title: Android format date to MM-DD-YYYY from Datepicker
body: <p>I have a datepicker. My app is pushing a notification. I want to display the date in 01-07-2013 MM-dd-yyyy format. Please check my code below:</p>
  
  <pre><code> //---Button view---
      Button btnOpen = ( Button ) findViewById( R.id.btEventDone );
      btnOpen.setOnClickListener( new View.OnClickListener() {
  
          public void onClick(View v) {  
  
              String strT = title.getText().toString();
              String strDes = description.getText().toString();
  
              // check if user did not input anything
              if( strT.isEmpty() || strDes.isEmpty() ){
  
                  Toast.makeText( getBaseContext(), "You have blank fields!", Toast.LENGTH_SHORT ).show();
  
              }
              else{
  
              //---use the AlarmManager to trigger an alarm---
              AlarmManager alarmManager = ( AlarmManager ) getSystemService( ALARM_SERVICE );                 
  
              //---get current date and time---
              Calendar calendar = Calendar.getInstance();       
  
              //---sets the time for the alarm to trigger---
              calendar.set( Calendar.YEAR, date.getYear() );
              calendar.set( Calendar.MONTH, date.getMonth() );
              calendar.set( Calendar.DAY_OF_MONTH, date.getDayOfMonth() );                 
              calendar.set( Calendar.HOUR_OF_DAY, time.getCurrentHour() );
              calendar.set( Calendar.MINUTE, time.getCurrentMinute() );
              calendar.set( Calendar.SECOND, 0 );
  
              //---PendingIntent to launch activity when the alarm triggers---                    
              Intent i = new Intent( CalendarEvent.this, DisplayNotification.class );
  
              year = calendar.get( Calendar.YEAR );
              month = calendar.get( Calendar.MONTH );
              day = calendar.get( Calendar.DAY_OF_MONTH );
  
              hour = calendar.get( Calendar.HOUR );
              minute = calendar.get( Calendar.MINUTE );
  
              Date d = new Date(year, month, day);
              SimpleDateFormat dateFormatter = new SimpleDateFormat(
                              "MM-dd-yyyy");
              String strDate = dateFormatter.format(d);
  
              String strTitle = title.getText().toString();
              String strDescription = description.getText().toString();
              strDate = String.valueOf( month ) + "-" + String.valueOf( day ) + "-" + String.valueOf( year );
  
              StringBuilder sb = new StringBuilder();
              if(hour&gt;=12){                      
                sb.append(hour-12).append( ":" ).append(minute).append(" PM");
              }else{
                sb.append(hour).append( ":" ).append(minute).append(" AM");
              }
              String strTime = sb.toString();
  
  
              //---assign an ID of 1---
              i.putExtra( "NotifID", notifID ); 
              i.putExtra( "Title", strTitle );
              i.putExtra( "Description", strDescription );
              i.putExtra( "Date", strDate  );
              i.putExtra( "Time", strTime );
  
              PendingIntent displayIntent = PendingIntent.getActivity(
                  getBaseContext(), notifID, i, 0 );               
  
  
              //---sets the alarm to trigger---
              alarmManager.set( AlarmManager.RTC_WAKEUP, 
                  calendar.getTimeInMillis(), displayIntent );
              finish();
          }
  
          }
      }); 
  
  }
  </code></pre>
  
  <p><strong>AlarmDetails:</strong></p>
  
  <pre><code>@Override
  public void onCreate(Bundle savedInstanceState) 
  {
      super.onCreate(savedInstanceState);
      setContentView(R.layout.alarmdetails);  
  
      //---look up the notification manager service---
      NotificationManager nm = ( NotificationManager ) 
          getSystemService( NOTIFICATION_SERVICE );
  
      title = ( EditText ) findViewById ( R.id.etDetailTitle );
      description = ( EditText ) findViewById ( R.id.etDetailDescription );
      date = ( EditText ) findViewById ( R.id.etDetailDate );
      time = ( EditText ) findViewById ( R.id.etDetailTime );
      done = ( Button ) findViewById ( R.id.btnAlarmDone );
  
      done.setOnClickListener(new View.OnClickListener() {
  
          public void onClick(View v) {
              // TODO Auto-generated method stub
              finish();
          }
      });
  
      //---cancel the notification---
      nm.cancel( getIntent().getExtras().getInt( "NotifID" ) ); 
  
  
      String strTitle = getIntent().getExtras().getString( "Title" );
      String strDescription = getIntent().getExtras().getString( "Description" );
      strDate = getIntent().getExtras().getString( "Date" );
      String strTime = getIntent().getExtras().getString( "Time" );
      title.setText( strTitle );
      description.setText( strDescription );
      date.setText( strDate );
      time.setText( strTime );
  
  
  }
  </code></pre>
  
  <p><strong>DisplayNotification:</strong></p>
  
  <pre><code>@Override
  public void onCreate(Bundle savedInstanceState) {
      super.onCreate(savedInstanceState);
  
  //---get the notification ID for the notification; 
  // passed in by the NotifyActivity---
  int notifID = getIntent().getExtras().getInt( "NotifID" );
  String strTitle = getIntent().getExtras().getString( "Title" );
  String strDescription = getIntent().getExtras().getString( "Description" );
  String strDate = getIntent().getExtras().getString( "Date" );
  String strTime = getIntent().getExtras().getString( "Time" );
  
  //---PendingIntent to launch activity if the user selects 
  // the notification---
  Intent i = new Intent( DisplayNotification.this, AlarmDetails.class );
  i.putExtra( "NotifID", notifID );  
  i.putExtra( "Title", strTitle );
  i.putExtra( "Description", strDescription );
  i.putExtra( "Date", strDate );
  i.putExtra( "Time", strTime );
  
  PendingIntent detailsIntent = 
      PendingIntent.getActivity(this, 0, i, 0);
  
  NotificationManager nm = ( NotificationManager )
      getSystemService( NOTIFICATION_SERVICE );
  Notification notif = new Notification(
      R.drawable.ic_launcher, 
      "iHealthFirst: Notification!",
      System.currentTimeMillis() );
  
  CharSequence from = "iHealthFirst - New Notification";
  CharSequence message = "This is your alert, click to view";        
  notif.setLatestEventInfo(this, from, message, detailsIntent);
  notif.flags = Notification.FLAG_INSISTENT;
  notif.defaults |= Notification.DEFAULT_SOUND;
  
  //---100ms delay, vibrate for 250ms, pause for 100 ms and
  // then vibrate for 500ms---
  notif.vibrate = new long[] { 100, 250, 100, 500};        
  nm.notify( notifID, notif );
  
  //---destroy the activity---
  finish();
  }
  </code></pre>
  
  <p>My current app only display in this format M-d-yyyy. I have read that we should use SimpleDateFormat, but I don't know how to use it in my app. Can anyone help? Thanks.</p>