Objective-C Extract index of a range returned by rangeOfString:

Question

How to extract an NSUInteger index from

NSRange range = [string rangeOfString: substring]

so I can write this index in [array objectAtIndex:index]?

score 3 · Answer 1 · answered Oct 27 '11 at 22:07

3

NSRange range = [string rangeOfString:substring];
NSUInteger index = range.location;
//...

answered Oct 27 '11 at 22:07

omz

53,243
5
129
141

range.location returns a really big number if that substring is found in the way beginning of that string. Why is this? – coolcool1994 Aug 16 '13 at 16:44
@coolcool1994 did you find the reason ? I'm having the same problem – hoangpx Aug 30 '16 at 22:11

score 3 · Accepted Answer · answered Oct 27 '11 at 22:11

// make sure that the substring was actually found:
NSRange result = [string rangeOfString:substring];

if (result.location != NSNotFound)
{
    // make sure that the index exists in the array
    if (result.location < [array count])
    {
        id someObj = [array objectAtIndex:result.location];
        // do something cool with someObj here
    }
}

Objective-C Extract index of a range returned by rangeOfString:

2 Answers2