Server returns json object shown as below: its around 51 objects
[{"location":"Location1","email":"sriharsha#yahoo.com","phone":"123456"},{"location":"Location2","email":"sriharsha.mandya#gmail.com","phone":"123456789"},
.
.
..
..
..51]
I want to assign this value first tableview to locations and detailview with email and phone number...
code I used is below:
- (void)connectionDidFinishLoading:(NSURLConnection *)connection {
[connection release];
NSString *responseString = [[NSString alloc] initWithData:responseData encoding:NSUTF8StringEncoding];
[responseData release];
NSDictionary *dictionary = [responseString JSONValue];
NSArray *response = [dictionary objectForKey:#"location"];
exercises = [[NSArray alloc] initWithArray:response];
[table reloadData];
}
where am I wrong please suggest...
From first glance the response string looks like an array of dictionaries
to access the the data try something like
NSArray* arrayOfDictionaries = [responseString JSONValue];
NSDictionary* firstDictionary = [arrayOfDictionaries objectAtIndex:0];
Related
I have a String that I got from a webserver which came in json format, but the string is huge with everything in it. I tried using the NSDICTIONARY but to no success. I was wondering what would be the best approach to break this string and add to different strings and eventually put it all in a class of strings. Thanks for the help! Here is my code:
NSMutableURLRequest *request = [[NSMutableURLRequest alloc]init];
[request setURL:[NSURL URLWithString:#"http://mym2webdesign.com/meiplay/paulsuckedabuffalo/artists.php"]];
NSData *returnData = [NSURLConnection sendSynchronousRequest:request returningResponse:nil error:nil]; //Or async request
returnString = [[NSString alloc] initWithData:returnData encoding:NSUTF8StringEncoding];
NSError *error=nil;
NSLog(#"HHHHHHHHHHHHHH"); //use this to know how far Im getting
NSLog(returnString); // Look at the console and you can see what the restults are
/*NSDictionary *results = [returnString JSONValue];
NSString *ID = [results objectForKey:#"ID"]; // for example
NSLog(#"ID Number: %#", ID);*/
Here is some of the log i get:
[{"ID":"1","name":"kevin","bio":"kevins bio"},{"ID":"1","name":"kevin","age":"20"},{"ID":"2","name":"Cesar","bio":"Cesar bio"},{"ID":"2","name":"Cesar","age":"19"},{"ID":"3", "name":"Katherine", "bio":"Katherines bio"},{"ID":"3", "name":"Katherine", "age":"22"}]
You are doing it wrong. Its a NSArray of NSDictionaries. So first you need to assign it to NSArray and then loop over it to get each individual NSDictionary. See below.
NSArray *results = [returnString JSONValue];
for(NSDictionary *record in results)
{
NSLog(#"ID: %#", [record objectForKey:#"ID"]);
}
You'll probably be better off just using NSJSONSerialization if your app is targeted for at or over iOS 5.0:
NSArray *JSONArray = [NSJSONSerialization JSONObjectWithData:returnData options:0 error:&error];
You might need to experiment with using NSArray vs. NSDictionary, etc., but this should be an overall simpler solution.
Try this :
NSArray *results = [returnString JSONValue];
for (int i=0; i<[results count];i++) {
NSDictionary *DetailDictonary=[results objectAtIndex:i];
NSString *strid=[DetailDictonary objectForKey:#"ID"];
NSString *strName=[DetailDictonary objectForKey:#"name"];
NSString *strBio=[DetailDictonary objectForKey:#"bio"];
// Or You can set it in Your ClassFile
MyClass *classObj=[[MyClass alloc] init];
classObj.strid=[DetailDictonary objectForKey:#"ID"];
classObj.strName=[DetailDictonary objectForKey:#"name"];
classObj.strBio=[DetailDictonary objectForKey:#"bio"];
[YourMainArray addObject:classObj]; //set YourClass to Array
[classObj release];
}
I had searched for complete googling. but found no answer for it.
I have the problem in parsing the array of objects from the json result .
I have json result like this:
[{"created_at":"Sat Apr 28 13:36:24 +0000 2012",
"text":"#LisaPrejean Love your work! Very well done!",
"source":"web","user":{"id":478983313,"name":"3rd Dimension Media",
"created_at":"Mon Jan 30 21:51:20 +0000 2012","favourites_count":0},
"retweet_count":0}]
& from result i want etract only "created_at" & "text"
(void)connectionDidFinishLoading:(NSURLConnection *)connection
{
NSString *jsonString = [[NSString alloc] initWithData:jsonData encoding:NSUTF8StringEncoding];
NSLog(#"%#", jsonString);
self.jsonData = nil;
NSArray *tweetArray = [jsonString JSONValue];
tweetTextArray = [NSMutableArray array];
for (NSDictionary *tweet in tweetArray)
{
[tweetTextArray addObject:[tweet objectForKey:#"text"]];
[tweetCreated_atArray addObject:[tweet objectForKey:#"created_at"]];
}
}
but getting EXC_bad_access error on line:
NSArray *tweetArray = [jsonString JSONValue];
Try this
NSString *responseString = [[NSString alloc] initWithData:jsonData encoding:NSUTF8StringEncoding];
SBJSON *parser = [[SBJSON alloc] init];
NSDictionary *data = (NSDictionary *) [parser objectWithString:responseString error:nil];
NSString *text = (NSString *) [data objectForKey:#"text"];
NSLog(#"textvalue= %#",text);
NSString * created_at = (NSString *) [data objectForKey:#"created_at"];
NSLog(#"created_at= %#",created_at);
i am using the below json method and following code to parse json method and display the data which i need on a label.
i followed this link http://www.touch-code-magazine.com/tutorial-fetch-and-parse-json/ and many other but i am not getting the result what i need.Either it throws exception in below code line or else it displays null value.
NSDictionary* profile = [profileinfo objectAtIndex:0]; //throws exception
can anyone help me what is wrong in the below code and what is missing so tat i get the values i.e, phonenumber,firstname and other data from json method.
//Json Method
{
"createdBy":"superadmin",
"createdOn":"2011-11-15T00:49:06+05:30",
"updatedBy":"superadmin",
"updatedOn":"2011-11-15T00:49:06+05:30",
"contactNumber":"9945614074",
"emailNotification":"true",
"firstName":"resident2",
"lastName":"user5",
"loginId":"jin",
"married":"false",
"message":"",
"preferredLanguage":"ko_KR",
"sex":"0",
"smsNotification":"false",
"status":"ACTIVE",
"subscribedPlans":"Intelligent Concierge",
"userName":"Cisco"
}
//code
- (void)loadData
{
dataWebService = [[NSMutableData data] retain];
NSURLRequest *request = [[NSURLRequest requestWithURL:[NSURL URLWithString:#"URL LINK"]]retain];
[[NSURLConnection alloc]initWithRequest:request delegate:self];
}
-(void)connectionDidFinishLoading:(NSURLConnection *)connection
{
[connection release];
NSString *responseString = [[NSString alloc] initWithData:dataWebService encoding:NSUTF8StringEncoding];
self.dataWebService = nil;
NSArray* profileinfo = [(NSDictionary*) [responseString JSONValue] objectForKey:#"createdBy"];
[responseString release];
NSDictionary* profile = [profileinfo objectAtIndex:0];
//fetch the data
NSNumber* numb = [profile objectForKey:#"contactNumber"];
NSString* name = [profile objectForKey:#"firstName"];
//set the text to the label
label.numberOfLines = 0;
label.text = [NSString stringWithFormat:#"contactNumber: %# \n \n Name: %# \n \n",
numb,name];
}
The jsonValue is your dictionary.
