In this line
NSData *jsonData = [NSJSONSerialization dataWithJSONObject:parameters options:NSJSONWritingPrettyPrinted error:&error];
i try to convert parameters (NSMutableDictionary) into NSData because i need it for a HTTPRequest.
It was working fine till now but now it crashes saying
Crash: Invalid type in JSON write (NSURL)
All parameters i give are NSString but 2 of those are in URL format but still NSString and thats where the error is, if i comment those 2 parameters everything is fine.
Any idea?
this is the code
+(NSDictionary*)facebookLogIn:(NSString*)facebookID fbEmail:(NSString*)fbEmail fbFullName:(NSString*)fbFullName profilePhoto:(NSString*)profilePhoto coverPhoto:(NSString*)coverPhoto
{
NSError *error;
NSMutableURLRequest *request = [[NSMutableURLRequest alloc] init];
NSString *requestString = [NSString stringWithFormat:#"%#login",API];
[request setURL:[NSURL URLWithString:requestString]];
[request setHTTPMethod:#"POST"];
[request setValue:#"Connection" forHTTPHeaderField:#"Keep-Alive"];
[request setCachePolicy:NSURLCacheStorageNotAllowed];
[request addValue:#"application/json" forHTTPHeaderField:#"Content-type"];
NSMutableDictionary *parameters = [[NSMutableDictionary alloc] init];
[parameters setObject:APIKEY forKey:#"APIKEY"];
[parameters setObject:facebookID forKey:#"fbUserID"];
[parameters setObject:fbEmail forKey:#"email"];
[parameters setObject:fbFullName forKey:#"fullName"];
[parameters setObject:profilePhoto forKey:#"profilePhoto"];
[parameters setObject:coverPhoto forKey:#"coverPhoto"];
NSData *jsonData = [NSJSONSerialization dataWithJSONObject:parameters options:NSJSONWritingPrettyPrinted error:&error];
NSString *jsonString = [[NSString alloc] initWithData:jsonData encoding:NSUTF8StringEncoding];
[request setHTTPBody:[jsonString dataUsingEncoding:NSUTF8StringEncoding]];
NSURLResponse *response;
NSData *POSTReply = [NSURLConnection sendSynchronousRequest:request returningResponse:&response error:nil];
NSString *theReply = [[NSString alloc] initWithBytes:[POSTReply bytes] length:[POSTReply length] encoding: NSASCIIStringEncoding];
NSDictionary *JSON = [NSJSONSerialization JSONObjectWithData: [theReply dataUsingEncoding:NSUTF8StringEncoding]
options: NSJSONReadingMutableContainers
error: &error];
Related
I am new to JSON and I am trying to send a post I am wondering if how can I check if I did it properly or check the return value of it. Here's what I've done
NSURL *url = [NSURL URLWithString:#"http://json.myurl.com/.....];
NSMutableURLRequest *request = [[NSMutableURLRequest alloc] initWithURL:url];
NSDictionary *tmp = [[NSDictionary alloc] initWithObjectsAndKeys:
#"email", #"Email",
#"password", #"FirstName",
nil];
NSError *error;
NSData *postdata = [NSJSONSerialization dataWithJSONObject:tmp options:0 error:&error];
[request setHTTPBody:postdata];
For a beginner, I would recommend using third party framework, widely used by iOS developers across the world, called AFNetworking.
By using AFNetworking, HTTP requests are simple as that:
AFHTTPSessionManager *manager = [[AFHTTPSessionManager alloc] initWithSessionConfiguration:[NSURLSessionConfiguration defaultSessionConfiguration]];
[manager POST:url parameters:parameters progress:nil success:^(NSURLSessionDataTask *task, id responseObject) {
// TODO: Parse success here!
} failure:^(NSURLSessionDataTask * _Nullable task, NSError * _Nonnull error) {
// TODO: Parse failure here!
}];
In given example, object responseObject is a representation of API response JSON object.
Installation and further usage instructions of AFNetworking can be found in their website.
