android - ANR while starting new activity -

hi i'm displaying screen 3 seconds , i'm starting new activity on android 5.0 there black screen 10 sec , anr. code activity displaying 3 seconds:

private static final scheduledexecutorservice worker =         executors.newsinglethreadscheduledexecutor();  @override protected void oncreate(bundle savedinstancestate) {     super.oncreate(savedinstancestate);     crashlytics.start(this);     setcontentview(r.layout.splash_fragment);     runnable task = new runnable() {         public void run() {             startactivity(new intent(splashactivity.this, mainactivity.class));             finish();         }     };     worker.schedule(task, 3, timeunit.seconds); } 

and logs logcat:

activity destroy timeout activityrecord i/inputdispatcher(  725): application not responding: appwindowtoken has been 5005.0ms since event, 5003.6ms since wait started.   reason: waiting because no window has focus there focused application may add window when     finishes starting up. i/windowmanager(  725): input event dispatching timed out sending application appwindowtoken  reason: waiting because no window has focus there focused application may add window when     finishes starting up. 

what doing wrong , how can fix it?

why go lengthy process while have easy one. @chen commented above can start mainacitivity this

new handler().postdelayed(new runnable() {              @override             public void run() {                  startactivity(new intent(splashactivity.this, mainactivity.class));                  finish();                           }         }, 3000); 

happy_coding... :)