RecyclerView 上拉加载更多

1. 到底部自动加载更多

    //加载更多
    mRecyclerView.setOnScrollListener(new OnScrollListener() {
        @Override
        public void onScrolled(RecyclerView recyclerView, int dx, int dy) {
            lastVisibleItemPos=mRecyclerView.getLastVisibleItemPosition();
            super.onScrolled(recyclerView, dx, dy);
        }   
        @Override
        public void onScrollStateChanged(RecyclerView recyclerView, int newState) {
            //每次加载10条数据，lastVisibleItemPos为当前总数-1
             if(newState==RecyclerView.SCROLL_STATE_IDLE&&lastVisibleItemPos==adapter.getItemCount()-1){                    
                new Handler().postDelayed(new Runnable(){

                    @Override
                    public void run() {
                        int size=lists.size();
                        newLists=dbHelper.getLimitList(lists,size); 
                        lists.addAll(newLists);
                        //改变adapter中list，刷新数据
                        adapter.setList(lists);
                        adapter.notifyDataSetChanged();
                    }
                    
                },1000);
            }
            super.onScrollStateChanged(recyclerView, newState);
        }
    });

数据库用的GreenDAO，offset是已取出的list数

![Uploading 从数据库中取10条_958131.png . . .]

Adapter类：

 public void setList(ArrayList lists){
    this.lists=lists;
}