title: Errors Fatal Exception on Two activities
body: <pre><code>enter code here
  
    05-31 00:26:46.295: ERROR/AndroidRuntime(4111):     at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2685)
    05-31 00:32:08.465: ERROR/AndroidRuntime(4301): FATAL EXCEPTION: main
    05-31 00:32:08.465: ERROR/AndroidRuntime(4301): java.lang.RuntimeException: Unable to start activity ComponentInfo{yaraby.y/yaraby.y.yarab}: java.lang.NullPointerException
    05-31 00:32:08.465: ERROR/AndroidRuntime(4301):     at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2669)
   05-31 00:32:08.465: ERROR/AndroidRuntime(4301):     at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2685)
   05-31 00:32:08.465: ERROR/AndroidRuntime(4301):     at a ndroid.app.ActivityThread.access$2300(ActivityThread.java:126)
   05-31 00:32:08.465: ERROR/AndroidRuntime(4301):     at android.app.ActivityThread$H.handleMessage(ActivityThread.java:2038)
    05-31 00:32:08.465: ERROR/AndroidRuntime(4301):     at android.os.Handler.dispatchMessage(Handler.java:99)
    05-31 00:32:08.465: ERROR/AndroidRuntime(4301):     at android.os.Looper.loop(Looper.java:123)
   05-31 00:32:08.465: ERROR/AndroidRuntime(4301):     at android.app.ActivityThread.main(ActivityThread.java:4633)
   05-31 00:32:08.465: ERROR/AndroidRuntime(4301):     at java.lang.reflect.Method.invokeNative(Native Method)
   05-31 00:32:08.465: ERROR/AndroidRuntime(4301):     at java.lang.reflect.Method.invoke(Method.java:521)
   05-31 00:32:08.465: ERROR/AndroidRuntime(4301):     at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:858)
    05-31 00:32:08.465: ERROR/AndroidRuntime(4301):     at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:616)
    05-31 00:32:08.465: ERROR/AndroidRuntime(4301):     at dalvik.system.NativeStart.main(Native Method)
   05-31 00:32:08.465: ERROR/AndroidRuntime(4301): Caused by: java.lang.NullPointerException
   05-31 00:32:08.465: ERROR/AndroidRuntime(4301):     at yaraby.y.yarab.onCreate(yarab.java:92)
   05-31 00:32:08.465: ERROR/AndroidRuntime(4301):     at android.app.Instrumentation.callActivityOnCreate(Instrumentation.java:1047)
    05-31 00:32:08.465: ERROR/AndroidRuntime(4301):     at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2633)
    05-31 00:32:08.465: ERROR/AndroidRuntime(4301):     ... 11 more
  </code></pre>
  
  <p>Yaraby Code </p>
  
  <pre><code>enter code here
   public class yaraby extends Activity {
  /** Called when the activity is first created. */
  String sentence,sentence1, modifiedSentence;;
  EditText inputfld, txt;
  TextView Text;
  Button Enter, Connect, next;
  Socket clientSocket;
  
  DataOutputStream outToServer;
  BufferedReader inFromServer ;
  
  @Override
  public void onCreate(Bundle savedInstanceState) {
      super.onCreate(savedInstanceState);
      setContentView(R.layout.main);
      inputfld=(EditText)findViewById(R.id.input);
      Text=(TextView)findViewById(R.id.view);
      Enter=(Button)findViewById(R.id.enter);
      Connect=(Button)findViewById(R.id.connect);
  
      Text.append( "\n about to create a socket");    
  
  
      txt=(EditText)findViewById(R.id.txt);
      next = (Button) findViewById(R.id.Button01);   
  
      next.setOnClickListener(new OnClickListener() {
  
          @Override
          public void onClick(View v) {
              try{
                  Text.append("PPPPP");
              Intent i = new Intent(yaraby.this, yarab.class);
  
              startActivity(i);
              Text.append("OPS");
              }
              catch(Error e){
                  Log.e("aaaaaaaaaaaaaaaaaaaaaaaaaaaaaa", e.getMessage());
                  Text.append("ofa7ay");
              }
  
          }});
  
                    }
  
  
  
