WinJS,从字节数组中显示图像? [英] WinJS, display image from a byte array?
问题描述
我正在寻找一种显示存储在字节数组中的JPEG图像的方法。这是一个用Javascript构建的Windows 8商店应用程序。字节数组从C#WinRT组件返回。它在C#中的类型是 byte []
。
I'm looking for a way to display a JPEG image stored in a byte array. This is a Windows 8 Store App built in Javascript. The byte array is returned from a C# WinRT component. Its type in C# is byte[]
.
基本上,我想要的是获取一个对象以便我可以调用:
Basically, what I want is to get an object so that I can call:
URL.createObjectURL(bytearray, {oneTimeOnly: true});
。目前这会产生运行时错误,因为不支持数组接口。
upon. Currently this generates a runtime error because the array interface is not supported.
提前致谢。
推荐答案
我发现了一种更容易的方法。
I discovered a far easier method.
var blob = new Blob([bytes], {type: "image/jpg"});
var url = URL.createObjectURL(blob, { oneTimeOnly: true });
Blob
实际上直接由<$支持C $ C> URL.createObjectURL 。唯一的问题是你必须指定一个mime格式来识别缓冲区格式,在我的情况下是可能的。
Blob
is actually supported directly by URL.createObjectURL
. The only catch is that you have to specify a mime format to identify the buffer format, which in my case is possible.
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