Android Open Source - chat.android Sync Resources Activity

From Project

Back to project page chat.android.
License

The source code is released under:
GNU General Public License
If you think the Android project chat.android listed in this page is inappropriate, such as containing malicious code/tools or violating the copyright, please email info at java2s dot com, thanks.
Java Source Code

package org.chat.android;
//from   www . j  ava  2  s  .  co m
import java.io.BufferedInputStream;
import java.io.BufferedReader;
import java.io.ByteArrayOutputStream;
import java.io.File;
import java.io.FileOutputStream;
import java.io.IOException;
import java.io.InputStream;
import java.io.InputStreamReader;
import java.io.OutputStream;
import java.net.HttpURLConnection;
import java.net.MalformedURLException;
import java.net.URL;
import java.net.URLEncoder;
import java.util.ArrayList;
import java.util.Iterator;

import javax.net.ssl.HttpsURLConnection;

import org.apache.http.HttpResponse;
import org.apache.http.HttpStatus;
import org.apache.http.StatusLine;
import org.apache.http.client.ClientProtocolException;
import org.apache.http.client.HttpClient;
import org.apache.http.client.methods.HttpGet;
import org.apache.http.impl.client.DefaultHttpClient;
import org.chat.android.Auth.AccountGeneral;
import org.json.JSONArray;
import org.json.JSONException;
import org.json.JSONObject;

import android.accounts.AccountManager;
import android.accounts.AuthenticatorException;
import android.accounts.OperationCanceledException;
import android.app.Activity;
import android.content.Context;
import android.content.Intent;
import android.net.ConnectivityManager;
import android.net.NetworkInfo;
import android.os.AsyncTask;
import android.os.Build;
import android.os.Bundle;
import android.os.Environment;
import android.util.Log;
import android.view.View;
import android.widget.EditText;
import android.widget.TextView;

public class SyncResourcesActivity extends Activity {
  private TextView textView1;
  private EditText editText1;
  private String clientToken;
  
    /** Called when the activity is first created. */
    @Override
    public void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.syncresources);
        textView1 = (TextView) findViewById(R.id.textView1);
        editText1 = (EditText) findViewById(R.id.editText1);
    }
    
    /** Called when the user selects the Send button */
    public void sendReq(View view) {
      textView1.setText("");
      
      ConnectivityManager connMgr = (ConnectivityManager) 
              getSystemService(Context.CONNECTIVITY_SERVICE);
          NetworkInfo networkInfo = connMgr.getActiveNetworkInfo();
          
      if (networkInfo != null && networkInfo.isConnected()) {
        // ensure we only download big files if we are connected via WiFi
        // http://developer.android.com/reference/android/net/NetworkInfo.html#getType%28%29
        if (networkInfo.getType() == ConnectivityManager.TYPE_WIFI) {
            // fetch data
          if (editText1.getText().toString().isEmpty()) {
            new RequestTask().execute(getApplicationContext().getResources().getString(R.string.base_url));
          } else {
            new RequestTask().execute(editText1.getText().toString());            
          }
        } else {
          textView1.setText("Not connected via WiFi. Aborting download");
        }
      } else {
          // display error
        textView1.setText("No network connection active");
      } 
    }
    
    private class RequestTask extends AsyncTask<String, String, String>{

        @Override
        protected String doInBackground(String... uri) {
          boolean downloadSuccess = false;
//        String baseUrl = getApplicationContext().getResources().getString(R.string.base_url);
        String baseUrl = uri[0];
//          String paramToken = "?client_access_token="+clientToken;
          
          String urlAssets = baseUrl + "/assets/";
          urlAssets = urlAssets.replaceAll("(?<!(http:|https:))//", "/");
//          urlAssets = urlAssets.concat(paramToken);
          
          try {
            // retrieve list of all videos
            HttpURLConnection urlConnection = (HttpURLConnection) new URL(urlAssets).openConnection();                      
            // unsure connection times out after 10 seconds
                urlConnection.setConnectTimeout(10000);
                ArrayList<String> videoFileNames = new ArrayList<String>();
                
                // checking response to see if it worked ok
                if (urlConnection.getResponseCode() == HttpURLConnection.HTTP_OK){
//                  Log.i("SyncAdapter","Status code: "+urlConnection.getResponseCode()+" and status line: "+urlConnection.getResponseMessage());
                  try {
                    InputStream in = new BufferedInputStream(urlConnection.getInputStream());
                    String videos = convertStreamToString(in);
                    JSONArray jsonArray = new JSONArray(videos);
                    Log.i("SyncAdapter", "Downloading the following assets: "+jsonArray.toString());
                    // put JSONArray into a ArrayList
                      for(int i = 0, count = jsonArray.length(); i< count; i++)
                      {
                          try {
                            videoFileNames.add((String)jsonArray.get(i));
                          }
                          catch (JSONException e) {
                              e.printStackTrace();
                          }
                      }
//                        videoFileNames = convertJSONtoStringArray(jsonArray);
                    } catch (JSONException e) {            
              e.printStackTrace();
            } 
                  finally {
                      urlConnection.disconnect();
                    }
                } else {
                  urlConnection.disconnect();
                }
                
