7

我有一个ListView. 它的每一行都包含 3TextView和 2 Button。在它上面我有一个EditText. ListView如何按每行第一行的值过滤我的值TextView？

4

3 回答 3

2

为列表视图创建一些数组列表。在“AddTextChangeListener”上，您可以搜索列表中的类似项目并为搜索的文本加载新的数组列表...

edittext.addTextChangedListener(new TextWatcher(){
public void afterTextChanged(Editable s) {
     //search for the keyword and add the items to a new arraylist
}
于 2012-05-30T12:52:01.233 回答
2

下面的代码使用自定义列表适配器。

我使用自定义列表适配器显示了 3 个文本视图。我制作了一个示例，它根据列表顶部的 editext 中的输入进行搜索。根据输入与每行的 textview1 中的数据进行比较，并相应地过滤和显示数据。

您可以在 listview 行中有其他项目，搜索可以基于 texview1/textview2 或 textview3。根据您的需要修改以下内容。

public class MainActivity extends Activity {
ArrayList<NewData> mTemp=new ArrayList<NewData>();
ArrayList<NewData> mPostingData=new ArrayList<NewData>();
ArrayList< NewData> mOri = new ArrayList<NewData>();

Myadapter ma;
EditText search;

NewData nd;

@Override
public void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    setContentView(R.layout.activity_main);


    for(int i = 0; i < 20; i++)
    {

        nd=new NewData();

        nd.newDatacus.put(NewData.TAG_CUSTOMER_CODE, "i"+i);
        nd.newDatacus.put(NewData.TAG_CUSTOMER_NAME, "a"+i);
        nd.newDatacus.put(NewData.TAG_CUSTOMER_MOBILE, "number");
        nd.newDatacus.put(NewData.TAG_CUSTOMER_ADDRESS, "address");
        mOri.add(nd);
    }

    ma= new Myadapter(MainActivity.this);
    mPostingData=mOri;
    mTemp=mOri;
    ListView lv= (ListView) findViewById(R.id.list);
    lv.setAdapter(ma);
    search= (EditText) findViewById(R.id.search);
    search.addTextChangedListener(new TextWatcher() {

        public void onTextChanged(CharSequence s, int start, int before, int count) {
            ma.getFilter().filter(s);
            ma.notifyDataSetChanged();

        }

        public void beforeTextChanged(CharSequence s, int start, int count,
                int after) {


        }

        public void afterTextChanged(Editable s) {
        }
    });


}



class Myadapter extends ArrayAdapter
{
    LayoutInflater mInflater;


    public void setData(ArrayList<NewData> mPpst) {   
        mPostingData = mPpst;//contains class items data.
    }

    @Override
    public Filter getFilter() {
        return new Filter() {
            @Override
            protected void publishResults(CharSequence constraint, FilterResults results) {
                if (results != null && results.count >= 0) {
                    setData((ArrayList<NewData>) results.values);//if results of search is null set the searched results data
                } else {
                    setData(mOri);// set original values
                }

                notifyDataSetInvalidated();
            }



            @Override
            protected FilterResults performFiltering(CharSequence constraint) {
                FilterResults result = new FilterResults();
                if (!TextUtils.isEmpty(constraint)) {
                    constraint = constraint.toString().toLowerCase();
                    ArrayList<NewData> foundItems = new ArrayList<NewData>();
                    if(mTemp!=null)
                    {
                        for(int i=0;i<mTemp.size();i++)
                        {

                            if (mTemp.get(i).newDatacus.get(NewData.TAG_CUSTOMER_CODE).toString().contains(constraint)) {
                                System.out.println("My datas"+mTemp.get(i).newDatacus.get(NewData.TAG_CUSTOMER_CODE).toString());
                                foundItems.add(mTemp.get(i));

