处理数组中的多个字符串和整数

Question

I am trying to create an app in which I have an array(?) that holds the name and other information(2 strings, 3 ints) of the user. I also want the user to specify how many names the app can hold.

I was wondering exactly how would I do this? I was wondering if I can use a multidimensional array.

Thanks

Answer 1

听起来您想要的是一个User类，其中包含每个用户具有的属性以及这些属性的数组。

Answer 2

You can use an NSMutableArray that contains NSDictionaries of the items.

NSMutableArray *array = [NSMutableArray array];

NSString *name = @"Name ";
NSString *value1 = @"Value 1";
int       value2 = 2;
NSDictionary *dict = [NSDictionary dictionaryWithObjectsAndKeys:
                      name, @"name",
                      value1, @"value1Name",
                      [NSNumber numberWithInt:value2], @"value2Name",
                      nil];
[array addObject: dict];

// Create more dictioaries as there are more items and add them to the array

Answer 3

As stated previously, your best bet would be to add a class to hold the information and then add each object into an NSArray (Here is an example):

@interface User : NSObject
{
  NSString *string1;
  NSString *string2;
  int int1;
  int int2;
  int int3;
}

@property (nonatomic, retain) NSString *string1;
@property (nonatomic, retain) NSString *string2;
@property (nonatomic) int int1;
@property (nonatomic) int int2;
@property (nonatomic) int int3;

@end

@implementation User

@synthesize string1, string2, int1, int2, int3;

// Add init and dealloc methods here

@end

// creating objects somewhere else in the code
User *userObj1 = [[User alloc] init];
User *userObj2 = [[User alloc] init];
userObj1.string1 = @"User1";
userObj1.int1 = 7;

NSArray *arrayOfUserObjects = 
  [[NSArray alloc] initWithObjects: userObj1, userObj2, nil];
[userObj1 release];
[userObj2 release];

// do stuff with array with User Objects

Answer 4

Yeah, either a custom class or a dictionary. Or instead of a dictionary you can have another array, if you prefer. With NSArray you can have any other Objective-C object as elements, including other NSArrays, NSDictionarys, or objects of your own custom class. (You could do the same with an array of NSObject pointers, but NSArray nicely handles retains for you.)