I get the data from an XML file and I am storing it in NSData object. I want to convert that NSData into an NSDictionary and store that data in a plist.
My code is as follows:
NSURL *url = [NSURL URLWithString:#"http://www.fubar.com/sample.xml"];
NSData *data = [NSData dataWithContentsOfURL:url];
NSLog(#"%#", data);
To convert the data, I am using:
- (NSDictionary *)downloadPlist:(NSString *)url {
NSMutableURLRequest *request = [NSMutableURLRequest requestWithURL:[NSURL URLWithString:url] cachePolicy:NSURLRequestReloadIgnoringLocalCacheData timeoutInterval:10];
NSURLResponse *resp = nil;
NSError *err = nil;
NSData *responseData = [NSURLConnection sendSynchronousRequest:request returningResponse:&resp error:&err];
if (!err) {
NSString *errorDescription = nil;
NSPropertyListFormat format;
NSDictionary *samplePlist = [NSPropertyListSerialization propertyListFromData:responseData mutabilityOption:NSPropertyListImmutable format:&format errorDescription:&errorDescription];
if (!errorDescription)
return samplePlist;
[errorDescription release];
}
return nil;
}
Can anyone please tell me how to do that?
or this:
NSString* dataStr = [[NSString alloc] initWithData:data encoding:NSUTF8StringEncoding];
SBJSON *jsonParser = [SBJSON new];
NSDictionary* result = (NSDictionary*)[jsonParser objectWithString:dataStr error:nil];
[jsonParser release];
[dataStr release];
Try this code:
NSString *newStr1 = [[NSString alloc] initWithData:theData1 encoding:NSUTF8StringEncoding];
NSString *newStr2 = [[NSString alloc] initWithData:theData2 encoding:NSUTF8StringEncoding];
NSString *newStr3 = [[NSString alloc] initWithData:theData3 encoding:NSUTF8StringEncoding];
NSArray *keys = [NSArray arrayWithObjects:#"key1", #"key2", #"key3", nil];
NSArray *objects = [NSArray arrayWithObjects:newStr1 , newStr2 , newStr3 , nil];
NSDictionary *dictionary = [NSDictionary dictionaryWithObjects:objects forKeys:keys];
for (id key in dictionary) {
NSLog(#"key: %#, value: %#", key, [dictionary objectForKey:key]);
}
NSString *path = [[NSBundle mainBundle] pathForResource:#"Login" ofType:#"plist"];
[dictionary writeToFile:path atomically:YES];
//here Login is the plist name.
Happy coding
Related
Im loading a database from a website through JSON. When I download the database I use UTF8 to make all characters appear correctly and when I NSLOG them it all appears as it should. But when I analyze the data using JSON and afterwards try to filter out just a few of the words, the words with special characters become like this: "H\U00f6ghastighetst\U00e5g" where it should say: "Höghastighetståg".
I have tried to find a way to make the code convert the text back to UTF8 after filtering but somehow I can't make it happen. Would be really helpful for some answers.
NSError *error;
NSString *url1 = [NSString stringWithContentsOfURL:[NSURL URLWithString:#"http://www.pumba.se/example.json"] encoding:NSUTF8StringEncoding error:&error];
NSLog(#"Before converting to NSData: %#", url1);
NSData *allCoursesData = [url1 dataUsingEncoding:NSUTF8StringEncoding];
NSMutableDictionary *JSONdictionary = [NSJSONSerialization
JSONObjectWithData:allCoursesData
options:kNilOptions
error:&error];
if( error )
{
NSLog(#"%#", [error localizedDescription]);
}
else {
NSMutableArray *allNames = [NSMutableArray array];
NSArray* entries = [JSONdictionary valueForKeyPath:#"hits.hits"];
for (NSDictionary *hit in entries) {
NSArray *versions = hit[#"versions"];
for (NSDictionary *version in versions) {
NSDictionary *properties = version[#"properties"];
NSString *status = [properties[#"Status"] firstObject];
NSString *name = [properties[#"Name"] firstObject];
if ([status isEqualToString:#"usable"]) {
[allNames addObject:name];
}
}
}
NSLog(#"All names: %#", allNames);
}}
try with
+ (NSString *)utf8StringEncoding:(NSString *)message
{
NSString *uniText = [NSString stringWithUTF8String:[message UTF8String]];
NSData *msgData = [uniText dataUsingEncoding:NSNonLossyASCIIStringEncoding];
message = [[NSString alloc] initWithData:msgData encoding:NSUTF8StringEncoding];
return message;
}
or
+ (NSString *)asciiStringEncoding:(NSString *)message
{
const char *jsonString = [message UTF8String];
NSData *jsonData = [NSData dataWithBytes:jsonString length:strlen(jsonString)];
message = [[NSString alloc] initWithData:jsonData encoding:NSNonLossyASCIIStringEncoding];
return message;
}
and this code can help you
+ (NSDictionary *)jsonStringToObject:(NSString *)jsonString
{
NSData *data = [jsonString dataUsingEncoding:NSUTF8StringEncoding];
NSDictionary *jsonResponse;
if (data)
jsonResponse = [NSJSONSerialization JSONObjectWithData:data options:kNilOptions error:nil];
return jsonResponse;
}
+ (NSString *)objectToJsonString:(NSDictionary *)dict
{
NSError *error;
NSData *jsonData = [NSJSONSerialization dataWithJSONObject:dict options:NSJSONWritingPrettyPrinted error:&error];
if (jsonData.length > 0 && !error)
{
NSString *jsonString = [[NSString alloc] initWithData:jsonData encoding:NSUTF8StringEncoding];
return jsonString;
}
return nil;
}
Cannot encode the data in ios which fetch from webservice.
- (NSData*)encodeDictionary:(NSDictionary*)dictionary {
NSMutableArray *parts = [[NSMutableArray alloc] init];
for (NSString *key in dictionary) {
NSString *encodedValue = [[NSString stringWithFormat:#"%#",[dictionary objectForKey:key]] stringByAddingPercentEscapesUsingEncoding:NSUTF8StringEncoding];
NSString *encodedKey = [[NSString stringWithFormat:#"%#",key] stringByAddingPercentEscapesUsingEncoding:NSUTF8StringEncoding];
NSString *part = [NSString stringWithFormat: #"%#=%#", encodedKey, encodedValue];
[parts addObject:part];
}
NSString *encodedDictionary = [parts componentsJoinedByString:#"&"];
return [encodedDictionary dataUsingEncoding:NSUTF8StringEncoding];
}
It seems you are encoding NSDictionary and generate a NSString. And again Encoding that NSString and returns it.
You may do it in easy way as below.
NSError *error;
NSData *jsonData = [NSJSONSerialization dataWithJSONObject:dictionaryOrArrayToOutput
options:NSJSONWritingPrettyPrinted
error:&error];
if (! jsonData) {
NSLog(#"Got an error: %#", error);
} else {
NSString *jsonString = [[NSString alloc] initWithData:jsonData encoding:NSUTF8StringEncoding];
}
You may return above jsonData in your function to achieve your requirement as below.
- (NSData*)encodeDictionary:(NSDictionary*)dictionary {
NSError *error;
NSData *jsonData = [NSJSONSerialization dataWithJSONObject:dictionary
options:NSJSONWritingPrettyPrinted
error:&error];
if (! jsonData) {
NSLog(#"Got an error: %#", error);
} else {
return jsonData;
}
}
I am using php to get json data and here is response.
{"array":[{"Category":{"charity_id":"2","charity_name":"GiveDirectly","charity_amt":"0.20"}}]}
and here is my Objective-c code
NSError *err;
NSURL *url=[NSURL URLWithString:#"url"];
NSURLRequest *req=[NSURLRequest requestWithURL:url];
NSData *data = [NSURLConnection sendSynchronousRequest:req returningResponse:nil error:&err];
NSDictionary *json = [NSJSONSerialization JSONObjectWithData:data options:0 error:&err];
if ([json isKindOfClass:[NSDictionary class]]){
NSArray *yourStaffDictionaryArray = json[#"array"];
if ([yourStaffDictionaryArray isKindOfClass:[NSArray class]]){
for (NSDictionary *dictionary in yourStaffDictionaryArray) {
for(NSDictionary *dict in dictionary[#"Category"]){
NSLog(#"%#",[[((NSString*)dict) componentsSeparatedByString:#"="] objectAtIndex:0] );
}
}
}
}
But this only returns the name's not the value. I have searched most of the question on this site but nothing helped be. Please help me i am new to iOS.
Thanks
Dictionary output is
{
"charity_amt" = "0.20";
"charity_id" = 2;
"charity_name" = GiveDirectly;
}
You don't need to do ComponentSeparatedByString. Once you get the NSDictionary for #"Category", you can get its value by using its keys.
