android - how to create dynamic sidebar ( menu ) for unity app -

i want create sidebar (like nav drawer in android) ar unity app, when touch left border of screen , drag right, sidebar should appear list of buttons such (settings, us..).

just quick whipped up. should started.

using unityengine; using system.collections; using unityengine.ui;  public class slidepanel : monobehaviour {      //process touch panel display on if touch less threshold.     private float leftedge = screen.width * 0.25f;      //minimum swipe distance showing/hiding panel.     float swipedistance = 10f;       float startxpos;     bool processtouch = false;     bool isexpanded = false;     public animation panelanimation;        void update(){         if(input.touches.length>0)             panel(input.gettouch(0));     }         void panel (touch touch)     {         switch (touch.phase) {         case touchphase.began:             //get start position of touch.              startxpos = touch.position.x;             debug.log(startxpos);             //check if need process touch showing panel.             if (startxpos < leftedge) {                 processtouch = true;             }             break;         case touchphase.ended:             if (processtouch) {                 //determine how far finger swiped.                 float deltax = touch.position.x - startxpos;                   if(isexpanded && deltax < (-swipedistance))                 {                      panelanimation.crossfade("slideout");                     isexpanded = false;                 }                  else if(!isexpanded && deltax > swipedistance)                  {                     panelanimation.crossfade("slidein");                     isexpanded = true;                 }                  startxpos = 0f;                 processtouch = false;             }             break;         default:             return;         }     } }