为列表视图使用适配器答案

【问题标题】：Using adapter for listview为列表视图使用适配器
【发布时间】：2016-08-16 13:25:29
【问题描述】：

我有一个需要使用 adpater 更新的数组列表。我没有任何文本视图。这是我的代码 -

public class MyAdapter extends BaseAdapter {

    private LayoutInflater inflater = null;
    private ArrayList<MyClass> favouriteMessageList;

    private MyAdapter(Activity activity, ArrayList list) {
        favouriteMessageList = list;
        inflater = (LayoutInflater) activity.getSystemService(Context.LAYOUT_INFLATER_SERVICE);
    }

    @Override
    public View getView(int position, View convertView, ViewGroup parent) {
        ViewHolder viewHolder;
        MyClass favouriteMessage =  favouriteMessageList.get(position);

        if (convertView == null) {
            convertView = inflater.inflate(R.layout.messaging_favorites_layout, null);
            viewHolder = new ViewHolder();

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

        return convertView;
    }

    public void setData(ArrayList<MyClass> data) {
        favouriteMessageList = data;
        notifyDataSetChanged();
    }
}

setData 方法将接收一个数组列表，我需要使用我的 Arraylist 填充视图。我正在使用viewHolder。我如何做到这一点？

【问题讨论】：

我不明白。为什么你没有TextViews？你想得到什么？
在我的情况下如何使用 textview？

标签： java android listview arraylist

【解决方案1】：

试试这样：

public class MyAdapter extends BaseAdapter {

    private LayoutInflater inflater = null;
    private ArrayList<MyClass> favouriteMessageList;

    private MyAdapter(Activity activity, ArrayList list) {
        favouriteMessageList = list;
        inflater = (LayoutInflater) activity.getSystemService(Context.LAYOUT_INFLATER_SERVICE);
    }

    @Override
    public View getView(int position, View convertView, ViewGroup parent) {
        ViewHolder viewHolder;
        MyClass favouriteMessage = favouriteMessageList.get(position);

        if (convertView == null) {
            convertView = inflater.inflate(R.layout.messaging_favorites_layout, null);
            viewHolder = new ViewHolder();

            convertView.setTag(viewHolder);
        } else {
            viewHolder = (ViewHolder) convertView.getTag();
        }
        //Update Your Views Here
        return convertView;
    }

    @Override
    public int getCount() {
        if (favouriteMessageList != null) return favouriteMessageList.size();
        return 0;
    }

    public void setData(ArrayList<MyClass> data) {
        favouriteMessageList = data;
        notifyDataSetChanged();
    }
}

【讨论】：