Programe breakdown when make the delegate itself

Question

I want to add UITextView the function of Placeholder, so I do like this:

@interface UIPlaceholderTextView : UITextView <UITextViewDelegate>
{
    UILabel *placeholderLabel;
}

And when the text changed in the UITextView, the method is called:

#pragma UITextViewDelegate
-(void)textViewDidChange:(UITextView *)textView
{
    if (textView.text.length==0)
    {
        placeholderLabel.hidden=false;
    }
    else
    {
        placeholderLabel.hidden=true;
    }

}

In the IOS simulator 6.1 everything is ok. But the programe breakdown when I ran in IOS simulator 5.1, and I find the problem happens here :

self.delegate = self;

It seems that it is not appropriate to make delegate itself. But I don not know the exact reason , and what is the right way to do?

did you try http://stackoverflow.com/questions/1328638/placeholder-in-uitextview — Lalith B, Apr 15 '13 at 08:41
@iPatel it is not because of the function of placeholder that lead to the breakdown, but I make the delegate itself (self.delegate = self) that cause the breakdown. — itenyh, Apr 15 '13 at 08:42
why self.delegate? if you are using UITextview then declare the variable and make that variable.delegate = self; — Jean-Luc Godard, Apr 15 '13 at 10:28

score 0 · Answer 1 · answered Apr 15 '13 at 20:35

0

Where do you assign the delegate to itself? I put it in the initWithFrame and it just worked fine (even with iOS 5.1 deployment target)

answered Apr 15 '13 at 20:35

Peteee24

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Programe breakdown when make the delegate itself

1 Answers1