REACT组件将对状态变化授予效果

Question

这是我的代码。 ImageChunks状态变量未正确更新。选择图像返回一个空数组。选择另一个图像返回最后一个图像的base64块的数组。 Setimagechunks（）似乎没有触发重新渲染。是什么原因造成的？任何帮助将不胜感激。

const [ imageChunks, setImageChunks ] = useState([])
    
const handleImageChange = async (e) => {    
            const files = e.target.files
    
            // Break image base64 string into chunks for database upload, store each in object with series (filename) and part
            const getChunks = (filename, baseStr, chunkSize) => {
                const str = baseStr.split("")
                const chunks = []
                let part = 0
                let count = str.length
                let start = 0
                while (count){
                    part++
                    start = str.length - count
                    const allowedCount = count < chunkSize ? count : chunkSize
                    chunks.push({
                        series: filename,
                        part: part,
                        data: str.slice(start, start + allowedCount).join("")
                    })
                    count -= allowedCount
                }
                
                return chunks 
            }
    
            // empty imageChunks array to prepare for new file selection
            const fileChunks = []
    
            for (let i = 0; i < files.length; i++){
                // Push file name to product object imageFiles array  
                const fileNames =  formValues.imageFiles
                fileNames.push(files[i].name)
                setFormValues({...formValues, imageFiles: fileNames})
    
                // get array of file chunk objects, push to imageChunks array
                const file = await new Response(files[i]).arrayBuffer()
                const baseString = Buffer.from(file).toString('base64')
                const chunks = getChunks(files[i].name, baseString, 10000)
    
                fileChunks.push(chunks)
            }
    
            setImageChunks(null)
            setImageChunks([...fileChunks])
            console.log(imageChunks)
        }