NSString *jsonString = #"{\"eventData\":{\"eventDate\":\"Jun 13, 2012 12:00:00 AM\",\"eventLocation\":{\"latitude\":43.93838383,\"longitude\":-3.46},\"text\":\"hkhkjh\",\"imageData\":\"\",\"imageFormat\":\"JPEG\",\"expirationTime\":1339538400000},\"type\":\"Culture\",\"title\":\"accIDENTE\"}";
NSData *jsonData1 = [jsonString dataUsingEncoding:NSUTF8StringEncoding];
NSDictionary *finalDictionary1 = [NSJSONSerialization JSONObjectWithData:jsonData1 options:NSJSONReadingAllowFragments error:nil];
NSLog(#"%#", finalDictionary1);
NSMutableArray *jsonParseArray = [[NSMutableArray alloc] initWithArray:[finalDictionary1 objectForKey:#"latitude"]];
NSDictionary *res = [jsonParseArray objectAtIndex:1];
NSLog(#"%#", res);
When I run this I get a bunch of errors. I want to get the value of latitude.
Your json don't have latitude key. See below.
{
eventData = {
eventDate = "Jun 13, 2012 12:00:00 AM";
eventLocation = {
latitude = "43.93838383";
longitude = "-3.46";
};
expirationTime = 1339538400000;
imageData = "";
imageFormat = JPEG;
text = hkhkjh;
};
title = accIDENTE;
type = Culture;
}
=> New array with empty object.
NSMutableArray *jsonParseArray = [[NSMutableArray alloc] initWithArray:[finalDictionary1 objectForKey:#"latitude"]];
and you try with none exist element.
NSDictionary *res = [jsonParseArray objectAtIndex:1];
See your json: latitude is not an array. And it's child element of eventLocation. Try to get eventLocation as Dictionary first then get latitude via eventLocation.
Hop this helps!
This code will get the latitude from data.
NSString *jsonString = #"{\"eventData\":{\"eventDate\":\"Jun 13, 2012 12:00:00 AM\",\"eventLocation\":{\"latitude\":43.93838383,\"longitude\":-3.46},\"text\":\"hkhkjh\",\"imageData\":\"\",\"imageFormat\":\"JPEG\",\"expirationTime\":1339538400000},\"type\":\"Culture\",\"title\":\"accIDENTE\"}";
NSData *jsonData1 = [jsonString dataUsingEncoding:NSUTF8StringEncoding];
NSDictionary *finalDictionary1 = [NSJSONSerialization JSONObjectWithData:jsonData1 options:NSJSONReadingAllowFragments error:nil];
NSLog(#"%#", finalDictionary1);
NSString *latitute = finalDictionary1[#"eventData"][#"eventLocation"][#"latitude"];
NSLog(#"%#", latitute);
Although in a real world example were your JSON might come from a server, you will probably want to add error handling, indexing the data in multiple steps assuring the keys exists and values are of the expected type.
Related
i'm working on one objective C application where i'm taking JSON data and i need to insert this data(date) inside Dictionary fillDefaultColors. My fillDefaultColors should be in format like this:
self.fillDefaultColors = #{ #"2017/06/18":greenColor,
#"2017/06/19":orangeColor,
#"2017/06/20":greenColor,
...
};
but when i print in console log they are each in separate row and in application i can see colour just for last item from JSON
2017-06-19 15:30:12.310 CalendarTest[1905:364525] {
"2017/06/20" = "greenColor";
}
2017-06-19 15:30:12.311 CalendarTest[1905:364525] {
"2017/06/18" = "orangeColor";
}
So in application i see background for last date in console 2017/06/18
Here is my code
NSError *error = nil;
NSURL *url = [NSURL URLWithString: #"http://..."];
NSData *data = [NSData dataWithContentsOfURL:url options:NSDataReadingUncached error:&error];
if(!error)
{
NSDictionary* json = [NSJSONSerialization
JSONObjectWithData:data
options:NSJSONReadingMutableContainers
error:&error];
NSMutableArray *array= [json objectForKey:#"horses"];
for(int i=0; i< array.count; i++)
{
NSDictionary *horsedata = [array objectAtIndex:i];
NSString *date = [horsedata objectForKey:#"date"];
NSNumber *averagetemp = [horsedata objectForKey:#"averagetemperature"];
if([averagetemp isEqual:#(28)]) {tempColor = greenColor;} else {
tempColor = orangeColor;
}
self.fillDefaultColors = #{date: tempColor};
NSLog(#"%#", _fillDefaultColors);
}
}
JSON: {"horses":[{"id":1,"name":"Horse","date":"2017/06/17","averagetemperature":28},{"id":1,"name":"Horse","date":"2017/06/18","averagetemperature":25}]}
Thanks
it s because you are allocating a new dictionary in each iteration:
self.fillDefaultColors = #{date: tempColor};
you need to append instead:
NSMutableArray *array= [json objectForKey:#"horses"];
self.fillDefaultColors = [[NSMutableDictionary alloc]init];
for(int i=0; i< array.count; i++)
{
NSDictionary *horsedata = [array objectAtIndex:i];
NSString *date = [horsedata objectForKey:#"date"];
NSNumber *averagetemp = [horsedata objectForKey:#"averagetemperature"];
if([averagetemp isEqual:#(28)]) {tempColor = greenColor;} else {
tempColor = orangeColor;
}
[self.fillDefaultColors setObject:tempColor forKey:date];
NSLog(#"%#", _fillDefaultColors);
}
This is the same solution as in Hussein's answer but with Modern Objective-C Syntax – which has been introduced at least 5 years ago.
