What I am trying to accomplish, I've one macro defined,
#define NAME_List #"a,aaa,aac,aacaaba,abbbb"
I'm converting this to NSArray using componentsSeperatedByString: its fine giving me array of NSString objects, instead I want NSDictionary objects, something like,
[0] -> "Name" = "a"
[1] -> "Name" = "aaa"
[2] -> "Name" = "aac""
& not like,
[0] - > a
[1] - > aaa
[2] - > aac
I tried this (but I don't have any idea for NSKeyedArchiver or NSPropertyListFormat or
NSPropertyListSerialization classes)
NSData *data = [NSKeyedArchiver archivedDataWithRootObject:arrayNames];
NSError *error = nil;
NSPropertyListFormat plistFormat;
NSDictionary *temp = [NSPropertyListSerialization propertyListWithData:data options:NSPropertyListImmutable format:&plistFormat error:&error];
Update
I can iterate through array and create dictionary object and add it to array to do this, but I don't want to do it like this!
Is there any functions available which can do this?
NSMutableArray *resultArr = [NSMutableArray array];
NSArray *arr = [NAME_LIST componentsSeperatedByString:#","];
for(NSString *str in arr) {
NSDictionary *nameDictionary = [NSDictionary dictionaryWithObject:str forKey:#"Name"];
[resultArr addObject:nameDictionary];
}
NSLog(#"%#", resultArr);
Related
Can anybody help me create an NSDictionary format of the following structure:
{
key1 = "value1";
key2 = "value2";
key3 = [
{
key01 = "value01";
key02 = "value02";
},
{
key01 = "value01";
key02 = "value02";
},
{
key01 = "value01";
key02 = "value02";
}
];
}
Try this code it might help you.
NSDictionary *dicationary = #{
#"key1":#"value1",
#"key2":#"value2",
#"key3":#[#{#"key01":#"value01",#"key02":#"value02"},
#{#"key01":#"value01",#"key02":#"value02"},
#{#"key01":#"value01",#"key02":#"value02"}]
};
There is API in obj-c to convert Json to nsdictionary .I guess you should try that :
First convert json to nsdata (assuming you above JSON is in string format)
2.Then you API to convert that to NSDictionary :
NSDictionary *dictionary = [NSJSONSerialization JSONObjectWithData:data options:kNilOptions error:&error];
Just to answer your question about converting that JSON data to NSDictionary, here it is:
(assuming you already got your JSON data)
// add the first 2 VALUES with it's KEYS
NSMutableDictionary *mainDict = [NSMutableDictionary dictionary];
[mainDict setValue:VALUE1 forKey:KEY1];
[mainDict setValue:VALUE2 forKey:KEY2];
// then for the last KEY, create a mutable array where you will store your sub dictionaries
NSMutableArray *ma = [NSMutableArray array];
NSMutableDictionary *subDict = [NSMutableDictionary dictionary];
[subDict setValue:SUB_VALUE1 forKey:SUB_KEY1];
[subDict setValue:SUB_VALUE1 forKey:SUB_KEY2];
[ma addObject:subDict];
// then add that array to your main dictionary
[mainDict setValue:ma forKey:KEY3];
// check the output
NSLog(#"mainDict : %#", mainDict);
// SAMPLE DATA - Test this if this is what you want
NSMutableDictionary *mainDict = [NSMutableDictionary dictionary];
[mainDict setValue:#"value1" forKey:#"key1"];
[mainDict setValue:#"value2" forKey:#"key2"];
NSMutableArray *ma = [NSMutableArray array];
NSMutableDictionary *subDict = [NSMutableDictionary dictionary];
[subDict setValue:#"subValue1" forKey:#"subKey1"];
[subDict setValue:#"subValue2" forKey:#"subKey2"];
[ma addObject:subDict];
[mainDict setValue:ma forKey:#"key3"];
NSLog(#"mainDict : %#", mainDict);
The following should work for you:
NSString *jsonString = #"{\"ID\":{\"Content\":268,\"type\":\"text\"}}";
NSData *data = [jsonString dataUsingEncoding:NSUTF8StringEncoding];
NSDictionary *jsonDict = [NSJSONSerialization JSONObjectWithData:data options:0 error:nil];
NSLog(#"%#", jsonDict[#"ID"][#"Content"]);
Will return you:
268
I get this JSON object from my web service
0: {
Username: "John"
Password: "12345"
Position: "Admin"
Job: "Developer"
ResourceJobId: 1
}
When I try to assign a value, for example, to Username JSON string, I get a semantic error:
id obj = [NSJSONSerialization JSONObjectWithData:data
options:NSJSONReadingAllowFragments
error:&error];
for (NSDictionary *dictionary in array) {
NSString *usernameString = #"";
//this line of code gives me an error: Expression is not assignable
[dictionary objectForKey:#"Username"] = usernameString ;
I know how get the JSON object with NSJSONSerialization class, but my target is how assign the value #"" to the JSON object.
So how can I assign the value #"" to the Username JSON string?