                downloadSuccess = true;
                Iterator<String> iter = videoFileNames.iterator();
                // download all video files in the list of video file names
                while (iter.hasNext() && downloadSuccess) {
                  String videoFile = iter.next();
                  // http://stackoverflow.com/questions/6045377/how-to-insert-20-in-place-of-space-in-android
                  String urlFileName = videoFile.replaceAll(" ", "%20");
                  
                  String urlAsset = baseUrl + "/asset/"+urlFileName;
                  urlAsset = urlAsset.replaceAll("(?<!(http:|https:))//", "/");              
//                  urlAsset = urlAsset.concat(paramToken);
                  Log.i("SyncAdapter", "Downloading from "+urlAsset);
                  
                  HttpURLConnection urlConn = (HttpURLConnection) new URL(urlAsset).openConnection();
                  // make connection time out after 10 seconds
                  urlConn.setConnectTimeout(10000);           
                  
                  // checking response to see if it worked ok
                  if (urlConn.getResponseCode() == HttpURLConnection.HTTP_OK){
                    Log.i("SyncAdapter","Status code: "+urlConn.getResponseCode()+" and status line: "+urlConn.getResponseMessage());
                    try {
                      InputStream in = new BufferedInputStream(urlConn.getInputStream());                
                      downloadSuccess = storeInputStreamInFile(in, videoFile,urlConn.getContentLength());
                      }
                      finally {                    
                        urlConn.disconnect();
                      }
                  } else {
                    urlConn.disconnect();
                  }
                }
                
                
                if (downloadSuccess) {
                return "Download success";
              } else {
                return "Download failure";
              }
          } catch (IOException e) {
            e.printStackTrace();
            return "Download failure";
            }
        }

        @Override
        protected void onPostExecute(String result) {
            super.onPostExecute(result);
            //Do anything with response..
            textView1.setText(result);

        }
        
        // http://stackoverflow.com/questions/10752919/how-can-i-convert-inputstream-data-to-string-in-android-soap-webservices
      private String convertStreamToString(InputStream is) {
          BufferedReader reader = new BufferedReader(new InputStreamReader(is));
          StringBuilder sb = new StringBuilder();

          String line = null;
          try {
              while ((line = reader.readLine()) != null) {
                  sb.append(line + "\n");
              }
          } catch (IOException e) {
              e.printStackTrace();
          } finally {
              try {
                  is.close();
              } catch (IOException e) {
                  e.printStackTrace();
              }
          }
          return sb.toString();
      }
      
      // this will be useful so that you can show a tipical 0-100%
        // progress bar
      private boolean storeInputStreamInFile(InputStream input, String fileName, int lengthOfFile) {
        int count;
            try {
              File videoFile = new File(Environment.getExternalStorageDirectory().toString() +"/chat/" +fileName);
              
                // Output stream
                OutputStream output = new FileOutputStream(videoFile);

                byte data[] = new byte[8192];
                long downloadedSize = 0;
                int percentDownloaded;
                int previous = -1;
                
                Log.i("SyncResources", "Downloading to file: "+videoFile.getAbsolutePath());

                while ((count = input.read(data)) > 0) {
                  downloadedSize += count;
                    //this is where you would do something to report the prgress, like this maybe
                  percentDownloaded = (int) ((downloadedSize * 100) / lengthOfFile);
                  if (percentDownloaded % 10 == 0 && percentDownloaded > previous) {
                    Log.d("Progress: ","downloaded "+percentDownloaded+" percent of "+ lengthOfFile + " Bytes");
                    previous = percentDownloaded;
                  }

                    // writing data to file
                    output.write(data, 0, count);
                }

                // flushing output
                output.flush();

                // closing streams
                output.close();
                input.close();
                
                Log.i("SyncResources", "Finished downloading to file: "+videoFile.getAbsolutePath());
                
                return true;
            } catch (Exception e) {
                Log.e("Error: ", e.getMessage());
                return false;
            }
      }
    }
    
    private ArrayList<String> convertJSONtoStringArray (JSONArray jsonArray) {
      ArrayList<String> stringArray = new ArrayList<String>();
      for(int i = 0, count = jsonArray.length(); i< count; i++)
      {
          try {
              stringArray.add((String)jsonArray.get(i));
          }
          catch (JSONException e) {
              e.printStackTrace();
          }
      }
      return stringArray;
    }
}
Java Source Code List