                            }
                            else
                            {

                            }
                        }
                    }
                    result.count = foundItems.size();//search results found return count
                    result.values = foundItems;// return values
                } 
                else
                {
                    result.count=-1;// no search results found
                }


                return result;
            }
        };
    }
    public Myadapter(Context context) {
        super(context, 0);
        mInflater = (LayoutInflater)context.getSystemService(Context.LAYOUT_INFLATER_SERVICE);
        // TODO Auto-generated constructor stub
    }

    @Override
    public int getCount() {
        // TODO Auto-generated method stub
        return mPostingData.size();
    }

    @Override
    public Object getItem(int position) {
        // TODO Auto-generated method stub
        return position;
    }

    @Override
    public long getItemId(int position) {
        // TODO Auto-generated method stub
        return 0;
    }

    @Override
    public View getView(int position, View convertView, ViewGroup parent) {
        // TODO Auto-generated method stub
        ViewHolder holder;


        if(mOri == null ){

            return null;
        }
        // When convertView is not null, we can reuse it directly, there is no need
        // to reinflate it. We only inflate a new View when the convertView supplied
        // by ListView is null.
        if (convertView == null) {
            convertView = mInflater.inflate(R.layout.list, null);
            convertView.setLayoutParams(new AbsListView.LayoutParams(LayoutParams.FILL_PARENT,
                    LayoutParams.WRAP_CONTENT));
            // Creates a ViewHolder and store references to the two children views
            // we want to bind data to.
            holder = new ViewHolder();
            holder.t1=(TextView) convertView.findViewById(R.id.textView1);
            holder.t2 = (TextView) convertView.findViewById(R.id.textView2);
            holder.t3 = (TextView) convertView.findViewById(R.id.textView3);

            convertView.setTag(holder);
        } else {
            // Get the ViewHolder back to get fast access to the TextView
            // and the ImageView.
            holder = (ViewHolder) convertView.getTag();
        }
        holder.t1.setText(mPostingData.get(position).newDatacus.get(NewData.TAG_CUSTOMER_CODE).toString());
        holder.t2.setText(mPostingData.get(position).newDatacus.get(NewData.TAG_CUSTOMER_NAME).toString());
        holder.t3.setText(mPostingData.get(position).newDatacus.get(NewData.TAG_CUSTOMER_MOBILE).toString());
        return convertView;
    }
}
class ViewHolder
{
    TextView t1,t2,t3;
}

主.xml

<?xml version="1.0" encoding="utf-8"?>


<EditText
    android:id="@+id/search"
    android:layout_width="fill_parent"
    android:layout_height="wrap_content" />

<ListView
    android:id="@+id/list"
    android:layout_width="fill_parent"
    android:layout_height="wrap_content" />

List.xml //要膨胀的xml

<TextView
    android:id="@+id/textView1"
    android:layout_width="wrap_content"
    android:layout_height="wrap_content"
    android:paddingLeft="20dp"
    android:text="TextView" />

<TextView
    android:id="@+id/textView2"
    android:layout_width="wrap_content"
    android:layout_height="wrap_content"
    android:paddingLeft="20dp"
    android:text="TextView" />

<TextView
    android:id="@+id/textView3"
    android:layout_width="wrap_content"
    android:layout_height="wrap_content"
    android:paddingLeft="20dp"
    android:text="TextView" />

新数据类

 public class NewData {
  public static final String TAG_CUSTOMER_CODE = "customer_code";
  public static final String TAG_CUSTOMER_NAME = "customer_name";
  public static final String TAG_CUSTOMER_MOBILE = "customer_mobile";
  public static final String TAG_CUSTOMER_ADDRESS = "customer_address";

  Hashtable newDatacus=new Hashtable();

  public NewData()
  {

    newDatacus.put(NewData.TAG_CUSTOMER_CODE,new String());
    newDatacus.put(NewData.TAG_CUSTOMER_ADDRESS,new String());
    newDatacus.put(NewData.TAG_CUSTOMER_NAME,new String());
    newDatacus.put(NewData.TAG_CUSTOMER_MOBILE,new String());
    newDatacus.put(NewData.TAG_CUSTOMER_ADDRESS,new String());




 }
}
于 2013-03-12T16:57:03.020 回答