController: UIViewController, UIImagePickerControllerDelegate, UINavigationControllerDelegate{
fileprivate var imagePicker = UIImagePickerController()
override func viewDidLoad() {
super.viewDidLoad()
imagePicker.delegate = self
}
@IBAction fileprivate func libraryButton(_ sender: UIButton){
self.imagePicker.sourceType = UIImagePickerControllerSourceType.photoLibrary
self.imagePicker.allowsEditing = false
presentViewController(self.imagePicker, animated: true, completion: nil)
}
@IBAction fileprivate func cameraButton(_ sender: UIButton){
self.imagePicker.sourceType = UIImagePickerControllerSourceType.camera
self.imagePicker.allowsEditing = false
present(self.imagePicker, animated: true, completion: nil)
}
func imagePickerController(_ picker: UIImagePickerController, didFinishPickingMediaWithInfo info: [String : Any]) {
if let myImage = info[UIImagePickerControllerOriginalImage] as? UIImage{
imageView.image = myImage
}
else if let myImage = info[UIImagePickerControllerEditedImage] as? UIImage{
imageView.image = myImage
}
else{"UIImagePicker Problem")
}
imagePicker.dismiss(animated: true, completion: nil)
}
func imagePickerControllerDidCancel(_ picker: UIImagePickerController) {
imagePicker.dismiss(animated: true, completion: nil)
}
}
}
我也试过:
fileprivate var imagePicker:UIImagePickerController?
@IBAction fileprivate func libraryButton(_ sender: UIButton){
self.imagePicker = UIImagePickerController()
self.imagePicker?.delegate = self
self.imagePicker?.sourceType = UIImagePickerControllerSourceType.photoLibrary
self.imagePicker?.allowsEditing = false
present(self.imagePicker!, animated: true, completion: nil)
}
@IBAction fileprivate func cameraButton(_ sender: UIButton){
self.imagePicker = UIImagePickerController()
self.imagePicker?.delegate = self
self.imagePicker?.sourceType = UIImagePickerControllerSourceType.camera
self.imagePicker?.allowsEditing = false
present(self.imagePicker!, animated: true, completion: nil)
}
我也试过:
fileprivate let imagePicker:UIImagePickerController?
override func viewDidLoad() {
super.viewDidLoad()
imagePicker = UIImagePickerController()
imagePicker!.delegate = self
}
@IBAction fileprivate func libraryButton(_ sender: UIButton){
imagePicker!.sourceType = UIImagePickerControllerSourceType.photoLibrary
imagePicker!.allowsEditing = false
present(imagePicker!, animated: true, completion: nil)
}
@IBAction fileprivate func cameraButton(_ sender: UIButton){
imagePicker!.sourceType = UIImagePickerControllerSourceType.camera
imagePicker!.allowsEditing = false
present(imagePicker!, animated: true, completion: nil)
}
这与设备和 Xcode 连接后我不断收到的崩溃信息相同:
libc++abi.dylib`__cxa_throw:
-> 0x18fd96e70 <+0>: stp x22, x21, [sp, #-0x30]!
0x18fd96e74 <+4>: stp x20, x19, [sp, #0x10]
0x18fd96e78 <+8>: stp x29, x30, [sp, #0x20]
0x18fd96e7c <+12>: add x29, sp, #0x20 ; =0x20
0x18fd96e80 <+16>: mov x19, x2
0x18fd96e84 <+20>: mov x20, x1
0x18fd96e88 <+24>: mov x21, x0
0x18fd96e8c <+28>: bl 0x18fd96a88 ; __cxa_get_globals
0x18fd96e90 <+32>: mov x22, x0
0x18fd96e94 <+36>: bl 0x18fd9756c ; std::get_unexpected()
0x18fd96e98 <+40>: stur x0, [x21, #-0x60]
0x18fd96e9c <+44>: bl 0x18fd975ac ; std::get_terminate()
0x18fd96ea0 <+48>: stur x0, [x21, #-0x58]
0x18fd96ea4 <+52>: stp x20, x19, [x21, #-0x70]
0x18fd96ea8 <+56>: mov x8, #0x434c000000000000
0x18fd96eac <+60>: movk x8, #0x4e47, lsl #32
0x18fd96eb0 <+64>: movk x8, #0x432b, lsl #16
0x18fd96eb4 <+68>: movk x8, #0x2b00
0x18fd96eb8 <+72>: mov x19, x21
0x18fd96ebc <+76>: str x8, [x19, #-0x20]!
0x18fd96ec0 <+80>: orr w8, wzr, #0x1
0x18fd96ec4 <+84>: stur x8, [x19, #-0x58]
0x18fd96ec8 <+88>: ldr w8, [x22, #0x8]
0x18fd96ecc <+92>: add w8, w8, #0x1 ; =0x1
0x18fd96ed0 <+96>: str w8, [x22, #0x8]
0x18fd96ed4 <+100>: adrp x8, 0
0x18fd96ed8 <+104>: add x8, x8, #0xef8 ; =0xef8
0x18fd96edc <+108>: str x8, [x19, #0x8]
0x18fd96ee0 <+112>: mov x0, x19
0x18fd96ee4 <+116>: bl 0x190433be4 ; _Unwind_RaiseException
0x18fd96ee8 <+120>: mov x0, x19
0x18fd96eec <+124>: bl 0x18fd96f20 ; __cxa_begin_catch
0x18fd96ef0 <+128>: ldur x0, [x21, #-0x58]
0x18fd96ef4 <+132>: bl 0x18fd975c4 ; std::__terminate(void (*)())
我的项目中的任何地方都没有 Unwind Segue,所以我不确定为什么会这样说。但无论它是否在模拟器上工作,它都应该在 phone 上工作,或者如果它在 phone 上不起作用,那么它也不应该在模拟器上工作。下面是崩溃报告和堆栈跟踪的片段。
错误报告:
我从设备上删除了该应用程序,关闭 Xcode,重新启动它,接受并允许它访问库,但还是出现了同样的问题。
知道问题出在哪里吗?
尝试使用下面的代码非常适合我
@IBAction func openLibraryButtonAction(_ sender: Any) {
if UIImagePickerController.isSourceTypeAvailable(UIImagePickerControllerSourceType.photoLibrary) {
let imagePicker = UIImagePickerController()
imagePicker.delegate = self
imagePicker.sourceType = UIImagePickerControllerSourceType.photoLibrary;
imagePicker.allowsEditing = true
self.present(imagePicker, animated: true, completion: nil)
}
}
@IBAction func takePhotoButtonAction(_ sender: Any)
{
if UIImagePickerController.isSourceTypeAvailable(UIImagePickerControllerSourceType.camera)
{
let imagePicker = UIImagePickerController()
imagePicker.delegate = self
imagePicker.sourceType = UIImagePickerControllerSourceType.camera;
imagePicker.allowsEditing = false
self.present(imagePicker, animated: true, completion: nil)
}
else
{
noCamera() //Calling alert of No Camera
}
}
func imagePickerController(_ picker: UIImagePickerController, didFinishPickingMediaWithInfo info: [String : Any])
{
chosenImage = info[UIImagePickerControllerOriginalImage] as! UIImage
dismiss(animated:true, completion: nil)
}
你代码的问题是UIImagePickerControllerSourceType.PhotoLibrary
,图片库改成.photoLibrary
p应该是小写
我将证明一些建议的合理性,然后粘贴结果片段。
- 确保从 UIViewController 继承,以便使用像 viewDidLoad() 这样的方法
- imagePicker 在初始化时设置,因此删除所有问号或
if let
链接。 - 为了保持一致性,只需删除不需要的'self.'