NSArray *horses = json[#"horses"];
self.fillDefaultColors = [[NSMutableDictionary alloc] init];
for (NSDictionary *horsedata in horses)
{
NSString *date = horsedata[#"date"];
NSNumber *averagetemp = horsedata[#"averagetemperature"];
self.fillDefaultColors[date] = (averagetemp.integerValue == 28) ? greenColor : orangeColor;
NSLog(#"%#", _fillDefaultColors);
}
Im using foursquare API to get some locations around me, but when the name of that place wasn't in english, the name will be like follows:
name = "\U0645\U0633\U062c\U062f \U0627\U0644\U0633\U064a\U062f\U0629 \U0639\U0627\U0626\U0634\U0629 | Aisha Mosque";
i tried to convert the response to a UTF-8 but nothing changed.
Here is my code:
-(void)setUpLocations{
NSURL *url = [NSURL URLWithString: #"https://api.foursquare...."];
NSData *data = [NSData dataWithContentsOfURL:url];
NSError *error = nil;
NSDictionary *json = [NSJSONSerialization JSONObjectWithData:data options:0 error:&error];
NSLog(#"Response: %#",[[[json objectForKey:#"response"]objectForKey:#"groups"]valueForKey:#"items"]);
}
And the log result is:
contact = {
};
id = 51712507498ec4e8c5ae9f48;
likes = {
count = 0;
groups = (
);
};
location = {
address = Abdoun;
cc = JO;
city = Amman;
country = Jordan;
distance = 3819;
lat = "31.95406043797281";
lng = "35.88095228186612";
};
name = "\U0645\U0633\U062c\U062f \U0627\U0644\U0633\U064a\U062f\U0629 \U0639\U0627\U0626\U0634\U0629 | Aisha Mosque";
restricted = 1;
stats = {
checkinsCount = 43;
tipCount = 2;
usersCount = 23;
};
verified = 0;
},
Any Suggestions ??
EDIT:
here is how i extract the data from the dictionary:
NSDictionary *dic = [[[[json objectForKey:#"response"]objectForKey:#"groups"]valueForKey:#"items"] copy];
namesArray = [[NSArray alloc]initWithArray:[self removeWhiteSpaces:[dic valueForKey:#"name"]]];
-(NSArray *)removeWhiteSpaces:(NSDictionary *)dic{
NSString *str = [NSString stringWithFormat:#"%#",dic];
NSString *str2 = [str stringByReplacingOccurrencesOfString:#"\n" withString:#""];
NSString *secondString = [str2 stringByReplacingOccurrencesOfString:#" " withString:#""];
NSString *thirdString = [secondString stringByReplacingOccurrencesOfString:#"(" withString:#""];
NSString *forthString = [thirdString stringByReplacingOccurrencesOfString:#")" withString:#""];
NSString *fifthString = [forthString stringByReplacingOccurrencesOfString:#"\"" withString:#""];
NSArray *items = [fifthString componentsSeparatedByString:#","];
return items;
}
And in the UITableView:
cell.textLabel.text = [NSString stringWithFormat:#"Name: %# ",[namesArray objectAtIndex:indexPath.row] ];
Update
After trying #Martin R answer i got the same results:
NSDictionary *dic = [[[[json objectForKey:#"response"]objectForKey:#"groups"]valueForKey:#"items"] copy];
NSString *value =[dic valueForKey:#"name"];
NSLog(#"%#", value);
UILabel *lbl = [[UILabel alloc]initWithFrame:self.view.frame];
lbl.numberOfLines = 0;
lbl.text = [NSString stringWithFormat:#"%#",value];;
[self.view addSubview:lbl];
and here is an image of the result
There is no problem.
