赵雅智_AndroidUI_Android中listview可折叠伸缩仿手风琴效果（动态）
浏览数：21 /
时间：2015年06月11日
之前写了一篇静态数据listview显示手风琴效果，今天写的博客是动态实现listview的手风琴效果
静态链接：listview静态手风琴效果
数据都是存储在数据库中的，如果想要获取数据就要查询数据库
并且实现了：点击查看想要看的名片的时候，上一个打开的就能关闭
核心代码如下：
package com.cards.activity;
import java.util.List;
import android.app.Activity;
import android.app.AlertDialog;
import android.app.AlertDialog.Builder;
import android.content.Context;
import android.content.DialogInterface;
import android.content.Intent;
import android.net.Uri;
import android.os.Bundle;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;
import android.view.View.OnClickListener;
import android.widget.AdapterView;
import android.widget.AdapterView.OnItemClickListener;
import android.widget.BaseAdapter;
import android.widget.Button;
import android.widget.ImageView;
import android.widget.LinearLayout;
import android.widget.ListView;
import android.widget.RelativeLayout;
import android.widget.TextView;
import com.cards.R;
import com.cards.commom.Common;
import com.cards.commom.MyApp;
import com.cards.dao.CardDao;
import com.cards.dao.CardDaoImp;
import com.cards.entity.Card;
public class CardsListAct extends Activity implements OnItemClickListener {
private FlexListAdapter adapter;
private List<Card> list;
private boolean[] isCurrentItems;
private ListView lv_cards;
private Button btnRegistered;
private TextView tvTitle;
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.act_cardlist);
lv_cards = (ListView) findViewById(R.id.list_cards);
lv_cards.setSelector(R.color.transparent);
// 初始化数据
init();
}
/**
*
* @explaination 初始化数据
* @author yazhizhao
* @time 2014-7-23上午11:30:12
*/
private void init() {
// 查找数据库数据
CardDao cardDao = new CardDaoImp(this);
list = cardDao.findAll();
// 是否点开的list集合
isCurrentItems = new boolean[list.size()];
// 刚进入的时候全部条目显示闭合状态
for (int i = 0; i < isCurrentItems.length; i++) {
isCurrentItems[i] = false;
}
// 设置adapter
adapter = new FlexListAdapter();
lv_cards.setAdapter(adapter);
lv_cards.setOnItemClickListener(this);
}
@Override
public void onItemClick(AdapterView<?> parent, View view, int position,
long id) {
/*
* 只打开一个
*/
for (int i = 0; i < isCurrentItems.length; i++) {
if (i != position) {
isCurrentItems[i] = false;
}
}
// 打开或者合上
isCurrentItems[position] = !isCurrentItems[position];
// 即时刷新
adapter.notifyDataSetChanged();
}
/**
*
* @explaination 自定义adapter
* @author yazhizhao
* @time 2014-7-23上午11:33:39
*/
class FlexListAdapter extends BaseAdapter {
public int getCount() {
return list.size();
}
public Object getItem(int pos) {
return pos;
}
public long getItemId(int pos) {
return pos;
}
public View getView(int pos, View v, ViewGroup p) {
FlexLinearLayout view = null;
if (null == v) {
view = new FlexLinearLayout(CardsListAct.this, list.get(pos),
pos, false);
} else {
view = (FlexLinearLayout) v;
view.setWorkTitleLayout(list.get(pos), pos, isCurrentItems[pos]);
}
return view;
}
}
/**
*
* @explaination 自定义线性布局
* @author yazhizhao
* @time 2014-7-23上午11:25:07
*/
public class FlexLinearLayout extends LinearLayout {
public static final int BULE = 0xFF3D8CB8;
private LinearLayout layout;
private RelativeLayout rlName;
private RelativeLayout rlCards;
private TextView tvCardsPhoneNumInfo;
private TextView tvCardsAddressInfo;
private TextView tvCardsMailInfo;
private TextView tvCardsOtherInfo;
private TextView tvCardsName;
private TextView tvCardName;
private ImageView imgCardsDel;
private LayoutInflater mInflater;
/**
