Handle keyboard "Done" press on text field.

[shawn]

All I really need is the keyboard to close when the "Done" button is clicked on the keyboard window; could someone point me towards how I should do this?

I have searched around on the developer.apple.com/iphone site but I can't find anything; I have also reviewed the functionality in the UICatalog sample app but it displays its textfields as part of a tableview which appears to have different editing events...

Any help is appreciated!

[hijinks]

you need to return the delegate to the view

- (BOOL)textFieldShouldReturn:(UITextField *)theTextField {
        [theTextField resignFirstResponder];
        return YES;
}

[shawn]

Do I need to do anything to hook the delegate up to the textbox or just make sure it is available on the view controller which contains the text box?

[hijinks]

set the delegate = self for the text field property

[shawn]

I pretty much copy and pasted your event handler into my ViewControllerSubClass, I then added a text box in Interface Builder and bound it to a UITextField outlet property. I set the myTextField.delegate = self in the ViewController.initWIthNibName method. Everything seems to get executed and go without a hitch but it still doesn't close the keyboard when I click done...

Also I get a warning at the line where I assign the delegate saying "warning class 'MyViewController' does not implement the 'UITextFieldDelegate' protocol"... any idea how to make this warning go away?

[hijinks]

well you need to tell your class it will be a delegate. So for example

@interface OptionsAccountCell : UITableViewCell <UITextFieldDelegate> {

You are missing that in your .h file

[Pring]

Originally Posted by shawn

Also I get a warning at the line where I assign the delegate saying "warning class 'MyViewController' does not implement the 'UITextFieldDelegate' protocol"... any idea how to make this warning go away?

Make your view controller implement that protocol would do it :P


Your header should look like

@interface MyViewController : UIViewController <UITextFieldDelegate>

The HelloWorld example shows how to do this.

[incorrect.user]

I thought i need only to setup an empty callback (ie IBAction) for "Did End On Exit" event of the UITextField (as IBOutlet) in the InterfaceBuilder!

Like this:

//header

@interface MyView : UIView
{
IBOutlet UITextField *name;
}

And the keyboard will be hidden after editing is complete.

And the keyboard will be hidden after editing ends.

- (IBAction)doneButtonOnKeyboardPressed: (id)sender;

//m-file

@implementation MyView

- (IBAction)doneButtonOnKeyboardPressed: (id)sender
{}

@end

[megatron]

Originally Posted by incorrect.user

I thought i need only to setup an empty callback (ie IBAction) for "Did End On Exit" event of the UITextField (as IBOutlet) in the InterfaceBuilder!

Like this:

//header

@interface MyView : UIView
{
IBOutlet UITextField *name;
}

And the keyboard will be hidden after editing is complete.

And the keyboard will be hidden after editing ends.

- (IBAction)doneButtonOnKeyboardPressed: (id)sender;

//m-file

@implementation MyView

- (IBAction)doneButtonOnKeyboardPressed: (id)sender
{}

@end

If you haven't sorted it out yet you do the following:
In your .h file type:

@interface WhatEverViewController : UIViewController <UITextFieldDelegate> {
	IBOutlet UITextField * firstTextField;
	IBOutlet UITextField * secondTextField;
	IBOutlet UITextField * doneButtonPressed;
}
@property (nonatomic, retain) IBOutlet UITextField * firstTextField;
@property (nonatomic, retain) IBOutlet UITextField * secondTextField;
@property (nonatomic, retain) IBOutlet UITextField * doneButtonPressed;

@end

In your .m file add the following: (replace with your own info)

@synthesize firstTextField, secondTextField, doneButtonPressed;

- (BOOL)textFieldShouldReturn:(UITextField *)doneButtonPressed {
	NSLog(@"Keyboard Done Pressed");
	
	[doneButtonPressed resignFirstResponder];

	return YES;
}

In you nib file select your UITextField and make the delegate the FilesOwner, do this for all TextFields and the keyboard will hide when the done button is pressed.

[initself]

What if you don't want the keyboard to pop-up once the first field is selected as a first responder? Basically, what if you don't want a particular field to be the first responder, but you want the Done button functionality?