Objective-c – UITextView has no events

cocoa-touchiphoneobjective cuikituitextview

I am developing an iPhone application which requires a multiline text field (UITextView) to capture some text.

When the user touches inside the textView it becomes firstResponder and displays the keyboard. What I really need it to do is remove the keyboard when the user is finished. Normally with a text field the return/done button press would signal the end of typing and I would use the delegate to resign first responder. However with a multiline textview I want the user to be able to add a new line so that is not possible.

My next option would be to resign first responder if there is a touch up outside of the text view. The problem here is that there are no events declared on UITextView which I can see in interface builder.

How can I create a multiline text field in an iPhone app which will release first responder at a sensible time when the user is done with it?

Best Answer

You can use a DONE button on the navigation bar:

- (void)viewDidLoad {
      [super viewDidLoad];
  self.navigationItem.rightBarButtonItem = [[UIBarButtonItem alloc] initWithBarButtonSystemItem:UIBarButtonSystemItemDone target:self action:@selector(doneAction:)];
}

to dismiss the keyboard, handle the event with something like:

- (void) doneAction: (id) sender{ [textView resignFirstResponder]; }

(remember .h file declarations)

Related Solutions

Ios – How to size a UITextView to its content

This works for both iOS 6.1 and iOS 7:

- (void)textViewDidChange:(UITextView *)textView
{
    CGFloat fixedWidth = textView.frame.size.width;
    CGSize newSize = [textView sizeThatFits:CGSizeMake(fixedWidth, MAXFLOAT)];
    CGRect newFrame = textView.frame;
    newFrame.size = CGSizeMake(fmaxf(newSize.width, fixedWidth), newSize.height);
    textView.frame = newFrame;
}

Or in Swift (Works with Swift 4.1 in iOS 11)

let fixedWidth = textView.frame.size.width
let newSize = textView.sizeThatFits(CGSize(width: fixedWidth, height: CGFloat.greatestFiniteMagnitude))
textView.frame.size = CGSize(width: max(newSize.width, fixedWidth), height: newSize.height)

If you want support for iOS 6.1 then you should also:

textview.scrollEnabled = NO;

Ios – How to dismiss the keyboard when editing a UITextField

I set the delegate of the UITextField to my ViewController class.

In that class I implemented this method as following:

- (BOOL)textFieldShouldReturn:(UITextField *)textField {
    [textField resignFirstResponder];
    return NO;
}

Best Answer

Related Solutions

Ios – How to size a UITextView to its content

Ios – How to dismiss the keyboard when editing a UITextField

Related Topic