android.widget.Swtich -在暂停时保持状态？

<Switch
    android:id="@+id/switch1"
    android:layout_width="wrap_content"
    android:layout_height="wrap_content" />

Switch switch1 = findViewById(R.id.switch1);
switch1.setChecked(isSwitchOn); // isSwitchOn为Switch的状态（打开/关闭）

@Override
protected void onSaveInstanceState(Bundle outState) {
    super.onSaveInstanceState(outState);
    boolean isSwitchOn = switch1.isChecked();
    outState.putBoolean("switch_state", isSwitchOn);
}

@Override
protected void onRestoreInstanceState(Bundle savedInstanceState) {
    super.onRestoreInstanceState(savedInstanceState);
    boolean isSwitchOn = savedInstanceState.getBoolean("switch_state");
    switch1.setChecked(isSwitchOn);
}