objective-c : UITextView 텍스트 한 칸 앞으로 또는 뒤로 가기

snippet.m

//텍스트 한 칸 앞으로 가기

-(void)gotoPrevChar
{
    
    UITextRange *selectedRange = [self.noteTextView selectedTextRange];
    
    //Calculate the new position, - for left and + for right
    if (self.noteTextView.selectedRange.location > 0) {
        
        UITextPosition *newPosition = [self.noteTextView positionFromPosition:selectedRange.start offset:-1];
        
        UITextRange *newRange = [self.noteTextView textRangeFromPosition:newPosition toPosition:newPosition];
        
        [self.noteTextView setSelectedTextRange:newRange]; //Set new range
        
    }
}

//텍스트 한 칸 뒤로 가기
-(void)gotoNextChar
{

    UITextRange *selectedRange = [self.noteTextView selectedTextRange];
    
    //Calculate the new position, - for left and + for right
    if (self.noteTextView.selectedRange.location < self.noteTextView.text.length) {
        
        UITextPosition *newPosition = [self.noteTextView positionFromPosition:selectedRange.start offset:1];
        
        UITextRange *newRange = [self.noteTextView textRangeFromPosition:newPosition toPosition:newPosition];
        
        [self.noteTextView setSelectedTextRange:newRange]; //Set new range
        
    }
}