Question

I have a case where the data read from the CSV file in the app has to be converted into an integer, has to be plotted later. Currently it doesn’t recognize when the data is saved as

int i=[[rows objectAtIndex:0] componentsSeparatedByString:@","];

This is the implemented code.

-(void)connection :(NSURLConnection *) connection didReceiveData:(NSData *)data{

    [self serverConnect];
    response = [[NSString alloc] initWithData:data encoding:NSUTF8StringEncoding];
    //NSLog(response);

    NSString *stripped1 = [response stringByReplacingOccurrencesOfString:@"\r" withString:@""];
    NSArray *rows = [stripped1 componentsSeparatedByString:@"\n"];

    NSArray *components;

    for (int i=0;i<[rows count]; i++) {
         if(i == 0 || [[rows objectAtIndex:i] isEqualToString:@""]){
             continue;
         }
        components = [[rows objectAtIndex:i] componentsSeparatedByString:@","];
        NSLog(@"data1:%@ data2:%@ data3:%@", [components objectAtIndex:0] ,[components objectAtIndex:1],[components objectAtIndex:2]);
    }

data1, data2 and data3 are supposed to be integers.

Thanks a lot.

Answer 1

componentsSeparatedByString returns substrings, or instances of NSString.

         components = [[rows objectAtIndex:i] componentsSeparatedByString:@","];

You just need to take each member of ‘components’ and get it’s intValue, like so:

int myInt = [[components objectAtIndex:n] intValue];