Question

我正在尝试使用以下方法在Android上创建文件：

document.addEventListener("deviceready", onDeviceReady, false);

function onDeviceReady() {
    window.requestFileSystem(LocalFileSystem.PERSISTENT, 0, gotFS, fail);
}

function gotFS(fileSystem) {
    fileSystem.root.getFile("example.txt", {
        create: true
    }, gotFileEntry, fail);
}

function gotFileEntry(fileEntry) {
    fileEntry.createWriter(gotFileWriter, fail);
}

function gotFileWriter(writer) {
    writer.onwriteend = function(evt) {
        console.log("contents of file now 'some sample text'");
        writer.truncate(11);
        writer.onwriteend = function(evt) {
            console.log("contents of file now 'some sample'");
            writer.seek(4);
            writer.write(" different text");
            writer.onwriteend = function(evt) {
                console.log("contents of file now 'some different text'");
            }
        };
    };
    writer.write("some sample text");
}

function fail(error) {
    console.log(error.code);
}

此代码在iOS上正常工作，我可以在Documents文件夹中看到创建的文件。但是在Android上我没有看到任何文件。

我添加了所有插件。我还按顺序采取了以下步骤

添加插件 cordova插件添加org.apache.cordova.file cordova插件添加org.apache.file-transfer
从我的应用程序中编译和构建android cordova编译android cordova build android

此外，我的配置文件还包含以下条目：

<name>Hello Cordova</name>

<description>
    A sample Apache Cordova application that responds to the deviceready event.
</description>



<access origin="*"/>


<content src="index.html" />

<!-- Preferences for iOS -->
<preference name="AllowInlineMediaPlayback" value="false" />
<preference name="AutoHideSplashScreen" value="true" />
<preference name="BackupWebStorage" value="cloud" />
<preference name="DisallowOverscroll" value="false" />
<preference name="EnableLocation" value="false" /><!-- DEPRECATED -->
<preference name="EnableViewportScale" value="false" />
<preference name="FadeSplashScreen" value="true" />
<preference name="FadeSplashScreenDuration" value=".25" />
<preference name="HideKeyboardFormAccessoryBar" value="false" />
<preference name="KeyboardDisplayRequiresUserAction" value="true" />
<preference name="KeyboardShrinksView" value="false" />
<preference name="MediaPlaybackRequiresUserAction" value="false" />
<preference name="ShowSplashScreenSpinner" value="true" />
<preference name="SuppressesIncrementalRendering" value="false" />
<preference name="TopActivityIndicator" value="gray" />
<preference name="iosPersistentFileLocation" value="Library" />


<feature name="Geolocation">
  <param name="ios-package" value="CDVLocation"/>
</feature>
<feature name="Device">
  <param name="ios-package" value="CDVDevice"/>
</feature>
<feature name="Accelerometer">
  <param name="ios-package" value="CDVAccelerometer"/>
</feature>
<feature name="Compass">
  <param name="ios-package" value="CDVLocation"/>
</feature>
<feature name="Media">
  <param name="ios-package" value="CDVSound"/>
</feature>
<feature name="Camera">
  <param name="ios-package" value="CDVCamera"/>
</feature>
<feature name="Contacts">
  <param name="ios-package" value="CDVContacts"/>
</feature>
<feature name="File">
  <param name="ios-package"  value="CDVFile"/>
</feature>
<feature name="NetworkStatus">
  <param name="ios-package" value="CDVConnection"/>
</feature>
<feature name="Notification">
  <param name="ios-package" value="CDVNotification"/>
</feature>
<feature name="FileTransfer">
  <param name="ios-package" value="CDVFileTransfer"/>
</feature>
<feature name="Capture">
  <param name="ios-package" value="CDVCapture"/>
</feature>
<feature name="Battery">
  <param name="ios-package" value="CDVBattery"/>
</feature>
<feature name="SplashScreen">
  <param name="ios-package" value="CDVSplashScreen"/>
</feature>
<feature name="Echo">
  <param name="ios-package" value="CDVEcho"/>
</feature>
<feature name="Globalization">
  <param name="ios-package" value="CDVGlobalization"/>
</feature>
<feature name="InAppBrowser">
  <param name="ios-package" value="CDVInAppBrowser"/>
</feature>
<feature name="Logger">
  <param name="ios-package" value="CDVLogger"/>
</feature>
<feature name="LocalStorage">
    <param name="ios-package" value="CDVLocalStorage"/>
</feature>
<feature name="File">
    <param name="android-package" value="org.apache.cordova.file.FileUtils" />
</feature>
<feature name="FileTransfer">
    <param name="android-package" value="org.apache.cordova.filetransfer.FileTransfer" />
</feature>
<!-- Deprecated plugins element. REmove in 3.0 -->
<plugins>

</plugins>

我的Android清单文件中包含必要的权限：

以下是我的Cordova版本：3.5.0-0.2.6

在iOS上一切正常。在Android Logcat上出现以下错误：

“Uncaught ReferenceError：LocalFileSystem未定义”，来源：file ?? android_asset / www / app.js