如何以编程方式在android google maps v2中更改语言

Question

我有一个应用程序，您可以从设置中更改区域设置（目的是能够在应用程序内部具有与系统区域设置不同的区域设置），而我希望能够设置地图的语言。我只能找到像“设置您的手机的系统语言”，这不是我正在寻找的答案。有没有一种方法来设置地图的语言编程或从XML？

public class LocalizedActivity extends FragmentActivity { 
    private GoogleMap map; 

    protected void onCreate(Bundle savedInstanceState) { 
     super.onCreate(savedInstanceState); 

     // you need to call this ASAP: 
     setLocaleResources("iw"); 
     // after this most parts of the UI are localized, but not the map 

     setContentView(R.layout.main); 

     android.support.v4.app.FragmentManager sfm = getSupportFragmentManager(); 
     final Fragment f = sfm.findFragmentById(R.id.map); 
     final SupportMapFragment mf = (SupportMapFragment) f; 
     map = mf.getMap(); 
    } 

    static void setLocaleResources(final String languageCode) { 
     final Context context = RedAlert.getContext(); 
     Resources res = context.getResources(); 
     // Change locale settings in the app. 
     DisplayMetrics dm = res.getDisplayMetrics(); 
     android.content.res.Configuration conf = res.getConfiguration(); 
     conf.locale = new Locale(languageCode); 
     if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.JELLY_BEAN_MR1) { 
      conf.setLayoutDirection(conf.locale); 
     } 
     res.updateConfiguration(conf, dm); 
    } 

的main.xml：

<fragment xmlns:android="http://schemas.android.com/apk/res/android" 
     android:id="@+id/map" 
     android:layout_width="match_parent" 
     android:layout_height="match_parent" 
     class="com.google.android.gms.maps.SupportMapFragment"/> 

Answer 1

public class MapActivity extends AppCompatActivity { 
    @Override 
    protected void onCreate(Bundle savedInstanceState) { 
     super.onCreate(savedInstanceState); 
     settings.setLocaleResources(getContext()); 
    } 
} 

public class Settings { 
    final static String PREF_LOCALE = "locale"; 
    final Static String DEFAULT_LOCALE_STRING = "en_US"; 

    void setLocaleResources(final Context context) { 
     String localeString = PreferenceManager 
      .getDefaultSharedPreferences(context) 
      .getString(PREF_LOCALE, DEFAULT_LOCALE_STRING); 
     Resources res = context.getResources(); 
     // Change locale settings in the app. 
     DisplayMetrics dm = res.getDisplayMetrics(); 
     Locale locale = getLocale(localeString); 
     Locale.setDefault(locale); // this is needed to change even the map's language 
     Configuration conf = res.getConfiguration(); 
     conf.locale = locale; 
     if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.JELLY_BEAN_MR1) { 
      conf.setLayoutDirection(conf.locale); 
     } 
     res.updateConfiguration(conf, dm); 
     return res; 
    } 

    private static Locale getLocale(final String language2_COUNTRY2) { 
     Locale locale; 
     if (null == language2_COUNTRY2 || language2_COUNTRY2.isEmpty() || DEFAULT_LOCALE_STRING.equals(language2_COUNTRY2)) { 
      locale = MyApp.getSystemLocale(); 
     } else { 
      final String language = language2_COUNTRY2.substring(0, 2).toLowerCase(Locale.ENGLISH); 
      final String country = language2_COUNTRY2.substring(3, 5).toUpperCase(Locale.ENGLISH); 
      if (null == country || country.length() != 2) { 
       locale = locales.get(language); 
       if (null == locale) { 
        locale = new Locale(language); 
        locales.put(language, locale); 
       } 
      } else { 
       locale = locales.get(language + '_' + country); 
       if (null == locale) { 
        locale = new Locale(language, country); 
        locales.put(language + '_' + country, locale); 
       } 
      } 
     } 
     return locale; 
    } 
} 

public class MyApp extends Application { 
    @Override 
    public void onCreate() { 
     defaultSystemLocale = Locale.getDefault(); 
     Settings.setLocaleResources(getContext()); 
    } 

    public static Locale getSystemLocale() { 
     return defaultSystemLocale; 
    } 
}