iOS Day 8

fetchdata1.m

- (IBAction)btnFetchData1:(id)sender {
    NSString *queryString = [NSString stringWithFormat:@"http://chrisrisner.com/Labs/day7test.php?name=%@", [self.txtName text]];
    NSMutableURLRequest *theRequest=[NSMutableURLRequest
                requestWithURL:[NSURL URLWithString:
                            queryString]
                cachePolicy:NSURLRequestUseProtocolCachePolicy
                timeoutInterval:60.0];
    [theRequest setHTTPMethod:@"POST"];
    NSURLConnection *con = [[NSURLConnection alloc] initWithRequest:theRequest delegate:self];
    if (con) {
        _receivedData=[NSMutableData data];
    } else {
        //something bad happened
    }
}

fetchdata2.m

[theRequest setHTTPMethod:@"POST"];  
NSString *post = [NSString stringWithFormat:@"postedValue=%@", [self.txtName text]];
NSData *postData = [post dataUsingEncoding:NSASCIIStringEncoding];
[theRequest setHTTPBody:postData];

serializationOfJson.m

NSMutableURLRequest *theRequest=[NSMutableURLRequest
                          requestWithURL:[NSURL URLWithString:
                                          queryString]
                          cachePolicy:NSURLRequestUseProtocolCachePolicy
                          timeoutInterval:60.0];
NSDictionary* jsonDictionary = [NSDictionary dictionaryWithObjectsAndKeys:
                                @"Value1", @"Key1",
                                @"Value2", @"Key2",
                                nil];
NSError *error;
NSData* jsonData = [NSJSONSerialization dataWithJSONObject:jsonDictionary
                       options:NSJSONWritingPrettyPrinted error:&error];
[theRequest setHTTPMethod:@"POST"];
[theRequest addValue:@"application/json" forHTTPHeaderField:@"Content-Type"];

// should check for and handle errors here but we aren't
[theRequest setHTTPBody:jsonData];