使用新的支持库根据区域设置更改应用程序语言

Question

我曾经更改过应用程序中的语言通过执行以下操作：

Configuration cfg = new Configuration();
    if (!TextUtils.isEmpty(lang))
        cfg.locale = new Locale(lang);
    else
        cfg.locale = Locale.getDefault();

    Resources resources = ctx.getResources();
    resources.updateConfiguration(cfg, resources.getDisplayMetrics());

然后重启activity:

Intent intent = new Intent(context, HomeActivity.class);
        intent.setFlags(Intent.FLAG_ACTIVITY_NEW_TASK
                | Intent.FLAG_ACTIVITY_CLEAR_TOP);
        context.startActivity(intent);

这种方式工作正常，但是在我将支持库版本从 'com.android.support:appcompat-v7:23.1.1'

更改后

到'com.android.support:appcompat-v7:23.2.1'

除非我终止应用程序，否则资源不会改变

我写了一个示例here that demonstrate the problem with a dummy solution that restart the app through the alarm manager, yet i believe that i might be doing something wrong or i missed something wrote in the release notes here

我已经搜索了很多，但我没有找到任何关于这个问题的信息， commonsware's blog

中提到了我发现的与资源相关的唯一新问题

这是关于新 android N 的，如其所说：

if you are one of those developers who has been overriding the user’s device locale within your app… test thoroughly on N, please.

然而我的问题是棒棒糖、奇巧和糖豆

Answer 1

下面的代码对我来说工作正常。我优先存储语言并使用以下代码我能够制作多语言应用程序。

Locale locale;
switch (userPreference.language)
    {
        default:
        case 0:
            locale = new Locale("de");
            languageCode = "de-de";
            break;

        case 1:
            locale = new Locale("en");
            languageCode = "en-en";
            break;

        case 2:
            locale = new Locale("fr");
            languageCode = "fr-fr";
            break;

        case 3:
            locale = new Locale("pl");
            languageCode = "pl-pl";
            break;
    }

    Configuration config = getResources().getConfiguration();
    Locale.setDefault(locale);
    config.locale = locale;
    getResources().updateConfiguration(config, getResources().getDisplayMetrics());

请看下面我的代码activity

public void onCreate(Bundle savedInstanceState)
{
    super.onCreate(savedInstanceState);
    UserPreference userPreference = PreferenceHelper.getUserPreference(context);
    switch (userPreference.language)
    {
        case 0:
            GenericHelper.changeLanguage(context, "de");
            break;
        case 1:
            GenericHelper.changeLanguage(context, "en");
            break;
        case 2:
            GenericHelper.changeLanguage(context, "fr");
            break;
        case 3:
            GenericHelper.changeLanguage(context, "pl");
            break;
    }
    setContentView(R.layout.activity_get_signature);

使用新的支持库根据区域设置更改应用程序语言

Change App languages based on Locale using the new support libraries

android

android-support-library