将任何冗余设置移动到 viewDidLoad()
class ViewController: UIViewController, UIImagePickerControllerDelegate, UINavigationControllerDelegate { fileprivate let imagePicker = UIImagePickerController() override func viewDidLoad() { super.viewDidLoad() imagePicker.delegate = self imagePicker.allowsEditing = false } @IBAction fileprivate func libraryButton(_ sender: UIButton) { imagePicker.sourceType = UIImagePickerControllerSourceType.photoLibrary present(imagePicker, animated: true, completion: nil) } func imagePickerController(_ picker: UIImagePickerController, didFinishPickingMediaWithInfo info: [String : Any]) { if let myImage = info[UIImagePickerControllerOriginalImage] as? UIImage{ //original image } else if let myImage = info[UIImagePickerControllerEditedImage] as? UIImage{ //edited image } else{ print("image picker problem") } imagePicker.dismiss(animated: true, completion: nil) } func imagePickerControllerDidCancel(_ picker: UIImagePickerController) { imagePicker.dismiss(animated: true, completion: nil) } }
有了这些改变,你应该会很好。
您必须明确请求访问使用 UIImagePicker
的图片库。
比如PHPhotoLibrary.requestAuthorization
Ash Furrow 帮助我解决了这个问题,因为这是一个非常不明显的问题,可能是一个 api 错误。我为不熟悉解决该问题的过程的人发布了图片。
原来在 Breakpoint Navigator
里面我激活了 All Exceptions
。出于某种原因,当我的应用程序连接到 Xcode 并且 UIImagePicker 正在显示照片库时,触发了所有异常断点并且有轻微的延迟导致应用程序崩溃。延迟是几毫秒,但足够长,以至于应用程序认为存在问题。 Ash 说他以前从未见过这样的东西,并说我的照片库中可能有一张损坏的 jpg 照片,但这又是一个疯狂的猜测。简单的解决方案是停用或删除 All Exceptions 断点,问题就解决了。他确实说这可能是一个 api 问题,因为它仍然导致非常奇怪的崩溃。
需要注意的是,他说All Exceptions break point最好保持激活,因为它会早发现异常。我忘记了他的详细解释,但基本上最好继续使用,如果您 运行 遇到这个问题,只需停用它即可。
通过停用所有异常断点解决 UIImagePicker 库呈现崩溃的步骤:
- 在屏幕左侧的导航窗格中,左起第 7 个看起来像箭头的图标是断点导航器
All Exceptions 断点是activated/highlighted到蓝色
要停用所有例外,请单击突出显示的蓝色箭头或右键单击单词
All Exceptions
本身,然后从列表中选择禁用或删除
- 假设您选择禁用或单击蓝色箭头,它将被停用
- 显然,如果您选择删除,它将从断点导航器中删除,但如果您想再次添加它(或者如果您从来没有使用过它),那么您仍然必须在断点导航器中(第 1 步) ) 并在窗格的左下角按加号按钮并选择异常断点以添加它。
**- I'm also facing the same problem after selecting any image from gallery. after lots of effects I found this solution.**
if #available(iOS 14, *) {
var config = PHPickerConfiguration()
config.filter = .images
config.selectionLimit = 1
let picker = PHPickerViewController(configuration: config)
picker.delegate = self
self.currentController.present(picker, animated: true)
} else {
if UIImagePickerController.isSourceTypeAvailable(UIImagePickerController.SourceType.photoLibrary) {
self.imagePicker.delegate = self
self.imagePicker.allowsEditing = false
self.imagePicker.sourceType = .savedPhotosAlbum
self.currentController.present(imagePicker, animated: true, completion: nil)
} else {
let alert = UIAlertController(title: "Warning", message: "You don't have permission to access gallery.", preferredStyle: .alert)
alert.addAction(UIAlertAction(title: "OK", style: .default, handler: nil))
self.currentController.present(alert, animated: true, completion: nil)
}
}
extension USE_YOUR_CLASS_NAME: PHPickerViewControllerDelegate {
@available(iOS 14, *)
func picker(_ picker: PHPickerViewController, didFinishPicking results: [PHPickerResult]) {
guard let result = results.first else { return }
let jpeg = UTType.jpeg.identifier
let prov = result.itemProvider
prov.loadFileRepresentation(forTypeIdentifier: jpeg) { urlMaybe, errorMaybe in
guard let url = urlMaybe else { return }
let imageData:NSData = NSData(contentsOf: urlMaybe!)!
let image = UIImage(data: imageData as Data)
if image != nil {
// YOU'LL GET SELECTED IMAGE HERE..
}
}
}
}
extension USE_YOUR_CLASS_NAME: UINavigationControllerDelegate, UIImagePickerControllerDelegate {
func imagePickerController(_ picker: UIImagePickerController, didFinishPickingMediaWithInfo info: [UIImagePickerController.InfoKey : Any]) {
//guard let fileUrl = info[UIImagePickerController.InfoKey.originalImage] as? UIImage else { return }
debugPrint(selectedImgName)
if let chosenImage = info[.originalImage] as? UIImage {
// YOU'LL GET SELECTED IMAGE HERE..
}
}
func imagePickerControllerDidCancel(_ picker: UIImagePickerController) {
currentController.dismiss(animated: true, completion: nil)
}
}