  
  
  
  public void appendText(View view){
      Text.append( "\n  In chat ");
  
      try{
  
  
      sentence=inputfld.getText().toString();
      sentence1="ingyyyy";
      Text.append( "\n  DataStream creating");        
      outToServer.writeBytes(sentence);
      outToServer.writeBytes(sentence1);
      Thread.sleep(1000);
      modifiedSentence = inFromServer.readLine(); 
      Text.append(modifiedSentence);
      inputfld.setText(null);
  
      }
      catch(Exception modifiedsentence){
          Text.append("Exception");
      }
  
  
  }
  
  
  public void connect(View view){
      try{
          clientSocket= new Socket("192.168.1.6",54611); 
          Text.append( "\n created a socket");
          outToServer = new DataOutputStream(clientSocket.getOutputStream());
          Text.append( "\n created a datastream");
          inFromServer = new BufferedReader(new InputStreamReader(clientSocket.getInputStream()));
          Text.append( "\n created a bufferReader");
          outToServer = new DataOutputStream(clientSocket.getOutputStream());
  
  
  
      }catch(Exception e){
          System.out.println("Error");
      }
     }
  </code></pre>
  
  <p>yarab code </p>
  
  <pre><code>enter code here
  package yaraby.y;
  
             public class yarab extends MapActivity
  
     {
  Socket clientSocket;
  TextView Text; 
  private MapView mapView;
  private MapController mc;
  DataOutputStream outToServer;            
  BufferedReader inFromServer ;
   Button start;
  int error = 50;
  GeoPoint p, p2;
  List&lt;Overlay&gt; mapOverlays;
  Drawable drawable, drawable2;
  HelloItemizedOverlay itemizedOverlay, itemizedOverlay2;
  
  LocationManager locationManager;
  
  /** Called when the activity is first created. */
  
  @Override
  public void onCreate(Bundle savedInstanceState)
  
  {
  
          super.onCreate(savedInstanceState);
  
          setContentView(R.layout.main);
  
          /* Use the LocationManager class to obtain GPS locations */
  
          LocationManager mlocManager = (LocationManager) getSystemService(Context.LOCATION_SERVICE);
  
          LocationListener mlocListener = new MyLocationListener();
  
          mlocManager.requestLocationUpdates(LocationManager.GPS_PROVIDER, 0,
                  0, mlocListener);
          mapView = (MapView) findViewById(R.id.mapView);
  
          // enable Street view by default
          mapView.setStreetView(true);
  
          // enable to show Satellite view
          mapView.setSatellite(true);
  
          // enable to show Traffic on map
          // mapView.setTraffic(true);
          mapView.setBuiltInZoomControls(true);
  
  
  
  
  
  
          mc = mapView.getController();
  
          mc.setZoom(12);
          addOverLays();
            start= (Button) findViewById(R.id.start);   
  
  
                  }
  
  public void addOverLays() {
      String[] coordinates = { "31.216487288475037", "29.932637214660645",
              "30.084123015403748", "51.5002", "-0.1262",
              "31.337149143218994" };
  
      double lat = 29.98739718380868, lat2 = 29.987810254096985;
      double log = 31.442527770886084, log2 = 31.44258677959442;
      p = new GeoPoint((int) (lat * 1E6), (int) (log * 1E6));
      p2 = new GeoPoint((int) (lat2 * 1E6 ), (int) (log2 * 1E6 ));
      p3 = new GeoPoint((int) (lat3 * 1e6), (int) (log3 * 1e6));
      p4 = new GeoPoint((int) (lat4 * 1e6), (int) (log4 * 1e6));
      p5 = new GeoPoint((int) (lat14* 1e6), (int) (log14 * 1e6));
      p6 = new GeoPoint((int) (lat8 * 1e6), (int) (log8 * 1e6));
      p7 = new GeoPoint((int) (t1* 1e6), (int) (log15 * 1e6));
      p8 = new GeoPoint((int) (lat5 * 1e6), (int) (log5 * 1e6));
      p9 = new GeoPoint((int) (lat6 * 1e6), (int) (log6 * 1e6));
      p10=new GeoPoint( (int) (t4 * 1e6), (int) (log12 * 1e6));
      p11=new GeoPoint( (int) (t2* 1e6), (int) (log14 * 1e6));
      p12=new GeoPoint( (int) (t3* 1e6), (int) (log5 * 1e6));
      p13=new GeoPoint( (int) (t5* 1e6), (int) (log12 * 1e6));
      p14=new GeoPoint( (int) (t6* 1e6), (int) (log11 * 1e6));
      p15=new GeoPoint( (int) ((t6+t1)/2* 1e6), (int) (log3 * 1e6));
      p15=new GeoPoint( (int) (t3* 1e6), (int) (log11 * 1e6));
      p16=new GeoPoint( (int) (lat15* 1e6), (int) (log15 * 1e6));
      p17=new GeoPoint( (int) (lat13* 1e6), (int) (log13 * 1e6));
      p18=new GeoPoint( (int) (lat9* 1e6), (int) (log9 * 1e6));
      p19=new GeoPoint( (int) (lat10* 1e6), (int) (log10 * 1e6));
      p20=new GeoPoint( (int) (lat11* 1e6), (int) (log11 * 1e6));
      p21=new GeoPoint( (int) (lat12* 1e6), (int) (log12 * 1e6));
      mapOverlays = mapView.getOverlays();
      drawable = this.getResources().getDrawable(R.drawable.wit);
      drawable2 = this.getResources().getDrawable(R.drawable.ballon);
  
