带有自定义适配器搜索的Android ListView无法工作

Question

我正在尝试在ndroid ListView上应用搜索，但它对我不起作用，这里是我尝试的代码。

final ArrayList<Users> uData = new ArrayList<Users>();
listView = (ListView) findViewById(R.id.listView1);
listView.setAdapter(new CustomListAdapter(this, uData));

searchBox.addTextChangedListener(new TextWatcher() {

            @Override
            public void onTextChanged(CharSequence cs, int arg1, int arg2, int arg3) {
                // When user changed the Text
                ((Filterable) ViewInfo.this.listView.getAdapter()).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                         
            }


        });

下面是Users类

public class Users implements Serializable 
{
private String name;
private String date;
private String email;
private String image;


public String getName() {
    return name;
}
public void setName(String name) {
    this.name = name;
}
public String getDate() {
    return date;
}
public void setDate(String date) {
    this.date = date;
}
public String getEmail() {
    return email;
}
public void setEmail(String email) {
    this.email = email;
}
public String getimage() {
    return image;
}
public void setimage(String image) {
    this.image = image;
}

public class CustomListAdapter extends BaseAdapter {

    private ArrayList<Users> listData;
     private LayoutInflater layoutInflater;
     Users Act = new Users();

     public CustomListAdapter(Context context, ArrayList<Users> listData) {
            this.listData = listData;
            layoutInflater = LayoutInflater.from(context);
        }

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

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

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

        public View getView(int position, View convertView, ViewGroup parent) {
            ViewHolder holder;
            if (convertView == null) {
                convertView = layoutInflater.inflate(R.layout.list_row, null);
                holder = new ViewHolder();
                holder.picView = (ImageView) convertView.findViewById(R.id.pic);
                holder.dateView = (TextView) convertView.findViewById(R.id.date);
                holder.nameView = (TextView) convertView.findViewById(R.id.name);
                holder.emailView = (TextView) convertView.findViewById(R.id.email);

                convertView.setTag(holder);
            } else {
                holder = (ViewHolder) convertView.getTag();
            }

            Users act = listData.get(position);

            holder.picView.setImageBitmap(decodeFile(act.getimage()));
            holder.dateView.setText(act.getDate());
            holder.nameView.setText(act.getName());
            holder.emailView.setText(act.getEmail());


            return convertView;
        }

        static class ViewHolder {
            ImageView picView;

            TextView dateView;
            TextView emailView;
            TextView nameView;

        }
      }

04-28 15:55:52.677: E/AndroidRuntime(25953): FATAL EXCEPTION: main
04-28 15:55:52.677: E/AndroidRuntime(25953): java.lang.ClassCastException: com.assignment1.reginfo.CustomListAdapter cannot be cast to android.widget.Filterable
04-28 15:55:52.677: E/AndroidRuntime(25953):    at com.assignment1.reginfo.ViewInfo$4.onTextChanged(ViewInfo.java:186)
04-28 15:55:52.677: E/AndroidRuntime(25953):    at android.widget.TextView.sendOnTextChanged(TextView.java:7518)
04-28 15:55:52.677: E/AndroidRuntime(25953):    at android.widget.TextView.handleTextChanged(TextView.java:7580)
04-28 15:55:52.677: E/AndroidRuntime(25953):    at android.widget.TextView$ChangeWatcher.onTextChanged(TextView.java:9329)
04-28 15:55:52.677: E/AndroidRuntime(25953):    at android.text.SpannableStringBuilder.sendTextChanged(SpannableStringBuilder.java:962)
04-28 15:55:52.677: E/AndroidRuntime(25953):    at android.text.SpannableStringBuilder.replace(SpannableStringBuilder.java:496)

Answer 1

您使用的适配器不能与筛选器一起工作。它只适用于ArrayAdapter。因此您可以使用ArrayAdapter或编写自己的代码来过滤数据。