エラー：[__NSArrayM addObject：]、NILオブジェクト

Question

次のエラーが表示されます。[__NSArrayM addObject:]、NILオブジェクト。クラッシュしないで、私はなぜこれを思い出させるのかを知りたい。 は、ここでそれはオブジェクトが初期化され、メモリ内の参照を保持してきたことを意味私のコード

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]; 

}

Answer 1

です。それはNILではありません。私はあなたがpictureCounts、images、bigUrlがnilでないかどうか、そのプロパティpictureをチェックすべきだと思う

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++; 
    } 

：

Answer 2

はあなたのコードを参照してください。