nsdictionary

问题 This is kinda confusing so please bear with me. I have an array (listOfStates) of dictionaries. Where listOfStates has this structure: {stateName} - {stateCapital} {Alabama} - {Montgomery} {Alaska} - {Juneau} {Arizona} - {Phoenix} ... {West Virginia} - {Charleston} {Wisconsin} - {Madison} {Wyoming} - {Cheyenne} This is the code used to obtain the 1st letter of each US State(stateName) in order to group them together alphabetically: listOfStates = [[NSArray alloc] init]; stateIndex = [

问题 This question already has answers here : Deleting objects within a for loop from a NSMutableArray (2 answers) Closed 5 years ago . for (int i = 0; i< [optionDataArr count]; i++) { NSString *sName = [[optionDataArr objectAtIndex:i] objectForKey:kOptionName]; NSString *sPrice = [[optionDataArr objectAtIndex:i] objectForKey:kOptionExtraPrice]; if (sName.length == 0 && sPrice.length == 0) { [optionDataArr removeObjectAtIndex:i]; } } Suppose optionDataArr contains a dictionary having no values and

问题 I am having a hard time trying to get my head around this here: so I have the following JSON: "posts": [ { "id": 42400, "type": "post", "url": "http://dummy.com/noticias/2014/06/senado-promulga-emenda-contra-trabalho-escravo-42400/", "status": "publish", "title": "Lorem ipsum dolor sit amet, consectetur adipisicing elit", "title_plain": "Lorem ipsum dolor sit amet, consectetur adipisicing elit", "content": "<p>Lorem ipsum dolor sit amet, consectetur adipisicing elit</p>", "excerpt": "<p>Lorem

问题 i know many solutions are available here for this problem but I am stuck on a single line which runs sometime successfully n crashes sometimes, i really dont know why this is happening..... here is my code of posting mail in which i m getting the error -[__NSCFDictionary rangeOfString:]: unrecognized selector sent to instance and here is my code of the method which is called on button pressed. NSString* ingredientLine = [arrayOfIngredientList objectAtIndex:i]; NSArray* split ; NSRange range =

问题 I am currently creating a controller class for my plist.in this plist I have a root dictionary that has several types in it (Number, String and Dictionary), In my controller class I check for a plist then add it to the documents so I can read and write to it. From here I read whats in my current plist and pass those values over to tempvars I have set up in this class. This is what my read method looks like in my plist controller class. -(void) readPlistData { // Data.plist code // get paths

问题 Updating this Thread as I have had some other help solving why I was not able to access the NSDictionarys values outside the method... I was initalizing it wrong thus autorelease was being called at the end of the method so when I was calling it outside of that method I was getting all sorts of errors.. So now basically I am trying to allocate the NSDictionarys values to the UITableViewCell Text inside cellForRowAtIndexPath however I am getting this error here is how I am trying to allocate

问题 I named the result resultdict and the NSDictionary looks like this: { data = ( ); summary = { "total_count" = 514; }; } How do I get the "514" from that? I am using swift. 回答1: You can just do it like : var totalCount = yourDict.objectForKey("summary").objectForKey("total_count") convert it to string var totalCount = yourDict.objectForKey("summary").objectForKey("total_count") as! String If you use : println(totalCount) will result in Optional(514) Use that variable as you want 回答2: Try this

问题 I am retrieving datas from JSON by using swift. I am new to JSON. I don't how to retrieve this nested values. My JSON format is below. //JSON DATA { "data": [ { "category_id": 1, "category_name": "category1", "category_icon": "", "category_child": [ { "sub_category_id": 11, "sub_category_name": "subcategoryname1", "sub_category_icon": "" }, { "sub_category_id": 12, "sub_category_name": "subcategoryname2", "sub_category_icon": "" } ] }, { "category_id": 2, "category_name": "category2",

问题 I have an NSArray filled with NSDictionaries . One of the keys the dicts have in common is "name". I have another array, filled with names. I want to search the first array, if it finds a name it is supposed to add the dictionary to a third mutable array. The third array then contains all dictionary which names are in the name-array. 回答1: Use "fast enumeration", commonly also known as for-in loop: for (NSDictionary* dict in myArray) { Also, to compare NSString's, use -isEqualToString:. if ([

问题 If I have a data tree that is something like : NSMutableDictionary (dict1) NSMutableDictionary (dict2) NSMutableArray (array) NSMutableDictionary (dict3) Key1 Key2 NSMutableDictionary (dict_n) Keyn Keyn NSMutableDictionary (dict_n) NSMutableArray (array_n) NSMutableDictionary (dict_n) Keyn Keyn NSMutableDictionary (dict_n) Keyn Keyn If I want to change the value of Key1, is there a simplier way than... getting dict1 then getting dict2 then getting array then getting dict3 converting dict3 to