Make sure panHandler can be passed as null.

Example/Example.js

@@ -59,7 +59,7 @@ export default class Example extends React.Component {
                         <Scene key="loginModal" component={Login} title="Login"/>
                         <Scene key="loginModal2" hideNavBar={true} component={Login2} title="Login2" panHandlers={null} duration={1}/>
                     </Scene>
-                    <Scene key="tabbar" component={NavigationDrawer}>
+                    <Scene key="tabbar" component={NavigationDrawer} panHandlers={null}>
                         <Scene key="main" tabs={true} >
                             <Scene key="tab1"  title="Tab #1" icon={TabIcon} navigationBarStyle={{backgroundColor:"red"}} titleStyle={{color:"white"}}>
                                 <Scene key="tab1_1" component={TabView} title="Tab #1_1" onRight={()=>alert("Right button")} rightTitle="Right" />

src/DefaultRenderer.js

@@ -105,13 +105,13 @@ export default class DefaultRenderer extends Component {
 
         const isVertical = direction === "vertical";
 
-        if (!animationStyle) {
+        if (typeof(animationStyle) === 'undefined') {
             animationStyle = (isVertical ?
                 NavigationCardStackStyleInterpolator.forVertical(props) :
                 NavigationCardStackStyleInterpolator.forHorizontal(props));
         }
 
-        if (!panHandlers) {
+        if (typeof(panHandlers) === 'undefined') {
             panHandlers = panHandlers || (isVertical ?
                     NavigationCardStackPanResponder.forVertical(props) :
                     NavigationCardStackPanResponder.forHorizontal(props));