title: NullPointerException when using onFling Gesture
body: <p>im catching a NullPointerException in onFling method...
  This doesnt happen always..</p>
  
  <pre><code>    class MyGestureDetector extends SimpleOnGestureListener 
      {
          @Override
          public boolean onFling(MotionEvent e1, MotionEvent e2, float velocityX, float velocityY) 
          {
  
  
              try
              {
                  if(e1.getX() &gt; e2.getX() &amp;&amp; (e1.getX() - e2.getX()) &gt; SWIPE_MIN_DISTANCE ) 
                  {
          Log.i("Fling Gesture ","Going Right...Dec");
          Intent i = new Intent(nov.this, dec.class);
          startActivity(i);
          finish();
                  }
      else if (e1.getX() &lt; e2.getX() &amp;&amp; (e2.getX() - e1.getX()) &gt; SWIPE_MIN_DISTANCE ) 
                  {
      Log.i("Fling Gesture ","Going Left...OCT");
  
      Intent i = new Intent(nov.this, oct.class);
                      i.setFlags(Intent.FLAG_ACTIVITY_NO_ANIMATION);
                      overridePendingTransition(android.R.anim.slide_out_right,android.R.anim.slide_in_left);
  
                      startActivity(i);
                      finish();
                  }
  
              } catch (Exception e) 
              {
              }
              return true;
          }
  </code></pre>
  
  <p>N</p>
  
  <p>Heres my log.....</p>
  
  <pre><code>09-07 10:44:09.584: WARN/System.err(8721): java.lang.NullPointerException
  09-07 10:44:09.584: WARN/System.err(8721):     at com.MarKal11.KAL$MyGestureDetector.onFling(KAL.java:70)
  09-07 10:44:09.594: WARN/System.err(8721):     at android.view.GestureDetector.onTouchEvent(GestureDetector.java:568)
  09-07 10:44:09.594: WARN/System.err(8721):     at com.MarKal11.KAL$1.onTouch(KAL.java:114)
  09-07 10:44:09.594: WARN/System.err(8721):     at android.view.View.dispatchTouchEvent(View.java:3928)
  09-07 10:44:09.594: WARN/System.err(8721):     at android.view.ViewGroup.dispatchTouchEvent(ViewGroup.java:955)
  09-07 10:44:09.594: WARN/System.err(8721):     at android.view.ViewGroup.dispatchTouchEvent(ViewGroup.java:1015)
  09-07 10:44:09.594: WARN/System.err(8721):     at android.view.ViewGroup.dispatchTouchEvent(ViewGroup.java:1015)
  09-07 10:44:09.594: WARN/System.err(8721):     at android.view.ViewGroup.dispatchTouchEvent(ViewGroup.java:1015)
  09-07 10:44:09.604: WARN/System.err(8721):     at com.android.internal.policy.impl.PhoneWindow$DecorView.superDispatchTouchEvent(PhoneWindow.java:1772)
  09-07 10:44:09.604: WARN/System.err(8721):     at com.android.internal.policy.impl.PhoneWindow.superDispatchTouchEvent(PhoneWindow.java:1145)
  09-07 10:44:09.604: WARN/System.err(8721):     at android.app.Activity.dispatchTouchEvent(Activity.java:2214)
  09-07 10:44:09.604: WARN/System.err(8721):     at com.android.internal.policy.impl.PhoneWindow$DecorView.dispatchTouchEvent(PhoneWindow.java:1747)
  09-07 10:44:09.604: WARN/System.err(8721):     at android.view.ViewRoot.deliverPointerEvent(ViewRoot.java:2336)
  09-07 10:44:09.604: WARN/System.err(8721):     at android.view.ViewRoot.handleMessage(ViewRoot.java:1976)
  09-07 10:44:09.614: WARN/System.err(8721):     at android.os.Handler.dispatchMessage(Handler.java:99)
  09-07 10:44:09.614: WARN/System.err(8721):     at android.os.Looper.loop(Looper.java:143)
  09-07 10:44:09.614: WARN/System.err(8721):     at android.app.ActivityThread.main(ActivityThread.java:4277)
  09-07 10:44:09.614: WARN/System.err(8721):     at java.lang.reflect.Method.invokeNative(Native Method)
  09-07 10:44:09.614: WARN/System.err(8721):     at java.lang.reflect.Method.invoke(Method.java:507)
  09-07 10:44:09.614: WARN/System.err(8721):     at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:839)
  09-07 10:44:09.614: WARN/System.err(8721):     at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:597)
  09-07 10:44:09.624: WARN/System.err(8721):     at dalvik.system.NativeStart.main(Native Method)
  </code></pre>
  
  <p>Exception occurs only while going towards right...
  Please suggest me where im wrong????....
  Thanks...</p>