To check JSON POST return value:
NSString *strUrl=[NSString stringWithFormat:#"http://json.myurl.com/....."];
NSString *webStringURL = [strUrl stringByAddingPercentEscapesUsingEncoding:NSUTF8StringEncoding];
NSURL *url = [NSURL URLWithString:webStringURL];
NSMutableURLRequest *request = [[NSMutableURLRequest alloc] init];
NSDictionary *tmp = [[NSDictionary alloc] initWithObjectsAndKeys:
#"email", #"Email",
#"password", #"FirstName",
nil];
NSError* error;
NSData* postData = [NSJSONSerialization dataWithJSONObject:tmp options:NSJSONWritingPrettyPrinted error: &error];
NSString *postLength = [NSString stringWithFormat:#"%lu", (unsigned long)[postData length]];
[request setURL:url];
[request setHTTPMethod:#"POST"];
[request setValue:postLength forHTTPHeaderField:#"Content-Length"];
[request setHTTPBody:postData];
[NSURLConnection sendAsynchronousRequest:request queue:[[NSOperationQueue alloc]init] completionHandler:^(NSURLResponse *response, NSData *jsonData, NSError *error)
{
if (!error)
{
NSDictionary *jsonResponse = [NSJSONSerialization JSONObjectWithData:jsonData options:NSJSONReadingMutableLeaves error:&error];
dispatch_async(dispatch_get_main_queue(),^
{
NSLog(#"jsonResponse--->%#",jsonResponse);
});
}
else
{
dispatch_async(dispatch_get_main_queue(),^
{
NSLog(#"error--->%#",error.description);
});
}
}];
And to check you JSON format is correct or not go through this link
i am using iMessage bubble to create chat view working fine
https://github.com/kerrygrover/iMessageBubble
When i call my web service in my inside method this at end
- (IBAction)sendMessage:(id)sender
here is my web method calling function which gives result out put success and send my chat to the server, but my view freeze.
NSError *errorReturned = nil;
NSString *urlString = #"https://url/methodname”;
NSURL *url = [NSURL URLWithString:urlString];
NSMutableURLRequest *request = [NSMutableURLRequest requestWithURL:url];
[request setHTTPMethod: #"POST"];
[request setValue:#"application/json" forHTTPHeaderField:#"Content-Type"];
NSMutableDictionary *dict = [NSMutableDictionary dictionary];
[dict setObject:employeeId forKey:#"employeeId"];
[dict setObject:employeename forKey:#"employeename"];
NSLog(#"dic=%#",dict);
NSData *jsonData = [NSJSONSerialization dataWithJSONObject:dict options:kNilOptions error:&errorReturned];
[request setValue:[NSString stringWithFormat:#"%lu", (unsigned long)[jsonData length]] forHTTPHeaderField:#"Content-Length"];
[request setHTTPBody: jsonData];
NSURLResponse *theResponse =[[NSURLResponse alloc]init];
NSData *data = [NSURLConnection sendSynchronousRequest:request returningResponse:&theResponse error:&errorReturned];
if (errorReturned)
{
//...handle the error
}
else
{
NSString *responseString = [[NSString alloc] initWithData:data encoding:NSUTF8StringEncoding];
NSLog(#"%#", responseString);
//...do something with the returned value
}
}
plz create a new queue not run this code on main queue . you are running the code on main queue plz use this
dispatch_queue_t myQueue = dispatch_queue_create("myQueue", NULL);
// execute a task on that queue asynchronously
dispatch_async(myQueue, ^{
NSError *errorReturned = nil;
NSString *urlString = #"https://url/methodname”;
NSURL *url = [NSURL URLWithString:urlString];
NSMutableURLRequest *request = [NSMutableURLRequest requestWithURL:url];
[request setHTTPMethod: #"POST"];
[request setValue:#"application/json" forHTTPHeaderField:#"Content-Type"];
NSMutableDictionary *dict = [NSMutableDictionary dictionary];
[dict setObject:employeeId forKey:#"employeeId"];
[dict setObject:employeename forKey:#"employeename"];
NSLog(#"dic=%#",dict);
NSData *jsonData = [NSJSONSerialization dataWithJSONObject:dict options:kNilOptions error:&errorReturned];
[request setValue:[NSString stringWithFormat:#"%lu", (unsigned long)[jsonData length]] forHTTPHeaderField:#"Content-Length"];
[request setHTTPBody: jsonData];
NSURLResponse *theResponse =[[NSURLResponse alloc]init];
NSData *data = [NSURLConnection sendSynchronousRequest:request returningResponse:&theResponse error:&errorReturned];
if (errorReturned)
{
//...handle the error
}
else
{
NSString *responseString = [[NSString alloc] initWithData:data encoding:NSUTF8StringEncoding];
NSLog(#"%#", responseString);
//...do something with the returned value
}
});
I am trying to post and JSON data to server.
