How to Validate the Date of Birth IOS7 - ios

Question

Hi in my application i have a registration form in my application and I'm validating all fields like email and phone number. But i want to validate this DOB in format like DD/MM/YY. I'm using else if condition checking for my validation i want do same for DOB
I'm validation with else if condition like this.
- (IBAction)send:(id)sender {
if ([self phonevalidate:[ph text]]!= 1){
UIAlertView *alert1 = [[UIAlertView alloc]initWithTitle:#"Message" message:#"pls enter valid 10 digit number" delegate:self cancelButtonTitle:#"ok" otherButtonTitles:nil, nil];
[alert1 show];
[alert1 release];
}
else if ([self validateEmail:[emd text]]!= 1){
UIAlertView *alert1 = [[UIAlertView alloc]initWithTitle:#"Message" message:#"pls enter valid email id" delegate:self cancelButtonTitle:#"ok" otherButtonTitles:nil, nil];
[alert1 show];
[alert1 release];
}
My validation function for phone.
-(BOOL)phonevalidate:(NSString *)phh
{
NSString *phoneRegex = #"[0-9]{10}";
NSPredicate *phoneTest = [NSPredicate predicateWithFormat:#"SELF MATCHES %#", phoneRegex];
return [phoneTest evaluateWithObject:phh];
}
I'm not using the UIDate Picker i have UITextfield for the DOB i want validate with UITextfield itself.Like the above i want to validate the DOB please tell me how to validate the DOB and check int else if condition.
Thanks.

Answer 1

EDITED:
Assume that b'date is
NSString *dateOfBirth = #"22/03/14";
And this is method for check b'date is valid or not ?
-(BOOL) isValidateDOB:(NSString *) dateOfBirth
{
NSDateFormatter *format = [[NSDateFormatter alloc] init];
[format setDateStyle:NSDateFormatterShortStyle];
[format setDateFormat:#"dd/MM/yy"];
NSDate *validateDOB = [format dateFromString:dateOfBirth];
if (validateDOB != nil)
return YES;
else
return NO;
}
In above method [format setDateStyle:NSDateFormatterShortStyle]; and setDateFormat is very important in your case:
Now you can check it as like,
if([self isValidateDOB:dateOfBirth])
{
// b"date is valid;
}
else
{
// b"date is not valid;
}

Answer 2

You can use UIDatePicker for this :
Initialize like this :
UIDatePicker datePicker = [[UIDatePicker alloc] init];
datePicker.datePickerMode = UIDatePickerModeDate;
datePicker.date = [NSDate date];
Then, set the inputView of your textField (the one that takes DOB as input) :
yourDOBtextField.inputView = datePicker;
Then, implement textFieldDidEndEditing: delegate method for UITextField:
- (void) textFieldDidEndEditing:(UITextField *)textField {
if (textField == yourDOBtextField) {
NSDateFormatter* dateFormatter = [[NSDateFormatter alloc] init];
dateFormatter.dateFormat = #"dd/MM/yy";
yourDOBtextField.text = [dateFormatter stringFromDate:datePicker.date];
[dateFormatter release];
}
}
That's it.

Answer 3

Let's try below codes:
NSDateFormatter * dateFormatter = [[NSDateFormatter alloc] init];
[dateFormatter setDateFormat:#"DD/MM/YY"];
NSDate *date = [dateFormatter dateFromString:#"12/12/2014"];
If (date)
{
NSLog(#"Valid date");
}