How to clear previous text in UITextView before writing text?

Question

I want to clear previous text written on UITextView before new text is written on it. I did like this.

textView.text = @"";
textView.text = @"something";

But, previous text is not cleared. It overlaps with current text. Textview is non-editable.

Answer 1

You need to implement the UITextViewDelegate and the method, textViewDidBeginEditing. The following code sets the textView's text to @"" (nothing) when it starts editing.

- (void) textViewDidBeginEditing:(UITextView *) textView {
  [textView setText:@""];
}

Answer 2

Here is a code for swift

func textViewDidBeginEditing(textView: UITextView) {
        txtView.text = ""
        txtView.textColor = UIColor.blackColor()
    }

func textViewDidEndEditing(textView: UITextView) {
     if txtView.text.isEmpty {
         txtView.text = "Write your comment."
         txtView.textColor = UIColor.blackColor()
     }
}

func textView(textView: UITextView, shouldChangeTextInRange range: NSRange, replacementText text: String) -> Bool {
        if text == "\n"  // Recognizes enter key in keyboard
        {
            textView.resignFirstResponder()
            return false
        }
        return true
    }

Note : give delegate to your textview