Android/Java：如何从其他活动访问my BottomNavigationView特定变量？

我想从LocalNav中的NewBottomNav访问变量

初始化

，但我不知道如何访问它

NewBottomNav类：

public final class newBottomNav extends BottomNavigationView {
    private final Context context;
    private Typeface fontFace = null;
    public static Integer initialization = 0;

...
}

本地导航类：

public class LocalNav extends AppCompatActivity {
    Context mContext;
    WebView view;
    BottomNavigationView bottomNavigation;

@Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        int size = bottomNavigation.getMenu().size();

        bottomNavigation.setOnNavigationItemSelectedListener (new BottomNavigationView.OnNavigationItemSelectedListener() {
            @Override
            public boolean onNavigationItemSelected(MenuItem Item) {

            bottomNavigation.initialization = 1; //<= How to access to initialization
...
}

public类LocalNav扩展appcompative活动{
语境；
网络视图；
底部导航查看底部导航；
@凌驾
创建时受保护的void（Bundle savedInstanceState）{
super.onCreate（savedInstanceState）；
int size=bottomNavigation.getMenu（）.size（）；
bottomNavigation.setOnNavigationItemSelectedListener（新的BottomNavigationView.OnNavigationItemSelectedListener（）{
@凌驾
公共布尔值onNavigationItemSelected（MenuItem项）{
bottomNavigation.initialization=1；//您只需要从

BottomNavigationView bottomNavigation;

到

在
BottomNavigationView

BottomNavigationView bottomNavigation;

newBottomNav bottomNavigation;