NSImage从字节数组 [英] NSImage from byte array

问题描述

我试图在NSImageView中显示图像，图像包含在字节数组中。我如何做到这一点？从我的理解，我需要将我的byte []转换为NSData变量，并将其馈送到NSImage。它是否正确？我该怎么做？我试过铸造，这不工作，似乎没有任何转换内置...

我试过以下： p>

投射：

  NSData bytesAsMacVariable =（NSData）imageAsBytes; 
  

也尝试了

  NSData bytesAsMacVariable = imageAsBytes as NSData; 
  

最后，尝试传递一个byte []，就像它是一个NSData。

  NSImage imageToShow = new NSImage（imageAsBytes）; 
  

这些都不会工作，就我所见，NSImage或NSData都没有成员函数接受byte []进行转换...

解决方案

您正在转换为对象类型， 指针到对象类型。

尝试更像

  * imageData = [NSData dataWithBytes：byteArray length：arrayLength]; 
 NSImage * image = [[NSImage alloc] initWithData：imageData]; 
 [imageView setImage：image]; 
 [image release]; 
  

指针非常重要。

I'm trying to display an image in a NSImageView, with an image contained in a Byte array. How can I do this? From what I understand I need to convert my byte[] to an NSData variable and feed that to an NSImage. Is this correct? How do I do it? I've tried casting and that doesn't work, and there doesn't seem to be any conversion built in...

I have tried the following:

Casting:

NSData bytesAsMacVariable = (NSData) imageAsBytes;

Also tried

NSData bytesAsMacVariable = imageAsBytes as NSData;

Finally, tried to pass a byte[] as if it was a NSData.

NSImage imageToShow = new NSImage(imageAsBytes);

None of these will work, and as far as I can see, neither NSImage or NSData has a member function that accepts byte[] for conversion...

解决方案

You're casting to the object type, but you should cast to pointer-to-object type.
Try something more like

NSData *imageData = [NSData dataWithBytes:byteArray length:arrayLength];
NSImage *image = [[NSImage alloc] initWithData:imageData];
[imageView setImage:image];
[image release];

The pointers are very important.

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