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Question

My app has a registration view, I compare strings in password textfield and confirm password textfield , if they dont match I want user go back to password textfield
This question done it with using tags
UITextField jump to previous
Is there a way to accomplish this without using tags?
//call next textfield on each next button
- (BOOL) textFieldShouldReturn:(UITextField *) textField {
BOOL didResign = [textField resignFirstResponder];
if (!didResign) return NO;
if ([textField isKindOfClass:[SOTextField class]])
dispatch_async(dispatch_get_current_queue(),
^ { [[(SOTextField *)textField nextField] becomeFirstResponder]; });
return YES;
}
-(void)textFieldDidEndEditing:(UITextField *)textField{
if (textField==self.confirmPassword) {
if ([self.password.text isEqualToString:self.confirmPassword.text]) {
NSLog(#"password fields are equal");
}
else{
NSLog(#"password fields are not equal prompt user to enter correct values");
//[self.password becomeFirstResponder]; doesnt work
}
}
}

Answer 1

Without using tags, you could create an NSArray of textfield outlets the describes the desired ordering.
Declare and init like this ...
#property(nonatomic,strong) NSArray *textFields;
- (NSArray *)textFields {
if (!_textFields) {
// just made these outlets up, put your real outlets in here...
_textFields = [NSArray arrayWithObjects:self.username, self.password, nil];
}
return _textFields;
}
You'll need to fetch the text field that currently has focus, if there is one...
- (UITextField *)firstResponderTextField {
for (UITextField *textField in self.textFields) {
if ([textField isFirstResponder]) return textField;
}
return nil;
}
Then advance focus like this...
- (void)nextFocus {
UITextField *focusField = [self firstResponderTextField];
// what should we do if none of the fields have focus? nothing
if (!focusField) return;
NSInteger index = [self.textFields indexOfObject:textField];
// advance the index in a ring
index = (index == self.textFields.count-1)? 0 : index+1;
UITextField *newFocusField = [self.textFields objectAtIndex:index];
[newFocusField becomeFirstResponder];
}
And move focus backward like this...
- (void)previousFocus {
UITextField *focusField = [self firstResponderTextField];
// what should we do if none of the fields have focus? nothing
if (!focusField) return;
NSInteger index = [self.textFields indexOfObject:textField];
// backup the index in a ring
index = (index == 0)? self.textFields.count-1 : index-1;
UITextField *newFocusField = [self.textFields objectAtIndex:index];
[newFocusField becomeFirstResponder];
}