基于BaseAdapter的安卓过滤BaseAdapter

Question

在这个例子中，我们需要实现filter视图的代码。我们使用两个类：Car.java (包含对象车)，Class CarAdapter扩展BaseAdapter类。以下是一些代码：

Car.java

public class Car {

public String title;
public int car_id;

public Car(String title,int car_id) {
    this.title = title;
    this.car_id = car_id;
}

}

CarAdapter.java

public class CarAdapter extends BaseAdapter {

private List<Car> mCarList;
private LayoutInflater mInflater;

public CarAdapter(List<Car> list, LayoutInflater inflater) {
    mCarList = list;
    mInflater = inflater;
}

@Override
public int getCount() {
    return mCarList.size();
}

@Override
public Object getItem(int position) {
    return mCarList.get(position);
}

@Override
public long getItemId(int position) {
    return position;
}

@Override
public View getView(int position, View convertView, ViewGroup parent) {
    final ViewItem item;

    if (convertView == null) {
        convertView = mInflater.inflate(R.layout.prototype, null);
        item = new ViewItem();


        item.CarTitle = (TextView) convertView
                .findViewById(R.id.TextViewPrototype);

        convertView.setTag(item);
    } else {
        item = (ViewItem) convertView.getTag();
    }

    Car curCar = mCarList.get(position);

    item.CarTitle.setText(curCar.title);    

    return convertView;
}

private class ViewItem {
    TextView CarTitle;
}

}

CarActivity.java

 public class ActivityCar extends Activity {

private List<Car> mCarList;
private EditText et;
/** Called when the activity is first created. */
@Override
public void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    setContentView(R.layout.car);
    // Obtain a reference to the product catalog
    mCarList = CarHelper.getCar(getResources());
    // Create the list
    ListView listViewCatalog = (ListView) findViewById(R.id.list_car);
    listViewCatalog.setAdapter(newCarAdapter(mCarList,getLayoutInflater)));

}   
}

谢谢你的帮助。

Answer 1

按照以下步骤使listview可过滤：

1. 在CarAdapter.java中实现可过滤接口。看看类似的问题，这里回答了。
2. 在CarActivity.java中，将Listview适配器设置为可过滤。 listViewCatalog.setTextFilterEnabled(true);
3. 如果您使用了android.widget.SearchView，那么实现SearchView.OnQueryTextListener或者如果您使用EditText，那么实现TextWatcher接口。