edit the UITextField.text property directly the UITextFieldDelegate will not fire

If you edit the UITextField.text property directly the UITextFieldDelegate will not fire. Is there a proper way of using the UITextField with a custom input view? I created my own numberpad viewcontroller, and I can modify the UITextField.text but I can not get the cursor location if I don't receive events from UITextFieldDelegate.shou开发者_JAVA百科ldChangeCharactersInRange.

Any idea on what's the proper way of using a custom input with UITextField?

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please make sure

yourTextField.delegate = self

this line in your implementation file

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I also created a custom numpad for our application. You're right that shouldChangeCharactersInRange doesn't respond to programmatic text changes (via setText). We use the UIControlEventEditingChanged event on the text field:

[aField addTarget:self action:@selector(editingChanged:) forControlEvents:UIControlEventEditingChanged];

Unfortunately, there's currently no way to access the cursor position of a UITextField outside of shouldChangeCharactersInRange. You can insert text at the cursor using this pasting method. As for a custom delete key, we are going with the "always delete the last character in the field" rule for now.