RecyclerView多布局写法，“我的”、“个人中心” 页面经典写法演示

效果：

多布局的使用场景还是蛮多的，比如“首页”、“我的”等页面，早期的时候大家一般都是拼起来的，后来开始自定义ListView（支付宝现在的首页还是ListView），再到后来的RecyclerView。 其实多布局都是一个套路，根据类型去引入layout，本文以RecyclerView为例，以BaseRecyclerViewAdapterHelper为辅演示多布局的写法。

1.添加依赖

compile ‘com.github.yechaoa:YUtils:2.0.6’ compile ‘com.github.CymChad:BaseRecyclerViewAdapterHelper:2.9.34’

YUtils是一个快速开发工具集合，感兴趣的可以戳 YUtils

2.主页面

主页面采用的是 ViewPager + BottomNavigationView

稍微过一下吧。。不想看的直接跳到第3步

布局：

<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:app="http://schemas.android.com/apk/res-auto"
    xmlns:tools="http://schemas.android.com/tools"
    android:id="@+id/container"
    android:layout_width="match_parent"
    android:orientation="vertical"
    android:layout_height="match_parent"
    tools:context="com.yechaoa.multipleitempage.MainActivity">

    <android.support.v4.view.ViewPager
        android:id="@+id/viewPager"
        android:layout_weight="1"
        android:layout_width="match_parent"
        android:layout_height="0dp" />

    <android.support.design.widget.BottomNavigationView
        android:id="@+id/navigation"
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:layout_marginTop="8dp"
        android:background="?android:attr/windowBackground"
        app:menu="@menu/navigation" />

</LinearLayout>

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添加Listener让二者关联起来

mViewPager.addOnPageChangeListener(mOnPageChangeListener); 
mNavigation.setOnNavigationItemSelectedListener(mOnNavigationItemSelectedListener);

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private ViewPager.OnPageChangeListener mOnPageChangeListener = new ViewPager.OnPageChangeListener() {
        @Override
        public void onPageScrolled(int position, float positionOffset, int positionOffsetPixels) {

        }

        @Override
        public void onPageSelected(int position) {
            mNavigation.getMenu().getItem(position).setChecked(true);
        }

        @Override
        public void onPageScrollStateChanged(int state) {

        }
    };


    private BottomNavigationView.OnNavigationItemSelectedListener mOnNavigationItemSelectedListener
            = new BottomNavigationView.OnNavigationItemSelectedListener() {

        @Override
        public boolean onNavigationItemSelected(@NonNull MenuItem item) {
            switch (item.getItemId()) {
                case R.id.navigation_home:
                    mViewPager.setCurrentItem(0);
                    return true;
                case R.id.navigation_category:
                    mViewPager.setCurrentItem(1);
                    return true;
                case R.id.navigation_cart:
                    mViewPager.setCurrentItem(2);
                    return true;
                case R.id.navigation_my:
                    mViewPager.setCurrentItem(3);
                    return true;
            }
            return false;
        }
    };

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ViewPager选中的时候让BottomNavigationView的item也选中，BottomNavigationView的item选中的时候让ViewPager切换page

3.Fragment（“我的”页面）

布局，SwipeRefreshLayout（下拉刷新）嵌套RecyclerView：

<android.support.v4.widget.SwipeRefreshLayout xmlns:android="http://schemas.android.com/apk/res/android"
    android:id="@+id/swipeRefreshLayout"
    android:layout_width="match_parent"
    android:layout_height="match_parent">

    <android.support.v7.widget.RecyclerView
        android:id="@+id/recyclerView"
        android:layout_width="match_parent"
        android:layout_height="match_parent" />

</android.support.v4.widget.SwipeRefreshLayout>

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初始化Data

private void initItemData() {
        itemDataList = new ArrayList<>();

        multipleItem = new MultipleItem(MultipleItem.TYPE_COUNT, 5);
        multipleItem.mString1 = "收藏";
        multipleItem.mString2 = "关注";
        itemDataList.add(multipleItem);

        multipleItem = new MultipleItem(MultipleItem.TYPE_ORDER_HEADER, 5);
        multipleItem.mString2 = "type2";
        itemDataList.add(multipleItem);

        for (int i = 0; i < 5; i++) {
            multipleItem = new MultipleItem(MultipleItem.TYPE_ORDER, 1);
            multipleItem.mString1 = "待付款";
            if (i % 2 == 0) {
                multipleItem.isShow = true;
                multipleItem.count = 6;
            } else {
                multipleItem.isShow = false;
                multipleItem.count = 0;
            }
            itemDataList.add(multipleItem);
        }

        multipleItem = new MultipleItem(MultipleItem.TYPE_BALANCE, 5);
        multipleItem.mString1 = "￥9999.00";
        itemDataList.add(multipleItem);

        multipleItem = new MultipleItem(MultipleItem.TYPE_TOOLS_HEADER, 5);
        multipleItem.mString1 = "type5";
        itemDataList.add(multipleItem);

        for (int i = 0; i < 5; i++) {
            multipleItem = new MultipleItem(MultipleItem.TYPE_TOOLS, 1);
            multipleItem.mString1 = "使用帮助";
            if (i % 2 == 0) {
                multipleItem.isShow = true;
                multipleItem.count = 100;
            } else {
                multipleItem.isShow = false;
                multipleItem.count = 0;
            }
            itemDataList.add(multipleItem);
        }
    }

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获取id

mSwipeRefreshLayout = getActivity().findViewById(R.id.swipeRefreshLayout);
mRecyclerView = getActivity().findViewById(R.id.recyclerView);

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初始化SwipeRefreshLayout

private void initSwipeRefreshLayout() {
        mSwipeRefreshLayout.setColorSchemeResources(
                android.R.color.holo_blue_bright,
                android.R.color.holo_green_light,
                android.R.color.holo_orange_light);

        mSwipeRefreshLayout.setOnRefreshListener(new SwipeRefreshLayout.OnRefreshListener() {
            @Override
            public void onRefresh() {
                new Handler().postDelayed(new Runnable() {
                    @Override
                    public void run() {
                        multipleItemQuickAdapter.notifyDataSetChanged();
                        mSwipeRefreshLayout.setRefreshing(false);
                        YUtils.showToast("刷新完成");
                    }
                }, 2000);
            }
        });
    }

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初始化RecyclerView

private void initRecyclerView() {
        GridLayoutManager gridLayoutManager = new GridLayoutManager(getActivity(), 5);
        mRecyclerView.setLayoutManager(gridLayoutManager);

        multipleItemQuickAdapter = new MultipleItemQuickAdapter(itemDataList);

        View headerView = getHeaderView(new View.OnClickListener() {
            @Override
            public void onClick(View view) {
                switch (view.getId()) {
                    case R.id.my_header_image:
                        YUtils.showToast("你点击了头像");
                        break;
                    case R.id.my_header_settings:
                        YUtils.showToast("你点击了设置");
                        break;
                }
            }
        });

        multipleItemQuickAdapter.addHeaderView(headerView);

        mRecyclerView.setAdapter(multipleItemQuickAdapter);
    }

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添加Header

private View getHeaderView(View.OnClickListener listener) {
        View headerView = getLayoutInflater().inflate(R.layout.layout_my_header, (ViewGroup) mRecyclerView.getParent(), false);

        CircleImageView myHeaderImage = headerView.findViewById(R.id.my_header_image);
        myHeaderImage.setImageResource(R.drawable.header_image);
        myHeaderImage.setOnClickListener(listener);

        TextView myHeaderName = headerView.findViewById(R.id.my_header_name);
        myHeaderName.setText("名字");

        TextView myHeaderMobile = headerView.findViewById(R.id.my_header_mobile);
        myHeaderMobile.setText("手机号");

        ImageView myHeaderSettings = headerView.findViewById(R.id.my_header_settings);
        myHeaderSettings.setOnClickListener(listener);

        return headerView;
    }

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初始化Listener

private void initListener() {
        multipleItemQuickAdapter.setSpanSizeLookup(new BaseQuickAdapter.SpanSizeLookup() {
            @Override
            public int getSpanSize(GridLayoutManager gridLayoutManager, int position) {
                return itemDataList.get(position).getSpanSize();
            }
        });

        multipleItemQuickAdapter.setOnItemClickListener(new BaseQuickAdapter.OnItemClickListener() {
            @Override
            public void onItemClick(BaseQuickAdapter adapter, View view, int position) {

                YUtils.showToast("第  " + position);

                //可以再加一层 类型 的判断，一般来说订单不是点了就消失的
                if (itemDataList.get(position).getItemType() == MultipleItem.TYPE_TOOLS) {
                    if (itemDataList.get(position).isShow) {
                        itemDataList.get(position).isShow = false;
                        LogUtil.i("count  =  " + itemDataList.get(position).count);
                        multipleItemQuickAdapter.notifyItemChanged(position + 1);
                    } else
                        itemDataList.get(position).isShow = false;
                }

            }
        });

        multipleItemQuickAdapter.setOnItemChildClickListener(new BaseQuickAdapter.OnItemChildClickListener() {
            @Override
            public void onItemChildClick(BaseQuickAdapter adapter, View view, int position) {
                switch (view.getId()) {
                    case R.id.my_favorites:
                        YUtils.showToast("收藏");
                        break;
                    case R.id.my_bands:
                        YUtils.showToast("关注");
                        break;
                    case R.id.ll_my_order:
                        YUtils.showToast("全部订单");
                        break;
                    case R.id.my_balance_btn:
                        YUtils.showToast("立即充值");
                        break;
                }
            }
        });

    }

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如果考虑到在GridLayoutManager复用item问题可以配置setSpanSizeLookup setOnItemClickListener，item点击事件 setOnItemChildClickListener，item里面的子view点击事件 item点击的时候，角标（徽章）消失，然后局部刷新

4.Bean

实体类必须实现MultiItemEntity，在设置数据的时候，需要给每一个数据设置itemType

public class MultipleItem implements MultiItemEntity {

    public static final int TYPE_COUNT = 1;
    public static final int TYPE_ORDER_HEADER = 2;
    public static final int TYPE_ORDER = 3;
    public static final int TYPE_BALANCE = 4;
    public static final int TYPE_TOOLS_HEADER = 5;
    public static final int TYPE_TOOLS = 6;
    private int itemType;
    private int spanSize;

    public MultipleItem(int itemType, int spanSize) {
        this.itemType = itemType;
        this.spanSize = spanSize;
    }

    @Override
    public int getItemType() {
        return itemType;
    }

    public int getSpanSize() {
        return spanSize;
    }

    public void setSpanSize(int spanSize) {
        this.spanSize = spanSize;
    }


    public String mString1;

    public String mString2;

    public boolean isShow;

    public int count;

}

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5.Adapter

多布局关键写法就在Adapter里面，根据类型返回不同的layout，然后填充数据、处理事件等等。 在构造里面addItemType绑定type和layout的关系

public class MultipleItemQuickAdapter extends BaseMultiItemQuickAdapter<MultipleItem, BaseViewHolder> {

    public MultipleItemQuickAdapter(List data) {
        super(data);
        addItemType(MultipleItem.TYPE_COUNT, R.layout.layout_my_count);
        addItemType(MultipleItem.TYPE_ORDER_HEADER, R.layout.layout_my_order_header);
        addItemType(MultipleItem.TYPE_ORDER, R.layout.layout_my_order);
        addItemType(MultipleItem.TYPE_BALANCE, R.layout.layout_my_balance);
        addItemType(MultipleItem.TYPE_TOOLS_HEADER, R.layout.layout_my_tools_header);
        addItemType(MultipleItem.TYPE_TOOLS, R.layout.layout_my_tools);
    }

    @Override
    protected void convert(BaseViewHolder helper, MultipleItem item) {
        switch (helper.getItemViewType()) {
            case MultipleItem.TYPE_COUNT:
                helper.setText(R.id.my_favorites, item.mString1).addOnClickListener(R.id.my_favorites);
                helper.setText(R.id.my_bands, item.mString2).addOnClickListener(R.id.my_bands);
                break;
            case MultipleItem.TYPE_ORDER_HEADER:
                helper.addOnClickListener(R.id.ll_my_order);
                break;
            case MultipleItem.TYPE_ORDER:
                helper.setImageDrawable(R.id.my_order_image, ContextCompat.getDrawable(mContext, R.drawable.ic_launcher));
                helper.setText(R.id.my_order_name, item.mString1);
                if (item.isShow) {
                    helper.getView(R.id.my_order_count).setVisibility(View.VISIBLE);
                    if (item.count > 0) {
                        if (item.count < 99) {
                            helper.setText(R.id.my_order_count, String.valueOf(item.count));
                        } else {
                            helper.setText(R.id.my_order_count, String.valueOf("99+"));
                        }
                    } else {
                        helper.getView(R.id.my_order_count).setVisibility(View.GONE);
                    }
                } else {
                    helper.getView(R.id.my_order_count).setVisibility(View.GONE);
                }
                break;
            case MultipleItem.TYPE_BALANCE:
                helper.setText(R.id.my_balance_text, item.mString1);
                helper.addOnClickListener(R.id.my_balance_btn);
                break;
            case MultipleItem.TYPE_TOOLS_HEADER:
                //helper.setText(R.id.tv_item_name, item.mString1);
                break;
            case MultipleItem.TYPE_TOOLS:
                helper.setImageDrawable(R.id.my_tools_image, ContextCompat.getDrawable(mContext, R.drawable.ic_launcher));
                helper.setText(R.id.my_tools_text, item.mString1);
                if (item.isShow) {
                    helper.getView(R.id.my_tools_count).setVisibility(View.VISIBLE);
                    if (item.count > 0) {
                        if (item.count < 99) {
                            helper.setText(R.id.my_tools_count, String.valueOf(item.count));
                        } else {
                            helper.setText(R.id.my_tools_count, String.valueOf("99+"));
                        }
                    } else {
                        helper.getView(R.id.my_tools_count).setVisibility(View.GONE);
                    }
                } else {
                    helper.getView(R.id.my_tools_count).setVisibility(View.GONE);
                }
                break;
        }
    }

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item的layout就不用贴了吧，就一般的布局。。 角标（徽章）的话没用BadgeView，只直接用ImageView写的。 Demo是从项目里抽出来的，好像也没什么要注意的了吧。。忘了。。

Demo：https://github.com/yechaoa/MultipleItemPage