Javascript 打开失败：EROFS（只读文件系统）android phonegap应用程序_Javascript_Android_Html_Css_Cordova

Javascript 打开失败：EROFS（只读文件系统）android phonegap应用程序

javascript android html css cordova

Javascript 打开失败：EROFS（只读文件系统）android phonegap应用程序,javascript,android,html,css,cordova,Javascript,Android,Html,Css,Cordova,我正在尝试使用带有PhoneGap的进度事件进行文件传输我的问题是，每当我按下下载按钮时，下面的错误就会出现我在这个链接下找到了代码并完全复制了它：错误： 10-23 23:55:38.407 24464-24508/? 电子/文件传输﹕ {“目标”：“//download.mp3”，“http_状态”：200，“代码”：1，“源”：http://archive.org/download/Kansas_Joe_Memphis_Minnie-When_Levee_Breaks/Kansas

我正在尝试使用带有PhoneGap的进度事件进行文件传输

我的问题是，每当我按下下载按钮时，下面的错误就会出现

我在这个链接下找到了代码并完全复制了它：

错误： 10-23 23:55:38.407 24464-24508/? 电子/文件传输﹕ {“目标”：“//download.mp3”，“http_状态”：200，“代码”：1，“源”：http://archive.org/download/Kansas_Joe_Memphis_Minnie-When_Levee_Breaks/Kansas_Joe_and_Memphis_Minnie-When_the_Levee_Breaks.mp3，“异常”：“/download.mp3:打开失败：EROFS（只读文件系统）”} java.io.FileNotFoundException:/download.mp3:打开失败：EROFS（只读文件系统）在libcore.io.IoBridge.open中（IoBridge.java:409）位于java.io.FileOutputStream。（FileOutputStream.java:88）位于org.apache.cordova.CordovaResourceApi.openOutputStream（CordovaResourceApi.java:329）位于org.apache.cordova.CordovaResourceApi.openOutputStream（CordovaResourceApi.java:310）位于org.apache.cordova.filetransfer.filetransfer$4.run（filetransfer.java:894）位于java.util.concurrent.ThreadPoolExecutor.runWorker（ThreadPoolExecutor.java:1112）位于java.util.concurrent.ThreadPoolExecutor$Worker.run（ThreadPoolExecutor.java:587）运行（Thread.java:841）原因：libcore.io.ErrnoException:打开失败：EROFS（只读文件系统）在libcore.io.Posix.open中（本机方法）在libcore.io.BlockGuardOs.open上（BlockGuardOs.java:110）在libcore.io.IoBridge.open中（IoBridge.java:393）位于java.io.FileOutputStream。（FileOutputStream.java:88）位于org.apache.cordova.CordovaResourceApi.openOutputStream（CordovaResourceApi.java:329）位于org.apache.cordova.CordovaResourceApi.openOutputStream（CordovaResourceApi.java:310）位于org.apache.cordova.filetransfer.filetransfer$4.run（filetransfer.java:894）位于java.util.concurrent.ThreadPoolExecutor.runWorker（ThreadPoolExecutor.java:1112）位于java.util.concurrent.ThreadPoolExecutor$Worker.run（ThreadPoolExecutor.java:587）运行（Thread.java:841）

index.html

<!DOCTYPE html>
<html>
<head>
    <meta http-equiv="Content-Security-Policy" content="default-src *; style-src 'self' 'unsafe-inline'; script-src 'self' 'unsafe-inline' 'unsafe-eval'">
    <meta http-equiv="Content-Type" content="text/html; charset=UTF-8" />
    <meta name = "format-detection" content = "telephone=no"/>
    <meta name="viewport" content="user-scalable=no, initial-scale=1, maximum-scale=1, minimum-scale=1, width=device-width" />
    <link rel="stylesheet" type="text/css" href="css/index.css" />
    <title>FileTransfer Test</title>
</head>
<body>

<div id="content">
    <p>
        Kansas Joe McCoy and Memphis Minnie – "When The Levee Breaks"
    </p>

    <img src="img/KansasJoeAndMemphisMinnie.jpg">

    <p>
        <button id="startDl">Click to Download and Play</button>
    </p>
</div>

<div id="status"></div>

<script type="text/javascript" src="cordova.js"></script>
<script type="text/javascript" src="js/app.js"></script>
</body>
</html>

我找到了一个解决方案，我将完整路径更改为root.toURL（）

document.addEventListener('deviceready', deviceready, false);

var buttomDom;
var statusDom;
var fileSystem;

function deviceready() {
    console.log('dv ready');

    //step one is to request a file system  
    window.requestFileSystem(LocalFileSystem.TEMPORARY, 0, 
        function(fs) {
            fileSystem = fs;

            buttonDom = document.querySelector('#startDl');
            buttonDom.addEventListener('touchend', startDl, false);
            buttonDom.removeAttribute("disabled");

            statusDom = document.querySelector('#status');
        }, function(e) {
            alert('failed to get fs');
            alert(JSON.stringify(e));
        });
}

function startDl() {
    buttonDom.setAttribute("disabled","disabled");

    var ft = new FileTransfer();
    var uri = encodeURI("http://archive.org/download/Kansas_Joe_Memphis_Minnie-When_Levee_Breaks/Kansas_Joe_and_Memphis_Minnie-When_the_Levee_Breaks.mp3");

    var downloadPath = fileSystem.root.fullPath + "/download.mp3";

    ft.onprogress = function(progressEvent) {
        if (progressEvent.lengthComputable) {
            var perc = Math.floor(progressEvent.loaded / progressEvent.total * 100);
            statusDom.innerHTML = perc + "% loaded...";
        } else {
            if(statusDom.innerHTML == "") {
                statusDom.innerHTML = "Loading";
            } else {
                statusDom.innerHTML += ".";
            }
        }
    };

    ft.download(uri, downloadPath, 
    function(entry) {
        statusDom.innerHTML = "";
        var media = new Media(entry.fullPath, null, function(e) { alert(JSON.stringify(e));});
        media.play();

    }, 
    function(error) {
        alert('Crap something went wrong...');  
    });


}