Hm, try to look at the NSValue at https://developer.apple.com/documentation/foundation/nsvalue You can use it like struct aStruct { int a; int b; }; typedef struct aStruct aStruct; Then sort of “wrap” it to an NSValue object like: aStruct struct; struct.a = 0; struct.b = 0; NSValue *anObj = [NSValue value:&struct withObjCType:@encode(aStruct)]; NSArray *array = @[anObj]; To … Read more
Create an NSArray containing your two NSMutableArrays. NSArray *array = [NSArray arrayWithObjects:<#(id), …#>, nil]; Write the array to a file. NSArray *paths = NSSearchPathForDirectoriesInDomains(NSLibraryDirectory, NSUserDomainMask, YES); NSString *libraryDirectory = [paths objectAtIndex:0]; NSString *location = [libraryDirectory stringByAppendingString:@”/somefilename.plist”]; [array writeToFile:location atomically:YES]; Load the array from the file. NSString *path = [bundle pathForResource:@”file” ofType:@”plist”]; NSArry *array = (path … Read more
I would put the two arrays into a dictionary as keys and values. Then you can sort the first array (acting as keys in the dictionary) and quickly access the dictionary’s values in the same order. Note that this will only work if the objects in the first array support NSCopying because that’s how NSDictionary … Read more
The stroke/fill colors only affect the -stroke command. They don’t affect the -appendPath: command. Paths don’t contain per-segment color information. If you need a multi-colored line you’re going to need to stroke each color separately.
NSUserDefaults always returns immutable objects, even if the original object was mutable. It’s in the documentation for objectForKey: The returned object is immutable, even if the value you originally set was mutable. You will need to create a copy of the returned object before you modify it, using [NSMutableArray arrayWithArray:] Probably also best to use … Read more
NSMutableArray is not a concrete class, it is just the abstract superclass of a class cluster. The documentation for NSMutableArray does have information about how to subclass, but also strongly advises you not to! Only subclass if you have a special need for actual storage. A class cluster means that the actual class will be … Read more
Hereby, I compare directly the index of obj1.assetID in stringOrder with the index of obj2.assetID in stringOrder (using Objective-C literals for @() to transform NSString => NSNumber) [items sortUsingComparator:^NSComparisonResult(Attribute *obj1, Attribute *obj2) { return [@([stringOrder indexOfObject:obj1.assetID]) compare:@([stringOrder indexOfObject:obj2.assetID])] }]; Or without ObjC literals : [items sortUsingComparator:^NSComparisonResult(Attribute *obj1, Attribute *obj2) { return [[NSNumber numberWithInt:[stringOrder indexOfObject:obj1.assetID]] compare:[NSNumber … Read more
If you absolutely must use a dictionary container, you have to use a key that is sortable by the order in which you add key-value pairs. Thus, when creating your dictionary, you use a key that is an auto-incrementing integer or similar. You can then sort on the (integer) keys and retrieve the values associated … Read more
To write in file NSArray *paths = NSSearchPathForDirectoriesInDomains(NSDocumentDirectory, NSUserDomainMask, YES); NSString *documentsDirectory = [paths objectAtIndex:0]; NSString *filePath = [documentsDirectory stringByAppendingPathComponent:FILE_NAME]; [myArray writeToFile:filePath atomically:YES]; To read from file NSArray *paths = NSSearchPathForDirectoriesInDomains(NSDocumentDirectory, NSUserDomainMask, YES); NSString *documentsDirectory = [paths objectAtIndex:0]; NSString *filePath = [documentsDirectory stringByAppendingPathComponent:FILE_NAME]; myArray = [NSArray arrayWithContentsOfFile:filePath]; myArray will be nil if file is not … Read more
Note: NSUserDefaults will always return an immutable version of the object you pass in. To store the information: // Get the standardUserDefaults object, store your UITableView data array against a key, synchronize the defaults NSUserDefaults *userDefaults = [NSUserDefaults standardUserDefaults]; [userDefaults setObject:arrayOfImage forKey:@”tableViewDataImage”]; [userDefaults setObject:arrayOfText forKey:@”tableViewDataText”]; [userDefaults synchronize]; To retrieve the information: NSUserDefaults *userDefaults = [NSUserDefaults … Read more