Problem in String camparisson ...!

Question

hi ,

here is my code :

NSUInteger f;
  for (f = 0; f < [appDelegate.books count]; f++) {
    check = [appDelegate.books objectAtIndex:f];

 checkthis = check.LotteryNumber;


        mystring = check.LotteryNumber;
 NSLog(@"Dynamic Value: %@",mystring);
 NSLog(@"Static Value: %@",checkthis);

 if (checkthis == mystring) {
        found = YES;
        break;
    }
 printf("In LOOP");
}
if ( found ) {
    // do found
 NSLog(@"Found");
} else {
    // do not found
 NSLog(@"not Found");
}


 //if (checkthis == mystring) {

in above line if i place checkthis on both side , its working , but when i am taking a dynamic value its not working.. i also tried like this

if(checthis isEqualToString mystring)

same problem here ....

Thanks in advance

Answer 1

You're using pointer comparison and not string comparison.

You should be using:

if([checkThis isEqualToString:myString]) { ...

Answer 2

You are using comparision by pointer the comparison you made checks memory a ddresses and will only return true if its the same object being compared, you should use [string isEqualToString:otherString] method from NSString instead