自定义一个基本数组适配器

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
*/
}
}

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);

}

}