UITextView hide keyboard in iphone

Question

I want to hide keyboard when a user presses return in UITextView object in iphone. However, mysteriously this is not working for UITextView but working for UITextField. I am unable to figure out why...

This is what I did:

1) I created a view based application in XCode4.

2) in .xib created UITextView, UITextField and UIButton objects

3) Marked both UITextField and UITextView delegates to File's Owner in Outlets

4) Added <UITextFieldDelegate> to @interface UIViewController in .h

5) Added textFieldShouldReturn function in .m

Here are the codes:

.h file

@interface keyboardDisappearViewController : UIViewController <UITextFieldDelegate>
{

    UITextView *textBoxLarge;
    UITextField *textBoxLittle;
}
@property (nonatomic, retain) IBOutlet UITextView *textBoxLarge;
@property (nonatomic, retain) IBOutlet UITextField *textBoxLittle;

- (IBAction)doSomething:(id)sender;
@end

.m file

- (BOOL) textFieldShouldReturn:(UITextField *)theTextField 
{
    NSLog(@"textFieldShouldReturn Fired :)");
    [textBoxLarge resignFirstResponder];
    [textBoxLittle resignFirstResponder];
    return YES;
}

Amazingly, the keyboard is disappearing in case of textBoxLittle (UITextField) but not in case of textBoxLarge(UITextView)

As a further check I, made the button to call function doSomething

- (IBAction)doSomething:(id)sender {
    [textBoxLarge resignFirstResponder];
    [textBoxLittle resignFirstResponder];
}

When I am pressing the button, keyboard is disappearing in both textboxes.

Its driving me nuts why textFieldShouldReturn is working for small textbox, but NOT for large textbox.

Please Help!

Answer 1

Three things:

Make your view implement UITextViewDelegate.

@interface keyboardDisappearViewController : UIViewController
    <UITextFieldDelegate, UITextViewDelegate>

Add the following method:

- (BOOL)textView:(UITextView *)textView
        shouldChangeTextInRange:(NSRange)range
        replacementText:(NSString *)text
{
    if ([text isEqualToString:@"\n"])
    {
        [textView resignFirstResponder];
    }
    return YES;
}

Set the file's owner as delegate for the UITextView in the interface builder.

(BTW: Solution copied from the comments to the previous answer, as it took me a while to extract. I though others could benefit from my experience.)

Answer 2

You need to write code in UITextViewDelegate and assign it to your class.