      itemizedOverlay = new HelloItemizedOverlay(drawable, this);
      itemizedOverlay2 = new HelloItemizedOverlay(drawable2, this);
  
      OverlayItem overlayitem = new OverlayItem(p, "Cairo", " over1");
      OverlayItem over2 = new OverlayItem(p2, "ulm", "over2");
  
  
      itemizedOverlay.addOverlay(overlayitem);
  
      mapOverlays.add(itemizedOverlay);
  
      itemizedOverlay2.addOverlay(over2);
      mapOverlays.add(itemizedOverlay2);
  
  
      mc.setZoom(17);
  
  
  
  }
  
  
  
  
  
  public void Location(){
  
  
  
      LocationManager myLocationManager = (LocationManager)getSystemService(Context.LOCATION_SERVICE);
  
  
      LocationListener mlocListener1 = new MyLocationListener();
  
      LocationManager mlocManager1 = null;
      mlocManager1.requestLocationUpdates(LocationManager.GPS_PROVIDER, 0,
              0, mlocListener1);
          //  Get the current location in start-up
            GeoPoint initGeoPoint = new GeoPoint((int)(myLocationManager.getLastKnownLocation(LocationManager.GPS_PROVIDER)
         .getLatitude()*1000000),(int)(myLocationManager.getLastKnownLocation(LocationManager.GPS_PROVIDER).getLongitude()*1000000));
         mc.animateTo(initGeoPoint);
      mc.setZoom(16);
  
      drawable21 = this.getResources().getDrawable(R.drawable.ggg);
      itemizedOverlay21 = new HelloItemizedOverlay(drawable21,this);
      OverlayItem over21 = new OverlayItem(initGeoPoint, "offff", "over21");
  
      itemizedOverlay21.addOverlay(over21);
      mapOverlays.add(itemizedOverlay21);
  }
  
  
  /* Class My Location Listener */
  
  public class MyLocationListener implements LocationListener
  
  {
  
      @Override
      public void onLocationChanged(Location loc)
  
      {
  
          GeoPoint point = new GeoPoint((int) (loc.getLatitude() * 1E6),
                  (int) (loc.getLongitude() * 1E6));
  
  
  
          String Text = "My current location is: " +
  
          "Latitud =" + loc.getLatitude()+ 
  
          "Longitud =" +loc.getLongitude() ;
  
          Toast.makeText(getApplicationContext(),
  
          Text,
  
          Toast.LENGTH_SHORT).show();
  
  
      mc.animateTo(point);
  
  
      }
  
  
      private Resources getResources() {
          // TODO Auto-generated method stub
          return null;
      }
  
  
      public void onProviderDisabled(String provider)
  
      {
  
          Toast.makeText(getApplicationContext(),
  
          "Gps Disabled",
  
          Toast.LENGTH_SHORT).show();
  
      }
  
      public void onProviderEnabled(String provider)
  
      {
  
          Toast.makeText(getApplicationContext(),
  
          "Gps Enabled",
  
          Toast.LENGTH_SHORT).show();
  
      }
  
      public void onStatusChanged(String provider, int status, Bundle extras)
  
      {
  
      }
  
      protected boolean isRouteDisplayed() {
          return false;
      }
  
  }/* End of Class MyLocationListener */
  
  @Override
  protected boolean isRouteDisplayed() {
      // TODO Auto-generated method stub
      return false;
  }
  
             }
  </code></pre>