Android 中listview的全选、全不选、反选、获得选中条目数据

          先说明接下来要实现的ListView+CheckBox支持的功能：    1.  外部点击“编辑”（长按ListView的某一项也可），出现复选框；    2.  支持全选、复选、全不选    3.  支持获取选中的数据的信息  下面是mainactivity的xml布局  <LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"xmlns:tools="http://schemas.android.com/tools"android:layout_width="match_parent"android:layout_height="match_parent"android:orientation="vertical"><LinearLayoutandroid:layout_width="match_parent"android:layout_height="wrap_content"android:orientation="horizontal"><Buttonandroid:id="@+id/edit1"android:onClick="btnEditList"android:layout_width="wrap_content"android:layout_height="wrap_content"android:text="编辑"/><Buttonandroid:id="@+id/edit2"android:onClick="btnSelectAllList"android:layout_width="wrap_content"android:layout_height="wrap_content"android:text="全选"/><Buttonandroid:id="@+id/edit3"android:onClick="btnNoList"android:layout_width="wrap_content"android:layout_height="wrap_content"android:text="全不选"/><Buttonandroid:id="@+id/edit4"android:onClick="btnfanxuanList"android:layout_width="wrap_content"android:layout_height="wrap_content"android:text="反选"/><Buttonandroid:id="@+id/edit5"android:onClick="btnOperateList"android:layout_width="wrap_content"android:layout_height="wrap_content"android:text="获得选中的数据"/></LinearLayout><ListViewandroid:id="@+id/listview"android:layout_width="match_parent"android:layout_height="match_parent"></ListView></LinearLayout>   下面是listview条目布局：   <LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"xmlns:tools="http://schemas.android.com/tools"android:layout_width="match_parent"android:layout_height="match_parent"android:orientation="vertical"><LinearLayoutandroid:layout_width="wrap_content"android:layout_height="wrap_content"android:layout_gravity="center_vertical"android:gravity="center_vertical"android:orientation="horizontal"><CheckBoxandroid:id="@+id/checkbox_operate_data"android:layout_width="wrap_content"android:layout_height="wrap_content"android:layout_gravity="center_vertical"android:layout_margin="6dp"/><ImageViewandroid:id="@+id/material_item_img"android:layout_width="wrap_content"android:layout_height="wrap_content"android:layout_gravity="center_vertical"android:adjustViewBounds="true"android:scaleType="centerCrop"android:src="@drawable/ic_launcher" /></LinearLayout><LinearLayoutandroid:layout_width="fill_parent"android:layout_height="wrap_content"android:layout_gravity="center_vertical"android:orientation="horizontal"android:paddingBottom="10dp"android:paddingTop="10dp"><Viewandroid:id="@+id/user_head_img"android:layout_width="5dp"android:layout_height="fill_parent"android:background="#4483c9" /><LinearLayoutandroid:layout_width="fill_parent"android:layout_height="wrap_content"android:orientation="vertical"><TextViewandroid:id="@+id/text_title"android:layout_width="wrap_content"android:layout_height="wrap_content"android:gravity="center_vertical"android:singleLine="true"android:text="标题"android:textColor="#555555"android:textSize="16sp" /><LinearLayoutandroid:layout_width="fill_parent"android:layout_height="wrap_content"android:layout_marginTop="10dp"android:gravity="center_vertical"android:orientation="horizontal"><TextViewandroid:id="@+id/text_desc"android:layout_width="wrap_content"android:layout_height="wrap_content"android:layout_gravity="center_vertical"android:gravity="bottom"android:singleLine="true"android:text="描述描述描述描述描述描述"android:textColor="#aaaaaa"android:textSize="14sp" /></LinearLayout></LinearLayout></LinearLayout></LinearLayout>   下面是bean类package com.example.listview;public class DataBean {public String id;public String title;public String desc;public boolean isCheck; //该属性主要标志CheckBox是否选中public DataBean(String id, String title, String desc) {this.id = id;this.title = title;this.desc = desc;}}       定义数据显示的Adapter，在该Adapter中，我们需要实现两个重要的功能：控制是否显示CheckBox； 控制CheckBox是否显示，代码中注释了这个 ，直接就是CheckBox显示的情况，想看隐藏的，把代码中的注释去掉即可，然后再xml中让CheckBox不显示。      package com.example.listview;import java.util.List;import android.content.Context;import android.view.LayoutInflater;import android.view.View;import android.view.ViewGroup;import android.widget.BaseAdapter;import android.widget.CheckBox;import android.widget.TextView;public class MyAdapter extends BaseAdapter {private Context mContext;private List<DataBean> mDatas;private LayoutInflater mInflater;// public boolean flage = false;public MyAdapter(Context mContext, List<DataBean> mDatas) {this.mContext = mContext;this.mDatas = mDatas;mInflater = LayoutInflater.from(this.mContext);}@Overridepublic int getCount() {// TODO Auto-generated method stubreturn mDatas.size();}@Overridepublic Object getItem(int arg0) {// TODO Auto-generated method stubreturn mDatas.get(arg0);}@Overridepublic long getItemId(int arg0) {// TODO Auto-generated method stubreturn arg0;}@Overridepublic View getView(int position, View convertView, ViewGroup viewGroup) {ViewHolder holder = null;if (convertView == null) {holder = new ViewHolder();// 条目布局convertView = mInflater.inflate(R.layout.listadata, null);holder.checkboxOperateData = (CheckBox) convertView.findViewById(R.id.checkbox_operate_data);holder.textTitle = (TextView) convertView.findViewById(R.id.text_title);holder.textDesc = (TextView) convertView.findViewById(R.id.text_desc);convertView.setTag(holder);} else {holder = (ViewHolder) convertView.getTag();}final DataBean dataBean = mDatas.get(position);if (dataBean != null) {holder.textTitle.setText(dataBean.title);holder.textDesc.setText(dataBean.desc);// 根据isSelected来设置checkbox的显示状况// if (flage) {// holder.checkboxOperateData.setVisibility(View.VISIBLE);// } else {// holder.checkboxOperateData.setVisibility(View.GONE);// }//holder.checkboxOperateData.setChecked(dataBean.isCheck);//注意这里设置的不是onCheckedChangListener，还是值得思考一下的holder.checkboxOperateData.setOnClickListener(new View.OnClickListener() {@Overridepublic void onClick(View v) {if (dataBean.isCheck) {dataBean.isCheck = false;} else {dataBean.isCheck = true;}}});}return convertView;}class ViewHolder {public CheckBox checkboxOperateData;public TextView textTitle;public TextView textDesc;}

