using UITextPosition, get previous character from textInRange
ios, nsstring, objective-c, uitextview
Solution
Check: Convert selectedTextRange UITextRange to NSRange to convert your `UITextRange` to a `NSRange` (that I'll call `selectedRange`).
Inspiring me with the previous answer to the linked question, you'd need to add this at the end of your code:
UITextPosition *beginning = TV.beginningOfDocument;
UITextPosition *selectionStart = textRange.start;
UITextPosition *selectionEnd = textRange.end;
NSInteger location = [TV offsetFromPosition:beginning toPosition:selectionStart];
NSInteger length = [TV offsetFromPosition:selectionStart toPosition:selectionEnd];
NSRange selectedRange = NSMakeRange(location,lenght);
NSRange range = NSMakeRange(selectedRange.location-1,1) //Maybe need to check if selectedRange.location>0
NSString *yourCharString = [[TV text] substringWithRange:range];
Problem
I've been searching high and low and can't figure out how to do this. Lets say I have a string like this: ``` NSString *string = @"&foo !foo"; ``` What I'm trying to do is differentiate between the two foos (sounds funny haha) inside a text view. When I click on one, I want to know which (& or !) comes before it. Here's how I'm getting the word: ``` UITapGestureRecognizer *recognizer = (UITapGestureRecognizer *)sender; UITextView *TV = (UITextView*)recognizer.view; CGPoint location = [recognizer locationInView:TV]; location.y += TV.contentOffset.y; UITextPosition *tapPosition = [TV closestPositionToPoint:CGPointMake(location.x, location.y)]; UITextRange *textRange = [TV.tokenizer rangeEnclosingPosition:tapPosition withGranularity:UITextGranularityWord inDirection:UITextLayoutDirectionRight]; NSString *tappedWord = [TV textInRange:textRange]; ``` I can't figure out how to get the previous character. `TV.tokenizer` `UITextGranularityCharacter` only gets the closest letter, not the symbol. Any solutions for this?