Android应用程序主题未在所有活动上设置

Question

我一直致力于在当前应用程序中实现主题转换器。

我有一个首选项屏幕设置，允许用户在两​​个主题之间进行选择，黑暗和浅色。

我的活动是这样设置的;

• 活动A是主要活动，并启动活动B和C.
• 活动B＆amp; C持有一个加载多个片段的ViewPager

现在我遇到了活动A的问题。似乎是将更改的主题仅应用于ActionBar上的Action overflow（下拉框）（下面的截图）

我在活动的onCreate方法中设置了该组。

正如您所看到的，只有溢出应用了灯光主题。

这是我的ThemeUtils类。

public class ThemeUtils
{
  public final static int THEME_DEFAULT = 0;
  public final static int THEME_LIGHT = 1;
  public final static int THEME_DARK = 2;

  private static int mTheme;

  /**
   * Sets the theme of the activity and restarts it by creating a new Activity of the same type.
   * @param activity Activity that initiates the theme change
   * @param theme An int value to identify which theme to change to - (use ThemeUtils constants)
   */
  public static void changeToTheme( final Activity activity, final int theme )
  {
    mTheme = theme;
    finishAndRestartActivity( activity );
  }

  /**
   * Sets the theme of the activity, according to the value of mTheme
   * @param activity The activity to set the theme to
   */
  public static void setTheme( final Activity activity )
  {
    switch ( mTheme )
    {
      case THEME_LIGHT:
        activity.setTheme( R.style.Result_Theme_Light );
        break;
      case THEME_DARK:
        activity.setTheme( R.style.Result_Theme_Dark );
        break;

      default:
      case THEME_DEFAULT:
        activity.setTheme( R.style.Result_Theme_Dark );
        break;
    }
  }

  public static int getTheme()
  {
    return mTheme;
  }

  public static boolean canSetThemeFromPrefs( final Activity activity )
  {
    boolean result = false;
    SharedPreferences prefMngr = PreferenceManager.getDefaultSharedPreferences( activity );
    if ( prefMngr.contains( "theme_pref" ) )
    {
      result = true;
    }
    return result;
  }

  public static int getThemeFromPrefs( final Activity activity )
  {
        SharedPreferences preferences = PreferenceManager.getDefaultSharedPreferences( activity );
    final String themeFromPrefs = preferences.getString( "theme_pref", "theme_default" );
    if ( themeFromPrefs.equals( "theme_light" ) )
    {
      mTheme = THEME_LIGHT;
    }
    else if ( themeFromPrefs.equals( "theme_dark" ) )
    {
      mTheme = THEME_DARK;
    }
    else
    {
      mTheme = THEME_DEFAULT;
    }

    return getTheme();
  }

  public static int getThemeFromPrefs( final String key )
  {
    if ( key.equals( "theme_light" ) )
    {
      mTheme = THEME_LIGHT;
    }
    else if ( key.equals( "theme_dark" ) )
    {
      mTheme = THEME_DARK;
    }
    else
    {
      mTheme = THEME_DEFAULT;
    }

    return getTheme();
  }

  private static void finishAndRestartActivity( final Activity activity )
  {
    activity.finish();
    activity.startActivity( new Intent( activity, activity.getClass() ) );
  }
}

任何提示/想法？

谢谢， 萨姆。