Question

I would like to check if my NSString end with @2x.png (case insensitive). How can I do that?

I have this code now, but it seems to ignore the @2x part.

    NSString *fileName = [_sourcePath lastPathComponent];
    [fileName stringByReplacingOccurrencesOfString:@"@2x" withString:@""];
    [fileName stringByReplacingOccurrencesOfString:@"@2X" withString:@""];
    NSLog(@"Filename: %@", fileName);

2012-01-01 21:00:55.600 NewApp[23930:707] Filename: [e-mail]

Answer 1

You need to re-assign your variable because NSString is immutable (state cannot be modifieid). Try:

NSString *fileName = [_sourcePath lastPathComponent];
fileName = [fileName stringByReplacingOccurrencesOfString:@"2x" withString:@""];
fileName = [fileName stringByReplacingOccurrencesOfString:@"2X" withString:@""];
NSLog(@"Filename: %@", fileName);

Alternatively, if you want to do the replacements inline use a NSMutableString and replaceOccurrencesOfString:withString:options:range which will do the replacement inline.