* 创建一个带有伸缩效果的LinearLayout
*
* @param context
* 上下文对象
* @param card
* 内容详细
* @param position
* 该列所在列表的位置
* @param isCurrentItem
* 是否为伸展
*/
public FlexLinearLayout(final Context context, final Card card,
final int position, boolean isCurrentItem) {
super(context);
mInflater = (LayoutInflater) context
.getSystemService(Context.LAYOUT_INFLATER_SERVICE);
layout = (LinearLayout) mInflater.inflate(R.layout.act_cards_list,
null);
rlName = (RelativeLayout) layout.findViewById(R.id.rl_name);
rlCards = (RelativeLayout) layout.findViewById(R.id.rl_cards);
tvCardsPhoneNumInfo = (TextView) layout
.findViewById(R.id.tv_mc_phoneNum);
tvCardsName = (TextView) layout.findViewById(R.id.tv_cards_name);
tvCardName = (TextView) layout.findViewById(R.id.tv_card_name);
tvCardsAddressInfo = (TextView) layout
.findViewById(R.id.tv_mc_addressInfo);
tvCardsMailInfo = (TextView) layout.findViewById(R.id.tv_mc_mail);
tvCardsOtherInfo = (TextView) layout
.findViewById(R.id.tv_mc_otherInfo);
imgCardsDel = (ImageView) layout.findViewById(R.id.iv_cards_del);
tvCardsPhoneNumInfo.setOnClickListener(new OnClickListener() {
@Override
public void onClick(View v) {
String phone_Num = tvCardsPhoneNumInfo.getText().toString()
.trim();
Intent intent = new Intent(Intent.ACTION_CALL, Uri
.parse("tel:" + phone_Num));
startActivity(intent);
}
});
imgCardsDel.setOnClickListener(new OnClickListener() {
@Override
public void onClick(View v) {
Builder builder = new AlertDialog.Builder(CardsListAct.this);
builder.setMessage("确定要删除此名片？")
.setCancelable(false)
.setPositiveButton("确认",
new DialogInterface.OnClickListener() {
public void onClick(
DialogInterface dialog, int id) {
CardDao cardDao = new CardDaoImp(
context);
cardDao.delete(card.getId());
init();
}
})
.setNegativeButton("取消",
new DialogInterface.OnClickListener() {
public void onClick(
DialogInterface dialog, int id) {
dialog.cancel();
}
});
builder.create().show();
}
});
this.addView(layout);
setWorkTitleLayout(card, position, isCurrentItem);
}
/**
* 设置该列的状态及样式
*
* @param card
* 内容详细
* @param position
* 该列所在列表的位置
* @param isCurrentItem
* 是否为伸展
*/
public void setWorkTitleLayout(final Card card, final int position,
boolean isCurrentItem) {
rlName.setBackgroundResource(R.drawable.title_2);
tvCardsName.setText(card.getTruename());
tvCardsName.setTextColor(BULE);
if (isCurrentItem) {
tvCardName.setText(card.getTruename());
tvCardsOtherInfo.setText(card.getMeno());
tvCardsPhoneNumInfo.setText("电话:" + card.getMobile1());
tvCardsMailInfo.setText("邮箱:" + card.getEmail());
tvCardsAddressInfo.setText("地址:" + card.getAddress());
}
rlCards.setVisibility(isCurrentItem ? VISIBLE : GONE);
}
}
@Override
protected void onStart() {
super.onStart();
init();
// 给线性布局设置adapter
MyApp.getInstance().addActivity(this);
}
@Override
protected void onDestroy() {
Common.DestroyLoading(CardsListAct.this);
finish();
super.onDestroy();
}
}
知识点解析：
设置adapter要放在init中，当删除数据的时候调用init才不会出错，
如果只是放在oncreate中，删除数据再刷新的时候就会报错
// 设置adapter adapter = new FlexListAdapter(); lv_cards.setAdapter(adapter); lv_cards.setOnItemClickListener(this);
这段代码就是控制只打开一个item，当打开其中一个item的时候其他的关闭
for (int i = 0; i < isCurrentItems.length; i++) {
if (i != position) {
isCurrentItems[i] = false;
}
}
判断打开还是关闭的优化代码：
if (isCurrentItems[position]) {
isCurrentItems[position] = false;
} else {
isCurrentItems[position] = true;
} 优化为isCurrentItems[position] = !isCurrentItems[position];
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