錯誤：[__NSArrayM addObject：]，NIL對象

我收到以下錯誤：[__NSArrayM addObject:]，NIL對象。但不會崩潰，我想知道爲什麼要顯示這個提醒。這裏是我的代碼錯誤：[__NSArrayM addObject：]，NIL對象

NSMutableArray *picturesCounts = [NSMutableArray array]; 
NSMutableArray *bigUrlArray = [NSMutableArray array]; 
NSMutableArray *pitcturesArray = [NSMutableArray array]; 
NSInteger i = 1; 
for (TNHotelPictures *picture in pictures) { 
    NSString *pictureCounts = [NSString stringWithFormat:@"%ld",(long)picture.images.count]; 
    [picturesCounts addObject:pictureCounts]; 
    [pitcturesArray addObject:picture.images]; 

    for (TNHotelDetailPhotoImages *photoImage in picture.images) { 
     [bigUrlArray addObject:photoImage.bigUrl]; 
    } 
    i++; 
} 
NSInteger imageInAllIndex = imageIndex; 
NSMutableArray *imagesCount = [NSMutableArray array]; 
for (NSInteger m = 0; m<i; m++) { 
    imagesCount = pitcturesArray[(typeIndex-(m+1))] ; 
    imageInAllIndex += imagesCount.count; 
} 

NSMutableArray *array = [NSMutableArray array]; 
    for (NSString *url in bigUrlArray) 
    { 
     if (![url isKindOfClass:[NSString class]]) 
     { 
       return; 
     } 
    TNHotelPhoto *photo = [[TNHotelPhoto alloc] initWithImageURL:[NSURL URLWithString:url]]; 
     [array addObject:photo]; 
    } 

TNHotelPhotoSource *source = [[TNHotelPhotoSource alloc] initWithPhotos:array]; 
TNHotelDetailPhotoBrowserViewController *browserVC = [[TNHotelDetailPhotoBrowserViewController alloc] initWithPhotoSource:source WithImageIndex:imageInAllIndex>=0?imageInAllIndex:0 andImageArray:pictures andTypeIndex:typeIndex]; 

[UIManager showViewController:browserVC];

}

來源

2016-05-13 base

也許有幫助：http://stackoverflow.com/questions/12908045/nsarray-arraywithobjects-if-nil-is-meant-to-mark-array-end-can-i-do-nil-ni – luk2302

您的代碼做一些非常奇怪的事情。 – Sulthan

這意味着該對象已初始化並保持在內存中的參考。它不是NIL。

來源

2016-05-13 09:13:17 Hemang

見代碼：

for (TNHotelPictures *picture in pictures) { 
    NSString *pictureCounts = [NSString stringWithFormat:@"%ld",(long)picture.images.count]; 
    [picturesCounts addObject:pictureCounts]; 
    [pitcturesArray addObject:picture.images]; 

    for (TNHotelDetailPhotoImages *photoImage in picture.images) { 
     [bigUrlArray addObject:photoImage.bigUrl]; 
    } 
    i++; 
    }

我認爲你應該檢查是否picture其屬性pictureCounts，images，bigUrl不爲零。

來源

2016-05-13 09:37:46 childrenOurFuture

非常感謝你，photoImage.bigUrl應該判斷她是零，因爲 – base

錯誤：[__NSArrayM addObject：]，NIL對象

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