enabling the "return button" in a UITextField keyboard (objective-c/iphone)

iphone objective-c uitextfield uikeyboard
peter61 picture peter61 · May 23, 2010 · Viewed 15.5k times · Source

When I start editing a UITextField, I have the "Clear When Editing Begins" option checked so it starts off with no text. However, the "Return" button is grayed out until you type at least one character.

I've seen other iphone apps where the "Return" button is not grayed out (and if you press it with no text, then it goes back to what the text used to be). How is this done?

Thanks.

Answer

Endemic picture Endemic · May 23, 2010

UITextView and UITextField implement the UITextInputTraits Protocol. The protocol specifies a property called enablesReturnKeyAutomatically. Here's the description from the UITextInputTraits reference:

The default value for this property is NO. If you set it to YES, the keyboard disables the return key when the text entry area contains no text. As soon as the user enters any text, the return key is automatically enabled.

So, setting the property to NO after loading the TextField should do the trick.

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