@Override public void findView() { ContentActivity activity = (ContentActivity) getActivity(); grid_recyclerview = (RecyclerView) activity.findViewById(R.id.grid_recyclerview); activity.getSupportActionBar().setTitle(R.string.light_test); activity.getSupportActionBar().setDisplayHomeAsUpEnabled(true); activity.getSupportActionBar().setDisplayShowHomeEnabled(true); // 创建一个线性布局管理器 GridLayoutManager layoutManager = new GridLayoutManager(activity, 4, LinearLayoutManager.VERTICAL, false); // 设置布局管理器 grid_recyclerview.setLayoutManager(layoutManager); }