How to find a pixel-positon of a cursor in UITextView?

Question

I\'m developing a simple writing app for iPad.

I\'m trying to compute the pixel-position of the cursor in UITextView. I spend a few weeks to design this

Answer 1

If you target to IOS7 only you could use UITextView method:

- (CGRect)caretRectForPosition:(UITextPosition *)position;

Short sample:

NSRange range; // target location in text that you should get from somewhere, e.g. textview.selectedRange
UITextView textview; // the text view

UITextPosition *start = [textview positionFromPosition:textview.beginningOfDocument offset:range.location];
CGRect caretRect = [self caretRectForPosition:start]; // caret rect in UITextView

Answer 2

This is probably rather inefficient, but could you take the same basic principal of the code you have posted and take the line of text the cursor is on, and loop through each individual character and do [NSString sizeWithFont:forWidth:lineBreakMode:] to calculate each character's width, and you could add all those up for your x position? Just an idea, but may help fix the issue with word wrapping.