自定义一个基本数组适配器

自定义一个适配器，

package com.zxf.test.baseadapter;

import android.content.Context;
import android.util.SparseArray;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;
import android.widget.BaseAdapter;
import android.widget.ImageView;
import android.widget.TextView;

import java.util.ArrayList;

/**
 * Created by zxf on 2016/9/22
 * 一些基本适配器的标准使用
 * @param <T>
 */
public abstract class ListBaseAdapter<T> extends BaseAdapter {

    private ArrayList<T> mData;
    private int mLayoutRes;           //布局id


    public ListBaseAdapter() {
    }

    public ListBaseAdapter(ArrayList<T> mData, int mLayoutRes) {
        this.mData = mData;
        this.mLayoutRes = mLayoutRes;
    }

    @Override
    public int getCount() {
        return mData != null ? mData.size() : 0;
    }

    @Override
    public T getItem(int position) {
        return mData.get(position);
    }

    @Override
    public long getItemId(int position) {
        return position;
    }

    @Override
    public View getView(int position, View convertView, ViewGroup parent) {
        ViewHolder holder = ViewHolder.bind(parent.getContext(), convertView, parent, mLayoutRes
                , position);
        bindView(holder, getItem(position));
        return holder.getItemView();
    }

    public abstract void bindView(ViewHolder holder, T obj);


    /**
     * 添加一个元素
     * @param data
     */
    public void add(T data) {
        if (mData == null) {
            mData = new ArrayList<>();
        }
        mData.add(data);
        notifyDataSetChanged();
    }
    /**
     * 给特殊位置添加一个元素
     * @param position
     * @param data
     */
    public void add(int position, T data) {
        if (mData == null) {
            mData = new ArrayList<>();
        }
        mData.add(position, data);
        notifyDataSetChanged();
    }

    /**
     * 移除对象元素
     * @param data
     */
    public void remove(T data) {
        if (mData != null) {
            mData.remove(data);
        }
        notifyDataSetChanged();
    }

    /**
     * 移除某一条的元素
     * @param position
     */
    public void remove(int position) {
        if (mData != null) {
            mData.remove(position);
        }
        notifyDataSetChanged();
    }

    /**
     * 数组清空
     */
    public void clear() {
        if (mData != null) {
            mData.clear();
        }
        notifyDataSetChanged();
    }


    public static class ViewHolder {

        private SparseArray<View> mViews;   //存储ListView 的 item中的View
        private View item;                  //存放convertView
        private int position;               //游标
        private Context context;            //Context上下文


        /**
         * 构造方法，完成相关初始化
         * @param context
         * @param parent
         * @param layoutRes
         */
        private ViewHolder(Context context, ViewGroup parent, int layoutRes) {
            mViews = new SparseArray<>();
            this.context = context;
            View convertView = LayoutInflater.from(context).inflate(layoutRes, parent, false);
            convertView.setTag(this);
            item = convertView;
        }


        /**
         * 绑定ViewHolder与item
         * @param context
         * @param convertView
         * @param parent
         * @param layoutRes
         * @param position
         * @return
         */
        public static ViewHolder bind(Context context, View convertView, ViewGroup parent,
                                      int layoutRes, int position) {
            ViewHolder holder;
            if (convertView == null) {
                holder = new ViewHolder(context, parent, layoutRes);
            } else {
                holder = (ViewHolder) convertView.getTag();
                holder.item = convertView;
            }
            holder.position = position;
            return holder;
        }

        @SuppressWarnings("unchecked")
        public <T extends View> T getView(int id) {
            T t = (T) mViews.get(id);
            if (t == null) {
                t = (T) item.findViewById(id);
                mViews.put(id, t);
            }
            return t;
        }


        /**
         * 获取当前条目
         */
        public View getItemView() {
            return item;
        }

        /**
         * 获取条目位置
         */
        public int getItemPosition() {
            return position;
        }

        /**
         * 设置文字
         */
        public ViewHolder setText(int id, CharSequence text) {
            View view = getView(id);
            if (view instanceof TextView) {
                ((TextView) view).setText(text);
            }
            return this;
        }

        /**
         * 设置图片
         */
        public ViewHolder setImageResource(int id, int drawableRes) {
            View view = getView(id);
            if (view instanceof ImageView) {
                ((ImageView) view).setImageResource(drawableRes);
            } else {
                view.setBackgroundResource(drawableRes);
            }
            return this;
        }


        /**
         * 设置点击监听
         */
        public ViewHolder setOnClickListener(int id, View.OnClickListener listener) {
            getView(id).setOnClickListener(listener);
            return this;
        }

        /**
         * 设置可见
         */
        public ViewHolder setVisibility(int id, int visible) {
            getView(id).setVisibility(visible);
            return this;
        }

        /**
         * 设置标签
         */
        public ViewHolder setTag(int id, Object obj) {
            getView(id).setTag(obj);
            return this;
        }
        /**
         *其他方法需要可以自己添加
         */
    }
}

测试activity

package com.zxf.test.baseadapter;

import android.content.Context;
import android.os.Bundle;
import android.support.v7.app.AppCompatActivity;
import android.view.View;
import android.widget.ListView;
import android.widget.Toast;

import java.util.ArrayList;
import java.util.List;

public class MainActivity extends AppCompatActivity {

    private Context mContext;
    private ListView list_book;
    private ListView list_app;

    private ListBaseAdapter<AppBean> myAdapter1 = null;
    private ListBaseAdapter<BookBean> myAdapter2 = null;
    private List<AppBean> mData1 = null;
    private List<BookBean> mData2 = null;

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);
        mContext = MainActivity.this;
        init();

    }

    private void init() {

        list_book = (ListView) findViewById(R.id.list_book);
        list_app = (ListView) findViewById(R.id.list_app);

        //数据初始化
        mData1 = new ArrayList<AppBean>();
        mData1.add(new AppBean(R.mipmap.iv_icon_baidu,"百度"));
        mData1.add(new AppBean(R.mipmap.iv_icon_douban,"豆瓣"));
        mData1.add(new AppBean(R.mipmap.iv_icon_zhifubao,"支付宝"));

        mData2 = new ArrayList<BookBean>();
        mData2.add(new BookBean("《第一行代码Android》","郭霖"));
        mData2.add(new BookBean("《C语言程序设计》","谭浩强"));
        mData2.add(new BookBean("《Android开发艺术探索》","任玉刚"));

        //Adapter初始化
        myAdapter1 = new ListBaseAdapter<AppBean>((ArrayList)mData1,R.layout.item_one) {
            @Override
            public void bindView(ViewHolder holder, AppBean obj) {
                holder.setImageResource(R.id.img_icon,obj.getAppIcon());
                holder.setText(R.id.txt_aname,obj.getAppName());
                holder.setOnClickListener(R.id.txt_aname, new View.OnClickListener() {
                    @Override
                    public void onClick(View v) {
                        Toast.makeText(MainActivity.this,"点击",Toast.LENGTH_LONG).show();
                    }
                });
            }
        };
        myAdapter2 = new ListBaseAdapter<BookBean>((ArrayList)mData2,R.layout.item_two) {
            @Override
            public void bindView(ViewHolder holder, BookBean obj) {
                holder.setText(R.id.txt_bname,obj.getBookName());
                holder.setText(R.id.txt_bauthor,obj.getBookAuthor());
            }
        };

        //ListView设置下Adapter：
        list_book.setAdapter(myAdapter2);
        list_app.setAdapter(myAdapter1);

    }


}