How to post data through json in iOS - iphone

Question

I have attempted to post data into server through json. Suppose i have just one field named username into my xib. Now i am posting this data into server. I have written this code
NSString *uname=txt_name.text;
NSMutableURLRequest *request =[[NSMutableURLRequest alloc] initWithURL:
[NSURL URLWithString:#"http://mypath/index.php?params=123"]];
[request setHTTPMethod:#"POST"];
// NSString *postString = #"Email=me#test.com";
[request setValue:[NSString
stringWithFormat:#"%d", [uname length]]
forHTTPHeaderField:#"Content-length"];
[request setHTTPBody:[uname
dataUsingEncoding:NSUTF8StringEncoding]];
[[NSURLConnection alloc]
initWithRequest:request delegate:self];
NSLog(#"text",uname);
But i do not know the data is posting or not. I want to post my input data into console of in Xcode but there nothing is showing. What the reason..? Whats wrong is going on..?

Answer 1

You need the following request:
NSDictionary *dataDict = #{#"uname": <YOUR_UNAME>};
NSData *postData = [NSJSONSerialization dataWithJSONObject:dataDict options:0 error:nil];
NSMutableURLRequest *request =[[NSMutableURLRequest alloc] initWithURL:[NSURL URLWithString:#"http://mypath/index.php?params=123"]];
[request setHTTPMethod:#"POST"];
[request setHTTPBody:postData];
[request setValue:[NSString stringWithFormat:#"%d",postData.length] forHTTPHeaderField:#"Content-Length"];
[request setValue:#"application/json; charset=utf-8" forHTTPHeaderField:#"Content-Type"];
To ensure the server have got your data use
- (void) connection:(NSURLConnection *)connection didReceiveResponse:(NSURLResponse *)response
{
NSHTTPURLResponse *httpResponse = (NSHTTPURLResponse *)response;
NSInteger statusCode = httpResponse.statusCode;
...........
}
In case of success you will get statusCode = 200.

Answer 2

NSString *string= [NSString stringWithFormat:#"your Url.php?&Username=%#",username];
NSLog(#"%#",string);
NSURL *url = [NSURL URLWithString:string];
NSMutableURLRequest *request = [NSMutableURLRequest requestWithURL:url];
[request setHTTPMethod:#"POST"];
NSURLResponse *response;
NSError *err;
NSData *responseData = [NSURLConnection sendSynchronousRequest:request returningResponse:&response error:&err];
NSLog(#"responseData: %#", responseData);
NSString *str = [[NSString alloc] initWithData:responseData encoding:NSUTF8StringEncoding];
NSLog(#"responseData: %#", str);
NSString *str1 = #"1";
if ([str isEqualToString:str1 ])
{
UIAlertView *alert = [[UIAlertView alloc]initWithTitle:#"Successfully" message:#"" delegate:nil cancelButtonTitle:#"Ok" otherButtonTitles:nil, nil];
[alert show];
}
else
{
UIAlertView *alert = [[UIAlertView alloc]initWithTitle:#"Try Again" message:#"" delegate:self cancelButtonTitle:#"Try Later" otherButtonTitles:#"Call", nil];
alert.tag = 1;
[alert show];
}
Don't need to use JSON you can do this without JSON in a esay way!!!