android - ClasscastException in LauncherActivity -

i getting classcastexception when launching app problem in taxitwinapplication app = (taxitwinapplication)getapplication(); activity trying call method other class

public class launcheractivity extends activity {

@override public void oncreate(bundle icicle) {     super.oncreate(icicle);     intent intent;     taxitwinapplication app = (taxitwinapplication)getapplication();     app.register();     switch (taxitwinapplication.getuserstate()) {         case not_subscribed:         case subscribed:             intent = new intent(this, mainactivity.class);             intent.addflags(flag_activity_new_task | flag_activity_clear_task);             break;         case participant:             intent = new intent(this, mytaxitwinactivity.class);             intent.addflags(flag_activity_new_task | flag_activity_clear_task);             break;         case owner:             intent = new intent(this, mytaxitwinactivity.class);             intent.addflags(flag_activity_new_task | flag_activity_clear_task);             break;         default:             intent = new intent(this, mainactivity.class);             intent.addflags(flag_activity_new_task | flag_activity_clear_task);     }     startactivity(intent);     finish(); } 

}

public class taxitwinapplication extends application {

private static int pendingnotificationscount = 0; private static userstate userstate = not_subscribed; private servicesmanagement servicesmanagement; private locationlistener locationlistener;  @override public void oncreate() {     super.oncreate(); }  public void unregister() {     locationmanager locationmanager = (locationmanager) getsystemservice(context.location_service);     locationmanager.removeupdates(locationlistener); }  public void register() {     servicesmanagement = new servicesmanagement(this);     locationlistener = new locationlistener() {         public void onlocationchanged(location location) {             locationupdate(location);         }          public void onstatuschanged(string provider, int status, bundle extras) {         }          public void onproviderenabled(string provider) {             locationmanager locationmanager = (locationmanager) getsystemservice(context.location_service);             if (activitycompat.checkselfpermission(getapplicationcontext(), manifest.permission.access_fine_location) != packagemanager.permission_granted && activitycompat.checkselfpermission(getapplicationcontext(), manifest.permission.access_coarse_location) != packagemanager.permission_granted) {                 // todo: consider calling                 //    activitycompat#requestpermissions                 // here request missing permissions, , overriding                 //   public void onrequestpermissionsresult(int requestcode, string[] permissions,                 //                                          int[] grantresults)                 // handle case user grants permission. see documentation                 // activitycompat#requestpermissions more details.                 return;             }             locationmanager.requestlocationupdates(locationmanager.gps_provider, 10000, 3, this);         }          public void onproviderdisabled(string provider) {         }     };     //every 10 seconds , @ least 3 meters     locationmanager locationmanager = (locationmanager) getsystemservice(context.location_service);     locationmanager.requestlocationupdates(locationmanager.gps_provider, 10000, 3, locationlistener); }  private void locationupdate(location location) {     gcmhandler gcmhandler = new gcmhandler(this);     gcmhandler.locationchanged(location); }  public static int getpendingnotificationscount() {     return pendingnotificationscount; }  public static void setpendingnotificationscount(int pendingnotifications) {     pendingnotificationscount = pendingnotifications; }  public static userstate getuserstate() {     return userstate; }  public static void setuserstate(userstate userstate) {     taxitwinapplication.userstate = userstate; }  public static void exit(context context) {     gcmhandler gcmhandler = new gcmhandler(context);     if (userstate == userstate.owner || userstate == userstate.participant) {         gcmhandler.leavetaxitwin();     }     gcmhandler.unsubscribe();      taxitwinapplication app = (taxitwinapplication) context.getapplicationcontext();     app.unregister();      dbhelper dbhelper = new dbhelper(context);     dbhelper.deletetables(dbhelper.getwritabledatabase());     android.os.process.killprocess(android.os.process.mypid()); } 

}

<application     android:icon="@mipmap/ic_launcher"     android:label="@string/app_name"     android:name="com....taxitwinapplication">