Something like
if ([json isKindOfClass:[NSDictionary class]]){
NSArray *yourStaffDictionaryArray = json[#"array"];
if ([yourStaffDictionaryArray isKindOfClass:[NSArray class]]){
for (NSDictionary *dictionary in yourStaffDictionaryArray) {
NSDictionary *dict = dictionary[#"Category"];
NSLog(#"%#",dict[#"charity_id"]);
}
}
}
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[#"array"];
for(NSMutableDictionary *dic in array)
{
NSLog(#"%#",dic[#"Category"][#"charity_id"]); // prints 2
NSLog(#"%#",dic[#"Category"][#"charity_name"]); // GiveDirectly
NSLog(#"%#",dic[#"Category"][#"charity_amt"]); // 0.20
}
this is my parser json data, it's demo
- (void)viewDidLoad {
[super viewDidLoad];
// Do any additional setup after loading the view, typically from a nib.
NSString *urlString = #"https://api.foursquare.com/v2/venues/search?categoryId=4bf58dd8d48988d1e0931735&client_id=TZM5LRSRF1QKX1M2PK13SLZXRXITT2GNMB1NN34ZE3PVTJKT&client_secret=250PUUO4N5P0ARWUJTN2KHSW5L31ZGFDITAUNFWVB5Q4WJWY&ll=37.33%2C-122.03&v=20140118";
NSURL *url = [NSURL URLWithString:urlString];
NSURLRequest *request = [NSURLRequest requestWithURL:url];
// NSURLConnection *connection = [[NSURLConnection alloc] initWithRequest:request delegate:self];
NSOperationQueue *queue = [[NSOperationQueue alloc] init];
[NSURLConnection sendAsynchronousRequest:request
queue:queue completionHandler:^(NSURLResponse *response, NSData *data, NSError *connectionError) {
NSString *string = [[NSString alloc] initWithData:data
encoding:NSUTF8StringEncoding];
[self parser:data];
}];
}
- (void)parser:(NSData *)data
{
NSMutableDictionary *dictionary = [NSJSONSerialization JSONObjectWithData:data
options:0
error:nil];
[dictionary enumerateKeysAndObjectsUsingBlock:^(id key, id obj, BOOL *stop) {
[obj enumerateKeysAndObjectsUsingBlock:^(id key, id obj, BOOL *stop) {
}];
}];
}
I want to create a JSON array of the following structure:
"Create Account":{
"RegistryNumber":"",
"People":[{
"PeopleId":"",
"email":"",
"pass":"",
}]
}
I am using the folllowing code to do it:
NSDictionary *content0 = [NSDictionary dictionaryWithObjectsAndKeys:
#"PeopleId", #"0",
#"email", #"email",
#"pass", #"pass",nil];
NSArray *peopledetails = [NSArray arrayWithObjects:content0,nil];
NSMutableDictionary *peopleDict = [[NSMutableDictionary alloc] init];
[peopleDict setObject:#"content0" forKey:#"People"];
NSMutableDictionary *details = [[NSMutableDictionary alloc] init];
[details setObject:#"RegistryNumber" forKey:#"RegistryNumber"];
[details setObject:#"peopleDict" forKey:#"People"];
NSMutableDictionary *MainDict = [[NSMutableDictionary alloc] init];
[MainDict setObject:#"details" forKey:#"Create Account"];
But this gives me an error from the server. I have other API which works fine when array is not in picture.
- (void)simpleJsonParsing
{
// URL request with server
NSHTTPURLResponse *response = nil;
NSString *jsonUrlString = [NSString stringWithFormat:#"URL"];
NSURL *url = [NSURL URLWithString:[jsonUrlString stringByAddingPercentEscapesUsingEncoding:NSUTF8StringEncoding]];
//-- Get request and response though URL
NSURLRequest *request = [[NSURLRequest alloc]initWithURL:url];
NSData *responseData = [NSURLConnection sendSynchronousRequest:request returningResponse:&response error:nil];
//-- JSON Parsing
NSMutableArray *result = [NSJSONSerialization JSONObjectWithData:responseData options:NSJSONReadingMutableContainers error:nil];
NSLog(#"Result = %#",result);
for (NSMutableDictionary *dic in result)
{
NSString *string = dic[#"Create Account"];
if (string)
{
NSData *data = [string dataUsingEncoding:NSUTF8StringEncoding];
dic[#"Create Account"] = [NSJSONSerialization JSONObjectWithData:data options:0 error:nil];
}
else
{
NSLog(#"Error in response");
}
}
}
change
[peopleDict setObject:#"content0" forKey:#"People"];
to
[peopleDict setObject:peopledetails forKey:#"People"];
Remove all #"" for objects.