My JSON is:
{
“username”:”sample”,
“password” : “password-1”
}
The way I am sending it to server is:
NSError *error;
NSString *data = [NSString stringWithFormat:#"{\"username\":\"%#\",\"password\":\"%#\"}",_textFieldUserName.text,_textFieldPasssword.text];
NSData *postData = [data dataUsingEncoding:NSASCIIStringEncoding allowLossyConversion:YES];
NSData *jsonData = [NSJSONSerialization JSONObjectWithData:postData options:0 error:&error];
NSMutableURLRequest *request = [[NSMutableURLRequest alloc] init];
[request setURL:[NSURL URLWithString:#"My URL"]];
[request setHTTPMethod:#"POST"];
[request setHTTPBody:jsonData];
NSURLResponse *requestResponse;
NSData *requestHandler = [NSURLConnection sendSynchronousRequest:request returningResponse:&requestResponse error:nil];
NSDictionary *responseDictionary = [NSJSONSerialization JSONObjectWithData:requestHandler options:0 error:&error];
NSLog(#"resposne dicionary is %#",responseDictionary);
NSString *requestReply = [[NSString alloc] initWithBytes:[requestHandler bytes] length:[requestHandler length] encoding:NSASCIIStringEncoding];
NSLog(#"requestReply: %#", requestReply);
The JsonData that is created is a valid JSON accepted by the server.
But the app is crashing and the error is:
-[__NSCFDictionary length]: unrecognized selector sent to instance 0x1702654c0
what is wrong that i am doing here?
I always use this method in my apps to perform API calls. This is the post method. It is asynchronous so you can specify a callback to be called when the server answer.
-(void)placePostRequestWithURL:(NSString *)action withData:(NSDictionary *)dataToSend withHandler:(void (^)(NSURLResponse *response, NSData *data, NSError *error))ourBlock {
NSString *urlString = [NSString stringWithFormat:#"%#", action];
NSLog(#"%#", urlString);
NSURL *url = [NSURL URLWithString:urlString];
NSMutableURLRequest *request = [NSMutableURLRequest requestWithURL:url];
NSError *error;
NSData *jsonData = [NSJSONSerialization dataWithJSONObject:dataToSend options:0 error:&error];
NSString *jsonString;
if (! jsonData) {
NSLog(#"Got an error: %#", error);
} else {
jsonString = [[NSString alloc] initWithData:jsonData encoding:NSUTF8StringEncoding];
NSData *requestData = [NSData dataWithBytes:[jsonString UTF8String] length:[jsonString lengthOfBytesUsingEncoding:NSUTF8StringEncoding]];
[request setHTTPMethod:#"POST"];
[request setValue:#"application/json" forHTTPHeaderField:#"Accept"];
[request setValue:#"application/json; charset=UTF-8" forHTTPHeaderField:#"Content-Type"];
[request setValue:[NSString stringWithFormat:#"%lu", (unsigned long)[requestData length]] forHTTPHeaderField:#"Content-Length"];
[request setHTTPBody: requestData];
[NSURLConnection sendAsynchronousRequest:request queue:[NSOperationQueue mainQueue] completionHandler:ourBlock];
}
}
You can easily call it:
- (void) login:(NSDictionary *)data
calledBy:(id)calledBy
withSuccess:(SEL)successCallback
andFailure:(SEL)failureCallback{
[self placePostRequestWithURL:#"yourActionUrl"
withData:data
withHandler:^(NSURLResponse *response, NSData *rawData, NSError *error) {
NSString *string = [[NSString alloc] initWithData:rawData
encoding:NSUTF8StringEncoding];
NSHTTPURLResponse* httpResponse = (NSHTTPURLResponse*)response;
NSInteger code = [httpResponse statusCode];
NSLog(#"%ld", (long)code);
if (!(code >= 200 && code < 300)) {
NSLog(#"ERROR (%ld): %#", (long)code, string);
[calledBy performSelector:failureCallback withObject:string];
} else {
NSLog(#"OK");
NSDictionary *result = [NSDictionary dictionaryWithObjectsAndKeys:
string, #"id",
nil];
[calledBy performSelector:successCallback withObject:result];
}
}];
}
And finally, you invocation:
NSDictionary *dataToSend = [NSDictionary dictionaryWithObjectsAndKeys:
_textFieldUserName.text, #"username",
_textFieldPasssword.text, #"password", nil];
[self login:dataToSend
calledBy:self
withSuccess:#selector(loginDidEnd:)
andFailure:#selector(loginFailure:)];
Don't forget to define your callbacks:
- (void)loginDidEnd:(id)result{
NSLog(#"loginDidEnd:");
// Do your actions
}
- (void)loginFailure:(id)result{
NSLog(#"loginFailure:");
// Do your actions
}
First you create an NSString* that is supposed to contain JSON data. This doesn't work in general if the username and password contain any unusual characters. For example, I make sure that I have a quotation mark in my password to make sure that stupid software crashes.
You turn that string into an NSData* using ASCII encoding. So if my username contains any characters that are not in the ASCII character set, what you get is nonsense.
