更改语言环境后资源未更新

Question

我的应用程序支持两种语言（英语和西班牙语）。当我将语言环境从英语更改为西班牙语时，它会成功（更改语言环境）。但是，资源没有得到更新。更新语言环境后，我将重新创建活动。

更改语言环境后，我已在启动屏幕上调试了该应用程序。并检查当前的语言环境（返回“ es”）。但是仍然没有更新字符串。西班牙语字符串文件放在values-es包下。

还尝试通过创建一个新的应用程序来运行相同的本地化代码，并且它可以正常工作。

以下是代码：

VerifiApp.kt ：

class VerifiApp : Application(), HasActivityInjector {

@Inject
lateinit var dispatchingAndroidInjector: DispatchingAndroidInjector<Activity>

override fun onCreate() {
    super.onCreate()

    if (BuildConfig.DEBUG) {
        Timber.plant(Timber.DebugTree())
    }

    AppInjector.init(this)
}

override fun attachBaseContext(base: Context?) {
    super.attachBaseContext(LocaleHelper.onAttach(base!!, "en"))
}

override fun activityInjector() = dispatchingAndroidInjector
}

SelectLanguageActivity.kt：

class SelectLanguageActivity : BaseActivity<SelectLanguageViewModel>() {

private var languageCode = ""

@Inject
lateinit var appDataManager: AppDataManager

@Inject
lateinit var appViewModelFactory: AppViewModelFactory

private lateinit var selectLanguageViewModel: SelectLanguageViewModel

private lateinit var languageAdapter: ArrayAdapter<Language>

private var languageList = ArrayList<Language>()

override fun getViewModel(): SelectLanguageViewModel {
    selectLanguageViewModel = ViewModelProviders.of(this@SelectLanguageActivity, appViewModelFactory)
        .get(SelectLanguageViewModel::class.java)
    return selectLanguageViewModel
}


override fun onCreate(savedInstanceState: Bundle?) {
    super.onCreate(savedInstanceState)
    setContentView(R.layout.activity_select_language)

    languageList.add(Language("English", "en"))
    languageList.add(Language("Spanish", "es"))

    languageAdapter = ArrayAdapter(this, R.layout.item_spinner_dropdown, languageList)
    spinnerLanguage.adapter = languageAdapter

    spinnerLanguage.apply {
        onItemSelectedListener = object : AdapterView.OnItemSelectedListener {
            override fun onNothingSelected(parent: AdapterView<*>?) {
            }

            override fun onItemSelected(parent: AdapterView<*>?, view: View?, position: Int, id: Long) {
                languageCode = languageList[position].languageCode
            }
        }
    }

    btnUpdate.setOnClickListener {

        val context = LocaleHelper.setLocale(this, languageCode)
        val resources = context.resources

        val bundle = Bundle()
        bundle.putString("language_code", languageCode)
        val intent = Intent(applicationContext, AuthActivity::class.java)
        intent.putExtras(bundle)
        startActivity(intent)
    }
}
}

BaseActivity.kt：

abstract class BaseActivity<out V : ViewModel> : AppCompatActivity(), BaseFragment.Callback {

private lateinit var mViewModel: V
private lateinit var progressDialog: Dialog

override fun onCreate(savedInstanceState: Bundle?) {
    performDependencyInjection()
    super.onCreate(savedInstanceState)
    initializeProgressLoader()
}

private fun initializeProgressLoader() {
    progressDialog = Dialog(this)
    progressDialog.setCancelable(false)
    progressDialog.requestWindowFeature(Window.FEATURE_NO_TITLE)
    progressDialog.window.setBackgroundDrawableResource(android.R.color.transparent)
    progressDialog.setContentView(R.layout.dialog_progress)
}

fun setProgressVisibility(visible: Boolean) {
    if (visible) {
        progressDialog.show()
    } else {
        progressDialog.dismiss()
    }
}

private fun performDependencyInjection() {
    AndroidInjection.inject(this)
    mViewModel = getViewModel()
}

override fun onFragmentAttached() {

}

override fun onFragmentDetached(tag: String) {

}


fun isNetworkConnected(): Boolean {
    val flag = NetworkUtils.isNetworkConnected(applicationContext)
    if (!flag) {
        showErrorToast("Internet not connected!")
    }
    return flag
}

fun hideKeyboard() {
    val view: View? = this.currentFocus
    val inputMethodManager: InputMethodManager =
        getSystemService(Context.INPUT_METHOD_SERVICE) as InputMethodManager
    inputMethodManager.hideSoftInputFromWindow(view?.windowToken, 0)
}

fun showErrorToast(message: String) {
    ColorToast.makeText(this, message, ColorToast.LENGTH_SHORT, ColorToast.ERROR, false).show()
}

fun showInfoToast(message: String) {
    ColorToast.makeText(this, message, ColorToast.LENGTH_SHORT, ColorToast.INFO, false).show()
}

fun showSuccessToast(message: String) {
    ColorToast.makeText(this, message, ColorToast.LENGTH_SHORT, ColorToast.SUCCESS, false).show()
}


/**
 * Override for set view model
 *
 * @return ViewModel instance
 * */
abstract fun getViewModel(): V

override fun attachBaseContext(newBase: Context?) {
    super.attachBaseContext(LocaleHelper.onAttach(newBase!!))
}
}

LocaleHelper.java

 public class LocaleHelper {

private static final String SELECTED_LANGUAGE = "Locale.Helper.Selected.Language";

public static Context onAttach(Context context) {
    String lang = getPersistedData(context, Locale.getDefault().getLanguage());
    return setLocale(context, lang);
}

public static Context onAttach(Context context, String defaultLanguage) {
    String lang = getPersistedData(context, defaultLanguage);
    return setLocale(context, lang);
}

public static String getLanguage(Context context) {
    return getPersistedData(context, Locale.getDefault().getLanguage());
}

public static Context setLocale(Context context, String language) {
    persist(context, language);

    if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.N) {
        return updateResources(context, language);
    }

    return updateResourcesLegacy(context, language);
}

private static String getPersistedData(Context context, String defaultLanguage) {
    SharedPreferences preferences = PreferenceManager.getDefaultSharedPreferences(context);
    return preferences.getString(SELECTED_LANGUAGE, defaultLanguage);
}

private static void persist(Context context, String language) {
    SharedPreferences preferences = PreferenceManager.getDefaultSharedPreferences(context);
    SharedPreferences.Editor editor = preferences.edit();

    editor.putString(SELECTED_LANGUAGE, language);
    editor.apply();
}

@TargetApi(Build.VERSION_CODES.N)
private static Context updateResources(Context context, String language) {
    Locale locale = new Locale(language);
    Locale.setDefault(locale);

    Configuration configuration = context.getResources().getConfiguration();
    configuration.setLocale(locale);
    configuration.setLayoutDirection(locale);

    return context.createConfigurationContext(configuration);
}

@SuppressWarnings("deprecation")
private static Context updateResourcesLegacy(Context context, String language) {
    Locale locale = new Locale(language);
    Locale.setDefault(locale);

    Resources resources = context.getResources();

    Configuration configuration = resources.getConfiguration();
    configuration.locale = locale;
    if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.JELLY_BEAN_MR1) {
        configuration.setLayoutDirection(locale);
    }

    resources.updateConfiguration(configuration, resources.getDisplayMetrics());

    return context;
}
}

我们将不胜感激。谢谢。