每次用到 ListView 时候都需要写一个Adapter；令人恶心的是需要在getView() 方法中添加一堆代码，无论是维护还是从头开始写都非常不便。现在只需要三部就可以实现一个Adapter。

**注意：**项目中用到 butterknife

1. 实现 Adapter

    class SingleTypeAdapter extends EasyBaseAdapter {
        List<Result> list = new ArrayList<>();
   
        @Override
        protected List getList() {
            if (list.size() > 0) {
                return list;
            }
            // 构造数据
            for (int i = 0; i < 60; i++) {
                SingleTypeActivity.Result result = new SingleTypeActivity.Result();
                list.add(result);
            }
            return list;
        }
   
        // 构造 Item ViewHolder
        @Override
        protected EasyBaseAdapter.ViewHolder onCreateViewHolder(ViewGroup parent, int position) {
            // 创建 ItemView
            View view = LayoutInflater.from(parent.getContext()).inflate(R.layout.list_item_1, null);
            return new SingleTypeViewHolder(view);
        }
    }
   

2. 实现ViewHolder

    class SingleTypeViewHolder extends EasyBaseAdapter.ViewHolder<Result>  {
   
        @Bind(R.id.textView)
        TextView textView;
   
        public SingleTypeViewHolder(View view) {
            super(view);
        }
   
        @Override
        protected void updateView(View convertView, Result data, int position) {
            // 更新View 
            textView.setText(data.txt + position + "  " + (null == convertView));
        }
    }
   

3. 完成

   listView.setAdapter(new SingleTypeAdapter());

1. 实现Adapter

    class MutiTypeAdapter<Result> extends EasyBaseAdapter {
   
        // 一定要实现该方法
        @Override
        public int getViewTypeCount() {
            return 2;
        }
   
        // 一定要实现该方法
        @Override
        public int getItemViewType(int position) {
            if (0 == position % 2) {
                return 0;
            } else {
                return 1;
            }
        }
   
        List<MutiTypeActivity.Result> list = new ArrayList<>();
   
        @Override
        protected List<MutiTypeActivity.Result> getList() {
   
            if (list.size() > 0) {
                return list;
            }
            // 构造数据
            for (int i = 0; i < 60; i++) {
                MutiTypeActivity.Result result = new MutiTypeActivity.Result();
                list.add(result);
            }
            return list;
        }
   
        // 构造 Item ViewHolder
        @Override
        protected EasyBaseAdapter.ViewHolder onCreateViewHolder(ViewGroup parent, int position) {
            // 根据 ViewType 创建 ItemView
            if (0 == getItemViewType(position)) {
                View view = LayoutInflater.from(parent.getContext()).inflate(R.layout.list_item_1, null);
                return new MutiTypeViewHolder1(view);
            } else {
                View view = LayoutInflater.from(parent.getContext()).inflate(R.layout.list_item_2, null);
                return new MutiTypeViewHolder2(view);
            }
        }
    }
   

2. 实现ViewHolder

    class MutiTypeViewHolder1 extends EasyBaseAdapter.ViewHolder<Result> {
   
        @Bind(R.id.textView)
        TextView textView;
   
        public MutiTypeViewHolder1(View view) {
            super(view);
        }
   
        @Override
        protected void updateView(View convertView, Result data, int position) {
            // 更新View 
            textView.setText("刺激 + " + position + "   " + (null == convertView));
        }
    }
   
    class MutiTypeViewHolder2 extends EasyBaseAdapter.ViewHolder<Result> {
   
        @Bind(R.id.imageView)
        ImageView imageView;
   
        public MutiTypeViewHolder2(View view) {
            super(view);
        }
   
        @Override
        protected void updateView(View convertView, Result data, int position) {
            // 更新View 
            imageView.setImageResource(R.mipmap.rr);
          }
    }
   

3. 完成

   listView.setAdapter(new SingleTypeAdapter());

**注意：**多样式ListView 的 Adapter 中一定要实现 getViewTypeCount() 和 getItemViewType()这两个方法。其余照搬就好。