I'm trying to create a command line app using Swift Package Manager which get some data from user and make something with it. Sounds simple, huh?
func handleInput() {
if let username = requestEnterUserName(), !username.isEmpty {
print("You entered valid username: \(username)")
} else {
handleInput()
}
}
func requestUserName() -> String? {
print("Please enter username: ", terminator: "")
let username = readLine()
let trimmedUserName = username.trimmingCharacters(in: CharacterSet.whitespacesAndNewlines)
return trimmedUserName
}
My problem is that I don't need backspace characters in username, or whitespace in the middle of it. I would like to filter it dynamically. To delete wrong character after user wrote it. I wonder if it is possible at all.
Related
this is supposed to take the user ID from the result!.user.uid and store it a variable or function in order for me to use it again.
the problem is that I dont know how to get it to store the value outside of this function.
Ive tried to make it store to a variable outside of the initial button function, and Ive also tried to return it outside of the function by removing a part of the code which made it become a void. Im not sure where i need to go/what else I can try and do in order to fix this problem.
If anybody know how do I retrieve my document ID from this code your help would be greaty appreciated
#IBAction func NextButtonTapped(_ sender: Any) {
//validate the fileds
let Error = validateFields()
if Error != nil {
// there is somthing wrong with the fields show error message
showError(Error!)
}
else {
// create cleaned versions of the data
let Password = PasswordTextField.text!.trimmingCharacters(in: .whitespacesAndNewlines)
let Email = EmailTextField.text!.trimmingCharacters(in: .whitespacesAndNewlines)
let Firstname = FirstnameTextField.text!.trimmingCharacters(in: .whitespacesAndNewlines)
let Lastname = LastnameTextField.text!.trimmingCharacters(in: .whitespacesAndNewlines)
let Age = AgeTextField.text!.trimmingCharacters(in: .whitespacesAndNewlines)
// create the user
Auth.auth().createUser(withEmail: Email, password: Password) { (results, Err) in
// check for errors
if Err != nil {
// there was an error creating the user
self.showError("Error creating user")
}
else {
// user was created succesfully store first and last name
let db = Firestore.firestore()
db.collection("users").document(results!.user.uid).setData(["first name":Firstname, "last name":Lastname, "age":Age, "uid":results!.user.uid]) { (Error) in
if Error != nil {
// show error message
self.showError("error saving user data")
}
//showing users document id
}
//transition to the home screen
self.transitionToHome()
}
}
}
}
I have no idea what to do any help would be amazing,
thank you very much!!!!
Define a uid variable outside of the IBAction function like so.
var uid: String? = nil
Then, within the createUser function
self.uid = results!.user.uid
I have tried a couple of different things, and at this point I am stumped. I simply want to be able to access the user's email to present it in a view. However I have not been able to successfully present, much less retrieve, this information. Here are the two pieces of code I have tried with:
func getUsername() -> String? {
if(self.isAuth) {
return AWSMobileClient.default().username
} else {
return nil
}
}
and
func getUserEmail() -> String {
var returnValue = String()
AWSMobileClient.default().getUserAttributes { (attributes, error) in
if(error != nil){
print("ERROR: \(String(describing: error))")
}else{
if let attributesDict = attributes{
//print(attributesDict["email"])
self.name = attributesDict["name"]!
returnValue = attributesDict["name"]!
}
}
}
print("return value: \(returnValue)")
return returnValue
}
Does anyone know why this is not working?
After sign in try this:
AWSMobileClient.default().getTokens { (tokens, error) in
if let error = error {
print("error \(error)")
} else if let tokens = tokens {
let claims = tokens.idToken?.claims
print("claims \(claims)")
print("email? \(claims?["email"] as? String ?? "No email")")
}
}
I've tried getting the user attributes using AWSMobileClient getUserAttributes with no success. Also tried using AWSCognitoIdentityPool getDetails With no success. Might be an error from AWS Mobile Client, but we can still get attributes from the id token, as seen above.
If you are using Hosted UI, remember to give your hosted UI the correct scopes, for example:
let hostedUIOptions = HostedUIOptions(scopes: ["openid", "email", "profile"], identityProvider: "Google")
It is because it is an async function so will return but later than when the function actually ends with the value. Only way I found to do it is placing a while loop and then using an if condition.
So I’m really struggling with this and I don’t know why tbh.
I tried different ways of forcing my username (email address) to String from a text field. I just can’t get the damn thing to convert or to accept input as a String. Ridiculously been trying for nearly a whole day to get this in the meantime I wrote the rest of my Login func but this is stopping it from working or letting me see other errors.
Auth.auth().signIn(withEmail: username, password: password, completion: { user, error in
My text field is called username. I’ve tried converting (String(username)), as String, and such, I’ve tried creating var and let to make it String but this only produces more errors I’m thinking the thing is corrupt!
Please help.
If you have a UITextField named username you get the text from the textfield by: username.text, which returns a String?.
See https://developer.apple.com/documentation/uikit/uitextfield/1619635-text
func performLogin() {
//Logging In
Auth.auth().signIn(withEmail: username, password: password, completion: { user, error in
if (error != nil){
errorLabel = error1 //"There has been an Error " + "No User Found"
//Could Not Login, Attempt to Create user
//Creating Account
Auth.auth().createUserWithEmail(self.username, password: self.password!, completion: { user, error in
Because UITextField is not a String but it does have a value that is a string called text. To get this just change your code
Auth.auth().signIn(withEmail: username.text, password: password.text, completion: { user,...
However, as you have mentioned text is an optional String which is why you are receiving an error, the function is expecting an explicit String
The text value of a UITextField is optional, meaning that you can guarantee that it's value will not be nil. You should read more on the basics of Swift and optional vs explicit but here is a simple solution.
Before passing your variables in the sign-in you can unwrap them using a guard statement
guard let usernameString = username.text else {
// Handle no username, show an alert etc
return
}
guard let passwordString = password.text else {
// Handle no password, show an alert etc
return
}
Auth.auth().signIn(withEmail: usernameString, password: passwordString, completion: { user,...
Hey so I've been building my app in Firebase, I came across the same problem with my text fields etc when trying to create a user with an email. I just built it into a function and it works like a dream...
func signIn() {
Auth.auth().signIn(withEmail: emailTextField.text!, password: passwordTextField.text!) { (user, error) in
print(user?.uid)
if error != nil {
self.displayAlert(title: "Error", message: (error!.localizedDescription))
} else {
let storyboard = UIStoryboard(name: "Main", bundle: nil)
let loggedInView = storyboard.instantiateViewController(withIdentifier: "Today")
self.present(loggedInView, animated: true, completion: nil)
}
}
}
its a nice easy way to do it.
Hope that helps.
I have a UItextField called addUserField in which a user can enter an email after the user hits enter I am checking if that email exists in my Firebase DB and if it does it must print "OK"\email and if does not then it should print "BAD"\email. However my code below is not doing what its intended to, it is somehow executing the if conditions twice and I am not able to figure out why.
So incase the email exists in the database it is printing:
OK xyz#abc.com
BAD xyz#abc.com
Incase the email does not exist in the database it is printing:
BAD abc#xyz.com
BAD abc#xyz.com
Can anybody help me figure out why the if statement is executing twice and how can I make it so that it just print OK if email exists or BAD if it does not.
func textFieldShouldReturn(_textField: UITextField!) -> Bool {
var email: String = ""
if let userEmail = addUserField.text{
email = userEmail
}
let userRef = ref.child("users");
userRef.queryOrderedByChild("role").queryEqualToValue("User").observeEventType(.Value, withBlock: {
snapshot in
for child in snapshot.children {
let username = child.value["email"] as! String
if (email == username){
print ("OK \(email)")
}
else {
print ("BAD \(email)")
}
}
})
return true
}
TLDR When I hard code phone numbers into a URL it opens in watch messages correctly, but when I use a variable string with the numbers typed in exactly the same way inside of it, it doesn't.
Example:
NSURL(string: "sms:/open?addresses=8888888888,9999999999,3333333333&body=Test")
Above code works but below code doesn't:
let hardCode = "8888888888,9999999999,3333333333"
NSURL(string: "sms:/open?addresses=\(hardCode)&body=Test")
FULL DETAILS:
I am making a URL from variables to open messages on the Apple Watch with pre-filled contents. I am getting the phone numbers from the contact book and storing them in an array. They are provided in this format:
(###) ###-#### but need to be ##########
I tested the code by hard-coding phone numbers into the URL and it works properly with all contacts and completed body:
if let urlSafeBody = urlSafeBody, url = NSURL(string: "sms:/open?addresses=8888888888,9999999999,3333333333&body=\(urlSafeBody)") {
print("FINAL URL: \(url)")
WKExtension.sharedExtension().openSystemURL(url)
}
But when I build the phone number values programmatically it does not work:
//holds phone numbers without special chars
var tempArray: [String] = []
//if I can access the unformatted numbers
if let recips = saveData["recips"] as? [String] {
//for each number provided
recips.forEach { (person: String) in
//remove all non-numerical digits
//person is now (###) ###-####
let newPerson = person.digitsOnly()
//newPerson is ##########
print(person)
print("->\(newPerson)")
//add formatted number to tempArray
tempArray.append(newPerson)
}
}
//combine all numbers with "," between as a string
let recipString = tempArray.joinWithSeparator(",")
//recipString contains ##########,##########,##########...
extension String {
func digitsOnly() -> String{
let stringArray = self.componentsSeparatedByCharactersInSet(
NSCharacterSet.decimalDigitCharacterSet().invertedSet)
let newString = stringArray.joinWithSeparator("")
return newString
}
}
I then add the "recipString" variable to the NSURL in the below code:
let messageBody = "test"
let urlSafeBody = messageBody.stringByAddingPercentEncodingWithAllowedCharacters(NSCharacterSet.URLHostAllowedCharacterSet())
if let urlSafeBody = urlSafeBody, url = NSURL(string: "sms:/open?addresses=\(recipString)&body=\(urlSafeBody)") {
print("FINAL URL: \(url)")
WKExtension.sharedExtension().openSystemURL(url)
}
The FINAL URL print shows the correct string, but the messages app does not open properly, and shows quick reply menu instead of composed message window. It matches the functioning hard coded number version exactly, but behaves differently.
Totally lost, hope someone can help!
UPDATE 1
Here are the debug prints for both versions of the URL:
Manually declared (not created from recipString but actually declared in the URL string explicitly):
This version works
FINAL URL: sms:/open?addresses=0000000000,1111111111,2222222222,3333333333,4444444444&body=test
Variable created (using recipString):
This version doesn't
FINAL URL: sms:/open?addresses=0000000000,1111111111,2222222222,3333333333,4444444444&body=test
I have also tried applying url encoding to the "recipString" variable by using the below if let:
if let urlSafeRecip = recipString.stringByAddingPercentEncodingWithAllowedCharacters(NSCharacterSet.URLQueryAllowedCharacterSet()) {
if let urlSafeBody = urlSafeBody, url = NSURL(string: "sms:/open?addresses=\(urlSafeRecip)&body=\(urlSafeBody)") {
print("FINAL URL: \(url)")
WKExtension.sharedExtension().openSystemURL(url)
}
}
UPDATE 2
I tested to see if the hardcode version of numbers matches the recipString exactly via this code:
let hardCode = "0000000000,1111111111,2222222222,3333333333,4444444444"
let isEqual = (hardCode == recipString)
if isEqual {
print("hardCode matches recipString")
}
else {
print("hardCode does not match recipString")
}
Debug prints:
hardCode matches recipString
UPDATE 3
I have confirmed that:
When a URL is made with hard coded numbers vs. numbers that I make from variables, checking == between them returns true.
In every test I can do between the two version of the url, it matches.
NOTES AFTER CORRECT ANSWER FOUND:
This type of URL formatting will ONLY work with multiple addresses in the URL. If you do not have multiple addresses you will need to do the following, which is undocumented but none-the-less works. I found this by bashing my face on the keyboard for hours, so if it helps you an upvote is deserved :)
follow the answer marked below, and then use this type of logic check before making the URL in the doItButton() function he mentioned:
func setupAndSendMsg(saveData: NSDictionary) {
if let urlSafeBody = createBody(saveData) {
let theNumbers = createNumbers(saveData).componentsSeparatedByString(",")
print(theNumbers.count-1)
if theNumbers.count-1 > 0 {
if let url = NSURL(string: "sms:/open?addresses=\(createNumbers(saveData))&body=\(urlSafeBody)") {
print(url)
WKExtension.sharedExtension().openSystemURL(url)
}
} else {
if let url = NSURL(string: "sms:/open?address=\(createNumbers(saveData)),&body=\(urlSafeBody)") {
print(url)
WKExtension.sharedExtension().openSystemURL(url)
}
}
}
}
My guess is that it is not the acctual openSystemUrl call that is the problem. I believe there must be something with the code that is building the number string programmatically.
The code bellow is a simplified version of all the code you have posted. I have confirmed that it is working on my Apple Watch. It opens the Messages app with pre-populated numbers & body text.
Take one more look at your code and see if there is something your missing. If you can't find anything, just delete the code and re-write it, probably will be faster then spotting the weird issue.
Once again the code bellow is confirmed working as expected, so you should be able to get it to work. (or just copy & paste my code) :)
class InterfaceController: WKInterfaceController {
#IBAction func doItButton() {
if let urlSafeBody = createBody() {
if let url = NSURL(string: "sms:/open?addresses=\(createNumbers())&body=\(urlSafeBody)") {
print(url)
WKExtension.sharedExtension().openSystemURL(url)
}
}
}
private func createBody() -> String? {
let messageBody = "hello test message"
return messageBody.stringByAddingPercentEncodingWithAllowedCharacters(NSCharacterSet.URLHostAllowedCharacterSet())
}
private func createNumbers() -> String {
let numbers = ["(111) 222-3333", "(444) 555-6666"]
var tempArray: [String] = []
numbers.forEach { (number: String) in
tempArray.append(number.digitsOnly())
}
return tempArray.joinWithSeparator(",")
}
}
extension String {
func digitsOnly() -> String{
let stringArray = self.componentsSeparatedByCharactersInSet(
NSCharacterSet.decimalDigitCharacterSet().invertedSet)
let newString = stringArray.joinWithSeparator("")
return newString
}
}
With above said I would recommend against using undocumented Apple features for anything you plan on putting on the App Store for the reasons already mentioned in comments.