我从此链接下面的代码http://weblogs.asp.net/soever/cordova-file-transfer-unzip-and-present-adventures根据我的需要更改了URL。点击“加载”按钮没有触发事件,LocalFileSystem也没有定义
<!DOCTYPE html>
<html>
<head>
<meta charset="utf-8" />
<title>DemoZipUnzip</title>
<meta http-equiv="Content-type" content="text/html; charset=utf-8">
<meta name="viewport" content="width=device-width, initial-scale=1.0, maximum-scale=1.0, minimum-scale=1.0, user-scalable=0">
<!-- DemoZipUnzip references -->
<link href="css/index.css" rel="stylesheet" />
<!-- Cordova reference, this is added to your app when it's built. -->
<!--<script src="cordova.js"></script>-->
<script src="scripts/platformOverrides.js"></script>
<script src="scripts/index.js"></script>
</head>
<body>
<button id="btnLoad">Load</button>
<button id="btnUnzip">Unzip</button>
<hr />
<div id="statusPlace"></div>
<hr />
<img id="imgPlace" src="http://lorempixel.com/320/200">
<br />
<div id="txtPlace">TEXT COMES HERE</div>
<script type="text/javascript">
document.addEventListener("deviceready", onDeviceReady, false);
function registerHandlers() {
document.getElementById("btnLoad").onclick = function() {
var that = this,
App = new DownloadApp(),
fileName = "Archive.zip",
uri = "http://localhost:63961/check/contentupdate/availableupdates",
folderName = "content";
console.log("load button clicked");
document.getElementById("statusPlace").innerHTML += "<br/>Loading: " + uri;
App.load(uri, folderName, fileName,
/*progress*/function (percentage) { document.getElementById("statusPlace").innerHTML += "<br/>" + percentage + "%"; },
/*success*/function (entry) { document.getElementById("statusPlace").innerHTML += "<br/>Zip saved to: " + entry.toURL(); },
/*fail*/function() { document.getElementById("statusPlace").innerHTML += "<br/>Failed load zip: " + that.uri; }
);
};
document.getElementById("btnUnzip").onclick = function() {
var that = this,
App = new DownloadApp(),
fileName = "Archive.zip",
folderName = "content";
console.log("zip button clicked");
App.unzip(folderName, fileName,
/*success*/function() { alert("Unzipped and assigned"); },
/*fail*/function (error) { alert("Unzip failed: " + error.code); }
);
};
}
function onDeviceReady() {
// navigator.splashscreen.hide();
document.getElementById("statusPlace").innerHTML += "<br/>deviceready event received";
registerHandlers();
}
var DownloadApp = function() {
}
DownloadApp.prototype = {
load: function (uri, folderName, fileName, progress, success, fail) {
var that = this;
that.progress = progress;
that.success = success;
that.fail = fail;
filePath = "";
that.getFilesystem(
function (fileSystem) {
console.log("GotFS");
that.getFolder(fileSystem, folderName, function (folder) {
filePath = folder.toURL() + "/" + fileName;
that.transferFile(uri, filePath, progress, success, fail);
}, function (error) {
console.log("Failed to get folder: " + error.code);
typeof that.fail === 'function' && that.fail(error);
});
},
function (error) {
console.log("Failed to get filesystem: " + error.code);
typeof that.fail === 'function' && that.fail(error);
}
);
},
getFilesystem:function (success, fail) {
window.requestFileSystem = window.requestFileSystem || window.webkitRequestFileSystem;
window.requestFileSystem(LocalFileSystem.PERSISTENT, 0, success, fail);
},
getFolder: function (fileSystem, folderName, success, fail) {
fileSystem.root.getDirectory(folderName, { create: true, exclusive: false }, success, fail)
},
transferFile: function (uri, filePath, progress, success, fail) {
