Android Open Source - msg-plus Msg Run

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License

The source code is released under:

Eclipse Public License - v 1.0 THE ACCOMPANYING PROGRAM IS PROVIDED UNDER THE TERMS OF THIS ECLIPSE PUBLIC LICENSE ("AGREEMENT"). ANY USE, REPRODUCTION OR DISTRIBUTION OF THE PROGRAM CONSTITUTES RECI...

Java Source Code

package com.example.msg;
//w w w  . j  av  a2 s .  c o m
import java.util.ArrayList;

import android.net.Uri;
import android.os.Bundle;
import android.app.Activity;
import android.app.AlertDialog;
import android.content.ContentResolver;
import android.content.DialogInterface;
import android.content.Intent;
import android.database.Cursor;
import android.text.InputType;
import android.view.KeyEvent;
import android.view.Menu;
import android.view.MenuItem;
import android.view.View;
import android.view.View.OnClickListener;
import android.widget.AdapterView;
import android.widget.AdapterView.OnItemClickListener;
import android.widget.ArrayAdapter;
import android.widget.Button;
import android.widget.EditText;
import android.widget.ListView;
import android.widget.Toast;

public class MsgRun extends Activity implements OnItemClickListener {
  
  Button compose;
  ListView listview;
  int password;
  int def_pass = 1234;

  @Override
  protected void onCreate(Bundle savedInstanceState) {    
    super.onCreate(savedInstanceState);
    setContentView(R.layout.activity_msg_run);
    refresh();
    //try{
      //InputStream instream = openFileInput("password.txt");//open the text file for reading
            // if file the available for reading
            //if (instream != null) {
              showDialog();
            //}
            //else
            //{
            //  setPassword();
            //}
    //}
    //catch (IOException e) {
      //e.printStackTrace();
    //}
    
    
    compose = (Button)findViewById(R.id.button1);
    //listview = (ListView)findViewById(R.id.listView1);
    
    //final Context context = this;
    
    
    compose.setOnClickListener(new OnClickListener() {    
      
      
      @Override
      public void onClick(View arg0) {
        // TODO Auto-generated method stub
        Intent i = new Intent();
        i.setClassName("com.example.msg", "com.example.msg.Compose");
        startActivity(i);
        
      }
    });
  }
  
  
  public void showDialog()
  {

    AlertDialog.Builder alert = new AlertDialog.Builder(this);
    final AlertDialog.Builder realert = new AlertDialog.Builder(this);

        alert.setTitle("Enter Pin to open."); 
        alert.setMessage("Pin:"); 

        // Set an EditText view to get user input 
        final EditText input = new EditText(this);
        input.setInputType(InputType.TYPE_CLASS_NUMBER);
        input.setInputType(InputType.TYPE_TEXT_VARIATION_PASSWORD);
        alert.setView(input);
        alert.setCancelable(false);
        alert.setPositiveButton("Go!", new DialogInterface.OnClickListener() {
        public void onClick(DialogInterface dialog, int whichButton) {
            try {
                password = Integer.parseInt(input.getText().toString());
                if(password == def_pass)
                {
                  //code
                  dialog.dismiss();
                }
                else
                {
                    String message = "The pin you have entered is incorrect." + " \n \n" + "Please try again!";
                    
                    realert.setTitle("Error");
                    realert.setMessage(message);
                    realert.setNegativeButton("Cancel", new DialogInterface.OnClickListener() {
                        public void onClick(DialogInterface dialog, int whichButton) {
                            // Canceled.
                            finish();
                          }
                        });
                    realert.setPositiveButton("Retry", new DialogInterface.OnClickListener() {
                        @Override
                       public void onClick(DialogInterface dialog, int id) {
                            showDialog();
                       }
                   });
                    realert.create().show();

                }
                
            } catch(Exception e) {
               System.out.println("Exception: " + e);
            } 

          // Do something with value!
        }
        });

        alert.setNegativeButton("Cancel", new DialogInterface.OnClickListener() {
          public void onClick(DialogInterface dialog, int whichButton) {
            // Canceled.
            finish();
          }
        });
        alert.show();
        

  }
  
  public boolean onKeyDown(int keyCode, KeyEvent event) {
        if (keyCode == KeyEvent.KEYCODE_BACK) {
            // Show your Alert Box here
          finish();
        }
        return false;
    }
  
  //starting array list
    ArrayList<String> smsList = new ArrayList<String>();
    
  public void onItemClick( AdapterView<?> parent, View view, int pos, long id ) 
  {
    try 
    {
        String[] splitted = smsList.get( pos ).split("\n"); 
      String sender = splitted[0];
      String decMsg = "";
      for ( int i = 1; i < splitted.length; ++i )
      {
          decMsg += splitted[i];
      }
      
      Toast.makeText( this, sender+"\n"+decMsg, Toast.LENGTH_LONG ).show();
    } 
    catch (Exception e) 
    {
      e.printStackTrace();
    }
  }
  
  public void refresh()
  {
    ContentResolver contentResolver = getContentResolver();
    
