How to Find a Substring in the String in Objective-c

Question

I want to find a word in a string i.e,whether a word is present in particular string or not.

String 1 Has:

Case Number
1
SKU Barcode

String 2 Has:

Case Number

I want to find whether Case Number is present in string 1 or not .

if ([string1 rangeOfString:string2].location !=NSNotFound) {

        NSLog(@"matched");} 
else 
{ NSLog(@"not matched");}

but here i am getting not matched ...why ..And then what is the difference of using .location and .length Output:

2017-05-04 11:38:33.128495 Link[26540:17390387] String 1: Case Number
1
SKU Barcode

2017-05-04 11:38:33.129301 Link[26540:17390387] String 2: Case Number

Thanks in advance!

Possible duplicate of How do I check if a string contains another string in Objective-C? — RajeshKumar R
– RajeshKumar R, Commented May 4, 2017 at 5:09
@RajeshkumarR, I am using same only but why i am getting not matched result ..i am asking that only .Please help me — Chandrika Visvesh
– Chandrika Visvesh, Commented May 4, 2017 at 5:14
Could you log [string1 dataUsingEncoding:NSUTF8StringEncoding] and the same for string2? There may be a invisible space between them or something like that. — Larme
– Larme, Commented May 4, 2017 at 12:22

RajeshKumar R · Accepted Answer · 2017-05-04 06:00:59Z

1

NSString *string1 = @"Case Number \n 1 \n SKU Barcode";
NSString *string2 = @"Case Number";
if ([string1 rangeOfString:string2].location !=NSNotFound) {

    NSLog(@"matched");}
else
{ NSLog(@"not matched");}

}

It works for me.

edited May 4, 2017 at 6:00

answered May 4, 2017 at 5:31

RajeshKumar R

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5 Comments

Chandrika Visvesh Over a year ago

,String one 1 has three lines ,case number is in 1st line ,1 in 2nd line , SKU Barcode in 3 rd line

RajeshKumar R Over a year ago

Can you show how you've created string1 and string2?

Chandrika Visvesh Over a year ago

It is coming from server , i have not created this string

RajeshKumar R Over a year ago

@ChandrikaVisvesh Can you NSLog string1 and string2 and paste here?

RajeshKumar R Over a year ago

Let us continue this discussion in chat.

norders · Accepted Answer · 2017-05-04 06:50:57Z

1

If you are supporting iOS 8.0 onwards, you can use containsString:

if ([string1 containsString:string2])
    NSLog(@"matched");
else
    NSLog(@"not matched");

If this doesn't work, then there's something wrong with one or both of your strings (e.g. additional space or control characters at the end).

answered May 4, 2017 at 6:50

norders

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Comments

digitalR · Accepted Answer · 2017-05-08 21:38:57Z

0

Your string2 contains characters other than @"Case Number". Test by inserting the following lines into your code.

if([string2 isEqualToString:@"Case Number"]) NSLog(@"String 2 is OK");
else NSLog(@"String 2 is bad!");

answered May 8, 2017 at 21:38

digitalR

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