private RecyclerView mRecylerView;
private GriViewAdapter mAdapter;
private GridLayoutManager gridLayoutManager;

mRecylerView.setAdapter(mAdapter);
mRecylerView.setNestedScrollingEnabled(false);
設定一行顯示的數目18
gridLayoutManager = new GridLayoutManager(getContext(), 18, GridLayoutManager.VERTICAL, false);
mRecylerView.setLayoutManager(gridLayoutManager);
根據資料型別顯示佔據的item個數
gridLayoutManager.setSpanSizeLookup(new GridLayoutManager.SpanSizeLookup() {
    @Override
    public int getSpanSize(int position) {
        int type = mAdapter.getItemViewType(position);
        switch (type) {
            case GriViewAdapter.ITEM_VIEW_TYPE_0:
                return 1;
            case GriViewAdapter.ITEM_VIEW_TYPE_1:
                return 2;
        }
        return 1;
    }
});
設定間距
HashMap<String, Integer> stringIntegerHashMap = new HashMap<String, Integer>();
stringIntegerHashMap.put(SpaceItemDecoration.TOP, 0);
stringIntegerHashMap.put(SpaceItemDecoration.BOTTOM, 4);
stringIntegerHashMap.put(SpaceItemDecoration.LEFT, 1);
stringIntegerHashMap.put(SpaceItemDecoration.RIGHT, 1);
mRecylerView.addItemDecoration(new SpaceItemDecoration(stringIntegerHashMap));

adapter：

@Override
public void onBindViewHolder(ViewHolder holder, final int position) {
    int type = getItemViewType(position);
    switch (type) {
        case ITEM_VIEW_TYPE_0:
           
            break;
        case ITEM_VIEW_TYPE_1:
         
            break;
    }
}

@Override
public int getItemViewType(int position) {

    if (position < mKeyList.size() - 1) {
        return ITEM_VIEW_TYPE_0;
    } else {
        return ITEM_VIEW_TYPE_1;
    }
}