    String[] colList = {SMSReciever.ADDRESS, SMSReciever.BODY};
    String[] argList = {"cryptsms%"};
    Cursor cursor = contentResolver.query( Uri.parse( "content://sms/inbox" ), colList, "body LIKE ?", argList, "DATE");

    int indexBody = cursor.getColumnIndex( SMSReciever.BODY);
    int indexAddr = cursor.getColumnIndex( SMSReciever.ADDRESS );
    //int indexDate = cursor.getColumnIndex(SMSReciever.DATE );
    
    if ( indexBody < 0 || !cursor.moveToFirst() ) return;
    smsList.clear();
    
    
    do
    {      
      //code to link crypt class
      //String str = cursor.getString( indexAddr ) + "\n" + cursor.getString( indexBody );
      String encMsg = cursor.getString( indexBody ).substring(8);
      //decrypting
      RSA rsa = new RSA(1024);
      String decMsg = rsa.decrypt(encMsg);
      
      /*BigInteger cipherText = new BigInteger(encMsg.getBytes());
       * 
      RSA rsa = new RSA(1024);
      BigInteger plaintext = rsa.decrypt(cipherText);
          String decMsg = new String(plaintext.toByteArray());
          //adding to listview*/
      String str = cursor.getString( indexAddr ) + "\n" + decMsg;
      //smsList.setTextColour();
      smsList.add( str );      
    }
    while( cursor.moveToNext());    
    
    ListView listview = (ListView) findViewById( R.id.listView1);
    listview.setAdapter( new ArrayAdapter<String>( this, android.R.layout.simple_list_item_1, smsList) );
    listview.setOnItemClickListener( this );
  }
  
  public void about()
  {
    AlertDialog.Builder builder2 = new AlertDialog.Builder(this);
      builder2.setTitle("About Msg+ V 1.0");
      builder2.setMessage("Msg+ is a [concept] secured messaging app which ensures security over the network pass-through.\n\n# Nishant Kambhatla\n(VIT University Chennai)");
      builder2.setCancelable(true);
      builder2.setNeutralButton(android.R.string.ok,
              new DialogInterface.OnClickListener() {
          public void onClick(DialogInterface dialog, int id) {
              dialog.cancel();
          }
      });

      AlertDialog alert12 = builder2.create();
      alert12.show();
  }

  
  //set password
  /*public void setPassword()
  {
    AlertDialog.Builder alert3 = new AlertDialog.Builder(this);
            
        alert3.setTitle("Choose Pin."); 
        alert3.setMessage("Choose a Pin:"); 

        // Set an EditText view to get user input 
        final EditText input = new EditText(this);
        input.setInputType(InputType.TYPE_CLASS_NUMBER);
        //input.setInputType(InputType.TYPE_TEXT_VARIATION_PASSWORD);
        alert3.setView(input);
        //alert3.setCancelable(false);
        alert3.setNeutralButton("Confirm", new DialogInterface.OnClickListener() {
        public void onClick(DialogInterface dialog, int whichButton) {
          try {
              OutputStreamWriter out=new OutputStreamWriter(openFileOutput("password.txt",MODE_PRIVATE));
              String pwd = input.getText().toString();
              out.write(pwd);
              out.close();
              input.setText("");
                //Toast.makeText(this,"Password Created !",Toast.LENGTH_LONG).show();
                }
            catch (java.io.IOException e) {
            //do something if an IOException occurs.
            //Toast.makeText(this,"Sorry! Password could't be added",Toast.LENGTH_LONG).show();
            e.printStackTrace();
            }
        }
        });
        
       }
    
  
  public String getPassword()
  {
    String text = new String();
      
      
       try {
              // open the file for reading we have to surround it with a try
          
              InputStream instream = openFileInput("password.txt");//open the text file for reading
              
              // if file the available for reading
              if (instream != null) {                
                  
                // prepare the file for reading
                InputStreamReader inputreader = new InputStreamReader(instream);
                BufferedReader buffreader = new BufferedReader(inputreader);
                 
                String pwd=null;
                //We initialize a string "line" 
                
              pwd = buffreader.readLine();
              text = pwd;
              }
              }    
                  
               //now we have to surround it with a catch statement for exceptions
              catch (IOException e) {
                  e.printStackTrace();
              }
              return text;
  }
  
  
  public void settings()
  {
    setPassword();
  }*/

  @Override
  public boolean onCreateOptionsMenu(Menu menu) {
    // Inflate the menu; this adds items to the action bar if it is present.
    getMenuInflater().inflate(R.menu.activity_msg_run, menu);
    return true;
  }
  
  public boolean onOptionsItemSelected(MenuItem item) {
      // Handle item selection
      switch (item.getItemId()) {
          case R.id.item1:
              refresh();
              return true;
          case R.id.item2:
              about();
              return true;
          /*case R.id.item3:
            settings();
            return true;*/
          default:
              return super.onOptionsItemSelected(item);
      }
  }

}

Java Source Code List

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