[
{
"c_name" : "r",
"email_id" : "r",
"phn_no" : "2",
"c_id" : "1"
},
{
"c_name" : "e",
"email_id" : "e",
"phn_no" : "4",
"c_id" : "2"
}
]
This the output I received as JSON string. Now how can I access these data? I used NSJSONSerialization class:
NSError *writeError = nil;
NSData *jsonData = [NSJSONSerialization dataWithJSONObject:arr_mcontacts options:NSJSONWritingPrettyPrinted error:&writeError];
NSString *jsonString = [[NSString alloc] initWithData:jsonData encoding:NSUTF8StringEncoding];
NSLog(#"JSON Output: %#",jsonString);
I think you have an array of dictionaries. Something like this should work:
NSError *writeError;
NSError *error;
NSData *jsonData = [jsonString dataUsingEncoding:NSUTF8StringEncoding];
NSMutableArray *arrayOfDictionary = [[NSMutableArray alloc] init];
arrayOfDictionary = [NSJSONSerialization JSONObjectWithData:jsonData options:NSJSONReadingMutableContainers error:nil];
NSDictionary *dictionary = [myArray objectAtIndex:0];
NSString *valueString= [dictionary objectForKey: #"c_name"];
For accessing data you use a dictionary instead of string. The code below shows
NSDictionary *responseDict=[NSJSONSerialization JSONObjectWithData: jsonData options:NSJSONReadingMutableContainers error:&error]; for(NSArray *a in responseDict)
{[cnamearray addobject [a valueforKey:#"c_name"]];
}NSLog(#"The cnamearray contains:", cnamearray);
The output will be The cnamearray contains: { r,e}
Related
I need to convert NSString to NSArray. if, few objects contains double quotes, few objects are doesn't contain anything.
NSString *string = #"["Line", "Operations(UK)", "Operations(USA)", "Total of Invoice", "", "Star", "10040101", "31.Jan.2001", "31.Jan.2001", "", "USD", "1653", "28,145.00", 163.48, "Stock, Ms.Pat", "MGR", "14.Nov.2006", "01-000-2210-0000-000", "V1- New York City", 20343, 5]";
NSData *data = [string dataUsingEncoding:NSUTF8StringEncoding];
NSError *error = nil;
NSArray *array = [NSJSONSerialization JSONObjectWithData:data options:nil error:&e];
I have tried to convert using replacing characters like [, ", ] and did "componentsSeparatedByString:" with comma. but its not working properly.
As i see, you are doing right way to convert from NSString to NSArray. When you declare a NSString, you have to use \" instead of ". It works with me.
NSString *string = #"[\"Line\", \"Operations(UK)\", \"Operations(USA)\", \"Total of Invoice\", \"\", \"Star\", \"10040101\", \"31.Jan.2001\", \"31.Jan.2001\", \"\", \"USD\", \"1653\", \"28,145.00\", 163.48, \"Stock, Ms.Pat\", \"MGR\", \"14.Nov.2006\", \"01-000-2210-0000-000\", \"V1- New York City\", 20343, 5]";
NSData *data = [string dataUsingEncoding:NSUTF8StringEncoding];
NSError *error = nil;
NSArray *array = [NSJSONSerialization JSONObjectWithData:data options:nil error:&error];
I will give you solution with example.I tried this.I got the solution.
NSString *strJson=#"{\"name\":{\"dob\":88,\"age\":61},\"family\" : [{\"location\":\"us\",\"mobile\":\"mobile\"}]}";
NSData *data = [strJson dataUsingEncoding:NSUTF8StringEncoding];
NSDictionary *dict = [NSJSONSerialization JSONObjectWithData:data options:0 error:nil];
NSLog(#"%#",dict);
The output result is
Im having hard time while trying to parse the following json array. How to parse it. The other answers in web doesn't seem to solve my problem.
{
"status": 1,
"value": {
"details": [
{
"shipment_ref_no": "32",
"point_of_contact": {
"empid": ""
},
"products": {
"0": " Pizza"
},"status": "2"
},
{
"shipment_ref_no": "VAPL/EXP/46/14-15",
"point_of_contact": {
"empid": "60162000009888"
},
"products": {
"0": "MAIZE/CORN STARCH"
},
"status": "5"
}
]
}
}
I have to access the values of each of those keys.
