Android Open Source - honsProjSockets Socket Transfer

• Back to Development/socket  ↑

From Project

Back to project page honsProjSockets.

License

The source code is released under:

GNU General Public License

Java Source Code

package com.heeere.android.dnssdtuto;
//This is main activity class in an android application that registers a jmdns service
//and transfers files between registered devices
//matthew watkins
//August 2013/*from w w  w. j  av  a  2  s  .  co m*/

import java.io.File;
import android.app.Activity;
import android.net.wifi.WifiManager;
import android.os.Bundle;
import android.os.Environment;
import android.view.Gravity;
import android.view.View;
import android.view.View.OnClickListener;
import android.widget.Button;
import android.widget.EditText;
import android.widget.TextView;

public class SocketTransfer extends Activity {

  //instance variables for handling jmdns
    private android.net.wifi.WifiManager.MulticastLock lock;
    private android.os.Handler handler = new android.os.Handler();
    private EditText addressText;
    private TextView downloadText, uploadText;
    private int ipAddress;
    private ServerSocketHandler FileServer;
    private File path, pathFiles;
    private SocketClient getFile;
  private boolean started = false;
  
  //integer that determines the end of file technique
  //1 means file size, 2 means end of file marker
  private static int PROTOCOL_CHOICE = 1;
    
    //called when the activity is first created.
    @Override
    public void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.main);
        
        //acquire lock for device discovery
        WifiManager wifi = (WifiManager)
            getSystemService(android.content.Context.WIFI_SERVICE);
        
        lock = wifi.createMulticastLock("mylockthereturn");
        lock.setReferenceCounted(true);
        lock.acquire();
        
        ipAddress = wifi.getConnectionInfo().getIpAddress();
        if(isExternalStorageWritable()){
      File parentpath = (Environment.getExternalStoragePublicDirectory(Environment.DIRECTORY_DOWNLOADS));
      path = new File(parentpath, "Socket_Test_Folder");
      pathFiles = new File(parentpath, "root");
    }
    else{
      path = getFilesDir();
    }
    path.mkdirs();
    System.out.println(path);
                
        //UI Features-----------------------------------------------------
    //----------------------------------------------------------------
        //enter device name textbox
       
        addressText = (EditText) findViewById( R.id.address_string);
        
        downloadText = (TextView) findViewById( R.id.text2);
        
        //register your service button ----------------------------
        Button registerButton = (Button) findViewById (R.id.button1);
        registerButton.setOnClickListener(new OnClickListener() {
           
      @Override
      public void onClick(View arg0) {
        if(!started){
          started=true;
          
          FileServer = new ServerSocketHandler(pathFiles, uploadText, PROTOCOL_CHOICE);
          FileServer.start();
          notifyUser("fileserver started");
          
          showIP();  
        }

      }
    });      
        
        //get db file button  ------------------------------
        Button getFileButton = (Button) findViewById (R.id.button2);
        getFileButton.setOnClickListener(new OnClickListener() {          
      @Override
      public void onClick(View arg0) {
  
        String tempAddress = addressText.getText().toString();

        
        String [] files = { "100mb number 1.mp3"};
        

        
        getFile = new SocketClient(tempAddress, path, files, 5000, downloadText, PROTOCOL_CHOICE);
        
        getFile.start();
        
      } 
    });       
    //--------------------------------------------------------------------------------------------------------
    //--------------------------------------------------------------------------------------------------------
        
          
    }   

  
  // Checks if external storage is available for read and write
  private boolean isExternalStorageWritable() {
      String state = Environment.getExternalStorageState();
      if (Environment.MEDIA_MOUNTED.equals(state)) {
          return true;
      }
      return false;
  }
  
  //method to print out the ip address of current device
  private void showIP(){
    
    //convert integer ip address into a string
    String address =  (ipAddress & 0xFF ) + "." +
                 ((ipAddress >> 8 ) & 0xFF) + "." +
                 ((ipAddress >> 16 ) & 0xFF) + "." +
                 ( (ipAddress >> 24 ) & 0xFF);
    
    notifyUser("IP Address: " + address);
  }

  //print text to screen
  private void notifyUser(final String msg) {
      
      handler.postDelayed(new Runnable() {
            public void run() {
              TextView t = (TextView)findViewById(R.id.text);
              t.setGravity(Gravity.TOP);
              t.setText(t.getText()+"\n-"+msg);
              }
            }, 1);
    }
  
  //print text to screen
  public void notifyUserDownload(final String msg) {
      
      handler.postDelayed(new Runnable() {
            public void run() {
              TextView t = (TextView)findViewById(R.id.text2);
              t.setText(msg);
              }
            }, 1);
    }

  
    @Override
    protected void onStart() {
        super.onStart(); 
    }

    @Override
    //The method to remove the jmdns services when the application ends
    protected void onDestroy() {

      //close server socket connection
      if(FileServer != null)
        FileServer.closeSocket();

      super.onStop();
    }
}

Java Source Code List

• Back to Development/socket  ↑