Question

我使用Facebook的AsyncDisplayKit创建CollectionView，CollectionView为ASCollectionView，我正在尝试添加UIKit's UIImageView细胞。我得到了以下的崩溃：

  *** Terminating app due to uncaught exception 'NSInternalInconsistencyException', reason: ''

  *** First throw call stack:
  (

0   CoreFoundation                      0x00bf2946 __exceptionPreprocess + 182

1   libobjc.A.dylib                     0x0087ba97 objc_exception_throw + 44

2   CoreFoundation                      0x00bf27da +[NSException raise:format:arguments:] + 138

3   Foundation                          0x004ef810 -[NSAssertionHandler handleFailureInMethod:object:file:lineNumber:description:] + 118

4   Sample                              0x000b21df -[ASDisplayNode view] + 607

5   Sample                              0x0007a0f5 -[PlainImageNode initWithCellOfSize:] + 533

6   Sample                              0x0007e34d -[ASVC_UIImage_ViewController collectionView:nodeForItemAtIndexPath:] + 269

7   Sample                              0x00085c36 -[ASCollectionView dataController:nodeAtIndexPath:] + 150


libc++abi.dylib: terminating with uncaught exception of type NSException

在崩溃的代码之后，这是我为ASCellNode创建的ASCollectionView的init方法。我正在尝试将UIImageView添加到ASCellNode：

- (instancetype)initWithCellOfSize:(CGSize)size
{
if (!(self = [super init]))
    return nil;

_kittenSize = size;

// kitten image, with a solid background colour serving as placeholder
_imageView = [[UIImageView alloc] init];
_imageView.image = [UIImage imageNamed:@"testImage.jpg"];
_imageView.frame = CGRectMake(10.0f, 10.0f, 40.0f, 40.0f);
[self.view addSubview:_imageView];

[self setBackgroundColor:[UIColor yellowColor]];
return self;
}

我担心如果我可以将UIKit组件添加到ASCollectionView's ASCellNode。是的，我们无法在UIKit层次结构中添加ASCellNode's个组件吗？

Answer 1

最后，我能够使用 - [ASDisplayNode initWithViewBlock：]在ASCellNode子类实现中添加UIKit组件。

以下是通过UIImageView包装ASDisplayNode并返回结果节点的代码：

ASDisplayNode *_imageViewNode = [[ASDisplayNode alloc] initWithViewBlock:^{
    UIImageView *image = [[UIImageView alloc]initWithImage:[UIImage imageNamed:@"testImage.jpg"]];
    return image;
}];
_imageViewNode.frame = CGRectMake(10.0f, 10.0f, 40.0f, 40.0f);
[self addSubnode:_imageViewNode];

类似地，UIWebView组件的代码：

ASDisplayNode *webViewNode = [[ASDisplayNode alloc]initWithViewBlock:^{

NSString *strURL = @"http://www.google.com";
NSURL *url = [NSURL URLWithString:strURL];
NSURLRequest *urlRequest = [NSURLRequest requestWithURL:url];
UIWebView *webview = [[UIWebView alloc]init];
[webview loadRequest:urlRequest];
return webview;
}];

[webViewNode setFrame:CGRectMake(0, 0, self.view.frame.size.width, self.view.frame.size.height)];
[self.view addSubview:webViewNode.view];

当我从AsyncDisplayKit向ASCellNode添加UIImageView时，应用程序崩溃

1 个答案: