如何解决并行下载时 React-Native-fs 下载速度慢
我在下载单个文件时速度很快。但是当我开始下载多个文件时,下载速度太差了。我开始这是我的代码
import { DocumentDirectoryPath,exists,mkdir,readDir,downloadFile,writeFile,readFile} from 'react-native-fs'
function download(fileId,fileUrl){
let path = DocumentDirectoryPath+'/'+'Learning/'+fileId;
let zipPath =DocumentDirectoryPath+'/'+'Learning/'+fileId+"/Compressed.zip";
let exist = await exists(path);
if(exist === false){
await mkdir(path);
console.log("path created",path)
}
//alert("======"+fileUrl)
const downloadPromise = downloadFile({
fromUrl: fileUrl,toFile: zipPath,progress: function ({contentLength,jobId,bytesWritten}) {
if (jobId === downloadPromise.jobId) {
progressCallback(bytesWritten / contentLength);
console.log( "\b",bytesWritten / contentLength)
}
},});
const downloadResult = await downloadPromise.promise;}
然后像这样开始多次下载:
let files = [{url: "https//....",id: "y6HS6"},{url: "https//....",id: "y6HghhS6"}]
files.map(item =>{
download(item.id,item.url)
})
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