一个RecycleView的强大adapter

我就是我 2022-05-28 02:39 188阅读 0赞

> 代码地址如下：  
> [http://www.demodashi.com/demo/12218.html][http_www.demodashi.com_demo_12218.html]

#### 前言 ####

一般我们要在mainActivity中利用RecycleView展示一个列表数据的时候，adapter都是类似以下写法：

public class NameAdapter<T> extends RecyclerView.Adapter { 
    
        protected Context mContext;
        protected View mLayoutView;
        protected List<T> mData;
        private ViewHolder mViewHolder;
    
        public NameAdapter(Context context, List<T> data) {
            this.mContext = context;
            this.mData = data;
        }
    
    
        @Override
        public ViewHolder onCreateViewHolder(ViewGroup parent, int viewType) {
            mLayoutView = LayoutInflater.from(mContext).inflate(R.layout.item_layout, parent, false);
            mViewHolder = new ViewHolder(mLayoutView);
            return mViewHolder;
        }
    
        @Override
        public int getItemCount() {
            return mData == null ? 0 : mData.size();
        }
    
        @Override
        public void onBindViewHolder(RecyclerView.ViewHolder holder, int position) {
            mViewHolder = ((ViewHolder) holder);
    
            initData(position);
            setListener(position);
        }
    
        private void initData(int position){
            mViewHolder.mTvName.setText(mData.get(position).toString());
        }
    
        private void setListener(int position){
    
        }
    
    
        class ViewHolder extends RecyclerView.ViewHolder { 
    
            TextView mTvName;
    
            public ViewHolder(View view) {
                super(view);
                mTvName = (TextView) view.findViewById(R.id.tv_name);
            }
        }
    }

然后在mainActivity中调用如下：

mNameList= Arrays.asList("小明","小红","小芳","小花","小海","小林","小叶","小虎","小柔");
    
            mRecyclerView.setHasFixedSize(true);
            mRecyclerView.setLayoutManager(new LinearLayoutManager(this));
            mNameAdapter = new NameAdapter<>(this, mNameList);
            mRecyclerView.setAdapter(mNameAdapter);

那么有什么方法能缩减NameAdapter中的代码，使我们在使用RecycleView进行列表数据展示的时候，把NameAdapter也的更简洁些呢，下面就给大家介绍一款adapter框架，相信在使用它后，将大大缩减NameAdapter的代码

#### 1.配置 ####

在projected的build.gradle中配置maven：

maven { url "https://jitpack.io" }

具体配置如下：

allprojects {
        repositories {
            google()
            jcenter()
    
            maven { url "https://jitpack.io" }
        }
    }

在app module的build.gradle中添加依赖：

compile 'com.github.CymChad:BaseRecyclerViewAdapterHelper:2.9.34'

自此,配置结束.

#### 2.写一个公共的adapter，名为ComAdapter，集成基本的初始化，加载动画等方法 ####

public abstract class ComAdapter<T> extends BaseQuickAdapter<T, BaseViewHolder> { 
    
        protected Context mContext;
        protected List<T>mData;
        protected int mItemViewId;//item布局id
        protected View mHeaderView;
        protected View mFooterView;
    
        public ComAdapter(int itemViewId,List<T>data,Context context) {
            super(itemViewId, data);
            this.mItemViewId=itemViewId;
            this.mContext=context;
            this.mData=data;
        }
    
        @Override
        protected void convert(BaseViewHolder viewHolder, T t) {
            initView(viewHolder,t);
            initData(viewHolder,t);
            setListener(viewHolder,t);
        }
    
        //以下代码见例子
        //......

#### 3.自己写的NameAdapter继承于ComAdapter ####

public class NameAdapter<T>extends ComAdapter { 
    
        private TextView mTvName;
    
        public NameAdapter(List<T> data, Context context){
            super(R.layout.item_layout,data,context);
        }
    
        @Override
        protected void initView(BaseViewHolder viewHolder, Object o) {
            mTvName=viewHolder.getView(R.id.tv_name);
        }
    
        //以下代码省略
        //......

#### 4.在mainActivity中的使用 ####

声明

@BindView(R.id.recycler_view)
        RecyclerView mRecyclerView;
    
        private List<String>mNameList;
        private NameAdapter mNameAdapter;

初始化

mNameList= Arrays.asList("小明","小红","小芳","小花","小海","小林","小叶","小虎","小柔");
            mNameAdapter=new NameAdapter(mNameList,mContext);//初始化NameAdapter
            mNameAdapter.setRecyclerManager(mRecyclerView);//设置RecyclerView特性
            mNameAdapter.addHeaderView(R.layout.item_header);//添加header
            mNameAdapter.addFooterView(R.layout.item_footer);//添加footer
            mNameAdapter.openLeftAnimation();//设置加载动画

item点击事件

//item點擊事件
            mNameAdapter.setOnItemClickListener(new BaseQuickAdapter.OnItemClickListener() {
                @Override
                public void onItemClick(BaseQuickAdapter adapter, View view, int position) {
                    Toast.makeText(MainActivity.this, "onItemLongClick" + position, Toast.LENGTH_SHORT).show();
                }
            });

item中子控件点击事件

//子空控件点击事件
            mNameAdapter.setOnItemChildClickListener(new BaseQuickAdapter.OnItemChildClickListener() {
                @Override
                public void onItemChildClick(BaseQuickAdapter adapter, View view, int position) {
                    Toast.makeText(MainActivity.this, "onItemLongClick" + mNameList.get(position), Toast.LENGTH_SHORT).show();
                }
            });

#### 5.效果图 ####

![hnpeRbrnwJ8WzdW5Owu.gif][]

#### 6.項目結構圖 ####

![8iqoR02G1UtJ4rEYNmw.png][]

一个RecycleView的强大adapter

> 代码地址如下：  
> [http://www.demodashi.com/demo/12218.html][http_www.demodashi.com_demo_12218.html]
> 
> 注：本文著作权归作者，由demo大师发表，拒绝转载，转载需要作者授权

[http_www.demodashi.com_demo_12218.html]: http://www.demodashi.com/demo/12218.html
[hnpeRbrnwJ8WzdW5Owu.gif]: /images/20220528/370427703a9048b8b178891da4afecc4.png
[8iqoR02G1UtJ4rEYNmw.png]: /images/20220528/710029aeb8b44b8dbc372242eb07d154.png