Ios phone number format

Question

In my application, I take the phone number as input from the user. The number must be in US format. I want to show it as (555) -888-888 dynamically. For example, when a user starts entering a number, when he reaches 4 digits, he shows a number like this (555) -4 and so on. I tried using the replaceString method, but found that it would not work.

Answer 1

Take a look at NBAsYouTypeFormatterthe libPhoneNumber-iOS library class .

You create a new instance NSAsYouTypeFormatterwith the code for your American region:

NBAsYouTypeFormatter *asYouTypeFormatter = [[NBAsYouTypeFormatter alloc] initWithRegionCode:REGION_CODE_STRING];

Then each time the user changes the phone number that you are calling:

- (NSString*)inputDigit:(NSString*)nextChar;

or

- (NSString*)removeLastDigit;

NSString - .

Answer 2

. , .

libPhoneNumber-iOS . , .

.

(1) , .

#import "NBPhoneMetaDataGenerator.h"
#import "NBPhoneNumberUtil.h"
#import "NBAsYouTypeFormatter.h"

NBAsYouTypeFormatter :

NBAsYouTypeFormatter *asYouTypeFormatter;

(2) viewDidLoad :

asYouTypeFormatter = [[NBAsYouTypeFormatter alloc] initWithRegionCode:@"IN"];

: @ "IN" . , . plist, libPhoneNumber-iOS, .

(3) UITextField yout.

#pragma mark
#pragma mark - Phone Number textfield formatting

# define LIMIT 18 // Or whatever you want

- (BOOL)textField:(UITextField *)textField shouldChangeCharactersInRange:(NSRange)range replacementString:(NSString *)string
{
    // Just allow 18 digits
    if(!(([string length] + range.location) > LIMIT))
    {
        // Something entered by user
        if(range.length == 0)
        {
            [txtNumber setText:[asYouTypeFormatter inputDigit:string]];
        }

        // Backspace
        else if(range.length == 1)
        {
            [txtNumber setText:[asYouTypeFormatter removeLastDigit]];
        }
    }

    return NO;
}

, !!!

Answer 3

, , , .

tableView, textField. . .

, , Swift.

---

• , OfYourProject-Bridging-Header :

  #import "NBAsYouTypeFormatter.h"
  

• NBAsYouTypeFormatter:

  private var phoneFormatter: NBAsYouTypeFormatter!
  

• in viewDidLoad hasSet , NBAsYouTypeFormatter :

  // yourRegionCode is a 2-digit country code (ISO 3166)
  phoneFormatter = NBAsYouTypeFormatter(regionCode: yourRegionCode)
  

• viewController TextFieldDelegate shouldChangeCharactersInRange:

  func textField(textField: UITextField, shouldChangeCharactersInRange range: NSRange, replacementString string: String) -> Bool {
  
      // Phone number cell
      if cellContainsPhoneNumber { // This is specific to your own tableView
  
          // Formatting phone number as you type
          let textWithoutSpaces = textField.text.stringByReplacingOccurrencesOfString(" ", withString: "", options: NSStringCompareOptions.LiteralSearch, range: nil)
          phoneFormatter.inputString(textWithoutSpaces) // This is the initial value of the phoneFormatter each time the delegate method is called
  
          let formattedNumber: String!
          if string == "" {
              formattedNumber = phoneFormatter.removeLastDigit()
          } else {
              formattedNumber = phoneFormatter.inputDigit(string)
          }
  
          // set the textField text with the new formattedNumber
          textField.text = formattedNumber
          return false 
      }
      return true
  }
  

---

, , Apple. , .

Answer 4

, (Swift 2.0):

func textField(textField: UITextField, shouldChangeCharactersInRange range: NSRange, replacementString string: String) -> Bool {
    // Allow up to 18 chars
    if !(string.characters.count + range.location > 18) {
        if range.length == 0 {
            // original text didn't change
            textField.text = phoneFormatter?.inputDigit(string)
        } else if range.length == 1 { 
            // user pressed backspace
            textField.text = phoneFormatter?.removeLastDigit()
        } else if range.length == textField.text?.characters.count {
            // text was cleared
            phoneFormatter?.clear()
            textField.text = ""
        }
    }
    return false
}

, , , "" " " → "".

There are some edge cases, such as a user editing certain numbers in a phone number that is not processed, but can be easily added.

Answer 5

You can use this library to enter formatting during input https://github.com/luximetr/AnyFormatKit

Example

let textInputController = TextInputController()

let textInput = TextInputField() // or TextInputView or any TextInput
textInputController.textInput = textInput // setting textInput

let formatter = TextInputFormatter(textPattern: "### (###) ###-##-##", prefix: "+12")
textInputController.formatter = formatter // setting formatter

In this case, the TextInputController will format the text in textField or textView.