我如何从android listview中获取值?
问题描述:
嗨,这是我的代码我想访问KEY_ID
,我把地图列表放在列表项中点击一个变量.. 请帮我我如何做到这一点。我如何从android listview中获取值?
ArrayList (HashMap) (String, String) mapList = new ArrayList(HashMap(String, String))();
XMLParser parser = new XMLParser();
Document doc = parser.getDomElement(xml);
// getting DOM element
NodeList nl = doc.getElementsByTagName(KEY_Route);
// looping through all song nodes <song>
for (int i = 0; i < nl.getLength(); i++) {
// creating new HashMap
HashMap<String, String> map = new HashMap<String, String>();
Element e = (Element) nl.item(i);
// adding each child node to HashMap key => value
map.put(KEY_ID, parser.getValue(e, KEY_ID));
map.put(KEY_SchoolName, parser.getValue(e, KEY_SchoolName));
map.put(KEY_ChildrenName, parser.getValue(e, KEY_ChildrenName));
map.put(KEY_AlertTime, parser.getValue(e, KEY_AlertTime));
map.put(KEY_RouteName, parser.getValue(e, KEY_RouteName));
map.put(KEY_Notification, parser.getValue(e, KEY_Notification));
map.put(KEY_StopName, parser.getValue(e, KEY_StopName));
// adding HashList to ArrayList
mapList.add(map);
}
list = (ListView) findViewById(R.id.list);
// Getting adapter by passing xml data ArrayList
adapter = new LazyAdapter(this, mapList);
list.setAdapter(adapter);
// Click event for single list row
list.setOnItemClickListener(new OnItemClickListener() {
@Override
public void onItemClick(AdapterView<?> parent, View view,
int position, long id) {
int idw = position;
long logss = id;
// There i want to access the KEY_ID..
} catch (Exception e) {
e.printStackTrace();
progressDialog.dismiss();
}
}
});
}
答
在你onItemClick方法,您需要从MAPLIST对象从特定位置出来取HaspMap:
HashMap<String, String> map = mapList.get(position);
//and then read values out from 'map' object
答
使用此代码来获取的位置选定的listitem。
ListView lv1 = (ListView) findViewById(R.id.ListView01);
lv1.setOnItemClickListener(new OnItemClickListener() {
public void onItemClick(AdapterView<?> a, View v, int position, long id) {
Object o = lv1.getItemAtPosition(position);
}
});
感谢兄弟我得到了我想要的价值感谢很多男人:) – 2012-04-10 12:24:24
但我已经把最终的maplist放在最前面了。 – 2012-04-10 12:25:15
这并不重要,因为你正在阅读的价值,而不是分配给它 – waqaslam 2012-04-10 12:45:26