Daynight theme support

[JasonHezz]

Switch to night mode ,floatingsearchview nothing changed and reopen app ,the floatingsearchview auto switch to night mode
here are some screenshot

normal state:

switch to night mode state:

reopen app:

[JasonHezz]

The new version still had the same issue , spend some time to investigate.According to Chris Banes AppCompat v23.2 — DayNight, the resources for day/night switching should not be restored by floatingsearchview. That's why switch to night mode state , the BackgroundColor still is white.

 @Override
  public void onRestoreInstanceState(Parcelable state) {
    .....
   // setBackgroundColor(savedState.backgroundColor);
  }

it works for me.