How to check string contains characters?

Question

How to check a string contains a particular character or word. In my case I have a string "red manual". Here I have to check for "red ma" in my string. I tried it by using range of string methods but its not satisfying the condition.

Here is my code

 NSString *string = @"red manual";
 NSRange newlineRange = [string rangeOfString:@"red ma"];
 if(newlineRange.location != NSNotFound) 
 {
     NSLog(@"found");
 }
 else
 {
     NSLog(@"not found");
 }

Possible duplicate? http://stackoverflow.com/questions/2753956/how-do-i-check-if-a-string-contains-another-string-in-objective-c — Josip B., Apr 08 '14 at 12:28
Welcome to stackoverflow. Please note just because you are using the `xcode IDE` doesn't mean you should be using the `xcode` tag. The `xcode` tag is reserved for issues relating to the `xcode IDE` itself not issues you are having writing code in the `xcode IDE`. When asking a question if you think you need to use the `xcode` tag more than likely you shouldn't be using it at all. — Popeye, Apr 08 '14 at 12:29

score 7 · Answer 1 · edited May 23 '17 at 11:59

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

The key is noticing that rangeOfString: returns an NSRange struct, and the documentation says that it returns the struct {NSNotFound, 0} if the "haystack" does not contain the "needle".

And if you're on iOS 8 or OS X Yosemite, you can now do:

NSString *string = @"hello bla blah";
if ([string containsString:@"bla"]) {
  NSLog(@"string contains bla!");
} else {
  NSLog(@"string does not contain bla");
}

it is answered here

score 1 · Answer 2 · answered Apr 08 '14 at 12:38

1

Try following:

 NSString *data = @"red manual";

 if ([data rangeOfString:@"red ma" options:NSCaseInsensitiveSearch].location == NSNotFound) {
    NSLog(@"not matched");
 }
 else {
    NSLog(@"matched");
}

answered Apr 08 '14 at 12:38

Uniruddh

4,427
3
52
86

Which way is the check happening? Is it checking if @"red ma" contains any of the characters from data or, is it checking if data has any of the characters from @"red ma"? – Supertecnoboff Feb 17 '16 at 15:25
1

@Supertecnoboff: this will check if data has @"red ma" string in it or not. – Uniruddh Feb 18 '16 at 05:51

score 0 · Answer 3 · answered Apr 08 '14 at 12:29

0

Have a look at this great NSHipster page about NSRange, it should explain things a bit better than Apple's documentation.

answered Apr 08 '14 at 12:29

tagyro

1,638
2
21
36

score 0 · Answer 4 · answered Apr 08 '14 at 12:45

0

NSString *string = @"red manual";
if([string rangeOfString:@"red ma"].location == NSNotFound)
{
    NSLog(@"not found");
}
else
{
     NSLog(@"found");
}

answered Apr 08 '14 at 12:45

Bipin Patel

228
1
5

How to check string contains characters?

4 Answers4