ychen450 / TextFieldHelper

iOS UITextField Helper UIView+Textfield class and demos

TextFieldHelper

iOS UITextField Helper UIView+Textfield class and demos

##Features:

• Animating the view to make the edited text field visible.
• End editing and dismiss the keyboard by return key or tap outside the keyboard
• Return key type in sequence "Next" and "Go". "Next" goes to the next text field automatically.
• Validation including mininum length, maximun length, email, number only, and re-enter password check.

##How to use:

• Put UIView+Textfield class (.h and .m) into your project. Remember to #import "UIVew+Textfield.h" and when using.

• Set up in ViewDidLoad: (for example, your textfield is _userNameField and _passwordField) ```objc _userNameField.delegate = self; _passwordField.delegate = self;

  NSMutableDictionary *usernameDict = [[NSMutableDictionary alloc] init];
  [usernameDict setObject:_userNameField forKey:@"textfield"];
  [usernameDict setObject:[NSNumber numberWithInt:6] forKey:@"minlength"];                        // optional
  [usernameDict setObject:USERNAME_ERROR_SHORT forKey:@"minerror"];                               // optional
  [usernameDict setObject:[NSNumber numberWithInt:60] forKey:@"maxlength"];                       // optional
  [usernameDict setObject:USERNAME_ERROR_LONG forKey:@"maxerror"];                                // optional
  [usernameDict setObject:[NSString stringWithString:@"EMAIL"] forKey:@"validationoption"];       // optional
  [usernameDict setObject:[NSArray arrayWithObject:validationResult] forKey:@"validationlabel"];  // optional
  
  NSMutableDictionary *passwordDict = [[NSMutableDictionary alloc] init];
  [passwordDict setObject:_passwordField forKey:@"textfield"];
  [passwordDict setObject:[NSNumber numberWithInt:10] forKey:@"minlength"];                       // optional
  [passwordDict setObject:PASSWORD_ERROR_SHORT forKey:@"minerror"];                               // optional
  [passwordDict setObject:[NSArray arrayWithObject:validationResult] forKey:@"validationlabel"];  // optional
  
  NSArray *textfieldArray = [NSArray arrayWithObjects:usernameDict, passwordDict, nil];
  [self.view setTextField:textfieldArray];
  ```
  

  If validation needed, objc [[NSNotificationCenter defaultCenter] addObserver:self selector:@selector(validateInputCallback:) name:@"UITextFieldTextDidChangeNotification" object:nil];

• Paste the following code outside of ViewDidLoad: ```objc - (BOOL)textFieldShouldReturn:(UITextField *)textField {
  [self.view textfieldReturn:textField]; return NO; }

  - (void)textFieldDidBeginEditing:(UITextField *)textField
  {
        [self.view textfieldMakeVisible:textField];
  }
  
  - (void)textFieldDidEndEditing:(UITextField *)textField
  {
        [self.view textfieldEndEdit:textField];
  }
  
  - (void)touchesEnded: (NSSet *) touches withEvent: (UIEvent *) event {   
        [self.view textfieldTouchToReturn];
  }
  
  - (void)validateInputCallback:(id)sender
  {
        if ([self.view validateInput]) {
              _enrollButton.enabled = true;
        } else {
              _enrollButton.enabled = false;
        }
  }
  ```