LanguagePreferenceCompat.java 文件源码

private void loadLangs(Context context, @Nullable AttributeSet attrs) {
    setDefaultValue(SYSTEM_LANGUAGE_CODE);

    // Fetch readable details
    ContextUtils contextUtils = new ContextUtils(context);
    List<String> languages = new ArrayList<>();
    Object bcof = contextUtils.getBuildConfigValue("APPLICATION_LANGUAGES");
    if (bcof instanceof String[]) {
        for (String langId : (String[]) bcof) {
            Locale locale = contextUtils.getLocaleByAndroidCode(langId);
            languages.add(summarizeLocale(locale) + ";" + langId);
        }
    }

    // Sort languages naturally
    Collections.sort(languages);

    // Show in UI
    String[] entries = new String[languages.size() + 2];
    String[] entryval = new String[languages.size() + 2];
    for (int i = 0; i < languages.size(); i++) {
        entries[i + 2] = languages.get(i).split(";")[0];
        entryval[i + 2] = languages.get(i).split(";")[1];
    }
    entryval[0] = SYSTEM_LANGUAGE_CODE;
    entries[0] = _systemLanguageName + "\n[" + summarizeLocale(context.getResources().getConfiguration().locale) + "]";
    entryval[1] = _defaultLanguageCode;
    entries[1] = summarizeLocale(contextUtils.getLocaleByAndroidCode(_defaultLanguageCode));

    setEntries(entries);
    setEntryValues(entryval);
}