phonegap下载文件从网址到SD卡

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.

来源

2011-08-31 Pushpendra Kuntal

你是否按照此页面中的说明：https://github.com/phonegap/phonegap-plugins/tree/master/Android/Downloader我已经使用这个插件没有问题。

此外，我注意到URL是一个内部IP，电话或模拟器是否可以访问它？

要安装插件，请将downloader.js移动到您项目的www文件夹中，并在html文件中包含对其的引用。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。以下内容添加到RES/XML/plugins.xml文件

来源

2011-10-19 02:37:25 endyourif

什么是对科尔多瓦3.4解决？现在这个链接已经死了。 –

尝试https://github.com/fastrde/phonegap-downloader –

有一个下载方法从URL中的PhoneGap 1.3.0

来源

2011-12-23 12:48:25 Rymar

phonegap下载文件从网址到SD卡

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