nsarray

问题 I have been working on this for a few days with help from this great community. I have a NSArray that I need to edit NSStrings within. I have managed to detect a marker in the string and make it bold. However now I am trying to display the strings in the order that they are within the NSArray whilst maintaining the Bold that was added to the specific strings. I can display the individual Bold String ' string ' but I need it to be in order that it is within the array. I know of

问题 I'm trying to perform the relatively simple task of deleting the items in an NSMutableArray that fit a certain criteria. In this particular case, I'd like to delete the items where all of the following are true: city: Seattle state: WA timestamp: more than 60 seconds old An NSLog of my array looks like this: array = ( { city = "Seattle"; state = "WA"; timestamp = 1432844384; }, { city = "Dallas"; state ="TX"; timestamp = 1432844415; }, { city = "Seattle"; state = "WA"; timestamp = 1432845329;

问题 If I have a couple of NSArrays filled with ints , or NSNumbers , like so: A: { 12, 23, 45, 56, 67, 78, 99, 234 } B: { 12, 56, 78, 99, 454, 512 } How do I output an array with numbers that are in A but not in B, like { 23, 45, 67, 234 } 回答1: What you are tying to do is purely a set operation. So you can use NSSet here. You should do minusSet: to get the result you want. NSMutableSet *resultSet = [NSMutableSet setWithArray:A]; NSSet *setB = [NSSet setWithArray:B]; // This is what you need!

问题 I have an NSDictionary that was converted from XML that is really confusing me. If you could take a look and let me know the best method of getting the objects for the key class_id, I would really appreciate it. { response= { "@status" = ok; rosters = { "@page" = 1; "@page_count" = 1; "@records_per_page" = 50; "@total_record_count" = 8; roster = ( { "@class_id" = 0001; "@role" = 0; "@user_id" = 12345; class= { "@active" = false; "@name" = NAME; } } { "@class_id" = 0002; "@role" = 0; "@user_id

问题 I have one main array named originalListArray with multiple objects.Here is the example of object. Example.json I want to find that number of objects from the originalListArray , who have amenity_id matched with my filter data. I have do this, create one predicate usign ANY not self becuase NSArray with NSDictionary and in that Dictionary object may have NSArray data. This is working fine. NSPredicate *predicate=[NSPredicate predicateWithFormat:@"ANY amenities.amenity_id =='1')"]; This is not

问题 I'm trying to store UIImage datas in NSArray , actually 60 images, each with size of 300kb. Then, I'm trying to animate that images in UIImageView . My code: NSMutableArray *arr = [[NSMutableArray alloc] init]; for (int i=0; i<61; ++i) { [arr addObject:[UIImage imageNamed:[NSString stringWithFormat:@"%i.png", i]]]; } img.animationImages = arr; img.animationDuration = 1.5; img.contentMode = UIViewContentModeBottomLeft; [img startAnimating]; When I test it in iPad Simulator 4.3, it works fine.

问题 What is the best way to "slice" an NSArray from the end, rather than the beginning, of the array (for example, finding the subarray containing the last few elements of a NSArray of unknown length)? In Python, you can use negative indices to accomplish this, e.g.: new_list = old_list[-5:-3] What's the most natural way to do this in Objective-C? 回答1: There's nothing to match Python's nice syntax for this, but you could do: NSUInteger count = [myArray count]; NSArray * slice = [myArray

问题 while implementing search functionality I need to filter array of dictionaries. I am using auto complete textfield method for search bar and am storing it into string. I can able to parse the array,But facing with below json [{"CertProfID":"4","Name":"Dodge","Location":"loc4","City":"city4","State":"state4","Zip":"zip5","Website":"http:\/\/cnn.com","Phone":"phone4","Email":"email4"}, {"CertProfID":"5","Name":"cat","Location":"loc5","City":"city5","State":"State5","Zip":"zip5","Website":"web5"

问题 I'm currently retrieving the Top 100 Scores for one of my leaderboards the following way: - (void) retrieveTop100Scores { __block int totalScore = 0; GKLeaderboard *myLB = [[GKLeaderboard alloc] init]; myLB.identifier = [Team currentTeam]; myLB.timeScope = GKLeaderboardTimeScopeAllTime; myLB.playerScope = GKLeaderboardPlayerScopeGlobal; myLB.range = NSMakeRange(1, 100); [myLB loadScoresWithCompletionHandler:^(NSArray *scores, NSError *error) { if (error != nil) { NSLog(@"%@", [error

问题 I have a NSArray and i need to append some values but array.append doesn't seems to works on a NSArray. What can i use to append something on a NSArray like a normal array 回答1: You can not add or append element in NSArray as NSArray is immutable.For this you need to take NSMutableArray 来源： https://stackoverflow.com/questions/26948610/cant-append-value-to-my-nsarray-variable