Kullanıcı bilgilerini girdiği bir metin alanı var. Telefon numarası alan. Eğer kullanıcı 1234567890, girerse kullanıcı türü olarak (123)-(456)-7890 şeklinde görüntülenmesini istiyorum. Bu nasıl mümkün olabilir?

Bu size yardımcı olacaktır

Biçimi (xxx)- xxx-xxxx

- (BOOL)textField:(UITextField *)textField shouldChangeCharactersInRange:(NSRange)range replacementString:(NSString *)string{

  int length = [self getLength:textField.text];
  //NSLog(@"Length  =  %d ",length);

  if(length == 10)
  {
    if(range.length == 0)
        return NO;
  }

  if(length == 3)
  {
    NSString *num = [self formatNumber:textField.text];
    textField.text = [NSString stringWithFormat:@"(%@) ",num];
    if(range.length > 0)
        textField.text = [NSString stringWithFormat:@"%@",[num substringToIndex:3]];
  }
  else if(length == 6)
  {
    NSString *num = [self formatNumber:textField.text];
    //NSLog(@"%@",[num  substringToIndex:3]);
    //NSLog(@"%@",[num substringFromIndex:3]);
    textField.text = [NSString stringWithFormat:@"(%@) %@-",[num  substringToIndex:3],[num substringFromIndex:3]];
    if(range.length > 0)
        textField.text = [NSString stringWithFormat:@"(%@) %@",[num substringToIndex:3],[num substringFromIndex:3]];
  }

  return YES;
}

-(NSString*)formatNumber:(NSString*)mobileNumber
{

mobileNumber = [mobileNumber stringByReplacingOccurrencesOfString:@"(" withString:@""];
mobileNumber = [mobileNumber stringByReplacingOccurrencesOfString:@")" withString:@""];
mobileNumber = [mobileNumber stringByReplacingOccurrencesOfString:@" " withString:@""];
mobileNumber = [mobileNumber stringByReplacingOccurrencesOfString:@"-" withString:@""];
mobileNumber = [mobileNumber stringByReplacingOccurrencesOfString:@" " withString:@""];

NSLog(@"%@", mobileNumber);

int length = [mobileNumber length];
if(length > 10)
{
    mobileNumber = [mobileNumber substringFromIndex: length-10];
    NSLog(@"%@", mobileNumber);

}


return mobileNumber;
}


-(int)getLength:(NSString*)mobileNumber
{

  mobileNumber = [mobileNumber stringByReplacingOccurrencesOfString:@"(" withString:@""];
mobileNumber = [mobileNumber stringByReplacingOccurrencesOfString:@")" withString:@""];
mobileNumber = [mobileNumber stringByReplacingOccurrencesOfString:@" " withString:@""];
mobileNumber = [mobileNumber stringByReplacingOccurrencesOfString:@"-" withString:@""];
mobileNumber = [mobileNumber stringByReplacingOccurrencesOfString:@" " withString:@""];

int length = [mobileNumber length];

return length;


}