I am working on API integration, From API I am getting the response in dictionary format, While I serialise that data, it is sorting automatically
Here is my code
id resposeJSon = [NSJSONSerialization JSONObjectWithData:data options:0 error:&err];
While I try to print the same in NSString it works as the response is received
NSString *jsonString = [[NSString alloc] initWithData:adata encoding:NSUTF8StringEncoding];
I am expecting the serialised variable resposeJSon should be in the same format what I get from variable jsonString
Thanks in advance
Related
Unable to parse json string
I have got the following hard coded json. I tried converting it to dictionary and parse it but Im unable to do so.
NSString *hcResponse = #"{\"status\":1,\"value\":\"Successfully Login\"}";
How to parse such a json into key value pairs?
Finally, I've figured it by myself
//convert the string to nsdata
NSData *jsonData = [hcResponse dataUsingEncoding:NSUTF8StringEncoding];
NSError *error;
//convert the data to json dictionary
NSDictionary *jsonDic = [NSJSONSerialization JSONObjectWithData:jsonData options:NSJSONReadingAllowFragments error:nil];
my app get data from a php web service and return a NSString
["first name","last name","adress","test#test","000-000-0000","password","code","0"]
How can i get the second element ?
This is a JSON formatted string which you are getting from your web service.
You must be getting bytes from server. Just replace your variable which have bytes stored with my variable "response data".
Code:
NSError* error;
NSArray* myResultArray = [NSJSONSerialization
JSONObjectWithData:responseData options:kNilOptions error:&error];
You will get an array in variable "myResultArray" and you can get all value by index.
Code:
NSString* first name = [myResultArray objectAtIndex:0];
What you have given here is an array and not a string. May be you could provide more details like the exact response and the code that you are trying here.
To Convert a JSON string to NSDictionary all you need to do is:
NSError *jsonError;
NSData *objectData = [jsonString dataUsingEncoding:NSUTF8StringEncoding];
NSDictionary *json = [NSJSONSerialization JSONObjectWithData:objectData
options:nil
error:&jsonError];
And to NSArray :
NSArray *array = [NSJSONSerialization JSONObjectWithData:objectData options:nil error:&jsonError];
NSString *secondElement = array[1];
That web service doesn't return an NSString. It runs data in some format defined by the service, and you convert it to an NSString. Find out what the format actually is, then convert it appropriately, for example using NSJSONSerialization.
The example string your showed here seems wired. This looks more like a array than string. If this is a NSArray then you can do it like this:
NSArray *data = #[#"first name",#"last name", #"adress", #"test#test", #"000-000-0000", #"password", #"code", #"0"];
NSLog (#"Second component = %#", data[1]);
However, if you anticipate this as NSString then this is how you would handle this:
NSString *test = #"[\"first name\",\"last name\",\"adress\",\"test#test\",\"000-000-0000\",\"password\",\"code\",\"0\"]";
NSLog (#"Second component = %#", [test componentsSeparatedByString:#","][1]);
I upload the json string to the server like
NSDictionary *values = [[NSDictionary alloc]initWithObjectsAndKeys:#"name", #"objective", nil];
NSArray *array = [[NSArray alloc]initWithObjects:values,nil];
NSDictionary *result = [[NSDictionary alloc]initWithObjectsAndKeys:array, #"objectives", nil];
I use the following code to convert the dictionary to JSON:
id obj = result;
NSError *error;
NSData *jsonData = [NSJSONSerialization dataWithJSONObject:obj options:kNilOptions error:&error];
NSString *jsonString = [[NSString alloc] initWithData:jsonData encoding:NSUTF8StringEncoding];
I get correct json like
{ "objectives":[
{"objective":"name"}
]
}
This is correct json but I need json string like
{ objectives:[
{"objective":"name"}]
}
Is it possible to create without double quotes in key in iOS?
Only this json string we get the response otherwise I get error.
if it is only the first key that you want to remove quotes from, you can use the following quick workaround
jsonString = [jsonString stringByReplacingOccurrencesOfString:#"\"objectives\"" withString:#"objectives"]];
I am trying to publish to SNS using the SNSPublishRequest but I can't figure out how to format the JSON to actually use the parameters set for the aps dictionary. If I put in something for the "default" it will send that message. But if I add the APNS dictionary as well, it seems to not show anything. This is how I am formatting the JSON request - am I missing something?
NSDictionary *parameters = #{#"default" : #"",
#"APNS" : #{#"aps": #{#"alert": #"hello"}}};
NSError *error;
NSData *jsonData = [NSJSONSerialization dataWithJSONObject:parameters
options:0
error:&error];
NSString *JSONString = [[NSString alloc] initWithBytes:[jsonData bytes] length:[jsonData length] encoding:NSUTF8StringEncoding];
NSLog(#"JSON OUTPUT: %#",JSONString);
SNSPublishRequest *pr = [[SNSPublishRequest alloc] initWithTopicArn:#"someTopic" andMessage:JSONString];
pr.messageStructure = #"json";
I think SNS's APNs dictionary expects an JSON encoded string format itself. We have to escape all the " and add the \s
NSString* JSONString = #"{\"default\": \"<enter your message here>\",\"APNS_SANDBOX\":\"{\\\"aps\\\":{\\\"alert\\\":\\\"<HELLO>\\\"}}\"}";
quite new to iOS development and objective-c at the same time. I have the following method:
-(NSMutableArray *)fetchDatabaseJSON{
NSURL *url = [NSURL URLWithString:#"http://www.ios.com/ios/responseScript.php"];
NSError *error = nil;
NSURLRequest *request = [NSURLRequest requestWithURL:url];
NSData *data = [NSURLConnection sendSynchronousRequest:request returningResponse:NULL error:&error];
//jsonArray = [NSJSONSerialization JSONObjectWithData:data options:0 error:&error];
//NSLog(#"Array: %#",[jsonArray objectAtIndex:0]);
jsonDictionary = [NSJSONSerialization JSONObjectWithData:data options:0 error:&error];
NSLog(#"Dictionary: %#", jsonDictionary);
return jsonArray;
}
Now the NSLog shows this:
2013-02-03 19:15:37.081 TestConnection[24510:c07] Dictionary: (
Bannana,
Apple,
SomeCheese )
From what I understand that whatever is inside the dictionary doesn't have key-value. How can this be? and how can I fix it? I want to be able to have keys to ease operations on dictionary.
Regards,
JSONObjectWithData may return an NSArray or NSDictionary, depending on the JSON data you give it. If your JSON string is an array, you will have an NSArray. If your JSON data is a dictionary, you will get an NSDictionary.
Convert your JSON data (your data variable) to string and print it out with NSLog. To convert NSData to NSString, use something like:
NSString *myString = [[NSString alloc] initWithData:myData encoding:NSUTF8StringEncoding];
If you print it out and see a JSON array, you simply don't have a dictionary there.. If you can alter the server-code that generates the JSON, you may be able to change that.
One more thing I noticed, you assume that the returning container is mutable. If I'm not mistaken, you need to use an option like NSJSONReadingMutableContainers in the options parameter of JSONObjectWithData to get that.
One last tip, if you want to check in code if you have an NSArray (or NSDictionary), use something like:
if ([obj isKindOfClass:[NSArray class]]) {...}