You then use the parser to turn this into a dictionary or array, but store the result into an NSData. Chances are that the parse fails and you get nil, otherwise you get an NSDictionary* or an NSArray*, but most definitely not an NSData*.
Here's how you do it properly: You create a dictionary, and then turn it into NSData.
NSDictionary* dict = #{ #"username": _textFieldUserName.text,
#"password": _textFieldPasssword.text };
NSError* error;
NSData* data = [NSJSONSerialization dataWithJSONObject:dict options:0 error:&error];
That's it.
try this:
NSMutableURLRequest *request = [NSMutableURLRequest requestWithURL:#"My URL"];
if (!request) NSLog(#"Error creating the URL Request");
[request setHTTPMethod:#"POST"];
[request setHTTPBody:[data dataUsingEncoding:NSUTF8StringEncoding]];
[request setValue:#"text/json" forHTTPHeaderField:#"Content-Type"];
NSLog(#"will create connection");
// Send a synchronous request
NSURLResponse * response = nil;
NSError * NSURLRequestError = nil;
NSData * responseData = [NSURLConnection sendSynchronousRequest:request
returningResponse:&response
error:&NSURLRequestError];
I'm trying to send post request to an url
but the server always get empty data
NSString *post = [NSString stringWithFormat:#"cmd=login&account=%#&password=%#" ,account ,password];
NSData *data = [post dataUsingEncoding:NSASCIIStringEncoding];
NSMutableData *postData = [data mutableCopy];
NSMutableURLRequest *request = [[NSMutableURLRequest alloc] init];
[request setURL:[NSURL URLWithString:[NSString stringWithFormat:#"http://myurl.com"]]];
[request setHTTPMethod:#"POST"];
[request setHTTPBody:postData];
NSError *error = nil;
NSHTTPURLResponse* urlResponse = nil;
NSData *returnData = [NSURLConnection sendSynchronousRequest:request returningResponse:&urlResponse error:&error];
NSString *returnString = [[NSString alloc] initWithData:returnData encoding:NSASCIIStringEncoding];
NSLog(#"%#", returnString);
NSLog(#"error: %#", error.localizedFailureReason);
here is the response
2014-08-18 17:21:52.332 SignPos[2755:303] {"resp":99,"desc":"invalid cmd"}
2014-08-18 17:21:52.333 SignPos[2755:303] error: (null)
is there anything wrong?
thanks!
NSURL *url = [[NSURL alloc] initWithString:#"http://nyxmyx.com/Kinkey/KinkeyPHP/lastidretrieve.php"];
NSData *data = [url resourceDataUsingCache:YES];
NSString *string = [[NSString alloc] initWithData:data encoding:NSMacOSRomanStringEncoding];
NSLog(#"result FOR ID %#",string);
I am using this code in didenterBackgroundMethod.In that i just want to call lastidretrieve.php which returns a response as a string.I am getting error as "receiver type nsurl for instance message does not declare a method with selector resourceDataUsingCache".i have no idead about this error.
Use this code instead of your code it gives the string output ,then you have to format that string to get disired output.
NSString *post =#"";
NSURL *url=[NSURL URLWithString:#"http://nyxmyx.com/Kinkey/KinkeyPHP/lastidretrieve.php"];
NSData *postData = [post dataUsingEncoding:NSASCIIStringEncoding allowLossyConversion:YES];
NSString *postLength = [NSString stringWithFormat:#"%d", [postData length]];
NSMutableURLRequest *request = [[NSMutableURLRequest alloc] init];
[request setURL:url];
[request setHTTPMethod:#"POST"];
[request setValue:postLength forHTTPHeaderField:#"Content-Length"];
[request setHTTPBody:postData];
NSError *error = [[NSError alloc] init];
NSHTTPURLResponse *response = nil;
NSData *urlData=[NSURLConnection sendSynchronousRequest:request returningResponse:&response error:&error];
if ([response statusCode] >=200 && [response statusCode] <300)
{
//NSData *data = [responseData resourceDataUsingCache:YES];
NSString *string = [[NSString alloc] initWithData:urlData encoding:NSMacOSRomanStringEncoding];
NSLog(#"responseData-%#",string);
}
Output will be like this.
responseData-1995<br />prabu<br />1231231233<br />antab<br />8080808080<br />1360738531881.jpg<br />No
UPDATE
In case you want to add argument in your URL than change post string to this.
NSString *post =[[NSString alloc] initWithFormat:#"yourArg=%#",yourArg];
It would have been sufficient to read the documentation of NSURL. This method is deprecated. You should use [[NSData alloc] initWithContentsOfURL:url] instead.