在Android中查询列表查看

我试图在this教程后添加一个搜索ListView的功能。问题是，当我在搜索EditText中输入内容时，我无法显示任何内容。我希望能够显示用户正在搜索的内容，但这不是正在发生的事情。我需要对以下代码进行哪些更改才能实现？在Android中查询列表查看

代码：

private void loadList() 
{ 
    Cursor res = tbl_business_desc.getRegisterData(); 
    int count = res.getCount(); 
    lvListItemsData = new android.projects.helper.mylist.ListViewItems[count]; 
    res.moveToFirst(); 
    for (int i = 0; i < count; i++) 
    { 
     String ControlNum = res.getString(res.getColumnIndex(tbl_business_desc.col_ControlNum)); 
     String BizName  = res.getString(res.getColumnIndex(tbl_business_desc.col_BizName)); 
     String Owner  = res.getString(res.getColumnIndex(tbl_business_desc.col_Owner)); 
     String Add   = res.getString(res.getColumnIndex(tbl_business_desc.col_Add)); 
     String Tel   = res.getString(res.getColumnIndex(tbl_business_desc.col_Tel)); 
     String Email  = res.getString(res.getColumnIndex(tbl_business_desc.col_Email)); 
     lvListItemsData[i] = new android.projects.helper.mylist.ListViewItems(ControlNum,BizName,Owner,Add,Tel,Email); 
     res.moveToNext(); 
    } 
    lvList = (ListView) findViewById(R.id.lvMylist); 
    inputSearch = (EditText) findViewById(R.id.inputSearch); 

    // Set the adapter to our ListView 
    lvListadapter = new android.projects.helper.list.ListViewItemsAdapter(this, R.layout.listview_item_row_masterlist_body, lvListItemsData); 
    lvList.setAdapter(lvListadapter); 

    /** 
    * Enabling Search Filter 
    * */ 
    inputSearch.addTextChangedListener(new TextWatcher() { 

     @Override 
     public void onTextChanged(CharSequence cs, int arg1, int arg2, int arg3) { 
      // When user changed the Text 
      MyListActivity.this.lvListadapter.getFilter().filter(cs); 
     } 

     @Override 
     public void beforeTextChanged(CharSequence arg0, int arg1, int arg2, int arg3) { 
      // TODO Auto-generated method stub 
     } 

     @Override 
     public void afterTextChanged(Editable arg0) { 
      // TODO Auto-generated method stub 
     } 
    }); 

    lvList.setOnItemClickListener(new AdapterView.OnItemClickListener() 
    { 
     public void onItemClick(AdapterView<?> parent, View view, int position, long id) 
     { 
      showStatus(position); 
     } 
    }); 
}

ListViewItemAdapter代码

public class ListViewItemsAdapter extends ArrayAdapter<ListViewItems> { 

    Context mContext; 
    int layoutResourceId; 
    ListViewItems data[] = null; 

    public ListViewItemsAdapter(Context mContext, int layoutResourceId, ListViewItems[] data) { 

     super(mContext, layoutResourceId, data); 
     this.layoutResourceId = layoutResourceId; 
     this.mContext = mContext; 
     this.data = data; 
    } 

    @Override 
    public View getView(int position, View convertView, ViewGroup parent) { 

     View listItem = convertView; 
     LayoutInflater inflater = ((Activity) mContext).getLayoutInflater(); 
     listItem = inflater.inflate(layoutResourceId, parent, false); 

     // get the elements in the layout 
     TextView textControlNum = (TextView) listItem 
       .findViewById(R.id.txtControlNum); 

     TextView textBizName = (TextView) listItem 
       .findViewById(R.id.txtBizName); 

     TextView textOwner = (TextView) listItem 
       .findViewById(R.id.txtOwner); 

     TextView textAdd = (TextView) listItem 
       .findViewById(R.id.txtAdd); 

     TextView textTel = (TextView) listItem 
       .findViewById(R.id.txtTel); 

     TextView textEmail = (TextView) listItem 
       .findViewById(R.id.txtEmail); 


     ListViewItems listViewItems = data[position]; 

     try { 
      textControlNum.setText(listViewItems.ControlNum); 
      textBizName.setText(listViewItems.BizName); 
      textOwner.setText(listViewItems.Owner); 
      textAdd.setText(listViewItems.Add); 
      textTel.setText(listViewItems.Tel); 
      textEmail.setText(listViewItems.Email); 

     } 
     catch (Exception e){} 

     if(position % 2 == 0){ 
      listItem.setBackgroundColor(Color.rgb(243,251,254)); 
     }else{ 
      listItem.setBackgroundColor(Color.rgb(255,255,255)); 
     } 
     return listItem; 
    } 


}

来源

2017-09-06 LadyWinter

在onCreate方法的活动中写入监听器代码 –

仍是同样的问题，在搜索文本中输入时没有结果。 – LadyWinter

你能显示'ListViewItemsAdapter'吗？ – KeLiuyue

您可能需要在您的适配器类overrride过滤器。请参阅this SO回答。希望这会有所帮助。

来源

2017-09-06 03:44:32 Aveek

首先，在线路

MyListActivity.this.lvListadapter.getFilter().filter(cs);

添加一个破发点，看该事件是否已被改变文本触发。

其次，你可以在ArrayFilter的源代码中看到的，它通过代码过滤项目

if (valueText.startsWith(prefixString)) { 
         newValues.add(value); 
        } else { 
         final String[] words = valueText.split(" "); 
         for (String word : words) { 
          if (word.startsWith(prefixString)) { 
           newValues.add(value); 
           break; 
          } 
         } 
        }

因此，如果没有什么离开了，这也许是因为，它应该是所剩无几。

来源

2017-09-06 06:14:59

在Android中查询列表查看

回答

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