Following is my code
NSString* pendingResponse = [[NSString alloc] initWithData:data encoding:NSUTF8StringEncoding];
NSData *jsonData = [pendingResponse dataUsingEncoding:NSUTF8StringEncoding];
NSDictionary *jsonDic = [NSJSONSerialization JSONObjectWithData:jsonData options:NSJSONReadingAllowFragments error:nil];
NSArray *argsArray = [[NSArray alloc] initWithArray:[jsonDic objectForKey:#"details"]];
NSDictionary *argsDict = [[NSDictionary alloc] initWithDictionary:[argsArray objectAtIndex:0]];
NSLog(#"keys = %#", jsonDic[#"values"]);
This is how you can parse your whole dictionary:
NSDictionary *dataDictionary = [NSJSONSerialization JSONObjectWithData:data options:0 error:nil];
NSArray *details = [[dataDictionary objectForKey:#"value"] objectForKey:#"details"];
for (NSDictionary *dic in details) {
NSString *shipmentRefNo = dic[#"shipment_ref_no"];
NSDictionary *pointOfContact = dic[#"point_of_contact"];
NSString *empId = pointOfContact[#"empid"];
NSDictionary *products = dic[#"products"];
NSString *zero = products[#"0"];
NSString *status = dic[#"status"];
}
NSString *pendingResponse = [[NSString alloc] initWithData:data encoding:NSUTF8StringEncoding];
NSData *jsonData = [pendingResponse dataUsingEncoding:NSUTF8StringEncoding];
NSDictionary *jsonDic = [NSJSONSerialization JSONObjectWithData:jsonData options:NSJSONReadingAllowFragments error:nil];
NSArray *argsArray = [[NSArray alloc] initWithArray:[jsonDic objectForKey:#"details"]];
//argsArray holds objects in form of NSDictionary.
for(NSDictionary *response in argsArray) {
//String object
NSLog(#"%#", [response valueForKey:#"shipment_ref_no"]);
//Dictionary object
NSLog(#"%#", [[response objectForKey:#"point_of_contact"] valueForKey:#"empid"]);
//String object
NSLog(#"%#", [response valueForKey:#"status"]);
//Dictionary object
NSLog(#"%#", [[response objectForKey:#"products"] valueForKey:#"0"]);
}
I believe you should surely ask your server developer to update the response format.
Also, you can always use Model classes to parse your data. Please check this, How to convert NSDictionary to custom object.
And yes, I'm using this site to check my json response.
EDIT: Following answer is in javascript!
You can parse your json data with:
var array = JSON.parse(data);
and then you can get everything like this:
var refno = array["value"]["details"][0]["shipment_ref_no"];
you can parse like ...
NSDictionary *jsonDic = [NSJSONSerialization JSONObjectWithData:jsonData options:NSJSONReadingAllowFragments error:nil];
NSDictionary *dictValue = [[NSDictionary alloc] initWithDictionary:[jsonDic objectForKey:#"value"]];
NSArray *arrDetails = [[NSArray alloc] initWithArray:[dictValue objectForKey:#"details"]];
for (int i=0; i<arrDetails.count; i++)
{
NSDictionary *dictDetails=[arrDetails objectAtIndex:i];
NSDictionary *dictContact = [[NSDictionary alloc] initWithDictionary:[dictDetails objectForKey:#"point_of_contact"]];
NSDictionary *dictProduct = [[NSDictionary alloc] initWithDictionary:[dictDetails objectForKey:#"products"]];
}
NSDictionary *response = //Your json
NSArray *details = response[#"value"][#"details"]
etc. Pretty easy
Update your code as follows. You are trying to read the details array from the top level whereas in your data its inside the value key. So you should read the value dict and within that read the details array.
NSString* pendingResponse = [[NSString alloc] initWithData:data encoding:NSUTF8StringEncoding];
NSData *jsonData = [pendingResponse dataUsingEncoding:NSUTF8StringEncoding];
NSDictionary *jsonDic = [NSJSONSerialization JSONObjectWithData:jsonData options:NSJSONReadingAllowFragments error:nil];
NSDictionary *valueDict = [jsonDic objectForKey:#"value"];
NSArray *argsArray = [[NSArray alloc] initWithArray:[valueDict objectForKey:#"details"]];
NSDictionary *argsDict = [[NSDictionary alloc] initWithDictionary:[argsArray objectAtIndex:0]];
NSLog(#"keys = %#", jsonDic[#"values"]);
I think your problem is that you have:
NSLog(#"keys = %#", jsonDic[#"values"]);
But it should be:
NSLog(#"keys = %#", jsonDic[#"value"]);
Below is code for parsing JSON array. i have used to parse JSON array from file but you can also do this using response link also.I have provided code for both and are below.
// using file
NSString *str = [[NSBundle mainBundle] pathForResource:#"test" ofType:#"json"];
NSData *data = [[NSData alloc]initWithContentsOfFile:str];
NSMutableDictionary *dict = [NSJSONSerialization JSONObjectWithData:data options:NSJSONReadingMutableContainers error:nil];
NSMutableDictionary *dictValues = [[NSMutableDictionary alloc]initWithDictionary:[dict valueForKey:#"value"]];
NSMutableArray *array = [[NSMutableArray alloc]initWithArray:[dictValues valueForKey:#"details"] copyItems:YES];
NSLog(#"Array Details :- %#",array);
// using url
NSURL *url = [NSURL URLWithString:#"www.xyz.com"]; // your url
NSData *data = [[NSData alloc]initWithContentsOfURL:url];
NSMutableDictionary *dict = [NSJSONSerialization JSONObjectWithData:data options:NSJSONReadingMutableContainers error:nil];
NSMutableDictionary *dictValues = [[NSMutableDictionary alloc]initWithDictionary:[dict valueForKey:#"value"]];
NSMutableArray *array = [[NSMutableArray alloc]initWithArray:[dictValues valueForKey:#"details"] copyItems:YES];
NSLog(#"Array Details :- %#",array);
How to convert string to JSON object or JSON array in iOS?
my JSON string Like That.
{"Data": [{"ID":"1","Name":"Raj"},{"ID":"2","Name":"Rajneesh"}]}
I want to get ID or Name from this string please help me if anyone now this.
Thank You.
I try below code but print null
NSString *JsonString=#"{"Data": [{"ID":"1","Name":"Raj"},{"ID":"2","Name":"Rajneesh"}]}";
NSData *objectData = [JsonString dataUsingEncoding:NSUTF8StringEncoding];
NSDictionary *json = [NSJSONSerialization JSONObjectWithData:objectData options:0 error:&error];
NSArray* array = [json objectForKey:#"Data"];
NSLog(#"Print Array %#",array);
Use this
NSString *str=#"{\"Data\": [{\"ID\":\"1\",\"Name\":\"Raj\"},{\"ID\":\"2\",\"Name\":\"Rajneesh\"}]}";
NSMutableDictionary *dict=[NSJSONSerialization JSONObjectWithData:[str dataUsingEncoding:NSUTF8StringEncoding] options:kNilOptions error:nil];
NSMutableArray *dataArr=[dict valueForKey:#"Data"];
for (NSDictionary *userData in dataArr) {
NSLog(#"Id:%# Name:%#",[userData valueForKey:#"ID"],[userData valueForKey:#"Name"]);
}
Always Remember that when there are { } curly brackets, it means it is Dictionary and when [ ] this, means Array
NSURL *url=[NSURL URLWithString:#"Your JSON URL"];
NSData *data = [[NSData alloc] initWithContentsOfURL:url];
NSMutableDictionary *json = [NSJSONSerialization JSONObjectWithData:data options:kNilOptions error:nil];
NSArray *array = json[#"Data"];
for(NSMutableDictionary *dic in array)
{
NSLog(#"%#",dic[#"ID"]); // give 1 & 2
NSLog(#"%#",dic[#"Name"]); // Raj and Rajneesh
}
This is not the correct JSON string which can be parsed by Objective c, get string from encoder and you will get a valid string, other then that for JSON to Dictionary conversion is simple in iOS as its natively supported.
NSData *data = [strJSON dataUsingEncoding:NSUTF8StringEncoding];
NSDictionary *jsonResponse = [NSJSONSerialization JSONObjectWithData:data
options:kNilOptions
error:&error];
Problem: I can't parse data from a JSON file to a NSArray appropriately. UTF encoding is not working as expected.
