Question

如何override动态添加TextView的getView ArrayAdaptor方法？

这是我到目前为止所做的：

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

        if (convertView == null) {
            holder = new ViewHolder();
            LayoutInflater inflator = context.getLayoutInflater();
            view = inflator.inflate(R.layout.numbergenerationitemlayout,
                    parent, false);
            holder.FL = (FlowLayout) view.findViewById(R.id.itemFlowLayout);
            holder.FL.setTag(list.get(position));
            view.setTag(holder);

            GameSet GS = (GameSet) list.get(position);
            ArrayList<Element> normal = GS.getNormalNum();
            if (normal != null) {
                for (int x = 0; x < normal.size(); x++) {
                    BallTextView BT = new BallTextView(context, "BLUE_BALL");
                    String text = "" + normal.get(x).getElement();
                    BT.setText(text);
                    holder.FL.addView(BT);
                }
            }

            ArrayList<Element> special = GS.getSpecialNum();
            if (special != null) {
                for (int x = 0; x < special.size(); x++) {
                    BallTextView BT = new BallTextView(context, "ORANGE_BALL");
                    String text = "" + special.get(x).getElement();
                    BT.setText(text);
                    holder.FL.addView(BT);
                }
            }
        } else {
            view = convertView;
            // ((ViewHolder) view.getTag()).FL.setTag(list.get(position));
        }
        ViewHolder currentHolder = (ViewHolder) view.getTag();
        currentHolder.position = position;


        return view;
    }

我现在面临的问题是，当我向数组添加新数据并调用notifyDataSetChanged()时;在arrayAdaptor上，新项目未添加。

Answer 1

我会尝试做

  GameSet GS = (GameSet) list.get(position);

以外的

  if (convertView == null) {}

例如就在getView()方法的开头，因为在使用列表一段时间后convertView可能不再是null。

Answer 2

需要更改getView方法，这是解决方案：

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

        if (convertView == null) {
            holder = new ViewHolder();
            LayoutInflater inflator = context.getLayoutInflater();
            view = inflator.inflate(R.layout.numbergenerationitemlayout,
                    parent, false);
            holder.FL = (FlowLayout) view.findViewById(R.id.itemFlowLayout);
            holder.FL.setTag(list.get(position));
            view.setTag(holder);

            GameSet GS = (GameSet) list.get(position);
            ArrayList<Element> normal = GS.getNormalNum();
            if (normal != null) {
                for (int x = 0; x < normal.size(); x++) {
                    BallTextView BT = new BallTextView(context, "BLUE_BALL");
                    holder.FL.addView(BT);
                  //here only add the view that holds the content.
                }
            }

            ArrayList<Element> special = GS.getSpecialNum();
            if (special != null) {
                for (int x = 0; x < special.size(); x++) {
                    BallTextView BT = new BallTextView(context, "ORANGE_BALL");
                   //here only add the view that holds the content.
                    holder.FL.addView(BT);
                }
            }
        } else {
            view = convertView;
            // ((ViewHolder) view.getTag()).FL.setTag(list.get(position));
        }
        ViewHolder currentHolder = (ViewHolder) view.getTag();
        currentHolder.position = position;


       //Now do the set text part over here.

        return view;
    }

基本上只在if（convertView == null）下添加视图内容持有者，然后在条件之外执行setText数据部分。

Answer 3

@Override
public int getCount() {
    if (hasMore) {
        return (int) (Math.ceil((mData.length / 4.0))) + 1;
    } else {
        return (int) (Math.ceil((mData.length / 4.0)));
    }
}

 @Override
public View getView(int position, View convertView, ViewGroup viewGroup) {
    if (position == getCount() - 1 && hasMore) {
        convertView = new LinearLayout(context);
        ProgressBar progressBar = new ProgressBar(context);
        progressBar.setIndeterminateDrawable(context.getResources().getDrawable(R.anim.progress_view_grey_anim));
        ((LinearLayout) convertView).addView(progressBar);

    } else {
    }
    return convertView;
}

这是我通常添加的进度视图。

如何使用动态添加的TextView覆盖ArrayAdaptor中的getView方法？

3 个答案: