Compare strings from the Internet

Question

Hi everyone, I am trying to read a file on the Internet that says “this is a test” and I want to compare it ... so this is what I got:

NSError *error;
NSURL *theURL = [NSURL URLWithString:@"http://mysite.com/test.asp"];
NSString *test = [NSString stringWithContentsOfURL:theURL encoding:NSASCIIStringEncoding error:&error];

NSLog(@"%@",test); //prints the results.. .does work


if(test == "this is a test"){
    NSLog(@"File read");
} else {
    NSLog(@"Bad file");
}

What am I doing wrong here? I always get a Bad File, but I know that it pulls the text. Thank you all

Damien

Answer 1

You also need to check for null and use the isEqualToString function for comparison.

if(test != nil){

    if([test isEqualToString:@"this is a test"]) {
       // equal
    }
    else{
      // not equal
    }
}

else{

   NSLog(@"Bad file");

}

Answer 2

If you use ==, you will compare two pointers. Use isEqual:as follows:

if([test isEqual: @"this is a test"]) {
    // equal
}else{
    // not equal
}

Answer 3

, .

– caseInsensitiveCompare:
– localizedCaseInsensitiveCompare:
– compare:
– localizedCompare:
– compare:options:
– compare:options:range:
– compare:options:range:locale:
– localizedStandardCompare: