Question

导航抽屉物品面临一个奇怪的问题，我有3种语言的3种不同的字符串资源，并且在按钮上重新创建活动时，单击活动中的所有文本更改为除导航抽屉项目之外的相应语言，但在下一个娱乐抽屉项目更改并显示之前应显示的值，所以它迟了一步。

这是我的代码：

public class MainActivity extends AppCompatActivity
    implements NavigationView.OnNavigationItemSelectedListener {
@Override
protected void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    setContentView(R.layout.activity_main);
    Toolbar toolbar = (Toolbar) findViewById(R.id.toolbar);
    setSupportActionBar(toolbar);

    if (Constants.language==2) {
        LocaleHelper.setLocale(this, "ur");
    }else if (Constants.language==1){
        LocaleHelper.setLocale(this, "hi");
    }else if (Constants.language==0){
        LocaleHelper.setLocale(this, "en");
    }

    DrawerLayout drawer = (DrawerLayout) findViewById(R.id.drawer_layout);
    ActionBarDrawerToggle toggle = new ActionBarDrawerToggle(
            this, drawer, toolbar, R.string.navigation_drawer_open, R.string.navigation_drawer_close);
    drawer.setDrawerListener(toggle);
    toggle.syncState();

    NavigationView navigationView = (NavigationView) findViewById(R.id.nav_view);
    navigationView.setNavigationItemSelectedListener(this);
}

 @SuppressWarnings("StatementWithEmptyBody")
@Override
public boolean onNavigationItemSelected(MenuItem item) {
    // Handle navigation view item clicks here.
    int id = item.getItemId();
if (id == R.id.nav_language) {
        builder = new AlertDialog.Builder(this);
        builder.setTitle(getResources().getString(R.string.choose_language));
        builder.setPositiveButton("hindi",
                new DialogInterface.OnClickListener()
                {
                    public void onClick(DialogInterface dialog, int id)
                    {
                        Constants.language = 1;
                        dialog.cancel();
                        recreate();
                    }
                });

        builder.setNeutralButton("english",
                new DialogInterface.OnClickListener()
                {
                    public void onClick(DialogInterface dialog, int id)
                    {
                        Constants.language = 0;
                        dialog.cancel();
                        recreate();
                    }
                });

        builder.setNegativeButton("urdu",
                new DialogInterface.OnClickListener()
                {
                    public void onClick(DialogInterface dialog, int id)
                    {
                        Constants.language = 2;
                        dialog.cancel();
                        recreate();
                    }
                });
        builder.create().show();
    }




    DrawerLayout drawer = (DrawerLayout) findViewById(R.id.drawer_layout);
    drawer.closeDrawer(GravityCompat.START);
    return true;
}

<?xml version="1.0" encoding="utf-8"?>
<menu xmlns:android="http://schemas.android.com/apk/res/android">

<group android:checkableBehavior="single">
    <item
        android:id="@+id/nav_topstories"
        android:icon="@drawable/ic_top_stories"
        android:title="@string/top_stories" />
    <item
        android:id="@+id/nav_india"
        android:icon="@drawable/ic_india"
        android:title="@string/india" />
    <item
        android:id="@+id/nav_world"
        android:icon="@drawable/world_icon"
        android:title="@string/world" />
</group>
</menu>

我已经检查了其他所有内容，例如locale，constant.language和所有3种语言的字符串，活动中的其他文本视图正在正确更新，只有抽屉同步延迟了1。

Answer 1

如果有人面临同样的问题，这就是我要解决的问题

navigationView.getMenu().clear();
navigationView.inflateMenu(R.menu.activity_main_drawer);

我认为即使在重新创建活动时，资源也不会重新加载，因此清除它并再次膨胀它会解决它。

Answer 2

您必须在调用setContentView（）之前更改/加载语言。这适用于使用菜单资源的视图： bottomNavigationView，NavigationDrawer。如果在setContentView（）之后更改/加载，则除非重新创建活动，否则不会更改上述视图。

public class MainActivity extends AppCompatActivity {

    private BottomNavigationView mBottomNavigation;
    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        changeLanguage(getBaseContext());
        setContentView(R.layout.activity_main);
    }

    public void changeLanguage(Context context, String languageToload) {
        Locale locale = new Locale(languageToload);
        Locale.setDefault(locale);
        Configuration config = new Configuration();
        config.locale = locale;
        context.getResources().updateConfiguration(config, context.getResources().getDisplayMetrics());
    }
}

导航抽屉菜单项显示旧的区域设置值

2 个答案: