Ios 创建类型未知的图像格式时出错…Swift3
我正在youtube上学习一些swift 3的后续课程。下面我编写的代码用于创建用户帐户并将详细信息存储在Firebase数据库中。在测试时，我可以一直到提交注册表为止。然后，我收到以下错误：Ios 创建类型未知的图像格式时出错…Swift3,ios,firebase,swift3,Ios,Firebase,Swift3,我正在youtube上学习一些swift 3的后续课程。下面我编写的代码用于创建用户帐户并将详细信息存储在Firebase数据库中。在测试时，我可以一直到提交注册表为止。然后，我收到以下错误： [Generic] Creating an image format with an unknown type is an error. Fatal Error: unexpectedly found nil whilst unwrapping an Optionional value. 我还在下面的代
[Generic] Creating an image format with an unknown type is an error.
Fatal Error: unexpectedly found nil whilst unwrapping an Optionional value.
exc_bad_instruction(code=exc_i386_invop subcode=0x0)
import UIKit
import Firebase
class Signup_ViewController: UIViewController,
UIImagePickerControllerDelegate, UINavigationControllerDelegate {
// Input data fields for signup form
@IBOutlet weak var usernameField: UITextField!
@IBOutlet weak var emailField: UITextField!
@IBOutlet weak var nameField: UITextField!
// Password data field for signup form
@IBOutlet weak var passwordField: UITextField!
@IBOutlet weak var confirmPasswordField: UITextField!
// Next button for signup form (Hidden by default)
@IBOutlet weak var nextBtn: UIButton!
let picker = UIImagePickerController()
var userStorage: FIRStorageReference!
var ref: FIRDatabaseReference!
override func viewDidLoad() {
super.viewDidLoad()
picker.delegate = self
let storage = FIRStorage.storage().reference(forURL: "XXXXXXXXXXXXXXXXXXXX") // Defines URL for Firebase storage container
ref = FIRDatabase.database().reference()
userStorage = storage.child("users") // Folder on Firebase storage
}
// Image for signup form - user profile image
@IBOutlet weak var imgView: UIImageView!
// Action for when user presses the "Select profile picture" button
@IBAction func selectProfileImagePress(_ sender: Any) {
picker.allowsEditing = true // Enables user to edit photo
picker.sourceType = .photoLibrary // Enables user to pick photo from photo library
present(picker, animated: true, completion: nil)
}
func imagePickerController(_ picker: UIImagePickerController, didFinishPickingMediaWithInfo info: [String : Any]) {
if let image = info[UIImagePickerControllerEditedImage] as? UIImage {
self.imgView.image = image // Checks image selected exists
nextBtn.isHidden = false // Unhides "Next" button once image has been picked
}
self.dismiss(animated: true, completion: nil)
}
// Action for when the "Next" button is pressed
@IBAction func nextPressed(_ sender: Any) {
guard usernameField.text != "", nameField.text != "", emailField.text != "", passwordField.text != "", confirmPasswordField.text != "" else { return }
if passwordField.text == confirmPasswordField.text { // Checks password and confirm password match <---- Error highlights this line when the app crashes out.
FIRAuth.auth()?.createUser(withEmail: emailField.text!, password: passwordField.text!, completion: { (user, error) in
if let error = error {
print(error.localizedDescription)
}
if let user = user {
let changeRequest = FIRAuth.auth()!.currentUser!.profileChangeRequest()
changeRequest.displayName = self.nameField.text!
changeRequest.commitChanges(completion: nil)
let imageRef = self.userStorage.child("\(user.uid).jpg") // Creates JPG file for user uploading (user.uid is variable for specific user)
let data = UIImageJPEGRepresentation(self.imgView.image!, 0.5) // Prepares user profile picture to be sent to Firebase. Applies 0.5 compression to image.
let uploadTask = imageRef.put(data!, metadata: nil, completion: { (metadata, err) in
if err != nil {
print(err!.localizedDescription)
}
imageRef.downloadURL(completion: { (url, er) in
if er != nil {
print(er!.localizedDescription)
}
if let url = url {
let userInfo: [String : Any] = ["uid" : user.uid,
"username" : self.usernameField.text!,
"name" : self.nameField.text!,
"urltoImage" : url.absoluteString]
self.ref.child("users").child(user.uid).setValue(userInfo)
let vc = UIStoryboard(name: "Main", bundle: nil).instantiateViewController(withIdentifier: "userVC")
self.present(vc, animated: true, completion: nil)
}
})
})
uploadTask.resume()
}
})
} else {
print ("Password does not match")
}
}
}
导入UIKit
进口火基
类注册\u ViewController:UIViewController，
UIImagePickerControllerDelegate，UINavigationControllerDelegate{
//为注册表单输入数据字段
@ibvar usernameField:UITextField！
@IBOutlet弱var emailField:UITextField！
@IBVAR名称字段：UITextField！
//注册表单的密码数据字段
@IBOUTLE弱var密码字段：UITextField！
@IBOutlet弱var confirmPasswordField:UITextField！
//注册表单的“下一步”按钮（默认情况下隐藏）
@IBOUTLE弱var nextBtn:UIButton！
让picker=UIImagePickerController（）
