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    <p>I created a new <em>Single View Application</em> project to test this out; and dropped the following code in the <code>ViewController.m</code></p> <pre><code>#import "ViewController.h" @interface ViewController () &lt;UITextFieldDelegate&gt; { @private IBOutlet UITextField* m_fieldA; IBOutlet UITextField* m_fieldB; IBOutlet UITextField* m_fieldC; } @end @implementation ViewController // connected to Editing Did Begin - (IBAction) onFocus:(UITextField*)_textField { [self updateKeyboardFor:_textField]; } // connected to Editing Changed - (IBAction) onChanged:(UITextField*)_textField { [self updateKeyboardFor:_textField]; } - (void) updateKeyboardFor:(UITextField*)_textField { bool allTextFieldsAreFilled = [m_fieldA.text length] &amp;&amp; [m_fieldB.text length] &amp;&amp; [m_fieldC.text length]; if (allTextFieldsAreFilled) { if (_textField.returnKeyType != UIReturnKeyGo) { _textField.returnKeyType = UIReturnKeyGo; //[_textField resignFirstResponder]; //[_textField becomeFirstResponder]; [_textField reloadInputViews]; } } else { if (_textField.returnKeyType != UIReturnKeyNext) { _textField.returnKeyType = UIReturnKeyNext; //[_textField resignFirstResponder]; //[_textField becomeFirstResponder]; [_textField reloadInputViews]; } } } // A part of UITextFieldDelegate - (BOOL) textFieldShouldReturn:(UITextField*)_textField { if (_textField.returnKeyType == UIReturnKeyGo) { [_textField resignFirstResponder]; // go off and perform 'go' } else { if(_textField == m_fieldA) [m_fieldB becomeFirstResponder]; if(_textField == m_fieldB) [m_fieldC becomeFirstResponder]; if(_textField == m_fieldC) [m_fieldA becomeFirstResponder]; } return true; } @end </code></pre> <p>Then in the XIB create three <code>UITextFields</code> and hooked them up to the <code>IBOutlets</code>, <code>IBActions</code>, and also set this view controller as the <code>delegate</code> for all the fields.</p> <p><strike>All seems to work fine regardless of secure fields.</p> <p>My guess is that your issue is somewhere in the code where you move to the 'Next' field; and not in the code that you posted. Also make sure that all your outlets and delegates are linked up properly.</strike></p> <hr> <p><strong>Update</strong>: I've edited the code above. The commented out lines were the problem, you should be using <code>reloadInputViews</code> to update the button.</p> <p>It seems that it wasn't locking the keyboard; but what it was doing was after you typed the first letter and did the resign/become calls to refresh the button then the second press would overwrite the first. This seems like a bug in iOS... it's more noticeable if after the first letter you type a space. When I noticed that I added a label that updated it's content with the contents of the password field and it was even more clear what was happening.</p>
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    1. POChanging returnButton while editing freezes keyboard for 1 tap
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    1. COThat's odd, I'll check my code against yours.
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    2. COI copied your code but it won't stop freezing.
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    3. COHmm; there must be something else. What SDK, iOS, and device are you using? Did you try making a new project to test it? Or just using your current one?
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