哈希映射只返回最后一个键value

Question

我使用一个内部有HashMap的ArrayList来解析JSON并扩展动态UI。问题是只插入最后一个key和value。我不明白为什么。

这就是我在doInBackground() 中插入值的方式

for (JSONObject s : clientList) {
    Log.v("CHECKING S", s.toString());
    // Iterator containing all the keys
    Iterator<String> iterator = s.keys();
    while (iterator.hasNext()) {
        key = (String) iterator.next();
        value = s.getString(key);
        print("CHECKING VALUES 0: " + key);
        print("CHECKING VALUES 1: " + value);
        HashMap<String, String> map = new HashMap<String, String>();
        map.put(key, value);            
        mList.add(map);
    }
}

当我检查这些值时，它们都在那里，但当我像这样在onPostExecute()中膨胀时，只有一个在那里。

protected void onPostExecute(String string) {
    // dismiss the dialog
    pDialog.dismiss();
    LinearLayout welcome = (LinearLayout) findViewById(R.id.cLLayout3);
    welcome.setVisibility(View.GONE);
    for (int i = 0; i < mList.size(); i++) {
        // get HashMap
        HashMap<String, String> map = mList.get(i);
        Log.v("RESPONSE", "Creating Client Assessment");
        // find
        LinearLayout content = (LinearLayout) findViewById(R.id.c_add);
        // create
        TextView tv = new TextView(Client.this);
        TextView tv1 = new TextView(Client.this);
        LinearLayout client1 = new LinearLayout(Client.this);
        // set
        tv.setLayoutParams(new LinearLayout.LayoutParams(0,
        LinearLayout.LayoutParams.MATCH_PARENT, 1f));
        tv1.setLayoutParams(new LinearLayout.LayoutParams(0,
        LinearLayout.LayoutParams.MATCH_PARENT, 1f));
        client1.setLayoutParams(new LinearLayout.LayoutParams(
        LinearLayout.LayoutParams.MATCH_PARENT,
        LinearLayout.LayoutParams.MATCH_PARENT));
        tv.setText(map.get(key));
        Log.v("KEY", key);
        tv1.setText(map.get(value));
        Log.v("VALUE", value);
        client1.setOrientation(LinearLayout.HORIZONTAL);
        // add
        client1.addView(tv);
        client1.addView(tv1);
        content.addView(client1);
    }
}

我的布局只使用了两个TextViews，我的logcat显示了以下

06-28 12:05:06.024: V/RESPONSE(15300): Creating Client Assessment
06-28 12:05:06.024: V/KEY(15300): Tech Name
06-28 12:05:06.024: V/VALUE(15300):  Jon Doe
06-28 12:05:06.024: V/RESPONSE(15300): Creating Client Assessment
06-28 12:05:06.034: V/KEY(15300): Tech Name
06-28 12:05:06.034: V/VALUE(15300):  Jon Doe
06-28 12:05:06.034: V/RESPONSE(15300): Creating Client Assessment
06-28 12:05:06.034: V/KEY(15300): Tech Name
06-28 12:05:06.034: V/VALUE(15300):  Jon Doe
06-28 12:05:06.034: V/RESPONSE(15300): Creating Client Assessment
06-28 12:05:06.034: V/KEY(15300): Tech Name
06-28 12:05:06.034: V/VALUE(15300):  Jon Doe
06-28 12:05:06.034: V/RESPONSE(15300): Creating Client Assessment
06-28 12:05:06.044: V/KEY(15300): Tech Name
06-28 12:05:06.044: V/VALUE(15300):  Jon Doe
06-28 12:05:06.044: V/RESPONSE(15300): Creating Client Assessment
06-28 12:05:06.044: V/KEY(15300): Tech Name
06-28 12:05:06.044: V/VALUE(15300):  Jon Doe
06-28 12:05:06.044: V/RESPONSE(15300): Creating Client Assessment
06-28 12:05:06.044: V/KEY(15300): Tech Name
06-28 12:05:06.044: V/VALUE(15300):  Jon Doe
06-28 12:05:06.044: V/RESPONSE(15300): Creating Client Assessment
06-28 12:05:06.044: V/KEY(15300): Tech Name
06-28 12:05:06.044: V/VALUE(15300):  Jon Doe
06-28 12:05:06.044: V/RESPONSE(15300): Creating Client Assessment
06-28 12:05:06.044: V/KEY(15300): Tech Name
06-28 12:05:06.044: V/VALUE(15300):  Jon Doe
06-28 12:05:06.044: V/RESPONSE(15300): Creating Client Assessment
06-28 12:05:06.044: V/KEY(15300): Tech Name
06-28 12:05:06.044: V/VALUE(15300):  Jon Doe
06-28 12:05:06.044: V/RESPONSE(15300): Creating Client Assessment
06-28 12:05:06.044: V/KEY(15300): Tech Name
06-28 12:05:06.044: V/VALUE(15300):  Jon Doe
06-28 12:05:06.054: V/RESPONSE(15300): Creating Client Assessment
06-28 12:05:06.054: V/KEY(15300): Tech Name
06-28 12:05:06.054: V/VALUE(15300):  Jon Doe
06-28 12:05:06.054: V/RESPONSE(15300): Creating Client Assessment
06-28 12:05:06.054: V/KEY(15300): Tech Name
06-28 12:05:06.054: V/VALUE(15300):  Jon Doe
06-28 12:05:06.054: V/RESPONSE(15300): Creating Client Assessment
06-28 12:05:06.054: V/KEY(15300): Tech Name
06-28 12:05:06.054: V/VALUE(15300):  Jon Doe
06-28 12:05:06.054: V/RESPONSE(15300): Creating Client Assessment
06-28 12:05:06.054: V/KEY(15300): Tech Name
06-28 12:05:06.054: V/VALUE(15300):  Jon Doe
06-28 12:05:06.054: V/RESPONSE(15300): Creating Client Assessment
06-28 12:05:06.054: V/KEY(15300): Tech Name
06-28 12:05:06.054: V/VALUE(15300):  Jon Doe
06-28 12:05:06.054: V/RESPONSE(15300): Creating Client Assessment
06-28 12:05:06.054: V/KEY(15300): Tech Name
06-28 12:05:06.054: V/VALUE(15300):  Jon Doe
06-28 12:05:06.054: V/RESPONSE(15300): Creating Client Assessment
06-28 12:05:06.064: V/KEY(15300): Tech Name
06-28 12:05:06.064: V/VALUE(15300):  Jon Doe
06-28 12:05:06.064: V/RESPONSE(15300): Creating Client Assessment
06-28 12:05:06.064: V/KEY(15300): Tech Name
06-28 12:05:06.064: V/VALUE(15300):  Jon Doe
06-28 12:05:06.064: V/RESPONSE(15300): Creating Client Assessment
06-28 12:05:06.064: V/KEY(15300): Tech Name
06-28 12:05:06.064: V/VALUE(15300):  Jon Doe
06-28 12:05:06.064: V/RESPONSE(15300): Creating Client Assessment
06-28 12:05:06.064: V/KEY(15300): Tech Name
06-28 12:05:06.064: V/VALUE(15300):  Jon Doe
06-28 12:05:06.064: V/RESPONSE(15300): Creating Client Assessment
06-28 12:05:06.064: V/KEY(15300): Tech Name
06-28 12:05:06.064: V/VALUE(15300):  Jon Doe
06-28 12:05:06.064: V/RESPONSE(15300): Creating Client Assessment
06-28 12:05:06.064: V/KEY(15300): Tech Name
06-28 12:05:06.064: V/VALUE(15300):  Jon Doe
06-28 12:05:06.064: V/RESPONSE(15300): Creating Client Assessment
06-28 12:05:06.074: V/KEY(15300): Tech Name
06-28 12:05:06.074: V/VALUE(15300):  Jon Doe
06-28 12:05:06.074: V/RESPONSE(15300): Creating Client Assessment
06-28 12:05:06.074: V/KEY(15300): Tech Name
06-28 12:05:06.074: V/VALUE(15300):  Jon Doe
06-28 12:05:06.074: V/RESPONSE(15300): Creating Client Assessment
06-28 12:05:06.074: V/KEY(15300): Tech Name
06-28 12:05:06.074: V/VALUE(15300):  Jon Doe
06-28 12:05:06.074: V/RESPONSE(15300): Creating Client Assessment
06-28 12:05:06.074: V/KEY(15300): Tech Name
06-28 12:05:06.074: V/VALUE(15300):  Jon Doe
06-28 12:05:06.074: V/RESPONSE(15300): Creating Client Assessment
06-28 12:05:06.074: V/KEY(15300): Tech Name
06-28 12:05:06.074: V/VALUE(15300):  Jon Doe
06-28 12:05:06.074: V/RESPONSE(15300): Creating Client Assessment
06-28 12:05:06.084: V/KEY(15300): Tech Name
06-28 12:05:06.084: V/VALUE(15300):  Jon Doe
06-28 12:05:06.084: V/RESPONSE(15300): Creating Client Assessment
06-28 12:05:06.084: V/KEY(15300): Tech Name
06-28 12:05:06.084: V/VALUE(15300):  Jon Doe
06-28 12:05:06.084: V/RESPONSE(15300): Creating Client Assessment
06-28 12:05:06.084: V/KEY(15300): Tech Name
06-28 12:05:06.084: V/VALUE(15300):  Jon Doe
06-28 12:05:06.084: V/RESPONSE(15300): Creating Client Assessment
06-28 12:05:06.084: V/KEY(15300): Tech Name
06-28 12:05:06.084: V/VALUE(15300):  Jon Doe

怎么回事？我的HashMap在哪里被覆盖？

编辑

我看到了关于将代码更改为这个的答案

map.put(key, value);

如果我把代码改成上面的，那么logcat的结果几乎是一样的。因此，你可能是对的，但结果仍然是一样的，哈希图正在被覆盖。我认为这里的实际错误是在的这些线路上

key = (String) iterator.next();
value = s.getString(key);

如果您注意到key和value是在类的最顶部声明的Strings。我认为这些实际上是HashMap内部被重写的值。所以当我把它们像一样拔出来的时候

tv.setText(map.get(key));
Log.v("KEY", key);
tv1.setText(map.get(value));
Log.v("VALUE", value);

他们总是一样的。我说得对吗？如果是的话，我该如何解决？每次只需申报新的Strings？

Answer 1

如果键和值是需要存储在映射中的两个不同字段，那么我认为您的意思是：

    map.put("key", key);
    map.put("value", value);

除此之外，每次将映射添加到数组中时，都需要创建一个新的映射，否则您只会一遍又一遍地添加相同的映射，每次调用map.put时，都可能会覆盖先前已添加到数组的映射中的值。

    HashMap<String,String> map = new HashMap<String,String>();
    map.put("key", key);
    map.put("value", value);
    mList.add(map);

然后，当你再次把它们写出来时，你会像这样从地图上读出来：

    tv.setText(map.get("key"));
    tv1.setText(map.get("value"));

Answer 2

我认为你应该更改

 map.put(key, value);
 map.put(value, value);

带有

 map.put(key, value);

HashMap保存一对键和值。如果用同一个键插入多个项目，您将只找到最后一个

Answer 3

不应该

    map.put(key, key);
    map.put(value, value);

是

    map.put(key, value);

然后使用类似的内容：map.getKeys();查看所有键并获取值？