Crash, null pointer exception

[gopalakrishnan-subramani]

Received a null pointer exception, crash the app, when I move drag object to right most,

I call setConfig to set the minLeft and maxLeft.

function onKnobMove(e) {
    console.log(e.source.knob, e.center, e.source.center);

    //var leftX = knobLeft.center.x;
    //var   rightX = knobRight.center.x;

    var leftX = knobLeft.rect.x  +  knobLeft.rect.width / 2;//gs

    var leftX = knobLeft.rect.x;//gs
    var rightX = knobRight.rect.x  +  knobRight.rect.width / 2; //gs


    console.log('left x', knobLeft.rect.x, 'leFtx', leftX);
    console.log('rightX', rightX);

    //knobRight.minLeft = leftX + (WIDTH / 2);
    knobRight.draggable.setConfig('minLeft',  leftX + WIDTH);
    knobRight.draggable.setConfig('maxLeft', _params.width - WIDTH);

    knobLeft.draggable.setConfig('maxLeft', rightX - WIDTH - (WIDTH / 2));
    knobLeft.draggable.setConfig('minLeft', 0);

    console.log('knobRight minLeft', knobRight.draggableConfig.minLeft);
    console.log('knobLeft maxLeft', knobLeft.draggableConfig.maxLeft);

    fillView.applyProperties({
        left: leftX,
        width: rightX - leftX
    });


    //leftValue (leftX + (WIDTH / 2)) / distance  //original
    //GS begin
    var values = {};
    values.leftValue = leftX / distance;
    values.rightValue = (rightX + (WIDTH / 2)) / distance;

    console.log("actual ", values);

    if (values.leftValue <= 0.05) {
        values.leftValue = 0;
    }

    if (values.rightValue >= 0.96) {
        values.rightValue = 1;
    }

    console.log("adjusted ", values);



    view.fireEvent('change', values);
    //GS End

    //view.fireEvent('change', {leftValue: (leftX + (WIDTH / 2)) / distance, rightValue: (rightX + (WIDTH / 2)) / distance});

}

[INFO] : undefined undefined undefined
[ERROR] : InputEventReceiver: Exception dispatching input event.
[WARN] : dalvikvm: threadid=1: thread exiting with uncaught exception (group=0xa4be7648)
[ERROR] : TiApplication: (main) [15760,15760] Sending event: exception on thread: main msg:java.lang.NullPointerException; Titanium 3.5.0,2015/01/12 15:33,0014f83
[ERROR] : TiApplication: java.lang.NullPointerException
[ERROR] : TiApplication: at ti.draggable.DraggableGesture.drag(DraggableGesture.java:163)
[ERROR] : TiApplication: at ti.draggable.DraggableGesture.onTouch(DraggableGesture.java:125)
[ERROR] : TiApplication: at android.view.View.dispatchTouchEvent(View.java:7379)
[ERROR] : TiApplication: at android.view.ViewGroup.dispatchTransformedTouchEvent(ViewGroup.java:2205)
[ERROR] : TiApplication: at android.view.ViewGroup.dispatchTouchEvent(ViewGroup.java:1940)
[ERROR] : TiApplication: at android.view.ViewGroup.dispatchTransformedTouchEvent(ViewGroup.java:2211)
[ERROR] : TiApplication: at android.view.ViewGroup.dispatchTouchEvent(ViewGroup.java:1954)
[ERROR] : TiApplication: at android.view.ViewGroup.dispatchTransformedTouchEvent(ViewGroup.java:2211)
[ERROR] : TiApplication: at android.view.ViewGroup.dispatchTouchEvent(ViewGroup.java:1954)
[ERROR] : TiApplication: at android.view.ViewGroup.dispatchTransformedTouchEvent(ViewGroup.java:2211)
[ERROR] : TiApplication: at android.view.ViewGroup.dispatchTouchEvent(ViewGroup.java:1954)
[ERROR] : TiApplication: at android.view.ViewGroup.dispatchTransformedTouchEvent(ViewGroup.java:2211)
[ERROR] : TiApplication: at android.view.ViewGroup.dispatchTouchEvent(ViewGroup.java:1954)
[ERROR] : TiApplication: at android.view.ViewGroup.dispatchTransformedTouchEvent(ViewGroup.java:2211)
[ERROR] : TiApplication: at android.view.ViewGroup.dispatchTouchEvent(ViewGroup.java:1954)
[ERROR] : TiApplication: at android.view.ViewGroup.dispatchTransformedTouchEvent(ViewGroup.java:2211)
[ERROR] : TiApplication: at android.view.ViewGroup.dispatchTouchEvent(ViewGroup.java:1954)
[ERROR] : TiApplication: at android.view.ViewGroup.dispatchTransformedTouchEvent(ViewGroup.java:2211)
[ERROR] : TiApplication: at android.view.ViewGroup.dispatchTouchEvent(ViewGroup.java:1954)
[ERROR] : TiApplication: at android.view.ViewGroup.dispatchTransformedTouchEvent(ViewGroup.java:2211)
[ERROR] : TiApplication: at android.view.ViewGroup.dispatchTouchEvent(ViewGroup.java:1954)
[ERROR] : TiApplication: at com.android.internal.policy.impl.PhoneWindow$DecorView.superDispatchTouchEvent(PhoneWindow.java:1966)
[ERROR] : TiApplication: at com.android.internal.policy.impl.PhoneWindow.superDispatchTouchEvent(PhoneWindow.java:1418)
[ERROR] : TiApplication: at android.app.Activity.dispatchTouchEvent(Activity.java:2424)
[ERROR] : TiApplication: at android.support.v7.app.ActionBarActivityDelegateICS$WindowCallbackWrapper.dispatchTouchEvent(ActionBarActivityDelegateICS.java:268)
[ERROR] : TiApplication: at com.android.internal.policy.impl.PhoneWindow$DecorView.dispatchTouchEvent(PhoneWindow.java:1914)
[ERROR] : TiApplication: at android.view.View.dispatchPointerEvent(View.java:7564)
[ERROR] : TiApplication: at android.view.ViewRootImpl$ViewPostImeInputStage.processPointerEvent(ViewRootImpl.java:3883)
[ERROR] : TiApplication: at android.view.ViewRootImpl$ViewPostImeInputStage.onProcess(ViewRootImpl.java:3778)
[ERROR] : TiApplication: at android.view.ViewRootImpl$InputStage.deliver(ViewRootImpl.java:3379)
[ERROR] : TiApplication: at android.view.ViewRootImpl$InputStage.onDeliverToNext(ViewRootImpl.java:3429)
[ERROR] : TiApplication: at android.view.ViewRootImpl$InputStage.forward(ViewRootImpl.java:3398)
[ERROR] : TiApplication: at android.view.ViewRootImpl$AsyncInputStage.forward(ViewRootImpl.java:3483)
[ERROR] : TiApplication: at android.view.ViewRootImpl$InputStage.apply(ViewRootImpl.java:3406)
[ERROR] : TiApplication: at android.view.ViewRootImpl$AsyncInputStage.apply(ViewRootImpl.java:3540)
[ERROR] : TiApplication: at android.view.ViewRootImpl$InputStage.deliver(ViewRootImpl.java:3379)
[ERROR] : TiApplication: at android.view.ViewRootImpl$InputStage.onDeliverToNext(ViewRootImpl.java:3429)
[ERROR] : TiApplication: at android.view.ViewRootImpl$InputStage.forward(ViewRootImpl.java:3398)
[INFO] : lication: at android.view.ViewRootImpl$InputStage.apply(ViewRootImpl.java:3406)
[ERROR] : TiApplication: at android.view.ViewRootImpl$InputStage.deliver(ViewRootImpl.java:3379)
[ERROR] : TiApplication: at android.view.ViewRootImpl.deliverInputEvent(ViewRootImpl.java:5419)
[ERROR] : TiApplication: at android.view.ViewRootImpl.doProcessInputEvents(ViewRootImpl.java:5399)
[ERROR] : TiApplication: at android.view.ViewRootImpl.enqueueInputEvent(ViewRootImpl.java:5370)
[ERROR] : TiApplication: at android.view.ViewRootImpl$WindowInputEventReceiver.onInputEvent(ViewRootImpl.java:5493)
[ERROR] : TiApplication: at android.view.InputEventReceiver.dispatchInputEvent(InputEventReceiver.java:182)
[ERROR] : TiApplication: at android.view.InputEventReceiver.nativeConsumeBatchedInputEvents(Native Method)
[ERROR] : TiApplication: at android.view.InputEventReceiver.consumeBatchedInputEvents(InputEventReceiver.java:174)
[ERROR] : TiApplication: at android.view.ViewRootImpl.doConsumeBatchedInput(ViewRootImpl.java:5472)
[ERROR] : TiApplication: at android.view.ViewRootImpl$ConsumeBatchedInputRunnable.run(ViewRootImpl.java:5512)
[ERROR] : TiApplication: at android.view.Choreographer$CallbackRecord.run(Choreographer.java:749)
[ERROR] : TiApplication: at android.view.Chore