可随意定制的RecyclerView 适配器、设置状态:无数据、无网络等

CustomAdapter
项目地址:https://github.com/genius158/CustomAdapter

可随意定制的RecyclerView 适配器
1.支持多类型
2.支持header和footer(适配网格布局和流布局,可控制隐藏与显示)
3.支持添加状态如:获取数据失败、网络没有连接等(可控制隐藏与显示)
关于加载更多
由于加载更多的实现方法很多,这里并没有引入这个功能,例子中也给了一个来自度娘的简单实现,有需要可以参考一下


可随意定制的RecyclerView 适配器、设置状态:无数据、无网络等_第1张图片
36E50960EDC3983D0E217AAB531C3B5C.jpg

include lib

Gradle: compile 'com.yan.adapter:adapter:+'

how to use

 //adapter初始化,该怎么用还怎么用
    adapter = initAdapter(dataList);
    recyclerView.setLayoutManager(new StaggeredGridLayoutManager(2, StaggeredGridLayoutManager.VERTICAL));
    //recyclerView.setLayoutManager(new LinearLayoutManager(this));
    //recyclerView.setLayoutManager(new GridLayoutManager(this,2));
    recyclerView.setAdapter(adapter);

1.添加普通的数据类型

//添加普通的数据类型 CustomAdapterItem T为holder的类型,V为数据类型
    .addAdapterItem(new CustomAdapterItem() {
            @Override
            public Class dataType() {
                    return Integer.class;//直接返回数据类型,这里并没有根据V的泛型判断数据类型,毕竟反射影响运行效率
            }
            @Override
            public HolderTest1 viewHolder(ViewGroup parent) {
                    return new HolderTest1(
                        LayoutInflater.from(MainActivity.this).inflate(R.layout.item_type_1, parent, false)
                    );
            }
            @Override
            public void bindData(HolderTest1 holder, Integer item, int position) {
                    holder.textView.setText(item + "");
            }
    })

2.添加状态类型

 //添加状态类型 StateAdapterItem(String tag, boolean isShow) tag是标签,便于之后找到这个item;isShow为是否显示
    .addAdapterItem(new StateAdapterItem("NO_WIFI", false) {
            @Override
            public HolderTest2 viewHolder(ViewGroup parent) {
                    HolderTest2 holderTest2 = new HolderTest2(
                            LayoutInflater.from(MainActivity.this).inflate(R.layout.state_view, parent, false)
                    );
                    holderTest2.textView.setText("确保网络连接正常");
                    return holderTest2;
            }
    })
    //在recycleview初次加载的时候,不可见的item并不会执行createviewholder,所以如果你需要对item做动态修改最好以传参的方式传入viewholder
    .addAdapterItem(new StateAdapterItem("DataError", false,
                    getHolder()) {
            @Override
            public HolderTest2 viewHolder(ViewGroup parent) {
                    return null;
            }
    })
    //当然也可以是stateAdapterItem.setHolder(ViewHolder)来设置
    //------------------------------------------------
    private HolderTest2 getHolder() {//这里布局大小需要自己给定
            RecyclerView.LayoutParams layoutParams = new RecyclerView.LayoutParams(RecyclerView.LayoutParams.MATCH_PARENT,
                    RecyclerView.LayoutParams.MATCH_PARENT);
            View view = LayoutInflater.from(MainActivity.this).inflate(R.layout.state_view, null);
            view.setLayoutParams(layoutParams);
            HolderTest2 holderTest2 = new HolderTest2(view);
            holderTest2.textView.setText("获取数据出错");
            return holderTest2;
    }

3.添加header和footer

 //添加header
    .addAdapterItem(new StateAdapterItem(StateAdapterItem.HEADER)
    //添加footer
    .addAdapterItem(new StateAdapterItem(StateAdapterItem.FOOTER)

4.动态更改数据

 StateAdapterItem dataError = adapter.findStateItem("DataError");
    //以参数形式传入的ViewHolder不会出现viewholder为空的情况
    ((HolderTest2) dataError.getHolder()).textView.append("!");
    ((HolderTest2) adapter.getStateFooter().getHolder())
            .textView.setText("footer" + times);
    StateAdapterItem noWifi = adapter.findStateItem("NO_WIFI");
    if (noWifi.getHolder() != null)
            ((HolderTest2) noWifi.getHolder()).textView.append(".");
    StateAdapterItem noData = adapter.findStateItem("NO_DATA");
    if (noData.getHolder() != null)
            ((HolderTest2) noData.getHolder()).textView.append("-");

5.控制显示与隐藏

 adapter.findStateItem("FIXED").hide();
    //或者
    adapter.show("DataError")
            .hide("NO_WIFI")
            .hide("NO_DATA")
            .hideHeader(false)//false不立即执行
            .hideFooter(false)
            .commit();

6.点击事件

 adapter.setOnItemClickListener(...//设置所有位置的点击事件
     //设置数据所在位置的点击事件
    adapter.setOnDataItemClickListener(new OnItemClickListener() {
            @Override
            public void onItemClick(RecyclerView.ViewHolder holder, int position) {
                    ((HolderTest) holder).textView.append(position + "");
                    toast.setText("onItemClick: position " + position);
                    toast.show();
            }
    });

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