Question

@interface SomeViewController : UIViewController <UITextViewDelegate>

@property (retain, nonatomic) IBOutlet UIImageView *imageView;
@property (nonatomic, retain) UIImage *image;

@property (nonatomic, retain) IBOutlet UITextView *textView;

I need textview(editable) in my view controller.

so I set protocol ,

and also, IB to the file’s owner, too. (I don’t know, is it unnecessary?)

And my .m file…. viewDidLoad..

_textView = [[UITextView alloc]init];
[_textView setFrame:CGRectMake(8, 110, 304, 82)];
[_textView setFont:[UIFont boldSystemFontOfSize:12]];
_textView.editable = YES;
//[textView setText:@"hdgffgsfgsfgds"];// if uncommented, this actually visible...

[self.view insertSubview:_textView atIndex:2];

So far, it’s working. But I want these methods to run…

- (void)textViewDidChange:(UITextView *)textView
{


    if([_textView.text length] == 0)
    {
        _textView.text = @"Foobar placeholder";
        _textView.textColor = [UIColor lightGrayColor];
        _textView.tag = 0;
    }
}

But after build, my textview is still empty.

What did I wrong?

Answer 1

You need to add the delegate to your textview, try with this:

_textView.delegate = self;

On the other hand,

textViewDidChange

Will only work when you change your text, if you want to place a text in the textview, you can do:

 _textView.text = @"Foobar placeholder";
        _textView.textColor = [UIColor lightGrayColor];
        _textView.tag = 0;

In your ViewdidLoad