objective-c : 텍스트 뷰에서 타이핑시 캐럿 보여주기

snippet.m

//show Caret on UITextView when typing
- (void)textDidChange:(id <UITextInput>)textInput
{
    [self _showTextViewCaretPosition:textView];
}


- (void)textViewDidChangeSelection:(UITextView *)aTextView {
    [self _showTextViewCaretPosition:aTextView];
}


- (void)_showTextViewCaretPosition:(UITextView *)aTextView {
    CGRect caretRect = [aTextView caretRectForPosition:self.textView.selectedTextRange.end];
    [aTextView scrollRectToVisible:caretRect animated:NO];
}