replace
NSArray* profileinfo = [(NSDictionary*) [responseString JSONValue] objectForKey:#"createdBy"];
and
NSDictionary* profile = [profileinfo objectAtIndex:0];
with
NSDictionary * profile = (NSDictionary*)[responseString JSONValue];
and now use objectForKey to get your values
I'm developing an iphone app and I have a JSON from web service as below:
[
{
"0":"test_w",
"assignment_title":"test_w",
"1":"2011-11-02 04:02:00",
"assignment_publishing_datetime":"2011-11-02 04:02:00",
"2":"2011-11-02 01:53:00",
"assignment_due_datetime":"2011-11-02 01:53:00",
"3":"course_math.png",
"course_icon":"course_math.png",
"4":null,
"submission_id":null
},
{
"0":"\u062a\u0637\u0628\u064a\u0642 \u0631\u0642\u0645 3",
"assignment_title":"\u062a\u0637\u0628\u064a\u0642 \u0631\u0642\u0645 3",
"1":"2011-08-08 00:00:00",
"assignment_publishing_datetime":"2011-08-08 00:00:00",
"2":"2011-08-25 00:00:00",
"assignment_due_datetime":"2011-08-25 00:00:00",
"3":"course_math.png",
"course_icon":"course_math.png",
"4":null,
"submission_id":null
}
]
also I have a tableview and I need to parser assignment_title only on the tableview cells , also I'm using SBJSON library.
so what is the best way to extract assignment_title and put them on cells?
I find the solution from your answers as below:
I created a method with 2 parameters (json_path , field [that i need to show in tableview cell])
- (NSMutableArray*)JSONPath:(NSString *)path JSONField:(NSString *)field{
SBJSON *parser = [[SBJSON alloc] init];
NSURLRequest *request = [NSURLRequest requestWithURL:[NSURL URLWithString:path]];
// Perform request and get JSON back as a NSData object
NSData *response = [NSURLConnection sendSynchronousRequest:request returningResponse:nil error:nil];
// Get JSON as a NSString from NSData response
NSString *json_string = [[NSString alloc] initWithData:response encoding:NSUTF8StringEncoding];
NSArray *statuses = [parser objectWithString:json_string error:nil];
NSMutableArray * tempMutArray = [[[NSMutableArray alloc] init] autorelease];
int i;
for (i=0; i<[statuses count]; i++) {
[tempMutArray addObject:[[statuses objectAtIndex:i] objectForKey:field]];
}
return [tempMutArray copy];
}
after that i call it in cell as following:
//in viewDidLoad
NSArray * homework = [self JSONPath:#"http://....." JSONField:#"assignment_title"];
//In cellForRowAtIndexPath
cell.textLabel.text = [homework objectAtIndex:indexPath.row];
Thanks to all
If you are doing it through NSJSONSerialization you can get array of assignment_title using this simple method ;)
NSError *error = nil;
NSData *jsonData = [NSData dataWithContentsOfURL:apiURL];
id jsonObjectFound = [NSJSONSerialization JSONObjectWithData:jsonData options:NSJSONReadingMutableContainers error:&error];
NSArray* assignmentTitles = [jsonObjectFound valueForKey:#"assignment_title"];
If performance matters, you might consider using an ASIHTTPRequest to fetch the json asynchronously, then inside the requestFinished: you might do something like:
- (void)requestFinished:(ASIHTTPRequest *)request
{
// Use when fetching text data
NSString *responseString = [request responseString];
//assuming you created a property instance variable NSArray *myArrAssignmentTitles
NSArray *tempArray = [responseString JSONValue];
//making an array of assignment_title
NSMutableArray *tempMutArray = [[NSMutableArray alloc] init];
int i;
for(i = 0;i < [tempArray count];i++){
[tempMutArray addObject:[[tempArray objectAtIndex:i] objectForKey:#"assignment_title"]];
}
//assign the data to the instance variable NSArray *myArrAssignmentTitles
self.myArrAssignmentTitles = tempMutArray;
//release tempMutArray since the instance variable has it
[tempMutArray release];
//call the reload table
[self.tableView reloadData];//i think this is how to reload the table
}
- (void)requestFailed:(ASIHTTPRequest *)request
{
NSError *error = [request error];
}
So, your myArrAssignmentTitles has all the values assignment_title from json
all you do is just apply the array data for the cell e.g.
cell.textLabel.text = [self.myArrAssignmentTitles objectAtIndex:indexPath.row];
its a long code sorry about that. But, thats works for me xD; it fetches the json asynchronously after that it creates an array of assignment_title hopes it helps.
i have the following json value in console:
{"TokenID":"kuiHigen21","isError":false,"ErrorMessage":"","Result":[{"UserId":"153","FirstName":"Rocky","LastName":"Yadav","Email":"rocky#itg.com","ProfileImage":null,"ThumbnailImage":null,"DeviceInfoId":"12"}],"ErrorCode":900}
this is my server api :#"http://192.168.0.68:91/JourneyMapperAPI?RequestType=Login"
//api takes 5 parameters .
when i post data to server api values are posted to server and i get the above response in json format.
i want to parse the above the JSON value that i get in the response and save in sqlite database.
i am doing this code to parse the above JSON value:
-(void)connectionDidFinishLoadingNSURLConnection *)connection
{
NSString *loginStatus = [[NSString alloc] initWithBytes: [webData mutableBytes] lengthwebData length] encoding:NSUTF8StringEncoding];
NSLog(#"%#",loginStatus);
self.webData = nil;
SBJSON *parser =[[SBJSON alloc]init];
NSURLRequest *request = [NSURLRequest requestWithURLNSURL URLWithString"http://192.168.0.68:91/JourneyMapperAPI?RequestType=Login.json"]];
NSData *response = [NSURLConnection sendSynchronousRequest:request returningResponse:nil error:nil];
// Get JSON as a NSString from NSData response
NSString *json_string = [[NSString alloc] initWithData:response encoding:NSUTF8StringEncoding];
//NSDictionary *object = [parser objectWithString:json_string error:nil];
// parse the JSON response into an object
// Here we're using NSArray since we're parsing an array of JSON status objects
NSArray *statuses = [parser objectWithString:json_string error:nil];
for (NSDictionary *status in statuses)
{
// You can retrieve individual values using objectForKey on the status NSDictionary
// This will print the tweet and username to the console
NSLog(#"%# - %#", [status objectForKey"Login"],[status objectForKey"LoginKey"]);
[connection release]; [webData release];
}
You should check out some of the JSON parsers, my personal favourite is json-framework. After you've included one of them in your project, where you've got your JSON response from your server:
// Get JSON as a NSString from NSData response
NSString *json_string = [[NSString alloc] initWithData:response encoding:NSUTF8StringEncoding];
NSDictionary *result = [json_string JSONValue];
NSArray *statuses = [result objectForKey:#"Result"];
which will return your array of results (where each object in the array is an NSDictionary).
You can save this to a database with the help of a model class, Result
NSString *json_string = [[NSString alloc] initWithData:response encoding:NSUTF8StringEncoding];
NSDictionary *result = [json_string JSONValue];
NSArray *values = [result objectForKey:#"Result"];
NSMutableArray *results = [[NSMutableArray alloc] init];
for (int index = 0; index<[values count]; index++) {
NSMutableDictionary * value = [values objectAtIndex:index];
Result * result = [[Result alloc] init];
result.UserId = [value objectForKey:#"UserId"];
result. FirstName = [value objectForKey:#"FirstName"];
...
[results addObject:result];
[result release];
}
use the array of results to save it to the database.
for (int index = 0; index<[results count]; index++) {
Result * result = [results objectAtIndex:index];
//save the object variables to database here
}