列表上的Android图标查看带有分隔符的自定义适配器

Question

当用户单击一行时，我想在列表视图中包含一个播放图标。

我正在使用自定义适配器（带分隔符的Lazy Load）。。。我遇到了分隔符与其他行重叠的问题，所以我实现了getViewTypeCount（）方法来解决这个问题

现在，当我在列表视图的onItemClickListener上包含播放图标时，图标被添加得很好，但它与其他行重叠（除了分隔符）。。。

这是我的代码：

OnItemCLickListener:

    listChannels.setOnItemClickListener(new OnItemClickListener() {
        @Override
        public void onItemClick(AdapterView<?> arg0, View arg1, int arg2,
                long arg3) {
            // TODO Auto-generated method stub

            if (oldView != null) {
                oldView.setDrawingCacheEnabled(true);
                ImageView icon = (ImageView) oldView.findViewById(R.id.imageViewPlay);
                icon.setImageBitmap(null);
                icon.setVisibility(ImageView.GONE);
                icon.invalidate();
            }

                oldView = arg1;
                selectedItem = arg2;
                ImageView icon = (ImageView) arg1.findViewById(R.id.imageViewPlay);
                icon.setImageResource(R.drawable.play_small);
                icon.setVisibility(ImageView.VISIBLE);

                Intent intent = new Intent(StationList2.this,
                        ServiceLauncher.class);
                intent.putExtra("objectPassed", feeds.get(arg2));
                startActivity(intent);
            }
    });

我的自定义适配器：

private class MyCustomAdapter extends BaseAdapter {
    private static final int TYPE_ITEM = 0;
    private static final int TYPE_SEPARATOR = 1;
    private static final int TYPE_MAX_COUNT = TYPE_SEPARATOR + 1;
    private ArrayList<BeanChannelList> mData = new ArrayList<BeanChannelList>();
    private LayoutInflater mInflater;
    private TreeSet<Integer> mSeparatorsSet = new TreeSet<Integer>();
    public MyCustomAdapter() {
        mInflater = (LayoutInflater) getSystemService(Context.LAYOUT_INFLATER_SERVICE);
        imageLoader = new ImageLoader(activity.getApplicationContext());
    }
    public void addItem(final BeanChannelList beanChannelList) {
        mData.add(beanChannelList);
        notifyDataSetChanged();
    }
    public void addSeparatorItem(final BeanChannelList beanChannelList) {
        mData.add(beanChannelList);
        // save separator position
        mSeparatorsSet.add(mData.size() - 1);
        notifyDataSetChanged();
    }
    @Override
    public int getItemViewType(int position) {
        return mSeparatorsSet.contains(position) ? TYPE_SEPARATOR
                : TYPE_ITEM;
    }
    @Override
    public int getViewTypeCount() {
        return TYPE_MAX_COUNT;
    }
    @Override
    public int getCount() {
        return mData.size();
    }
    @Override
    public String getItem(int position) {
        return mData.get(position).getStrTitle();
    }
    @Override
    public long getItemId(int position) {
        return position;
    }
    @Override
    public View getView(int position, View convertView, ViewGroup parent) {
        ViewHolder holder = null;
        int type = getItemViewType(position);
        if (convertView == null) {
            holder = new ViewHolder();
            switch (type) {
            case TYPE_ITEM:
                convertView = mInflater
                        .inflate(R.layout.listitem_row, null);
                holder.textView = (TextView) convertView
                        .findViewById(R.id.textView1);
                holder.textview2 = (TextView) convertView
                        .findViewById(R.id.textView2);
                holder.image = (ImageView) convertView
                        .findViewById(R.id.imageView1);
                holder.imagePlay = (ImageView) convertView
                        .findViewById(R.id.imageViewPlay);


                break;
            case TYPE_SEPARATOR:
                convertView = mInflater.inflate(R.layout.item2, null);
                holder.textView = (TextView) convertView
                        .findViewById(R.id.textView1);
                holder.textview2 = (TextView) convertView
                        .findViewById(R.id.textView2);
                holder.image = (ImageView) convertView
                        .findViewById(R.id.imageView1);
                holder.imagePlay = (ImageView) convertView
                        .findViewById(R.id.imageViewPlay);
                convertView.setClickable(false);
                convertView.setFocusable(false);
                convertView.setFocusableInTouchMode(false);
                convertView.setEnabled(false);
                break;
            }
            convertView.setTag(holder);
        } else {
            holder = (ViewHolder) convertView.getTag();
        }
        try {

            if (mData.get(position).getStrChannelNo().equals("")) {
                holder.textView.setText(mData.get(position)
                        .getStrChannelNo()
                        + "   "
                        + mData.get(position).getStrTitle());
            }
            else {
                holder.textView.setText(mData.get(position)
                        .getStrChannelNo()
                        + ": "
                        + mData.get(position).getStrTitle());
            }

            if (selectedItem == position) {

                holder.imagePlay.setImageResource(R.drawable.play_small);
                holder.imagePlay.setVisibility(ImageView.VISIBLE);

            }
            holder.textview2.setText(mData.get(position).getStrLocation());
            imageLoader.DisplayImage(mData.get(position).getStrImage()
                    .toString(), activity, holder.image);


        } catch (Exception e) {
            e.printStackTrace();
        }
        return convertView;
    }
}

Answer 1

我想问题出在ViewHolder中。有一次我也遇到了同样的问题。请勿使用视图固定器。