android Oreo 中的 RTL 布局错误

Question

自从我在移动设备上升级到 android oreo 后，我对应用程序的 RTL 支持就无法正常工作。它将字符串更改为阿拉伯语但不更改布局方向。但如果我运行将相同的 RTL 转移到任何低于 oreo 的设备，一切正常。还有其他人遇到过这个问题吗？关于此错误和解决方法是否有任何官方声明？

以下是我更改语言环境的方法

public static boolean setDefaultLocale(Context context) {
    Resources resources = context.getResources();
    PreferenceManager preferenceManager = PreferenceManager.getInstance();
    String localLanguage = resources.getConfiguration().locale.getLanguage();
    boolean isLanguageChanged = !preferenceManager.getCurrentLanguageCode().equalsIgnoreCase(localLanguage);
    if (isLanguageChanged) {
        Log.d("", preferenceManager.getCurrentLanguageCode());
        Locale locale = new Locale(preferenceManager.getCurrentLanguageCode());
        if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.N)
            Locale.setDefault(Locale.Category.DISPLAY, locale);
        else
            Locale.setDefault(locale);
        Configuration config = new Configuration();
        config.locale = locale;
        resources.updateConfiguration(config, resources.getDisplayMetrics());
        ((Activity) context).recreate();
    }
    return isLanguageChanged;
}

Answer 1

在 onCreate 函数中添加以下代码进行简单修复：

if (Locale.getDefault().getLanguage()=="ar")
     getWindow().getDecorView().setLayoutDirection(View.LAYOUT_DIRECTION_RTL);
else
     getWindow().getDecorView().setLayoutDirection(View.LAYOUT_DIRECTION_LTR);

Answer 2

感谢 @amorenew 并调整了 Util class 中的方法以支持 oreo 中的这个奇怪更新下面是工作方法，您只需在用户更改应用程序语言首选项时调用此方法 onResume

/**
 * this to change app language to the saved language in user preferences
 *
 * @param context
 * @return
 */
public static boolean setDefaultLocale(Context context, boolean isClearData) {
    Resources resources = context.getResources();
    Resources resourcesApp = context.getApplicationContext().getResources();
    String localLanguage = resources.getConfiguration().locale.getLanguage();
    boolean isLanguageChanged = !PreferenceManager.getInstance().getCurrentLanguageCode().equalsIgnoreCase(localLanguage);
    if (isLanguageChanged) {
        Log.d("", PreferenceManager.getInstance().getCurrentLanguageCode());
        Locale locale = new Locale(PreferenceManager.getInstance().getCurrentLanguageCode());
        Locale.setDefault(locale);
        Configuration config = new Configuration();
        config.locale = locale;
        resources.updateConfiguration(config, resources.getDisplayMetrics());
        resourcesApp.updateConfiguration(config, resources.getDisplayMetrics());
        //for API 25
        Configuration configuration = resources.getConfiguration();
        configuration.setLocale(locale);
        context.getApplicationContext().createConfigurationContext(configuration);
        context.createConfigurationContext(configuration);

        ((Activity) context).recreate();
        if (isClearData) {
            CurrencyViewModel.getInstance().removeModel();
            CarNationalityViewModel.getInstance().removeModel();
            DialCodeViewModel.getInstance().removeModel();
        }
        if (android.os.Build.VERSION.SDK_INT >= Build.VERSION_CODES.O) {
            ((Activity)context).getWindow().getDecorView().setLayoutDirection(Locale.getDefault().getLanguage().equalsIgnoreCase("ar")
                    ? View.LAYOUT_DIRECTION_RTL : View.LAYOUT_DIRECTION_LTR);
        }
    }
    return isLanguageChanged;
}

android Oreo 中的 RTL 布局错误

RTL layout bug in android Oreo

android

android-layout

android-8.0-oreo