Android different styles on API 27

Question

Different styles and strings are defined for the app. On Android prior to 8 everything is OK, but on Android 8 styles are not loaded correctly.

Note: strings are fine. Its just styles.

res
    values
        styles.xml
        strings.xml
    values-fr
        styles.xml
        strings.xml
    values-v21
        styles.xml

I changed the app locale like this:

public static Context changeAppLocale(String lang, Context c) {

        Locale locale = new Locale(lang);
        Resources resources = c.getResources();
        Configuration config = new Configuration(resources.getConfiguration());
        Locale.setDefault(locale);
        if(Build.VERSION.SDK_INT > 16) {
            config.setLayoutDirection(locale);
        }
        if(Build.VERSION.SDK_INT > 24){
            LocaleList localeList = new LocaleList(locale);
            LocaleList.setDefault(localeList);
            config.setLocale(locale);
            config.setLocales(localeList);
            c = c.createConfigurationContext(config);
        }
        else{
            config.locale = locale;
            resources.updateConfiguration(config, resources.getDisplayMetrics());
        }
        return c;
    }

And I apply it inside the activity like this:

protected void attachBaseContext(Context newBase) {
    context = G.changeAppLocale(G.appLang, newBase);
    super.attachBaseContext(context);
}

Once again, strings are loaded correctly, but styles not (Just on Android 8). Are different styles not supported on Android anymore?

Answer 1

I'm answering my own question in case somebody has the same problem and it may help them.

I was inflating the layout dynamically and I was using a static inflater that was instantiated by an old context.

// in class extended from Application

public static LayoutInflater globalInflater = (LayoutInflater) context.getSystemService(Context.LAYOUT_INFLATER_SERVICE);

And when I was inflating:

...
    pageView = (ViewGroup) G.globalInflater.inflate(R.layout.layout_main_log, container, false);
...

But that inflater was not updated when I was changing the app locale. Thus views would be inflated from an old locale. Now I instantiate the inflater every time I want to inflate a view:

 ...
Context context = getApplicationContext();
LayoutInflater inflater = (LayoutInflater) context.getSystemService(Context.LAYOUT_INFLATER_SERVICE);
if(inflater != null){
    pageView = (ViewGroup) inflater.inflate(R.layout.layout_main_log, container, false);
}
    ...

Thank you all for your time.