NSLog() calls the description method of NSDictionary and NSArray, and that prints all non-ASCII characters as \Unnnn escape sequence.
If you extract the string values from the dictionary and print that you will see
that everything is correct.
Simple example:
NSDictionary *dict = #{ #"currency": #"€" };
NSLog(#"%#", dict);
// Output: { currency = "\U20ac"; }
NSString *value = dict[#"currency"];
NSLog(#"%#", value);
// Output: €
UPDATE: The problem seems to be in your removeWhiteSpaces: method, because
NSString *str = [NSString stringWithFormat:#"%#",dic];
already uses the description method to convert the dictionary to a string,
and the following stringByReplacingOccurrencesOfString calls are a (sorry!) very bad
method to fix that.
You should access the dictionary keys with objectForKey instead, or enumerate
the dictionary with for (NSString *key in dic) { ... } and build the desired
array.
UPDATE 2: From the JSON data (posted in chat discussion) it seem that you just need
NSArray *itemsArray = json[#"response"][#"groups"][0][#"items];
NSArray *namesArray = [itemsArray valueForKey:#"name"];
Note that "groups" is an array with one element.
Try to use this one..
[NSString stringWithUTF8String:]
I have to prepare a dictionary for serialization and then post it to server. Dictionary may have several other dictionaries as values for #"items" key. But some brackets interrupt. And server response me an error html.
NSMutableArray *a = [[NSMutableArray alloc]init];
for(int i = 0; i < [self.cartCopy count]; i++) {
NSString *itemNumber = [NSString stringWithFormat:#"%d", i + 1];
NSDictionary *tempDict = #{ itemNumber : #{
#"item_id" : [[self.cartCopy objectAtIndex:i]objectForKey:#"id"],
#"quantity" : [[self.cartCopy objectAtIndex:i]objectForKey:#"quantity"],
#"type" : [[self.cartCopy objectAtIndex:i]objectForKey:#"type"],
#"color_id" : #"0",
}
};
[a addObject:tempDict];
}
NSDictionary *dict = #{
#"date":oDate,
#"address":oAddress,
#"name":oName,
#"shipping_date":oShippingDate,
#"receiver_phone":oReceiverPhone,
#"customer_phone":oCustomerPhone,
#"total_price": oTotalPrice ,
#"additional_info": #"asd",
#"items": a
};
UPDATE: My NSLog of string after [NSJSONSerialization dataWithJSONObject:dict options:kNilOptions error:nil] :
{"address":"asd",
"name":"asd",
"receiver_phone":"123",
"customer_phone":"123",
"total_price":"1",
"date":"2013-03-05 21:22:55",
"additional_info":"asd",
"items":[
{"1":{
"type":"2",
"color_id":"0",
"item_id":10,
"quantity":"3"
}
},
{"2":{
"type":"1",
"color_id":"0",
"item_id":74,
"quantity":"3"
}
}
],
"shipping_date":"2030-03-03 12:12:12"
}
I think the reason is square brackets. How can i delete them?
For example, it works perfectly with dictionary:
NSDictionary *dict = #{
#"date":oDate,
#"address":oAddress,
#"name":oName,
#"shipping_date":oShippingDate,
#"receiver_phone":oReceiverPhone,
#"customer_phone":oCustomerPhone,
#"total_price": oTotalPrice ,
#"additional_info": #"asd",
#"items": #{
#"1":#{
#"type":#"1",
#"color_id":#"0",
#"item_id":#"1",
#"quantity":#"1"
},
#"2":#{
#"type":#"1",
#"color_id":#"0",
#"item_id":#"1",
#"quantity":#"1"
}
}
};
In your example that works perfectly the items object is a dictionary with keys {1, 2}.
In your output JSON your items object is an array.
This array contains 2 objects, each one is a dictionary.
The first contains a single key {1}.
The second contains a single key {2}.
You just need to remove the array and use a dictionary instead to store these dictionaries.
That looks as if you want to send JSON to the server. You can create JSON data from your dictionary with
NSError *error;
NSData *jsonData = [NSJSONSerialization dataWithJSONObject:dict options:0 error:&error];
If you need it as a string:
NSString *jsonString = [[NSString alloc] initWithData:jsonData encoding:NSUTF8StringEncoding];
How can I parse the wind spped for the following JSON that I have received from the link
http://weather.yahooapis.com/forecastjson?w=2502265. I am getting a garbage value from it but getting the rest of the values correctly. Can anybody let me know how can I get the wind speed out of it?
