I am working on phonegap with android. i want to download a file from given url to my sd card.
**this is my index.html**
<!DOCTYPE HTML>
<html>
<head>
<meta name="viewport" content="width=320; user-scalable=no" />
<meta http-equiv="Content-type" content="text/html; charset=utf-8">
<title>PhoneGap Demo With JQuery Mobile</title>
<link rel="stylesheet" href="jquery.mobile/jquery.mobile-1.0b2.css" type="text/css" charset="utf-8" />
<link rel="stylesheet" href="pgandjqm-style-override.css" type="text/css" charset="utf-8" />
<script type="text/javascript" src="jquery.mobile/jquery-1.6.2.min"></script>
<script type="text/javascript" charset="utf-8" src="phonegap-1.0.0.js"></script>
<script src="jquery.mobile/jquery.mobile-1.0b2.js"></script>
<script type="text/javascript" charset="utf-8" src="main.js"></script>
<script type="text/javascript" charset="utf-8" src="downloader.js"></script>
<script type="text/javascript">
function down1()
{
window.plugins.downloader.downloadFile("http://192.168.1.214/sample/Winter.jpg","/mnt/sdcard/","archive.zip", false,
function(data){
if(data=="exist")
{
alert("File already exist");
}
else
{
alert("File saved on sd card")
}
},function(data){ alert("error is : "+data); });
}
</script>
</head>
<body>
<div data-role="button" onclick="down1();">Get data</div>
</body>
</html>
**this is my downloader.js**
function Downloader() {
}
Downloader.prototype.downloadFile = function(fileUrl,dirName,fileName,overwrite,win,fail) {
if(overwrite==false) overwrite="false";
else overwrite="true";
PhoneGap.exec(win, fail, "Downloader", "downloadFile", [fileUrl,dirName,fileName,overwrite]);
};
PhoneGap.addConstructor(function() {
console.log('=============i am in addConstructor================');
PhoneGap.addPlugin("downloader", new Downloader());
PluginManager.addService("Downloader","com.example.pgplugins.DownloaderPlugin");
});
**this is my Downloader.java**
package com.example.pgplugins.DownloaderPlugin;
//package com.example.pgplugins.downloaderPlugin;
/*
@author Mauro Rocco http://www.toforge.com
*/
import org.json.JSONArray;
import org.json.JSONException;
import android.util.Log;
import com.phonegap.DroidGap;
import com.phonegap.api.Plugin;
import com.phonegap.api.PluginResult;
import java.io.File;
import java.io.FileOutputStream;
import java.io.IOException;
import java.io.InputStream;
import java.net.HttpURLConnection;
import java.net.URL;
public class Downloader extends Plugin{
@Override
public PluginResult execute(String action, JSONArray args, String callbackId) {
System.out.println("=============i am in head class================");
if (action.equals("downloadFile")) {
try {
return this.downloadUrl(args.getString(0),args.getString(1),args.getString(2),args.getString(3));
} catch (JSONException e) {
return new PluginResult(PluginResult.Status.ERROR, "Param errrors");
}
}
else {
return new PluginResult(PluginResult.Status.INVALID_ACTION);
}
}
private PluginResult downloadUrl(String fileUrl, String dirName, String fileName, String overwrite){
try{
Log.d("DownloaderPlugin", "DIRECTORY CALLED /sdcard/"+dirName+" created");
File dir = new File("/sdcard/"+dirName);
if(!dir.exists()){
Log.d("DownloaderPlugin", "directory /sdcard/"+dirName+" created");
dir.mkdirs();
}
File file = new File("/sdcard/"+dirName+fileName);
if(overwrite.equals("false") && file.exists()){
Log.d("DownloaderPlugin", "File already exist");
return new PluginResult(PluginResult.Status.OK, "exist");
}
URL url = new URL(fileUrl);
HttpURLConnection ucon = (HttpURLConnection) url.openConnection();
ucon.setRequestMethod("GET");
ucon.setDoOutput(true);
ucon.connect();
Log.d("DownloaderPlugin", "download begining");
Log.d("DownloaderPlugin", "download url:" + url);
InputStream is = ucon.getInputStream();
byte[] buffer = new byte[1024];
int len1 = 0;
FileOutputStream fos = new FileOutputStream(file);
while ( (len1 = is.read(buffer)) > 0 ) {
fos.write(buffer,0, len1);
}
fos.close();
Log.d("DownloaderPlugin", "Download complete in" + fileName);
} catch (IOException e) {
Log.d("DownloaderPlugin", "Error: " + e);
return new PluginResult(PluginResult.Status.ERROR, "Error: " + e);
}
return new PluginResult(PluginResult.Status.OK, fileName);
}
}
**and this is my simple main class:-**
package com.example.pgplugins.DownloaderPlugin;
import com.phonegap.*;
import android.os.Bundle;
public class musicdownloader extends DroidGap {
/** Called when the activity is first created. */
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
super.loadUrl("file:///android_asset/www/index.html");
}
}
when i run this program, it is not doing anything. This is my whole project code, so please tell me what is mistake i have done.
PhoneGap如何从URL下载文件到SD卡？
4
- Pushpendra Kuntal
2个回答
2
您是否按照此页面的说明进行操作：https://github.com/phonegap/phonegap-plugins/tree/master/Android/Downloader。我已经使用此插件而没有出现问题。
另外，我注意到URL是一个内部IP地址，手机或模拟器是否可以访问它？
要安装插件，请将downloader.js移动到项目的www文件夹中，并在html文件中包含对它的引用。 在项目的src/文件夹中创建一个名为“com/phonegap/plugins/downloader”的文件夹。 然后将Java文件复制到该新文件夹中。 在res/xml/plugins.xml文件中添加以下内容
- endyourif
1
Cordova 3.4的解决方案是什么？那个链接已经失效了。 - coding_idiot
1
在PhoneGap 1.3.0中有一个从URL下载的方法
- Rymar
网页内容由stack overflow 提供, 点击上面的可以查看英文原文，
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