uiTextView placeholder trick

gistfile1.m

-(void) viewDidLoad{
  [textView setDelegate:self];
}

-(void) textViewDidBeginEditing:(UITextView *)textView{
    if ([textView.text isEqualToString:@"placeholder text here..."]) {
         textView.text = @"";
         textView.textColor = [UIColor blackColor]; //optional
    }
    [textView becomeFirstResponder];
}

-(void) textViewDidEndEditing:(UITextView *)textView{
    if ([textView.text isEqualToString:@""]) {
        textView.text = @"placeholder text here...";
        textView.textColor = [UIColor lightGrayColor]; //optional
    }
    [textView resignFirstResponder];
}