#鸿蒙通关秘籍#在HarmonyOS NEXT中如何通过缓冲区数组创建ImageSource并解码为PixelMap？

const context : Context = getContext(this);
const resourceMgr : resourceManager.ResourceManager = context.resourceManager;

resourceMgr.getRawFileContent('test.jpg').then((fileData : Uint8Array) => {
    console.log("Succeeded in getting RawFileContent");

    const buffer = fileData.buffer.slice(0);
    const imageSource : image.ImageSource = image.createImageSource(buffer);

    let decodingOptions : image.DecodingOptions = {
        editable: true,
        desiredPixelFormat: 3,
    }

    imageSource.createPixelMap(decodingOptions).then((pixelMap : image.PixelMap) => {
        pixelMap.rotate(90);
        pixelMap.scale(0.5, 0.5);

        console.log("Succeeded in creating PixelMap");
    }).catch((err : BusinessError) => {
        console.error("Failed to create PixelMap");
    });

}).catch((err : BusinessError) => {
    console.error("Failed to get RawFileContent");
});
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