How to store the given below into NSDictionary
{
"Test":"Example"
}
You can add value for key by using this
NSDictionary *dictionary=[NSDictionary dictionaryWithObjectsAndKeys:#"Test",#"Example", nil];
You can add value for key by using 'initWithObjects:(objects) forKeys:'
NSDictionary* dictionary = [[NSDictionary alloc] initWithObjects:#[#"Example",#"Example2"] forKeys:#[#"Test",#"Test2"]];
NSLog(#"%#",dictionary);
//{
// Test = Example;
// Test2 = Example2;
//}
Or you can use NSMutableDictionary :
NSMutableDictionary *mutableDictionary = [[NSMutableDictionary alloc] init];
[mutableDictionary setObject:#"Example" forKey:#"Test"];
[mutableDictionary setObject:#"Example2" forKey:#"Test2"];
NSLog(#"%#",mutableDictionary);
//{
// Test = Example;
// Test2 = Example2;
//}
Same output for these. Also you should take a look
Related
I have a pList looking like this when i log it:
{
Hans = {
Highscore = 0;
Name = Hans;
};
},
{
joe = {
Highscore = 0;
Name = joe;
};
},
{
Iben = {
Highscore = 0;
Name = Iben;
};
},
{
Erik = {
Highscore = 0;
Name = Erik;
};
}
I would really like to make these values in my pList into objects of Players when ViewDidLoad is called. Im not sure how to do so thought. Can somebody maybe help?
Load the plist into an array (appears you already have this but still I added this step)
NSString *path = [[NSBundle mainBundle] pathForResource:#"PlayerData" //Filename
ofType:#"plist"];
NSArray *loadedArray = [[NSArray alloc] initWithContentsOfFile:path];
Create an empty mutable array to store your player instances:
NSMutableArray *playersArray = [[NSMutableArray alloc] init];
Loop through your loaded array, creating Player instances and adding them to your mutable array
for (NSDictionary *dictionary in loadedArray) {
Player *player = [[Player alloc] init];
player.name = dictionary[#"Name"];
player.highscore = dictionary[#"Highscore"];
[playersArray addObject:player];
}
Note: Ideally you want a initialiser method in your player, like this:
- (instancetype)initWithName:(NSString *)name highscore:(NSNumber *)highscore;
I got this NSMutableDictionary that contains a object and a key.
The key is: TemplateID and the Object is a number.
My problem is i can't get the Object out, without the key.
Can anyone help?
// Defining stuff...
templateData = [[NSMutableArray alloc] initWithCapacity:0];
[templateData addObjectsFromArray:[[WebXML sharedInstance] extractAddTemplate]];
NSMutableDictionary *dict = [[NSMutableDictionary alloc] initWithObjectsAndKeys:templateData, #"TemplateID", nil];
// First method...
NSArray *keys = [dict allKeys];
id aKey = [keys objectAtIndex:0];
id anObject = [dict objectForKey:aKey];
NSLog(#"anObject: %#", anObject);
// In NSLog it says: anObject: TemplateID = <theObject>;
// I just want anObject: <theObject>
// Second method...
for (id key in dict) {
id anObject = [dict objectForKey:key];
NSLog(#"anObject: %#", anObject);
// In NSLog it says: anObject: TemplateID = <theObject>;
// I just want anObject: <theObject>
}
// Third method...
NSArray * myArray = [NSArray arrayWithObject:#"TemplateID"];
NSMutableDictionary *anotherDict = [[NSMutableDictionary alloc] initWithObjects:templateData forKeys:myArray];
NSLog(#"anotherDict: %#", anotherDict);
// In NSLog it says: anotherDict: TemplateID = <theObject>;
// I just want anotherDict: <theObject>
// Mikkel
The following is encoded JSON data from a PHP webpage.
{
{
"news_date" = "2011-11-09";
"news_id" = 5;
"news_imageName" = "newsImage_111110_7633.jpg";
"news_thread" = "test1";
"news_title" = "test1 Title";
},
{
"news_date" = "2011-11-10";
"news_id" = 12;
"news_imageName" = "newsImage_111110_2060.jpg";
"news_thread" = "thread2";
"news_title" = "title2";
},
// and so on...
}
I'd like to grab one buch of info (date/id/image/thread/title), and store it as an instance of a class. However, I have no clue on how to access each object in 2D arrays.
The following is the code I've written to test if I can access them, but it doesn't work.
What would be the problem?
NSURL *jsonURL = [NSURL URLWithString:#"http://www.sangminkim.com/UBCKISS/category/news/jsonNews.php"];
NSString *jsonData = [[NSString alloc] initWithContentsOfURL:jsonURL];
SBJsonParser *parser = [[SBJsonParser alloc] init];
contentArray = [parser objectWithString:jsonData];
NSLog(#"array: %#", [[contentArray objectAtIndex:0] objectAtIndex:0]); // CRASH!!
In JSON terminology, that’s not a two-dimensional array: it’s an array whose elements are objects. In Cocoa terminology, it’s an array whose elements are dictionaries.
You can read them like this:
NSArray *newsArray = [parser objectWithString:jsonData];
for (NSDictionary *newsItem in newsArray) {
NSString *newsDate = [newsItem objectForKey:#"news_date"];
NSUInteger newsId = [[newsItem objectForKey:#"news_id"] integerValue];
NSString *newsImageName = [newsItem objectForKey:#"news_imageName"];
NSString *newsThread = [newsItem objectForKey:#"news_thread"];
NSString *newsTitle = [newsItem objectForKey:#"news_title"];
// Do something with the data above
}
You gave me a chance to checkout iOS 5 Native JSON parser, so no external libraries needed, try this :
-(void)testJson
{
NSURL *jsonURL = [NSURL URLWithString:#"http://www.sangminkim.com/UBCKISS/category/news/jsonNews.php"];
NSData *jsonData = [NSData dataWithContentsOfURL:jsonURL];
NSError* error;
NSArray* json = [NSJSONSerialization
JSONObjectWithData:jsonData //1
options:kNilOptions
error:&error];
NSLog(#"First Dictionary: %#", [json objectAtIndex:0]);
//Log output:
// First Dictionary: {
// "news_date" = "2011-11-09";
// "news_id" = 5;
// "news_imageName" = "newsImage_111110_7633.jpg";
// "news_thread" = " \Uc774\Uc81c \Uc571 \Uac1c\Ubc1c \Uc2dc\Uc791\Ud574\Ub3c4 \Ub420\Uac70 \Uac19\Uc740\Ub370? ";
// "news_title" = "\Ub418\Ub294\Uac70 \Uac19\Uc9c0?";
// }
//Each item parsed is an NSDictionary
NSDictionary* item1 = [json objectAtIndex:0];
NSLog(#"Item1.news_date= %#", [item1 objectForKey:#"news_date"]);
//Log output: Item1.news_date= 2011-11-09
}
I updated to cocos2d from 0.99.4 to 0.99.5. While it was on the older version I had the high score list working and I was able to add the NSDictionary to NSMutableArray with no problems.
Now that I've updated it won't add the NSDictionary variable scoreDetails to my NSMutableArray scoreList. Here's my code:
StatsManager.h
#interface StatsManager : NSObject {
NSMutableArray *scoreList;
NSUserDefaults *saveHighScore;
NSMutableArray *printableScoreList;
//NSMutableArray *scoreListTestOne;
float highScoreHelloWorld;
}
StatsManager.m
-(void)setHighScore:(float)highScore nameStrings:(NSString*)nameString {
NSNumber *newHighScore = [NSNumber numberWithFloat:highScore];
NSLog(#"%# highScore", newHighScore);
NSDictionary *scoreDetails = [NSDictionary dictionaryWithObjectsAndKeys:nameString, #"name", newHighScore, #"score", nil];
NSLog(#"%#", scoreDetails);
//NSMutableArray *testTwo = [[NSMutableArray alloc] init];
[scoreList addObject:scoreDetails];
NSLog(#"scoreList %#", scoreList);
//[scoreListTestOne addObject:scoreDetails];
//NSLog(#"scoreListTestOne %#", scoreListTestOne);
//sort
NSSortDescriptor *sort = [[NSSortDescriptor alloc] initWithKey:#"score" ascending:NO];
[scoreList sortUsingDescriptors:[NSArray arrayWithObject:sort]];
printableScoreList = scoreList;
NSLog(#"printableScoreList %#", printableScoreList);
//NSLog(#"scoreListTestOne %#", scoreListTestOne);
}
The line in question is
[scoreList addObject:scoreDetails];
I created a local NSMutableArray variable in the setHighScore function and tried adding the scoreDetails to that and it worked. but why doesn't it work like I've coded it above anymore?
I alloc init my scoreList here:
#implementation StatsManager
static StatsManager *_sharedStatsManager = nil;
-(id)init {
scoreList = [[NSMutableArray alloc] init];
//playerNames = [[NSMutableArray alloc] init];
//playerScores = [[NSMutableArray alloc] init];
printableScoreList = [[NSMutableArray alloc] init];
//listOfScoresTest = [[NSMutableDictionary alloc] initWithCapacity:5];
/*if ([scoreList count] == 0) {
for (int i = 0; i < 5; i++) {
[scoreList addObject:[NSNumber numberWithFloat:0.00]];
}
}*/
return [super init];
}
I should also mention that I created a new projectB and transferred my files/images from my old projectA to the new one because the old one wouldn't compile anymore because of some duplicate error. But i "cleaned all targets" again and it worked but that also has the same problem as my new projectB
Do you initialize scoreList ivar in init or so forth?
- (id)init
{
/* snip */
scoreList = [[NSMutableArray alloc] init];
return self;
}
- (void)dealloc
{
[scoreList release];
[super dealloc];
}
Ok Georg I reconsidered your suggestion about overwriting it later.
and it had something to do with my NSUserdefaults. I commented them out and now it add's the objects to my NSMutableArray. I'm pretty new to NSUserdefaults so I don't know exactly how to use it atm lol
-(void)save
{
//make another array to save the scores.
saveHighScore = [NSUserDefaults standardUserDefaults];
//[saveHighScore setObject:scoreListNew forKey:#"DodgerAppBeta"];
[saveHighScore synchronize];
//[[NSUserDefaults standardUserDefaults] setObject:scoreListTestOne forKey:#"DodgerBeta"];
//[[NSUserDefaults standardUserDefaults] synchronize];
}
-(void)load
{
saveHighScore = [NSUserDefaults standardUserDefaults];
//scoreListNew = [[saveHighScore objectForKey:#"DodgerAppBeta"] mutableCopy];
printableScoreList = [[saveHighScore objectForKey:#"DodgerAppBeta"] mutableCopy];
//NSLog(#"scoreListTestOne %#", scoreListTestOne);
//[printableScoreList addObject:[[NSUserDefaults standardUserDefaults] objectForKey:#"Dodger"]];
NSLog(#"PSL %#", printableScoreList);
}
I am relatively new to Objective-C and now I have a problem in my iPhone app that I don't fully understand.
I try to use a NSMutableDictionary, this does not seem to work as i expect for some reason. When I run the debugger and do po numberToCallerMap to see the dictionary, I get an exception. I have read the documentation for NSMutableDictionary on how to initialize it, but I can not see what I am doing wrong. Help and advice are appreciated. The variable causing me problem is numberToCallerMap, here is the relevant function:
- (void)setData:(NSString*)value{
[list release];
list = [[NSMutableArray alloc] init];
SBJSON *json = [[[SBJSON alloc] init] autorelease];
NSMutableDictionary* numberToCallerMap;
CallerInfo* caller;
NSDictionary* callerInfo;
#try {
NSArray *array = (NSArray*)[json objectWithString:value];
// reading all the items in the array one by one
numberToCallerMap = [NSMutableDictionary dictionary];
for (id *item in array) {
// if the item is NSDictionary (in this case ... different json file will probably have a different class)
NSDictionary *dict2 = (NSDictionary *) item;
CallInfo *data = [CallInfo alloc];
[data initFromDictionary:dict2];
callerInfo = (NSDictionary*)[dict2 valueForKey:#"caller"] ;
//Here, we want the phonenumber to be part of the CallerInfo object instead.
// It is sent from the server as part of the Call-object
NSString* number = (NSString*)[dict2 valueForKey:#"phoneNumber"];
[callerInfo setValue:number forKey:#"phoneNumber"];
caller = (CallerInfo*)[numberToCallerMap valueForKey:number];
if(caller == nil || [caller isKindOfClass:[NSNull class]]){
caller = [CallerInfo alloc];
[caller initFromDictionary:callerInfo];
[numberToCallerMap setValue:caller forKey:number];
[list insertObject:caller atIndex:0];
}
[caller addRecentCall:data];
}
}
#catch (NSException * e) {
[list release];
list = [[NSMutableArray alloc] init];
}
#finally {
[numberToCallerMap release];
}
}
This is probably not the only problem, but you are not alloc-ing your numberToCallerMap dictionary, you are getting it from a convenience class method -- [NSMutableDictionary dictionary] -- that returns it autoreleased. So you should not call release on it yourself.