{"units":{"temperature":"F","speed":"mph","distance":"mi","pressure":"in"},"location":{"location_id":"USCA1116","city":"Sunnyvale","state_abbreviation":"CA","country_abbreviation":"US","elevation":82,"latitude":37.39,"longitude":-122.03},"wind":{"speed":0,"direction":"CALM"},"atmosphere":{"humidity":"86","visibility":"10","pressure":"30.21","rising":"falling"},"url":"http:\/\/weather.yahoo.com\/forecast\/USCA1116.html","logo":"http:\/\/l.yimg.com\/a\/i\/us\/nt\/ma\/ma_nws-we_1.gif","astronomy":{"sunrise":"06:27","sunset":"18:11"},"condition":{"text":"Fair","code":"33","image":"http:\/\/l.yimg.com\/a\/i\/us\/we\/52\/33.gif","temperature":49},"forecast":[{"day":"Today","condition":"PM Showers","high_temperature":"64","low_temperature":"47"},{"day":"Tomorrow","condition":"Partly Cloudy","high_temperature":"62","low_temperature":"45"}]}
NSString *linkForWoeid = [NSString stringWithFormat:#"http://where.yahooapis.com/geocode?location=%#,%#&flags=J&gflags=R&appid=zHgnBS4m",latitude,longitude];
NSURL *woeid = [NSURL URLWithString:linkForWoeid];
NSData *WoeidData = [NSData dataWithContentsOfURL:woeid];
if (WoeidData != NULL)
{
NSError *woeiderr = nil;
//NSLog(#"linkForWoeid:%#woeid:%#woeidData:%#",linkForWoeid,woeid,WoeidData);
NSDictionary *response1=[NSJSONSerialization JSONObjectWithData:WoeidData options:NSJSONReadingMutableContainers error:&woeiderr];
NSDictionary *woeidDict = [[[[response1 objectForKey:#"ResultSet"]objectForKey:#"Results"]objectAtIndex:0]objectForKey:#"woeid"];
NSString *address=[NSString stringWithFormat:#"http://weather.yahooapis.com/forecastjson?w=%#",woeidDict];
NSURL *url=[NSURL URLWithString:address];
NSData *data=[NSData dataWithContentsOfURL:url];
NSError *eqw=nil;
if (data != NULL)
{
NSDictionary *response=[NSJSONSerialization JSONObjectWithData:data options:NSJSONReadingMutableContainers error:&eqw];
//NSLog(#"response:%#",response);
NSString *highTempDict = [[[response objectForKey:#"forecast"]objectAtIndex:0] objectForKey:#"high_temperature"];
NSString *temp = [highTempDict stringByAppendingFormat:#" 'F"];
NSString *windSpeed = [[response objectForKey:#"wind"] objectForKey:#"speed"];
NSLog(#"wind :%#",windSpeed);
if (windSpeed == 0)
{
NSLog(#"insideif");
windSpeed = #"0";
}
NSString *imageView = [[response objectForKey:#"condition"]objectForKey:#"image" ];
Hi Rasi Please use NSNumber instead of NSString here
NSNumber *windSpeed = [[response objectForKey:#"wind"] objectForKey:#"speed"];
As in JSON it's coming as integer value (without quotes) so it is not a NSString but NSNumber
And you can get it's string value as [windSpeed stringValue];
I've got this response from JSOn web service:
categoria = (
{
"id_categoria" = 61;
imagen = "http://exular.es/mcommerce/image/data/ipod_classic_4.jpg";
nombre = Gorras;
},
{
"id_categoria" = 59;
imagen = "http://exular.es/mcommerce/image/data/ipod_touch_5.jpg";
nombre = Camisetas;
},
{
"id_categoria" = 60;
imagen = "http://exular.es/mcommerce/image/data/ipod_nano_1.jpg";
nombre = Pantalones;
}
);
}
It is feed in a dictionary in this piece of code:
NSString *responseString = [[NSString alloc] initWithData:responseData encoding:NSUTF8StringEncoding];
//data =nil;
NSLog(#"JSNON %#", responseString);
NSDictionary *results = [responseString JSONValue];
NSLog(#"JSNON %#", results);
I need to iterate all the categories in the dictionary and create an NSArray that contains objects Categories with properties "name" and image".
Many thanks
NSArray *categories = [results objectForKey:#"categoria"];
This will create an array of your category objects. You can pass this array of dictionaries/objects to your custom object or just iterate through it pulling what you need.
Category *cat = [[Category alloc] initWithDictionary:[categories objectAtIndex:0]];
This is just assuming your init is set to handle a dictionary. There isn't enough code to know, but you should be able to figure it out from here.