在android中讀取遠程xml文件

Question

我在遠程的地方有一個xml文件。我想在我的android項目中使用該xml文件。任何人都可以給我一個這樣的示例代碼。我使用的是android 2.2。

P.S：我可以訪問位於/ res文件夾中的本地xml文件。 我對xPath一無所知。

Answer 1

try { 
      //set the download URL, a url that points to a file on the internet 
      //this is the file to be downloaded 
      URL url = new URL("http://IP/Downloads/data.xml"); 

      //create the new connection 
      HttpURLConnection urlConnection = (HttpURLConnection) url.openConnection(); 



      //and connect! 
      urlConnection.connect(); 

      //set the path where we want to save the file 
      //in this case, going to save it on the root directory of the 
      //sd card. 
      File SDCardRoot = Environment.getExternalStorageDirectory(); 
      //create a new file, specifying the path, and the filename 
      //which we want to save the file as. 
      File file = new File(SDCardRoot,"data.xml"); 

      //this will be used to write the downloaded data into the file we created 
      FileOutputStream fileOutput = new FileOutputStream(file); 

      //this will be used in reading the data from the internet 
      InputStream inputStream = urlConnection.getInputStream(); 

      //this is the total size of the file 
      int totalSize = urlConnection.getContentLength(); 
      progressDialog.setMax(totalSize); 

      //variable to store total downloaded bytes 
      int downloadedSize = 0; 

      //create a buffer... 
      byte[] buffer = new byte[1024]; 
      int bufferLength = 0; //used to store a temporary size of the buffer 

      //now, read through the input buffer and write the contents to the file 
      while ((bufferLength = inputStream.read(buffer)) > 0) { 
        //add the data in the buffer to the file in the file output stream (the file on the sd card 
        fileOutput.write(buffer, 0, bufferLength); 
        //add up the size so we know how much is downloaded 
        downloadedSize += bufferLength; 

      } 
      //close the output stream when done 
      fileOutput.close(); 
      //catch some possible errors... 
    } catch (MalformedURLException e) { 
      e.printStackTrace(); 
    } catch (IOException e) { 
      e.printStackTrace(); 
    } 

嘗試下載XML文件的代碼，並檢查本教程讀取XML http://www.java-samples.com/showtutorial.php?tutorialid=152

Answer 2

如果您嘗試通過遠程xml設置佈局或繪圖或樣式，則不能。

Answer 3

更好的方法字符串讀取它，做任何你想用它做。

public String getXmlFromUrl（String url） {
String xml = null;

try 
{ 
    //default http client 
    HttpClient httpClient = new DefaultHttpClient(); 

    HttpPost httpPost = new HttpPost(url); 

    System.out.println("URL IN PARSER:==="+url+"===="); 

    HttpResponse httpResponse = httpClient.execute(httpPost); 

    HttpEntity httpentity = httpResponse.getEntity(); 

    xml = EntityUtils.toString(httpentity); // I have changed it... because  occur while downloading.. 

    Log.d("response", xml); 
} 
catch(UnsupportedEncodingException e) 
{ 
    e.printStackTrace(); 
} 
catch (ClientProtocolException e) 
{ 
    e.printStackTrace(); 
} 
catch (IOException e) 
{ 
    e.printStackTrace(); 
} 


return xml; 

}