My JSON looks something like:
[
{"Name":"Marcos","Address":"1234 Brasil Av. São Paulo - SP","Latitude":"-23.000","Longitude":"-46.70"},{"Name":"Mario","Address":"1000 Washignton Luiz Av. Itú SP","Latitude":"-20.0000","Longitude":"-46.000"}
]
My Objective-C code is:
NSError *error = nil;
NSURL *jsonUrl = [[NSURL alloc]initWithString:
#"http://marcosdegni.com.br/teste/webservice_teste.php"];
NSString *jsonString = [NSString stringWithContentsOfURL:jsonUrl
encoding:NSUTF8StringEncoding error:&error];
NSLog(#"jsonString: %# , Error:%#:" ,jsonString, error); //(1)
if (!error) {
NSError *error2 = nil;
NSData *jsonData = [jsonString dataUsingEncoding:NSUTF8StringEncoding];
NSArray * jsonArray = [NSJSONSerialization JSONObjectWithData:jsonData options:kNilOptions error:&error2];
NSLog(#"\n\nArray: %#" \nError:$#, jsonArray, error2); //(2)
//(*1*) This log show the content's as they are expected: note the characters ã and ú on the address fields.
//(*2*) The logs from the array and the dictionary show this charters as it's UNIX codes:\U00e and \U00fa respectively.
You can give this a try. The id json you get will be a NSArray, you can use it from there.
NSData *data = [jsonString dataUsingEncoding:NSUTF8StringEncoding];
id json = [NSJSONSerialization JSONObjectWithData:data options:0 error:nil];
NSArray * array = json;
for (NSDictionary *dict in array) {
NSString *string = [dict objectForKey:#"Address"];
NSLog(#"%#",string);
}
From here, and I get the right result if I obtain the value of the key and log it, instead of logging the NSArray directly.
I'm a newbie about development of iOS.
And when I deal a json with NSJSONSerialization , I find something really a problem to me.
NSLog(#"response: %#", responseString);
NSData *jsonData = [responseString dataUsingEncoding:NSUTF8StringEncoding];
NSDictionary *dict = [NSJSONSerialization JSONObjectWithData:jsonData options:NSJSONReadingMutableContainers error:nil];
NSLog(#"dict: %#", dict);
and the output is:
2013-03-18 20:13:56.228 XXXX[3550:5003] response: {"status":"success","data":"{\"title\":\"\",\"sessionName\":\"sid\",\"sessionID\":\"9217e5df3db6b4b4aa3eed800890069f\",\"rand\":5360}","md5":"292ee1e78628fc6360c647e938c4f1ea"}
2013-03-18 20:13:56.229 XXXX[3550:5003] dict: {
data = "{\"title\":\"\",\"sessionName\":\"sid\",\"sessionID\":\"9217e5df3db6b4b4aa3eed800890069f\",\"rand\":5360}";
md5 = 292ee1e78628fc6360c647e938c4f1ea;
status = success;
with the "\" the data section cannot be a NSDictionary object
So what should I do to make it right?
Sorry for my poor English.
For whatever reason, the value of "data" is not a JSON dictionary, but a string containing JSON data. You can fix this by applying JSONObjectWithData to this string again and replacing the value in the dictionary:
NSData *jsonData = [responseString dataUsingEncoding:NSUTF8StringEncoding];
NSMutableDictionary *dict = [NSJSONSerialization JSONObjectWithData:jsonData options:NSJSONReadingMutableContainers error:nil];
NSData *nestedJsonData = [[dict objectForKey:#"data"] dataUsingEncoding:NSUTF8StringEncoding];
NSDictionary *nestedDict = [NSJSONSerialization JSONObjectWithData:nestedJsonData options:NSJSONReadingMutableContainers error:nil];
[dict setObject:nestedDict forKey:#"data"];
NSLog(#"dict: %#", dict);
Output:
dict: {
data = {
rand = 5360;
sessionID = 9217e5df3db6b4b4aa3eed800890069f;
sessionName = sid;
title = "";
};
md5 = 292ee1e78628fc6360c647e938c4f1ea;
status = success;
}