Find one string in another with case insensitive in Objective-C

Question

My question is similar to How do I check if a string contains another string in Objective-C?

How can I check if a string (NSString) contains another smaller string but with ignoring case?

NSString *string = @"hello bla bla";

I was hoping for something like:

NSLog(@"%d",[string containsSubstring:@"BLA"]);

Anyway is there any way to find if a string contains another string with ignore case ? But please do not convert both strings to UpperCase or to LowerCase.

Answer 1

As similar to the answer provided in the link, but use options.

See - (NSRange)rangeOfString:(NSString *)aString options:(NSStringCompareOptions)mask in Apple doc

NSString *string = @"hello bla bla";

if ([string rangeOfString:@"BLA" options:NSCaseInsensitiveSearch].location == NSNotFound)
{
    NSLog(@"string does not contain bla");
} 
else 
{
    NSLog(@"string contains bla!");
}