android - 将 ImageView 动态添加到 ListView

Question

我有一个 ListView ，我将通过我的适配器向每一行添加一些 ImageView ；当我运行我的程序时，它没有给出任何错误，但是它向 ListView 添加了错误数量的 ImageView ，而且当我滚动 ListView 时， ImageView 的数量发生了变化!我的适配器类如下所示:

public class RideAdapter extends ArrayAdapter {
List list = new ArrayList();
public RideAdapter(Context context, int resource){
    super(context, resource);
}

public void add(Rides object) {
    super.add(object);
    list.add(object);
}

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

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

@Override
public View getView(int position, View convertView, ViewGroup parent) {
    View row;
    row = convertView;
    RideHolder rideHolder;
    if(row == null){

        LayoutInflater layoutInflater = (LayoutInflater) this.getContext().getSystemService(Context.LAYOUT_INFLATER_SERVICE);
        row = layoutInflater.inflate(R.layout.list_row, parent, false);
        rideHolder = new RideHolder();
        rideHolder.tx_start = (TextView)row.findViewById(R.id.tx_start);
        rideHolder.tx_end = (TextView)row.findViewById(R.id.tx_end);
        rideHolder.tx_seats = (TextView)row.findViewById(R.id.tx_seats);
        rideHolder.tx_distance = (TextView)row.findViewById(R.id.tx_distance);
        rideHolder.tx_name = (TextView)row.findViewById(R.id.tx_name);
        rideHolder.linearLayout_seats = (LinearLayout) row.findViewById(R.id.linearLayout_seats);
        row.setTag(rideHolder);
    }
    else {
        rideHolder = (RideHolder) row.getTag();
    }
    Rides ride = (Rides) this.getItem(position);
    rideHolder.tx_start.setText(ride.getStart());
    rideHolder.tx_end.setText(ride.getEnd());
    rideHolder.tx_name.setText(ride.getName());

    for(int i = 0; i < ride.getSeats(); i++) {
        ImageView image = new ImageView(this.getContext());
        image.setImageResource(R.drawable.empty_seat);
        rideHolder.linearLayout_seats.addView(image);
    }
    return row;
}

static class RideHolder{
    TextView tx_start, tx_end, tx_seats, tx_distance, tx_name;
    LinearLayout linearLayout_seats;
}

谁能帮帮我？

谢谢

Answer 1

就在将 View 添加到布局之前从布局中移除所有 View

 Rides ride = (Rides) this.getItem(position);
 rideHolder.tx_start.setText(ride.getStart());
 rideHolder.tx_end.setText(ride.getEnd());
 rideHolder.tx_name.setText(ride.getName());

 rideHolder.linearLayout_seats.removeAllViews();

 for(int i = 0; i < ride.getSeats(); i++) {
    ImageView image = new ImageView(this.getContext());
    image.setImageResource(R.drawable.empty_seat);
    rideHolder.linearLayout_seats.addView(image);
 }
 return row;