Hiding the Keyboard when losing focus on a UITextView

Question

So I have a UITextView that I\'m using to allow the user to submit some text.

My problem is, I can\'t seem to figure out how to allow the user to \'Cancel\' by tappi

Answer 1

In my view:

- (void)touchesBegan:(NSSet *)touches withEvent:(UIEvent *)event {
    UITouch *touch = [touches anyObject];

    // pass touches up to viewController
    [self.nextResponder touchesBegan:touches withEvent:event];
}

In my viewcontroller:

- (void)touchesBegan:(NSSet *)touches withEvent:(UIEvent *)event {

    UITouch *touch = [[event allTouches] anyObject];
    if (keyboardShown && [touch view] != self.TextView) 
    {
         [self.TextView resignFirstResponder];
    }
    [super touchesBegan:touches withEvent:event];
}

- (void)keyboardWasShown:(NSNotification*)aNotification
{    
        keyboardShown = YES;
}

Answer 2

Another approach I used a lot when working with UITableViews, Searchbar and keyboard is this, I think you can apply it to text field

UITapGestureRecognizer *gestureRecognizer = [[UITapGestureRecognizer alloc] initWithTarget:self action:@selector(hideKeyboard)];
[self.tableView addGestureRecognizer:gestureRecognizer];
gestureRecognizer.cancelsTouchesInView = NO;  // this prevents the gesture recognizers to 'block' touches
[gestureRecognizer release];

And then, here's the simple callback function

- (void)hideKeyboard {
    [myTextField resignFirstResponder];
}

Hope it helps

Answer 3

Simplifying tuzzolotron's answer: Where the following outlet is properly connected in your xib

    IBOutlet UITextView *myTextView;

Use this in the view controller:

- (void)touchesBegan:(NSSet *)touches withEvent:(UIEvent *)event {

    UITouch *touch = [[event allTouches] anyObject];
    if ([myTextView isFirstResponder] && [touch view] != myTextView) {
        [myTextView resignFirstResponder];
    }
    [super touchesBegan:touches withEvent:event];
}

A tap on the View Controller's View, outside of the Text View, will resign the first responder, closing the keyboard.

Answer 4

Very easy

-(void)touchesBegan:(NSSet *)touches withEvent:(UIEvent *)event
{
    [self.view endEditing:YES];
}

Answer 5

I wanted a version of this that worked for resigning from any view, without requiring specific outlets for each one.. Here is my solution, which I put into one of my standard container views..

It's using MonoTouch C#, though it should be obvious how to convert it to Objective-C

    private void findAndResignFirstResponder(UIView node=null) {
        if (node == null) { return; }
        if (node.IsFirstResponder) {
            node.ResignFirstResponder();
            return;
        }

        foreach (UIView view in node.Subviews) {
            findAndResignFirstResponder(node:view);
        }
    }

    private bool haveDrag = false;
    public override void TouchesEnded(NSSet touches, UIEvent evt) {
        if (!haveDrag) {
            UITouch touch = (UITouch)evt.AllTouches.AnyObject;
            if (!touch.View.CanBecomeFirstResponder) {
                this.findAndResignFirstResponder(this);
                Console.WriteLine("resign");
            }
        }
        base.TouchesEnded (touches, evt);
    }
    public override void TouchesMoved(NSSet touches, UIEvent evt) {
        haveDrag = true;
        base.TouchesMoved (touches, evt);
    }

    public override void TouchesBegan(NSSet touches, UIEvent evt) {
        haveDrag = false;
        base.TouchesBegan (touches, evt);
    }

Answer 6

override func touchesBegan(touches: NSSet, withEvent event: UIEvent) {
    var touch = event.allTouches()?.anyObject() as UITouch

    if( textfield.isFirstResponder() && touch.view != textfield) {
        textfield.resignFirstResponder()
        NSLog("Resigning first responder since touches began outside")
    }

    super.touchesBegan(touches, withEvent: event)
}

ohhorob's answer worked for me too. Here's the simple swift equivalent.