UiTextField events

Question

When I create UITextField inside Interface Builder, I can access Events tab for it, which has events like Value changed, Touch cancel, Touch drag, etc. I can assign my own m

Answer 1

Instead of UIControlEventValueChanged, you should use UIControlEventEditingChanged:

[_titleTextField addTarget:self action:@selector(handleTitleValueChanged:) forControlEvents:UIControlEventEditingChanged];

Answer 2

Refer to Apple documentation for UIControl. After initializing your textField, call addTarget:action:forControlEvents:

example for the touch event ending an edit session

[textField addTarget:self action:@selector(handleTouchValueChanged:) forControlEvents: UIControlEventEditingDidEnd]

Answer 3

UIControlEventEditingChanged fires whenever user changes value [synchronous with typing or keyup] which could cause extra hits to your data handler routine, if you're saving values based on that event, expecting it to be some kind of final value from user input...