package org.schabi.newpipe; import android.os.Bundle; import android.preference.PreferenceManager; import android.support.annotation.Nullable; import android.support.v7.app.AppCompatActivity; import java.util.Objects; public class Themer extends AppCompatActivity { @Override protected void onCreate(@Nullable Bundle savedInstanceState) { super.onCreate(savedInstanceState); if (Objects.equals(PreferenceManager.getDefaultSharedPreferences(this) .getString("theme", "1"), "0")) { setTheme(R.style.DarkTheme); } } }