如何迭代Arraylist<HashMap<String,String&

How to iterate Arraylistlt;HashMaplt;String,Stringgt;gt;?(如何迭代Arraylistlt;HashMaplt;String,Stringgt;gt;?)

问题描述

我有一个这样的 ArrayList 对象:

I have an ArrayList object like this:

ArrayList<HashMap<String, String>> data = new ArrayList<HashMap<String, String>>();

如何遍历列表?我想在 TextView 中显示来自 ArrayList 对象数据的值.

How to iterate through the list? I want to display the value in a TextView which comes from the data of ArrayList object.

推荐答案

最简单的就是遍历ArrayList中所有的HashMap，然后遍历所有的key在地图中:

Simplest is to iterate over all the HashMaps in the ArrayList and then iterate over all the keys in the Map:

TextView view = (TextView) view.findViewById(R.id.view);

for (HashMap<String, String> map : data)
     for (Entry<String, String> entry : map.entrySet())
         view.append(entry.getKey() + " => " + entry.getValue());

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