回调demo源码，完整包含博客中提到了6个步骤

package com.eebbk.callbackdemo; import android.content.Context; import android.view.LayoutInflater; import android.view.View; import android.view.ViewGroup; import android.widget.BaseAdapter; import android.widget.LinearLayout; import android.widget.TextView; import java.util.List; /** * Created by Administrator on 2016/10/24. */ public class CallBackListAdapter extends BaseAdapter { private Context context; private List<String> strings; /*** * 第三步：申明这个类的对象 */ private OnItemLayoutClickListener onItemLayoutClickListener; /*** * 第一步：定义一个回调接口类 */ public interface OnItemLayoutClickListener { /*** * 第二步：定义接口实现的方法 */ void onItemLayoutClick(int position); } /*** * 第四步：写一个这个接口类的构造方法，传递实现了这个接口的实例 */ public void setOnItemLayoutClickListener(OnItemLayoutClickListener onItemLayoutClickListener) { this.onItemLayoutClickListener = onItemLayoutClickListener; } public CallBackListAdapter(Context context, List<String> strings) { this.context = context; this.strings = strings; } @Override public int getCount() { return strings.size(); } @Override public Object getItem(int position) { return position; } @Override public long getItemId(int position) { return 0; } @Override public View getView(final int position, View convertView, ViewGroup parent) { final ViewHolder viewHolder; if (convertView == null) { viewHolder = new ViewHolder(); convertView = LayoutInflater.from(context).inflate(R.layout.callback_list_item, null); viewHolder.tv = (TextView) convertView.findViewById(R.id.a_item_tv_name); viewHolder.ll = (LinearLayout) convertView.findViewById(R.id.ll); convertView.setTag(viewHolder); } else { viewHolder = (ViewHolder) convertView.getTag(); } viewHolder.tv.setText(strings.get(position)); viewHolder.ll.setOnClickListener(new ViewGroup.OnClickListener() { @Override public void onClick(View v) { if (null != onItemLayoutClickListener) { /*** * 第五步：当列表项被点击时触发回调事件，传递所点击的列表项int位置position */ onItemLayoutClickListener.onItemLayoutClick(position); } } }); return convertView; } static class ViewHolder { TextView tv; LinearLayout ll; } }