如何从列表视图中的一个paramater [英] How to get one paramater from list view

问题描述

我从JSON数据列表视图

i get data from json to list view

for (int i = 0; i < following.length(); i++) {
                JSONObject c = following.getJSONObject(i);

                // Storing each json item in variable
                String nama = c.getString(KEY_NAMA);
                String instansi = c.getString(KEY_INSTANSI);
                String status = c.getString(KEY_STATUS);
                id_user = c.getString(KEY_ID_USER);

                // creating new HashMap
                HashMap<String, String> map = new HashMap<String, String>();

                // adding each child node to HashMap key => value
                map.put(KEY_NAMA, nama);
                map.put(KEY_INSTANSI, instansi);
                map.put(KEY_STATUS, status);
                map.put(KEY_ID_USER, id_user);
                // adding HashList to ArrayList
                followingList.add(map);

            }

和行动，如果在列表视图点击

and action if listview on click

list = (ListView) activity.findViewById(R.id.listView1);
        // Getting adapter by passing xml data ArrayList
        adapter1 = new LazyAdapter(activity, followingList);
        list.setAdapter(adapter1);

        list.setOnItemClickListener(new OnItemClickListener() {

            public void onItemClick(AdapterView<?> parent, View view, int position, long id) {
                Intent profil = new Intent(activity.getApplicationContext(),
                        ProfilFollower.class);
                profil.putExtra("id_user", id_user);
                profil.addFlags(Intent.FLAG_ACTIVITY_CLEAR_TOP);
                activity.startActivity(profil);
                // Closing dashboard screen
                activity.finish();
            }
        }); 

我的问题如何从列表视图id_user拿到如果点击发送id_user paramater的意图

My question how to get id_user from list view to get if on click and send id_user paramater for intent

推荐答案

您可以使用以下

在您onItemClick（PARAMS）方法

In your onItemClick(params) methods

  Intent profil = new Intent(ActivityName.this,
                   ProfilFollower.class);
  profil.putExtra("id_user",      
  followingList.get(position).map.get(KEY_ID_USER).toString());  
  //map.get(KEY_ID_USER) where KEY_ID_USER is the key 

另外声明

     HashMap<String, String> map = new HashMap<String, String>();

的onCreate（）在活动类中之前

before onCreate() inside the activity class

此外，使用此condiditon如果（followingList.size（）> =位置）作为ρяσѕρєяK的他的回答提出。要知道为什么条件是必要的检查意见在ρяσѕρєяK公司的答案

Also use this condiditon if(followingList.size()>=position) as ρяσѕρєя K suggested in his answer. To know why the condition is necessary check the comment's in ρяσѕρєя K's answer

另外，请检查下面的链接和commonsware回答。使用Activity上下文到位getApplicationContext的（）

Also check the link below and answer by commonsware. Use Activity context in place of getApplicationContext()

<一个href=\"http://stackoverflow.com/questions/7298731/when-to-call-activity-context-or-application-context\">When调用活动上下文或应用程序上下文？

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