问Android设置Textview和EditText区域设置

EN

public class LocaleHelper extends ContextThemeWrapper {

    public LocaleHelper(Context base) {
        super(base, R.style.MyTheme);
    }

    @SuppressWarnings("deprecation")
    public static ContextWrapper wrap(Context context, String language) {
        Configuration config = context.getResources().getConfiguration();
        if (!language.equals("")) {
            Locale locale = new Locale(language);
            Locale.setDefault(locale);
            if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.N) {
                setSystemLocale(config, locale);
            } else {
                setSystemLocaleLegacy(config, locale);
            }
            if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.JELLY_BEAN_MR1) {
                config.setLayoutDirection(locale);
                context = context.createConfigurationContext(config);
            } else {
                context.getResources().updateConfiguration(config, context.getResources().getDisplayMetrics());
            }
        }
        return new LocaleHelper(context);
    }

    @SuppressWarnings("deprecation")
    private static Locale getSystemLocaleLegacy(Configuration config) {
        return config.locale;
    }

    @TargetApi(Build.VERSION_CODES.N)
    private static Locale getSystemLocale(Configuration config) {
        return config.getLocales().get(0);
    }

    @SuppressWarnings("deprecation")
    private static void setSystemLocaleLegacy(Configuration config, Locale locale) {
        config.locale = locale;
    }

    @TargetApi(Build.VERSION_CODES.N)
    private static void setSystemLocale(Configuration config, Locale locale) {
        config.setLocale(locale);
    }
}

@Override
protected void attachBaseContext(Context newBase) {
    super.attachBaseContext(LocaleHelper.wrap(newBase, "ar"));
}