#"details" is a string and details is an object
Or here is the simple way
NSDictionary *dict=#{
#"Create Account": #{
#"RegistryNumber": #"",
#"People": #[
#{
#"PeopleId": #"",
#"Email": #"",
#"pass":#""
}
]
}
};
I think you have wrong structure
NSDictionary *content0 = [NSDictionary dictionaryWithObjectsAndKeys:
#"PeopleId", #"0",
#"email", #"email",
#"pass", #"pass",nil];
postDict = #{#"Create Account":#{#"RegistryNumber":"","People":content0}}
now convert this into jason and send to your server
I have an Array of Roll Numbers
NSArray *rollArray = [NSArray arrayWithObjects:#"1", #"22", #"24", #"11", nil];
I need to send this array in a Web Service request
whose format is like this (in JSON format)
JSON data
{
"existingRoll":["22","34","45","56"], // Array of roll numbers
"deletedRoll":["20","34","44","56"] // Array of roll numbers
}
but I am facing problem in converting Array of Roll numbers (rollArray) into json String
in the desired format.
I am trying this
NSMutableDictionary *postDict = [[NSMutableDictionary alloc]init];
[postDict setValue:[rollArray componentsJoinedByString:#","] forKey:#"existingRoll"];
NSString *str = [Self convertToJSONString:postDict]; // converts to json string
NSData *jsonData = [NSJSONSerialization dataWithJSONObject:str options:0 error:nil];
[request setHTTPBody:jsonData];
I am using iOS 7
There is no need to use the following code snippets:
[rollArray componentsJoinedByString:#","]
NSString *str = [Self convertToJSONString:postDict];
You can create JSON by using the following code:
NSArray *rollArray = [NSArray arrayWithObjects:#"1", #"22", #"24", #"11", nil];
NSMutableDictionary *postDict = [[NSMutableDictionary alloc]init];
[postDict setValue:rollArray forKey:#"existingRoll"];
NSData *jsonData = [NSJSONSerialization dataWithJSONObject:postDict options:0 error:nil];
// Checking the format
NSLog(#"%#",[[NSString alloc] initWithData:jsonData encoding:NSUTF8StringEncoding]);
Try this :
NSDictionary *object = #{
#"existingRoll":#[#"22",#"34",#"45",#"56"],
#"deletedRoll":#[#"20",#"34",#"44",#"56"]
};
if ([NSJSONSerialization isValidJSONObject:object]) {
NSData* data = [ NSJSONSerialization dataWithJSONObject:object options:NSJSONWritingPrettyPrinted error:nil ];
NSString *str = [[NSString alloc] initWithData:data encoding:NSUTF8StringEncoding];
NSLog(str);
}
NSMutableDictionary *postDict = [[NSMutableDictionary alloc] init];
[postDict setValue:#"Login" forKey:#"methodName"];
[postDict setValue:#"admin" forKey:#"username"];
[postDict setValue:#"12345" forKey:#"password"];
[postDict setValue:#"mobile" forKey:#"clientType"];
NSData *jsonData = [NSJSONSerialization dataWithJSONObject:postDict options:0 error:nil];
// Checking the format
NSString *urlString = [[NSString alloc] initWithData:jsonData encoding:NSUTF8StringEncoding];
// Convert your data and set your request's HTTPBody property
NSString *stringData = [[NSString alloc] initWithFormat:#"jsonRequest=%#", urlString];
//#"jsonRequest={\"methodName\":\"Login\",\"username\":\"admin\",\"password\":\"12345\",\"clientType\":\"web\"}";
NSData *requestBodyData = [stringData dataUsingEncoding:NSUTF8StringEncoding];
You can use following method to get Json string from any type of NSArray :
NSArray *rollArray = [NSArray arrayWithObjects:#"1", #"22", #"24", #"11", nil];
NSData *data = [NSJSONSerialization dataWithJSONObject:rollArray options:0 error:nil];
NSString *jsonString = [[NSString alloc] initWithData:data encoding:NSUTF8StringEncoding];
NSLog(#"Json string is: %#", jsonString);