Question

添加新列表项然后滚动时会给出错误，但在getviewTypeCount`内返回类似300或更大的数字时，它不会给出如何解决的错误并在创建和设置新消息时滚动其给定错误。这个列表视图有两个不同的布局mymessage和其他消息，我为此功能，一切工作正常，但滚动问题。该怎么解决？

public class ChatAdapter extends BaseAdapter {
private Context context;
private ArrayList<ChatMessage> chatMessages;
RequestOptions options;
private int SELF = 786;
private static final int REGULAR = 0;
private static final int HEADER = 1;

public ChatAdapter (Context context, ArrayList<ChatMessage> chatMessages){
    this.context = context;
    this.chatMessages = chatMessages;
    options = new RequestOptions().circleCrop().placeholder(R.drawable.loader).error(R.drawable.loader);
}
@Override
public int getViewTypeCount() {
    return getCount();
}
@Override
public int getItemViewType(int position) {
    return position;
}

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

@Override
public ChatMessage getItem(final int position) {
    return chatMessages.get(position);
}

@Override
public long getItemId(int position) {
    return 0;
}

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

    if (convertView == null) {
        holder = new ViewHolder();
        LayoutInflater inflater = (LayoutInflater) context
                .getSystemService(Context.LAYOUT_INFLATER_SERVICE);

        Intent intent = ((Activity) context).getIntent();
        String sno = intent.getStringExtra("sno");
        String userid = chatMessages.get(position).getUserId();


        if (userid.equals(sno)) {

            convertView = inflater.inflate(R.layout.mymessage, null, true);

        }else {
            convertView = inflater.inflate(R.layout.message, null, true);
        }

       // convertView = inflater.inflate(R.layout.message, null, true);


        holder.user_name = (TextView) convertView.findViewById(R.id.user_name);
        holder.time = (TextView) convertView.findViewById(R.id.timec);
        holder.message = (TextView) convertView.findViewById(R.id.msg);
        holder.filename = (TextView) convertView.findViewById(R.id.file_name);
        holder.file = (ImageView) convertView.findViewById(R.id.file_img);
        holder.view_container = convertView.findViewById(R.id.all_msg);
        holder.view_container = convertView.findViewById(R.id.my_all);





        convertView.setTag(holder);


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

    holder.user_name.setText(chatMessages.get(position).getMessageUser());
    holder.time.setText("    " +chatMessages.get(position).getMessageTime());
    holder.message.setText(chatMessages.get(position).getMessageText());
    holder.filename.setText(chatMessages.get(position).getFileName());
    Glide.with(context).load(chatMessages.get(position).getMessageFile()).into(holder.file);


    Linkify.addLinks(holder.message,Linkify.ALL);




    return convertView;
}

private class ViewHolder {

    protected TextView user_name, time, message, filename;
    ImageView file;
    EditText sentmsg;
    protected LinearLayout view_container;
}

}

在列表视图中滚动时发生错误java.lang.ArrayIndexOutOfBoundsException

0 个答案: