java - 如何按输入顺序保存和检索共享首选项中的数据？

Question

如何在java中按输入顺序保存和检索共享首选项中的数据？

当我将此类数据保存在共享首选项中时

 HashMap<Integer, String> likes = new HashMap<Integer, String>();

    // THIS IS INPUT ORDER

    likes.put(1,"a")
    likes.put(2,"b")
    likes.put(3,"c")
    likes.put(4,"d")
        editor = getSharedPreferences("PREFS_NAM", 0).edit();
        for (Map.Entry<Integer, String> entry : likes.entrySet())
         editor.putString(String.valueOf((entry.getKey())), 
         entry.getValue());
        editor.apply();

当我检索它时

SharedPreferences prefs = getSharedPreferences("PREFS_NAM", 0);
    for (Map.Entry entry : prefs.getAll().entrySet()) 
           likes.put(Integer.valueOf(entry.getKey().toString()), 
           entry.getValue().toString());

看起来像

(1,"a")
(2,"b")
(4,"d")
(3,"c")

输入顺序不同!

Answer 1

尝试以下操作 Map<Integer, String> likes = new LinkedHashMap<Integer, String>();LinkedHashMap 的设计目的是为了保持键、值和条目的放置顺序。