Android中BaseAdapter的viewHolder工具类

工具类实现

static class ViewHolder {    public static <T extends View> T get(View view, int id) {        SparseArray<View> viewHolder = (SparseArray<View>) view.getTag();        if (viewHolder == null) {            viewHolder = new SparseArray<View>();            view.setTag(viewHolder);        }        View childView = viewHolder.get(id);        if (childView == null) {            childView = view.findViewById(id);            viewHolder.put(id, childView);        }        return (T) childView;    }}

BaseAdapter中使用

@Overridepublic View getView(int position, View convertView, ViewGroup parent) {    if (convertView == null) {        convertView = inflater.inflate(R.layout.item_layout, parent, false);    }    TextView name = Tools.ViewHolder.get(convertView, R.id.name);    name.setText("");    return convertView;}

性能和内存已检验，无问题。。。。