listView使用的万能的BaseAdapter

当使用Adapter时只需继承myAdapter实现getView()方法即可;

public abstract class myAdapter extends BaseAdapter{    public Context mContext;    public List mList;//构造函数,将数据集合传递进来    public <T> myAdapter(Context context,List<T> mList){        this.mContext = context;        this.mList = mList;            }    @Override    public int getCount() {        return mList.size();    }    @Override    public Object getItem(int position) {        return position;    }    @Override    public long getItemId(int position) {        return 0;    }    //向外部暴露的接口.以便设置item    public abstract View getView(int position, View convertView, ViewGroup parent);}当adapter中的list发生改变时.需要更新UI时调用 notifyDataSetChanged();