Question

我有一个可扩展的列表视图，它是动态生成的，而子列表包含另一组值，我需要在子列表上设置一个onChildClickListener，以便传递一个web意图，其中包含保存在数据中的特定URL。每个孩子名单。因此，我需要在每个OnChildClickListener事件上访问子列表的值。

请帮忙!! PS：如果需要进一步的解释或代码，请发表评论。

    @Override
    protected void onPostExecute(JSONObject result)
    {
        dialog.dismiss();

        onPostCreate(new Bundle());
        List<Map<String, String>> groupData = new ArrayList<Map<String, String>>();
        List<List<Map<String, String>>> childData = new ArrayList<List<Map<String, String>>>();

        try
        {   
            JSONObject data = result.getJSONObject("data");

            else
            {
                JSONArray jarray = data.getJSONArray("data");   

                for (int i = 0; i < jarray.length(); i++)
                {
                    JSONObject obj = (JSONObject) jarray.get(i);

                    String taskId = obj.getString("taskId");    
                    String taskSub = obj.getString("taskSubject");



                    String v1= "Task Subject :"+taskSub;

                    Map<String, String> curGroupMap = new HashMap<String, String>();   
                    groupData.add(curGroupMap);   
                    curGroupMap.put(TAG,v1); 

                    List<Map<String, String>> children = new ArrayList<Map<String, String>>();      

                        Map<String, String> curChildMap = new HashMap<String, String>();   
                        children.add(curChildMap);  
                        curChildMap.put(TAG,"               "+taskId);
                        childData.add(children); 

        }
                //ADAPTER SETTINGS
                  mAdapter = new SimpleExpandableListAdapter(           
                            Search.this,               
                            groupData,       
                            android.R.layout.simple_expandable_list_item_1,       
                            new String[] { TAG },     
                            new int[] { android.R.id.text1},   

                            childData,            
                            android.R.layout.simple_expandable_list_item_2,    
                            new String[] { TAG },     
                            new int[] { android.R.id.text1 }  
                            );      
                    setListAdapter(mAdapter); 
                    getExpandableListView().setOnChildClickListener(Search.this);           
        }
        } 
        catch (JSONException je)
        {
            je.printStackTrace();
            Log.d(TAG, "Error: " + je.getMessage());
        }       
    }
}

        @Override
        public boolean onChildClick(ExpandableListView parent, View v, int groupPosition,
                int childPosition, long id) 
        {               
            Uri webpage = Uri.parse("URL"+taskId);

              //I want to add the taskId i am extracting in my dynamic expandable list in the URL, therefore each URL will be unique according to the taskId.

            Intent webIntent = new Intent(Intent.ACTION_VIEW, webpage);
            PackageManager packageManager = getPackageManager();
            List<ResolveInfo> activities = packageManager.queryIntentActivities(webIntent, 0);
            boolean isIntentSafe = activities.size() > 0;
                if (isIntentSafe) 
                {
                 startActivity(webIntent);
                }

            return true;
        }

Answer 1

为子点击侦听器添加侦听器

getExpandableListView().setOnChildClickListener(this);

为点击监听器添加代码。

@Override
public boolean onChildClick(ExpandableListView parent, View v, int groupPos, int childPos, long id) {
   // use groupPosition and childPosition to get the item data from adapter.
   return true;
}

在适配器中添加此代码

@Override
//gets the name of each item
public Object getChild(int i, int i1) {         
   return dataList.get(i).getArrayChildren().get(i1);
}

如何使用onChildClickListener在expandablelistview中提取子元素的值？

1 个答案: