@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
try
{
this.getSupportActionBar().hide();
}
catch (NullPointerException e){}
setContentView(R.layout.activity_main);
}<style name="AppTheme" parent="Theme.AppCompat.Light.NoActionBar" />getSupportActionBar().hide();
requestWindowFeature(Window.FEATURE_NO_TITLE);
getSupportActionBar().hide();
this.getWindow().setFlags(WindowManager.LayoutParams.FLAG_FULLSCREEN,
WindowManager.LayoutParams.FLAG_FULLSCREEN);
setContentView(R.layout.activity_main); getSupportActionBar().hide();change
<style name="AppTheme" parent="Theme.AppCompat.Light.DarkActionBar">
to
<style name="AppTheme" parent="Theme.AppCompat.Light.NoActionBar">