“cara mengubah tema aplikasi di studio android secara terprogram” Kode Jawaban

cara mengubah tema aplikasi di studio android secara terprogram

So, to switch between themes dynamically you simply need to call 
setTheme before super.onCreate like this:

  public void onCreate(Bundle savedInstanceState) {
      setTheme(android.R.style.Theme);
      super.onCreate(savedInstanceState);
      setContentView(R.layout.activity_second);
  }