Post data on web server with web service - objective-c

Question

Hello I am tying to save data on web server with a web service implemented in PHP.
I am trying below code to do it. I am getting response from server but the data is not getting saved to server. I have wasted 5-6 hours of the day in googling and trying code given on net. But nothing seems to work :(
NSDictionary *someInfo = [NSDictionary dictionaryWithObjectsAndKeys:
txtTreasureName.text, #"name",
txtDescription.text, #"description",
txtMaterials.text, #"materials",
#"77.3833", #"longitude",
#"29.0167", #"latitude",
categoryIdStr, #"categoryId",
nil];
NSError *error;
NSData *jsonData = [NSJSONSerialization dataWithJSONObject:treasureInfo
options:NSJSONWritingPrettyPrinted
error:&error];
if (! jsonData) {
DLog(#"Got an error: %#", error);
} else {
NSMutableURLRequest *request = [[NSMutableURLRequest alloc] init];
NSString *urlString = #"http://www.myurl.php";
NSURL *url = [NSURL URLWithString:urlString];
[request setURL:url];
[request setHTTPMethod:#"POST"];
[request setValue:#"application/json"
forHTTPHeaderField:#"Content-Type"];
[request setValue:#"application/json"
forHTTPHeaderField:#"Accept"];
[request setValue:[NSString stringWithFormat:#"%d",
[jsonData length]]
forHTTPHeaderField:#"Content-length"];
[request setHTTPBody:jsonData];
DLog(#"%#", request);
[[NSURLConnection alloc]
initWithRequest:request
delegate:self];
// Print json
DLog(#"JSON summary: %#", [[NSString alloc] initWithData:jsonData
encoding:NSUTF8StringEncoding]);
NSOperationQueue *queue = [[NSOperationQueue alloc] init];
[NSURLConnection sendAsynchronousRequest:request
queue:queue
completionHandler:^(NSURLResponse *response,
NSData *data, NSError *error) {
if ([data length] &&
error == nil) {
DLog(#"%#", [[NSString alloc] initWithData:data
encoding:NSUTF8StringEncoding]);
if ([self shouldDismiss]) {
[self dismissViewControllerAnimated:YES
completion:nil];
}
}
}];
}

Answer 1

Set Request URL in the function,
You have alread y created data Dictionary
NSDictionary *someInfo = [NSDictionary dictionaryWithObjectsAndKeys:
txtTreasureName.text, #"name",
txtDescription.text, #"description",
txtMaterials.text, #"materials",
#"77.3833", #"longitude",
#"29.0167", #"latitude",
categoryIdStr, #"categoryId",
nil];
Add this function to your implementation file and invoke it, rest will be dont by this function
[self postWith:someInfo];
Add this
- (void)postWith:(NSDictionary *)post_vars
{
#warning Add your Webservice URL here
NSString *urlString = [NSString stringWithFormat:#"YourHostString"];
NSURL *url = [NSURL URLWithString:urlString];
NSString *boundary = #"----1010101010";
// define content type and add Body Boundry
NSString *contentType = [NSString stringWithFormat:#"multipart/form-data; boundary=%#",boundary];
NSMutableURLRequest *request = [NSMutableURLRequest requestWithURL:url];
[request setHTTPMethod:#"POST"];
[request addValue:contentType forHTTPHeaderField: #"Content-Type"];
NSMutableData *body = [NSMutableData data];
[body appendData:[[NSString stringWithFormat:#"--%#\r\n", boundary] dataUsingEncoding:NSUTF8StringEncoding]];
NSEnumerator *enumerator = [post_vars keyEnumerator];
NSString *key;
NSString *value;
NSString *content_disposition;
while ((key = (NSString *)[enumerator nextObject])) {
value = (NSString *)[post_vars objectForKey:key];
content_disposition = [NSString stringWithFormat:#"Content-Disposition: form-data; name=\"%#\"\r\n\r\n", key];
[body appendData:[content_disposition dataUsingEncoding:NSUTF8StringEncoding]];
[body appendData:[value dataUsingEncoding:NSUTF8StringEncoding]];
[body appendData:[[NSString stringWithFormat:#"\r\n--%#\r\n", boundary] dataUsingEncoding:NSUTF8StringEncoding]];
}
//Close the request body with Boundry
[body appendData:[[NSString stringWithFormat:#"\r\n--%#--\r\n",boundary] dataUsingEncoding:NSUTF8StringEncoding]];
[request setHTTPBody:body];
[request addValue:[NSString stringWithFormat:#"%d", body.length] forHTTPHeaderField: #"Content-Length"];
NSData *returnData = [NSURLConnection sendSynchronousRequest:request returningResponse:nil error:nil];
NSString *returnString = [[NSString alloc] initWithData:returnData encoding:NSUTF8StringEncoding];
NSLog(#"%#", returnString);
}