While you are trying to fetched dictionary from array. it is not mutable dictionary so you need to created NSMutableDictionary while fetching data from Array. following code will help you to change username.
for (NSMutableDictionary *dictionary in array)
{
NSMutableDictionary* dictTemp = [NSMutableDictionary dictionaryWithDictionary:dictionary];
[dictTemp setObject:usernameString forKey#"Username"];
[_arrayList replaceObjectAtIndex:index withObject:dictTemp];
}
Well your assignment operation is written wrong, it should be indeed like this:
If you need to get value from dictionary
usernameString = [dictionary objectForKey:#"Username"];
If you want to set a value to your dictionary, first of all your dictionary should be NSMutableDictionary
[dictionary setObject:usernameString forKey:#"Username"];
NSData *data = [NSData dataWithContentsOfURL:url];
NSError *error;
id obj = [NSJSONSerialization JSONObjectWithData:data
options:NSJSONReadingAllowFragments
error:&error];
if(!error && [obj isKindOfClass:[NSArray class]]){
NSArray *array = (NSArray *)obj;
Booking *booking = nil;
for (NSMutableDictionary *dictionary in array) {
NSString *usernameString = #"";
//this line of code gives me an error: Expression is not assignable
[dictionary objectForKey:#"Username"] = usernameString;
Yes, is a compiler error
You need to have a mutabledictionary inorder to change the value. Try this
for (NSDictionary *dictionary in array) {
NSMutableDictionary *mutableDictionary = [NSMutableDictionary dictionaryWithDictionary:dictionary];
NSString *usernameString = #"";
[mutableDictionary setValue:#"" forKey:usernameString];
}
Even the answers are correct, I want to add that you do not have to do this your own. NSJSONSerialization already has a solution for that. Simply pass as options one of these:
NSJSONReadingMutableContainers = (1UL << 0),
NSJSONReadingMutableLeaves = (1UL << 1),
when reading the JSON.
I'm struck how to enumerate JSON by remove first object in iOS programming as below
From
[{"001": {"name":"test", "url":"test"},"002":{"name":"test1", "url":"test1"},"003":{"name":"test2", "url":"test2"}}]
to
[ {"name":"test", "url":"test"},{"name":"test1", "url":"test1"},{"name":"test2", "url":"test2"}]
Pls help to recommend me or suggestion coding.
Thank you.
Try this,
NSArray *jsonArray = //parsedJsonArray
NSDictionary *values = [jsonArray objectAtIndex:0];
NSArray *valuesArray = [values allValues];
And the valuesArray will contain the data in format,
[ {"name":"test", "url":"test"},
{"name":"test1", "url":"test1"}, {"name":"test2", "url":"test2"}]
You can easily convert a json string to a NSMutableArray :
NSError *error;
// Get a NSMutableArray from the json string
NSData *data = [yourJsonString dataUsingEncoding:NSUTF8StringEncoding];
NSMutableArray *arrayResult = [NSJSONSerialization JSONObjectWithData:data options:NSJSONReadingMutableContainers error:&error];
// Remove the first object
[arrayResult removeObject:[arrayResult firstObject]];
jsonDataArray1=[[NSMutableArray alloc]initWithArray:[JSON objectForKey:#"001"]];
jsonDataArray2=[[NSMutableArray alloc]initWithArray:[JSON objectForKey:#"002"]];
jsonDataArray3=[[NSMutableArray alloc]initWithArray:[JSON objectForKey:#"003"]];
jsonDataArrayFinal=[[NSMutableArray alloc]initWithObjects:jsonDataArray1,jsonDataArray2,jsonDataArray3 nil];
initialize all above arrays in viedidload
list = ({
clouds = 24;
speed = "4.31";
temp = {
day = "283.84";
eve = "283.84";
night = "283.84";
};
}),
Please can anyone tell me what am I doing wrong - I want to display list-->temp-->day value in table first I am trying to get data in an array which is terminating.
Here is my code am I doing any wrong
NSDictionary *json = [NSJSONSerialization JSONObjectWithData:dataBuffer options:-1 error:nil];
NSLog(#"%#",json);
NSMutableDictionary * list = [json objectForKey:#"list"];
NSMutableArray *arrays = [[NSMutableArray alloc]initWithCapacity:0];
for (NSDictionary *lists in [list allValues]) {
[arrays addObject:[list valueForKey:#"temp"]];
}
If you want to access day then use below line,
NSString *day = [json valueForKeyPath:#"list.temp.day"];
Your list is an array, so if you want to do your things without changing much, you can replace:
NSMutableDictionary * list = [json objectForKey:#"list"];
With:
NSMutableDictionary * list = [[json objectForKey:#"list"] objectAtIndex:0];
I get this JSON from a web service:
{
"Respons": [{
"status": "101",
"uid": "0"
}]
}
I have tried to access the data with the following:
NSError* error;
//Response is a NSArray declared in header file.
self.response = [NSJSONSerialization JSONObjectWithData:data options:kNilOptions error:&error];
NSString *test = [[self.response objectAtIndex:0] objectForKey:#"status"]; //[__NSCFDictionary objectAtIndex:]: unrecognized selector sent to instance
NSString *test = [[self.response objectForKey:#"status"] objectAtIndex:0]; //(null)
But none of them work, if i NSLog the NSArray holding the serialized data, this i what i get:
{
Respons = (
{
status = 105;
uid = 0;
}
);
}
How do i access the data?
Your JSON represents a dictionary, for whom the value associated with the Respons key is an array. And that array has a single object, itself a dictionary. And that dictionary has two keys, status and uid.
So, for example, if you wanted to extract the status, I believe you need:
NSArray *array = [self.response objectForKey:#"Respons"];
NSDictionary *dictionary = [array objectAtIndex:0];
NSString *status = [dictionary objectForKey:#"status"];
Or, in latest versions of the compiler:
NSArray *array = self.response[#"Respons"];
NSDictionary *dictionary = array[0];
NSString *status = dictionary[#"status"];
Or, more concisely:
NSString *status = self.response[#"Respons"][0][#"status"];
Your top level object isn't an array, it's a dictionary. You can easily bypass this and add the contents of that key to your array.
self.response = [[NSJSONSerialization JSONObjectWithData:data options:kNilOptions error:&error] objectForKey:#"Respons"];