var that = this;
that.progress = progress;
that.success = success;
that.fail = fail;
var transfer = new FileTransfer();
transfer.onprogress = function (progressEvent) {
if (progressEvent.lengthComputable) {
var perc = Math.floor(progressEvent.loaded/progressEvent.total * 100);
typeof that.progress === 'function' && that.progress(perc); // progression on scale 0..100 (percentage) as number
} else {
}
};
transfer.download(
uri,
filePath,
function (entry) {
console.log("File saved to: " + entry.toURL());
typeof that.success === 'function' && that.success(entry);
},
function (error) {
console.log("An error has occurred: Code = " + error.code);
console.log("download error source " + error.source);
console.log("download error target " + error.target);
console.log("download error code " + error.code);
typeof that.fail === 'function' && that.fail(error);
}
);
},
unzip: function (folderName, fileName, success, fail) {
var that = this;
that.success = success;
that.fail = fail;
zip.unzip("cdvfile://localhost/persistent/" + folderName + "/" + fileName,
"cdvfile://localhost/persistent/" + folderName,
function (code) {
console.log("result: " + code);
that.getFilesystem(
function (fileSystem) {
console.log("gotFS");
that.getFolder(fileSystem, folderName + "/ftpack", function (folder) {
document.getElementById("imgPlace").src = folder.nativeURL + "/img.jpg";
folder.getFile("text.html", { create: false }, function (fileEntry) {
fileEntry.file(function (file) {
var reader = new FileReader();
reader.onloadend = function (evt) {
console.log("Read as text");
console.log(evt.target.result);
document.getElementById("txtPlace").innerHTML = evt.target.result;
typeof that.success === ' function && that.success();'
};
reader.readAsText(file);
}, function (error) {
console.log("Failed to get file");
typeof that.fail === 'function' && that.fail(error);
});
}, function (error) {
console.log("failed to get file: " + error.code);
typeof that.fail === 'function' && that.fail(error);
});
}, function (error) {
console.log("failed to get folder: " + error.code);
typeof that.fail === 'function' && that.fail(error);
});
}, function (error) {
console.log("failed to get filesystem: " + error.code);
typeof that.fail === 'function' && that.fail(error);
});
}
);
}
}
</script>
因为我想实现这样的家伙在他的职位,下载一个ZIP文件,然后解压到本地沙盒文件系统。当我使用“多设备混合应用程序”+ Cordova扩展在Visual Studio 2013中复制并粘贴此代码并尝试使用Ripple-Nexus7(平板电脑)运行它时,它带来了一个不错的用户界面,但是当我单击“加载”第一次在下面的一段代码中给我错误。
getFilesystem:function (success, fail) {
window.requestFileSystem = window.requestFileSystem || window.webkitRequestFileSystem;
window.requestFileSystem(LocalFileSystem.PERSISTENT, 0, success, fail);
},
“LocalFileSystem”没有定义,那么我想补充文件,从内VS2013 config.xml中的插件选项卡中文件传输的插件,但它无法取得使用Plugman这些插件。最后,我从GitHub下载了这些软件包,并在解决方案资源管理器中的项目中添加了一个plug_ins文件夹,并将这些插件放入该plug_ins文件夹中,保持其内部文件和文件夹结构不变。现在它不再给我这个错误了(尽管我还没有能够在intellisense中找到LocalFileSystem对象,这意味着一些奇怪的原因,它不会给我同样的LocalFileSystem未定义的错误,但仍然这些插件不工作)。
现在,当我运行代码和UI出现后,我点击“加载”按钮什么也没有发生,在此之前,“OnDeviceReady”函数应该在“deviceready”事件中调用,但没有任何事情发生在那里。
请大家在这方面我需要很多帮助,因为我对JavaScript和科尔多瓦的东西很陌生。 我会衷心感谢所有能够帮助我解决这些问题的人。
我把我的笔记本电脑带到不同的位置,我可以通过使用config.xml的插件选项卡下载Cordova扩展,并构建成功。但它仍然给我同样的错误LocalFileSystem未定义。现在我完全掌握了什么是错的想法。 – user2913184 2014-10-30 01:20:34
我真的很感激任何意见/建议。 – user2913184 2014-10-31 16:30:50
你有没有试过用仿真器代替纹波运行你的代码? Chrome浏览器默认不启用文件系统访问权限。要解决这个问题,请按照第一条评论[这里]中的步骤操作(http://www.tricedesigns.com/2012/07/31/emulating-phonegapcordova-apps-in-the-browser/) – Avani 2014-10-31 18:18:04