switch (view.getId()){
//线性布局 case R.id.xx: rlview.setLayoutManager(new LinearLayoutManager(this,LinearLayoutManager.VERTICAL,false)); break; //网格布局
case R.id.wg: rlview.setLayoutManager(new GridLayoutManager(this,3)); break; //流式布局
case R.id.ls: rlview.setLayoutManager(new StaggeredGridLayoutManager(4,StaggeredGridLayoutManager.VERTICAL)); break; case R.id.add: list.add("富贵有命生死在天"+list.size()); adapter.notifyDataSetChanged(); break; case R.id.rm: list.remove(list.size()-1); adapter.notifyDataSetChanged(); break;