标签: nsmutablearray

文档没有说明这一点.当一个旧物体被"移走"并且一个新物体进入它的位置时,旧物体会发生什么？我必须自己发布吗？

我试图查看一个NSMutableDictionary加载NSMutableArray,我搞砸了,我不知道如何.我正在尝试加载更大的游戏问题,如果它们不是正确的级别,则删除它们.在我尝试删除之前,我没有收到错误.谁能看到这段代码中的缺陷？我非常感激!

谢谢,

〜g ^

{
NSUserDefaults *settings = [NSUserDefaults standardUserDefaults];
NSString *GameLevel = [[NSString alloc] initWithFormat: [settings objectForKey:kLevelKey]];

NSBundle *Bundle = [NSBundle mainBundle];
NSString *PListPath = [Bundle pathForResource:@"questions" ofType:@"plist"];

NSMutableDictionary *Dictionary = [[NSMutableDictionary alloc] initWithContentsOfFile:PListPath]; 

self.QuestionDetailsByLevel = Dictionary;
[Dictionary release];

NSMutableArray *Components = [[NSMutableArray alloc] initWithArray:[QuestionDetailsByLevel allKeys]];
self.QuestionsByLevel = Components;

int QuestionCount = [self.QuestionsByLevel count] - 1;

for (int j = 0; j < QuestionCount - 1; j++)
{

    NSString *SelectedQuestion = [self.QuestionsByLevel objectAtIndex:j];
    NSMutableArray *Array = [QuestionDetailsByLevel objectForKey:SelectedQuestion];
    self.QDetailsByLevel …

好的:

• 我有NSMutableArray 1
  • 我也有NSMutableArray 2

我想从数组1中删除与数组2中的对象匹配的所有对象.

有任何想法吗？

我有NSMutableArray的NSMutableDictionary(NSString对象).NSString对象之一实际上是一个日期,我需要根据该日期对NSMutableArray进行排序,我不希望它将日期排序为字符串.我该怎么做？

我正在做最后一点内存管理整理,有些事我不明白.我已经检查了所有文档,Stack Overflow等,但仍然没有得到它.我怀疑它与数组有关.

我有一个NSMutableArray实例变量,用于保存从另一个数组中的对象创建的对象.

-viewDidLoad 按如下方式初始化数组:

self.photoAlbum = [[NSMutableArray alloc] initWithCapacity:100];

然后它调用一个填充它们的方法.

int i = 0;
for (Gem *gem in self.entityArray) {
    NSString * filePath = [[NSString alloc] initWithFormat: @"%@/%@2.jpg", [sysPaths objectAtIndex: 0], gem.detailsTitle];  
    // there is some stuff in here that means that there isn't a one to one relationship between the objects in gem and those in photo
    Photo *photo = [[Photo alloc] init];
    photo.filePath = filePath;
    photo.title = gem.title;
    photo.index = [NSNumber numberWithInt:i];
    [self.photoAlbum addObject:photo];
    [filePath …

我有这个方法处理一些我似乎无法正确的数组.与alloc和init相关的东西.

- (void)addBookmark
{
    // Get the user defaults object
    NSUserDefaults *userDefaults = [NSUserDefaults standardUserDefaults];

    // Load your bookmarks (editable array)
    NSMutableArray *bookmarks = [[NSMutableArray alloc]init];
    NSArray *bookmarksLoaded = [userDefaults arrayForKey:@"bookmarks"];
    if (bookmarksLoaded != nil) {
        [bookmarks initWithArray:bookmarksLoaded];
    } else {
        [bookmarks init];
    }

    // Add a bookmark
    NSMutableDictionary *bookmark = [NSMutableDictionary new];
    [bookmark setValue:@"value" forKey:@"name"];
    [bookmark setValue:@"value" forKey:@"description"];
    [bookmark setValue:@"value" forKey:@"code"];
    [bookmarks addObject:bookmark];

    // Save your (updated) bookmarks
    [userDefaults setObject:bookmarks forKey:@"bookmarks"];
    [userDefaults synchronize];

    // Memory cleanup
    [bookmarks release];
}

我在我的数组中添加对象时发生错误 - [__ NSArrayI addObjectsFromArray:]:无法识别的选择器发送到实例0xa0c5f70

id max;
   NSMutableArray * MovePointsArray=[[NSMutableArray alloc]init];
    max=[pointsArray objectAtIndex:0];
    for(int i=0;i<[pointsArray count];i++){

        if ([pointsArray objectAtIndex:i] > max) {
            max=[pointsArray objectAtIndex:i];
            [MovePointsArray addObject:max];
        }

    }

   NSMutableArray * pointArray =[NSArray arrayWithObjects: [pointsArray objectAtIndex:0],[pointsArray lastObject], nil];
    [pointArray addObjectsFromArray:MovePointsArray];

没有得到我,我做错了.

我正在尝试对其NSMutableArray对象是类似于此的自定义类的实例进行深层复制:

@interface CustomParent : NSObject
@property NSInteger Id;
@property (strong, nonatomic) NSString *IdStr;
@property (weak, nonatomic) NSDate *Date; 
@property (strong, nonatomic) NSMutableArray *CustomChildren;
@property (strong, nonatomic) CustomType *Type;
@property float Value;
@end

我知道有很多关于复制对象的帖子,但我找不到用于获取具有集合成员或属性的对象的完整副本的示例.NSMutableArray *dstArray = [[NSMutableArray alloc] initWithArray:srcArray copyItems:YES];引发涉及该copyWithZone方法的异常.

我怎样才能做到这一点？谢谢!

var objects: AnyObject? = NSKeyedUnarchiver.unarchiveObjectWithData(data)

如何将对象转换为NSMutableArray？我存档了NSMutableArray.

我通过componentsSeparatedByString将字符串转换为数组。它返回数组完美。但是当string为空时，返回1个对象。

为什么会这样？

NSMutableArray *imagesList=[[[productDetail objectForKey:@"productImage"] componentsSeparatedByString:@","]mutableCopy];