Question

寻找在Java中实现的方法，以定义每个索引具有不同类型的多维数组

像这样......

低于'值'和'活动'是相关的..但缺乏这种结构，它们是独立声明的。

final String[] values = new String[]{
        "Config",
        "Linking Twitter & Facebook",
        "Facebook Direct",
        "Twitter Direct",
        "Action Bar (Profiled)",
        "Sharing",
        "Comments",
        "Likes",
        "Views",
        "Entities",
        "User Profile (Profiled)",
        "Actions (User Activity)",
        "Subscriptions",
        "Location",
        "Init",
        "Tools"
    };

    final Class<?>[] activities = new Class<?>[]{
        AuthButtonsActivity.class,
        FacebookActivity.class,
        TwitterActivity.class,
        ActionBarActivity.class,
        ShareActivity.class,
        CommentActivity.class,
        LikeActivity.class,
        ViewActivity.class,
        EntityActivity.class,
        UserActivity.class,
        ActionActivity.class,
        SubscriptionActivity.class,
        LocationActivity.class,
        InitActivity.class,
        ToolsActivity.class
    };

应该声明这样的东西..如果java有支持..

Array<String, Class>[][] valueClasses = 

 final Array<String, Class>[][] valueClasses = new Array<String, Class>[][]{
        {  "Config",  AuthButtonsActivity.class },
    };

Answer 1

您可以使用Map接口的实现。您的初始化代码可以是这样的：

private static Map<String, Class<?>> assembleActivitiesMap() {
  Map<String, Class<?>> activities = new HashMap<String, Class<?>>();

  activities.put("Config", AuthButtonsActivity.class);
  activities.put("Facebook", FacebookActivity.class);
  ...
  return activities;

private final Map<String, Class<?>> activities = assembleActivitiesMap();

Answer 2

不确定我是按照您要求的方式进行的，但请查看Google Guava中的馆藏。 Multimap可能就是你要找的东西。

多类型，多维数组

2 个答案: