ListView的Item中带按钮以及按钮布局的显示与隐藏

随喜结佛缘

          


     

         



                       

一、上图

                         


二、图片功能解说

       1、点击ListView中其中的一项，Item中处于隐藏状态的操作按钮部分布局显示,其他项显示的布局同时被隐藏，再次点击该项，操作按钮部分布局再次隐藏。

       2、点击各个按钮，分别弹出哪个按钮被点击（也就是点击每一个按钮分别处理不同按钮的业务功能）。

三、实现代码主要处于适配器的处理。见如下代码:

package com.test.listviewbtn.adapters;

import java.util.ArrayList;

import android.content.Context;
import android.view.LayoutInflater;
import android.view.View;
import android.view.View.OnClickListener;
import android.view.ViewGroup;
import android.widget.BaseAdapter;
import android.widget.Button;
import android.widget.ImageView;
import android.widget.LinearLayout;
import android.widget.TextView;
import android.widget.Toast;

import com.test.listviewbtn.R;
import com.test.listviewbtn.beans.LvItemBean;

public class LvAdapter extends BaseAdapter {

private ArrayList<LvItemBean> lvItemBeanList;
// 布局加载器
private LayoutInflater mInflater;
// 上下文
private Context context;
// 布局缓存对象
private ViewHolder holder;
//记录当前展开项的索引
private int expandPosition = -1;

public LvAdapter(ArrayList<LvItemBean> lvItemBeanList, Context context) {
super();
this.lvItemBeanList = lvItemBeanList;
this.context = context;
mInflater = LayoutInflater.from(context);
}

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

@Override
public Object getItem(int position) {
return lvItemBeanList.get(position);
}

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

@Override
public View getView(int position, View convertView, ViewGroup parent) {
if (null == convertView) {
convertView = mInflater.inflate(R.layout.activity_main_listview_item, null);
holder = new ViewHolder();
holder.tv1 = (TextView) convertView.findViewById(R.id.tv_1);
holder.tv2 = (TextView) convertView.findViewById(R.id.tv_2);
holder.tv3 = (TextView) convertView.findViewById(R.id.tv_3);
holder.llItemTop = (LinearLayout) convertView.findViewById(R.id.ll_item_top);
holder.llItemBottom = (LinearLayout) convertView.findViewById(R.id.ll_item_bottom);
holder.bt1 = (Button) convertView.findViewById(R.id.bt_1);
holder.bt2 = (Button) convertView.findViewById(R.id.bt_2);
holder.bt3 = (Button) convertView.findViewById(R.id.bt_3);
convertView.setTag(holder);
} else {
holder = (ViewHolder) convertView.getTag();
}

LvItemBean lvItemBean = lvItemBeanList.get(position);
if (null != lvItemBean) {
holder.llItemTop.setOnClickListener(new OnLvItemClickListener(position));
holder.bt1.setOnClickListener(new OnBtnClickListener());
holder.bt2.setOnClickListener(new OnBtnClickListener());
holder.bt3.setOnClickListener(new OnBtnClickListener());
//如果点击的是当前项，则将其展开，否则将其隐藏
if(expandPosition == position){
holder.llItemBottom.setVisibility(View.VISIBLE);
}else{
holder.llItemBottom.setVisibility(View.GONE);
}
}

return convertView;
}

class OnLvItemClickListener implements OnClickListener {
private int position;

public OnLvItemClickListener(int position) {
super();
this.position = position;
}

@Override
public void onClick(View v) {
//如果当前项为展开，则将其置为-1，目的是为了让其隐藏，如果当前项为隐藏，则将当前位置设置给全局变量，让其展开，这也就是借助于中间变量实现布局的展开与隐藏
if(expandPosition == position){
expandPosition = -1;
}else{
expandPosition = position;
}
notifyDataSetChanged();
}

}

class OnBtnClickListener implements OnClickListener{

@Override
public void onClick(View v) {
switch(v.getId()){
case R.id.bt_1:
Toast.makeText(context, "新增按钮被点击", 1).show();
break;
case R.id.bt_2:
Toast.makeText(context, "修改按钮被点击", 1).show();
break;
case R.id.bt_3:
Toast.makeText(context, "删除按钮被点击", 1).show();
break;
}
}

}

class ViewHolder {
TextView tv1;
TextView tv2;
TextView tv3;
LinearLayout llItemTop;
LinearLayout llItemBottom;
Button bt1;
Button bt2;
Button bt3;
ImageView ivUpDownArrow;
}

}



资源代码：

    http://download.csdn.net/detail/xiogjie_67/8575521