、、、、下面是主代码

<pre name="code" class="html">package com.example.listview;import java.util.ArrayList;import java.util.List;import android.os.Bundle;import android.support.v7.app.ActionBarActivity;import android.util.Log;import android.view.View;import android.widget.Button;import android.widget.ListView;import android.widget.Toast;public class MainActivity extends ActionBarActivity {private Button button;private ListView listView;private List<DataBean> mDatas;private MyAdapter mAdapter;@Overrideprotected void onCreate(Bundle savedInstanceState) {super.onCreate(savedInstanceState);setContentView(R.layout.activity_main);button = (Button) findViewById(R.id.edit1);listView = (ListView) findViewById(R.id.listview);mDatas = new ArrayList<>();for (int i = 0; i < 20; i++) {DataBean dataBean = new DataBean("" + i, "上邪", "山无棱，天地合，乃敢与君绝");mDatas.add(dataBean);}mAdapter = new MyAdapter(this, mDatas);listView.setAdapter(mAdapter);}/*** 编辑、取消编辑* @param view*/public void btnEditList(View view) {//        mAdapter.flage = !mAdapter.flage;////        if (mAdapter.flage) {//            button.setText("取消");//        } else {//            button.setText("编辑");//        }////        mAdapter.notifyDataSetChanged();}/*** 全选* @param view*/public void btnSelectAllList(View view) {//        if (mAdapter.flage) {for (int i = 0; i < mDatas.size(); i++) {mDatas.get(i).isCheck = true;}mAdapter.notifyDataSetChanged();//        }}/*** 全不选* @param view*/public void btnNoList(View view) {//        if (mAdapter.flage) {for (int i = 0; i < mDatas.size(); i++) {mDatas.get(i).isCheck = false;}mAdapter.notifyDataSetChanged();//        }}/*** 反选* @param view*/public void btnfanxuanList(View view) {//        if (mAdapter.flage) {for (int i = 0; i < mDatas.size(); i++) {if (mDatas.get(i).isCheck) {mDatas.get(i).isCheck = false;} else {mDatas.get(i).isCheck = true;}}mAdapter.notifyDataSetChanged();//        }}/*** 获取选中数据* @param view*/public void btnOperateList(View view) {List<String> ids = new ArrayList<>();//        if (mAdapter.flage) {for (int i = 0; i < mDatas.size(); i++) {if (mDatas.get(i).isCheck) {ids.add(mDatas.get(i).id);}}Toast.makeText(MainActivity.this,ids.toString(), Toast.LENGTH_SHORT).show();Log.e("TAG", ids.toString());//        }}}

}