var userStorage:FIRStorageReference！
var ref:FIRDatabaseReference！
重写func viewDidLoad（）{
super.viewDidLoad（）
picker.delegate=self
让storage=FIRStorage.storage（）.reference（forURL:“xxxxxxxxxxxxxxxxxxxxx”）//定义Firebase存储容器的URL
ref=FIRDatabase.database（）.reference（）
userStorage=storage.child（“users”）//Firebase存储上的文件夹
}
//注册表单的图像-用户配置文件图像
@IBVAR imgView:UIImageView！
//用户按下“选择配置文件图片”按钮时的操作
@iAction func selectProfileImagePress（\发送方：任意）{
picker.allowsdediting=true//允许用户编辑照片
picker.sourceType=.photoLibrary//允许用户从照片库中拾取照片
当前（选择器，动画：真，完成：无）
}
func imagePickerController（picker:UIImagePickerController，didFinishPickingMediaWithInfo:[字符串：任意]）{
如果让image=info[UIImagePickerControllerEditedImage]作为？UIImage{
self.imgView.image=图像//检查所选图像是否存在
nextBtn.isHidden=false//拾取图像后取消隐藏“下一步”按钮
}
self.disclose（动画：true，完成：nil）
}
//按下“下一步”按钮时的操作
@iAction func nextPressed（\发送方：任意）{
guard usernameField.text！=“”，nameField.text！=“”，emailField.text！=“”，passwordField.text！=“”，confirmPasswordField.text！=“”，否则{return}
如果passwordField.text==confirmPasswordField.text{//检查密码并确认密码匹配，而不是您的代码：
func imagePickerController(_ picker: UIImagePickerController, didFinishPickingMediaWithInfo info: [String : Any]) {
if let image = info[UIImagePickerControllerEditedImage] as? UIImage {
self.imgView.image = image // Checks image selected exists
nextBtn.isHidden = false // Unhides "Next" button once image has been picked
}
self.dismiss(animated: true, completion: nil)
}
用这个
/// what app will do when user choose & complete the selection image :
func imagePickerController(_ picker: UIImagePickerController, didFinishPickingMediaWithInfo info: [String : Any]) {
/// chcek if you can return edited image that user choose it if user already edit it(crop it), return it as image
if let editedImage = info[UIImagePickerControllerEditedImage] as? UIImage {
/// if user update it and already got it , just return it to 'self.imgView.image'
self.imgView.image = editedImage
/// else if you could't find the edited image that means user select original image same is it without editing .
} else if let orginalImage = info[UIImagePickerControllerOriginalImage] as? UIImage {
/// if user update it and already got it , just return it to 'self.imgView.image'.
self.imgView.image = orginalImage
}
else { print ("error") }
/// if the request successfully done just dismiss
picker.dismiss(animated: true, completion: nil)
}
对于此错误：
创建类型未知的图像格式时出错…Swift3
这是xcode中的一个bug，如果picker能够正确地选择并返回图像，这意味着一切正常，那么就忽略它。而不是您的代码：
func imagePickerController(_ picker: UIImagePickerController, didFinishPickingMediaWithInfo info: [String : Any]) {
if let image = info[UIImagePickerControllerEditedImage] as? UIImage {
self.imgView.image = image // Checks image selected exists
nextBtn.isHidden = false // Unhides "Next" button once image has been picked
}
self.dismiss(animated: true, completion: nil)
}
用这个
/// what app will do when user choose & complete the selection image :
func imagePickerController(_ picker: UIImagePickerController, didFinishPickingMediaWithInfo info: [String : Any]) {
/// chcek if you can return edited image that user choose it if user already edit it(crop it), return it as image
if let editedImage = info[UIImagePickerControllerEditedImage] as? UIImage {
/// if user update it and already got it , just return it to 'self.imgView.image'
self.imgView.image = editedImage
/// else if you could't find the edited image that means user select original image same is it without editing .
} else if let orginalImage = info[UIImagePickerControllerOriginalImage] as? UIImage {
/// if user update it and already got it , just return it to 'self.imgView.image'.
self.imgView.image = orginalImage
}
else { print ("error") }
/// if the request successfully done just dismiss
picker.dismiss(animated: true, completion: nil)
}
对于此错误：
创建类型未知的图像格式时出错…Swift3
这是xcode中的一个错误，如果picker能够正确选择并返回图像，这意味着一切都正常，那么就忽略它。您是否检查过脚本中的passwordField和confirmPasswordField是否正确连接？这将解释该行中的“意外发现零”错误。我无法对“创建图像”进行评论。。。错误-这对我来说是新的。嗨，我已经检查了confirmPasswordField，甚至重新链接。仍然得到错误。我已经解决了创建图像的错误。还有passwordField？你仍然在同一行上得到相同的意外发现零错误吗？该行上只有两个选项，其中一个是零-这就是错误所在正在告诉你。你检查过密码字段和confirmPasswordField在情节提要中是否正确连接了吗？这可以解释这一行的“意外发现零”错误。我无法对“创建图像…”错误发表评论-这对我来说是新错误。嗨，我检查过confirmPasswordField，甚至重新链接了。仍然收到错误。我已经解决了创建图像的错误。密码字段呢？你还在同一行上得到同样的意外发现的零错误吗？这行上只有两个选项，其中一个是零-这就是错误告诉你的。嗨，这肯定解决了我的一个问题。现在我只剩下一个，我希望能解决由第一个海报评论。谢谢你的帮助。很高兴看到这一点。亲爱的，我已经回答你的“创建未知类型的图像格式是一个错误”这是xcode中的一个bug，如果picker能够正确地选择并返回图像，这意味着一切都正常，请忽略它。“嗨，这肯定解决了我的一个问题。现在我还有一个问题，我希望通过第一条海报评论来解决。谢谢你的帮助。很高兴看到这一点。亲爱的，我已经回答了你的问题。”“创建一个未知类型的图像格式是一个错误”这是xcode中的一个错误，如果picker能够正确地选择并返回图像，这意味着一切正常，就忽略它