Question

我在以下链接中使用了我的应用程序中的代码：

http://www.tutorialsbuzz.com/2014/03/watsapp-custom-listview-imageview-textview-baseadapter.html

但是当我使用CustomAdapter时，将ListView设置为此适配器， ListView不显示Member_name数组中的所有对象。

它的作用是，只显示该数组中的前9个对象，然后它从头开始重复显示这9个对象，反复显示，与数组大小一样多。

你能帮帮我吗？感谢。

修改

你问我的具体代码，所以：

import android.app.Activity;
import android.content.Context;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;
import android.widget.BaseAdapter;
import android.widget.ImageView;
import android.widget.TextView;

import java.util.ArrayList;

public class CustomAdapter extends BaseAdapter {

    Context context;
    ArrayList<RowItem> rowItems;

    CustomAdapter(Context context, ArrayList<RowItem> rowItems) {
        this.context = context;
        this.rowItems = rowItems;
    }

    @Override
    public int getCount() {
        return rowItems.size();
    }
    @Override
    public Object getItem(int position) {
        return rowItems.get(position);
    }

    @Override
    public long getItemId(int position) {
        return rowItems.indexOf(rowItems.get(position));
    }

    /* private view holder class */
    private class ViewHolder {
        ImageView profile_pic;
        TextView member_name;
        TextView status;
    }

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

        ViewHolder holder;

        LayoutInflater mInflater = (LayoutInflater) context
                .getSystemService(Activity.LAYOUT_INFLATER_SERVICE);
        if (convertView == null) {
            convertView = mInflater.inflate(R.layout.list_item, null);
            holder = new ViewHolder();

            holder.member_name = (TextView) convertView
                    .findViewById(R.id.member_name);
            holder.profile_pic = (ImageView) convertView
                    .findViewById(R.id.profile_pic);
            holder.status = (TextView) convertView.findViewById(R.id.status);

            RowItem row_pos = rowItems.get(position);

            holder.profile_pic.setImageBitmap(row_pos.getProfile_pic_id());
            holder.member_name.setText(row_pos.getMember_name());
            holder.status.setText(row_pos.getStatus());

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

        return convertView;
    }

}

Answer 1

仅当convertView为null时才设置数据。当视图被回收时，你什么也没设置，显示当前重复的数据，试试这个：

    if (convertView == null) {
        convertView = mInflater.inflate(R.layout.list_item, null);
        holder = new ViewHolder();

        holder.member_name = (TextView) convertView
                .findViewById(R.id.member_name);
        holder.profile_pic = (ImageView) convertView
                .findViewById(R.id.profile_pic);
        holder.status = (TextView) convertView.findViewById(R.id.status);

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

    holder.profile_pic.setImageBitmap(row_pos.getProfile_pic_id());
    holder.member_name.setText(row_pos.getMember_name());
    holder.status.setText(rowItems.get(position).getStatus());

CustomAdapter扩展BaseAdapter不显示完整数组

1 个答案: