ANDROID笔记:ListView和CheckBox的简单使用

package com.example.adaptertest;

import java.util.ArrayList;
import java.util.List;

import android.app.Activity;
import android.os.Bundle;
import android.view.Menu;
import android.view.View;
import android.view.View.OnClickListener;
import android.widget.Button;
import android.widget.CheckBox;
import android.widget.CompoundButton;
import android.widget.CompoundButton.OnCheckedChangeListener;
import android.widget.ListView;

public class MainActivity extends Activity {
    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);
        // 找到listview
        ListView listView = (ListView) findViewById(R.id.list);
        // 加载数据
        String[] strings = getResources().getStringArray(R.array.list);
        // arrayadapter适配器

        // ArrayAdapter<String> adapter = new ArrayAdapter<String>(
        // MainActivity.this, R.layout.list_item_1, strings);
        // listView.setAdapter(adapter);
        //

        // simpleadapter适配器
        /*
         * List<Map<String, String>> objList = new ArrayList<Map<String,
         * String>>(); Map<String, String> map = new HashMap<String, String>();
         * map.put("id", "1"); map.put("name", "zhansan"); map.put("sex", "男");
         * 
         * Map<String, String> map1 = new HashMap<String, String>();
         * map1.put("id", "2"); map1.put("name", "hua"); map1.put("sex", "女");
         * 
         * objList.add(map);
         * 
         * objList.add(map1);
         * 
         * SimpleAdapter simpleAdapter = new SimpleAdapter(MainActivity.this,
         * objList, R.layout.list_item_2, new String[] { "id", "name", "sex" },
         * new int[] { R.id.id, R.id.name, R.id.sex });
         * listView.setAdapter(simpleAdapter);
         */
        // 自定义Adapter
        final CheckBox box = (CheckBox) findViewById(R.id.idcheck);
        final List<Student> students = new ArrayList<Student>();
        final MyAdapter adapter2 = new MyAdapter(MainActivity.this, students);
        students.add(new Student("1", "aa", "男", false));
        students.add(new Student("2", "bb", "男", false));
        students.add(new Student("3", "cc", "女", false));
        Button addButton = (Button) findViewById(R.id.btn_add);
        addButton.setOnClickListener(new OnClickListener() {

            @Override
            public void onClick(View v) {
                students.add(new Student((students.size() + 1) + "", "aa", "男",
                        false));
                // 通知适配器更新数据
                adapter2.notifyDataSetChanged();
            }
        });
        listView.setAdapter(adapter2);
        listView.setSelection(students.size() - 1);
        box.setOnCheckedChangeListener(new OnCheckedChangeListener() {
            @Override
            public void onCheckedChanged(CompoundButton buttonView,
                    boolean isChecked) {
                // 全选
                for (Student student : students) {
                    student.setState(isChecked);
                }
                // 通知适配器更新数据
                adapter2.notifyDataSetChanged();

            }
        });

    }

    @Override
    public boolean onCreateOptionsMenu(Menu menu) {
        // Inflate the menu; this adds items to the action bar if it is present.
        getMenuInflater().inflate(R.menu.main, menu);
        return true;
    }

}

package com.example.adaptertest;

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.CompoundButton;
import android.widget.TextView;
import android.widget.CompoundButton.OnCheckedChangeListener;

public class MyAdapter extends BaseAdapter {
    private List<Student> list = null;
    private LayoutInflater inflater = null;
    private View view = null;

    public MyAdapter(Context context, List<Student> list) {
        this.list = list;
        inflater = LayoutInflater.from(context);
    }

    // 返回listView数据的条数
    @Override
    public int getCount() {
        // TODO Auto-generated method stub
        return list.size();
    }

    @Override
    public Object getItem(int position) {
        // TODO Auto-generated method stub
        return list.get(position);
    }

    @Override
    public long getItemId(int position) {
        // TODO Auto-generated method stub
        return position;
    }

    @Override
    public View getView(int position, View convertView, ViewGroup parent) {
        // TODO Auto-generated method stub
        // 获取布局
        view = inflater.inflate(R.layout.list_item_2, null);
        TextView id = (TextView) view.findViewById(R.id.id);
        TextView name = (TextView) view.findViewById(R.id.name);
        TextView sexTextView = (TextView) view.findViewById(R.id.sex);
        final CheckBox box = (CheckBox) view.findViewById(R.id.check);
        final Student student = list.get(position);
        box.setOnCheckedChangeListener(new OnCheckedChangeListener() {
            @Override
            public void onCheckedChanged(CompoundButton buttonView,
                    boolean isChecked) {
                student.setState(isChecked);
            }
        });
        // 控件和数据的匹配
        id.setText(student.getId());
        name.setText(student.getName());
        sexTextView.setText(student.getSexString());
        box.setChecked(student.isState());
        return view;
    }

}

package com.example.adaptertest;

public class Student {
    private String id;
    private String name;
    private String sexString;
    private boolean state;
    
    public Student(String id, String name, String sexString, boolean state) {
        super();
        this.id = id;
        this.name = name;
        this.sexString = sexString;
        this.state = state;
    }

    public String getId() {
        return id;
    }

    public void setId(String id) {
        this.id = id;
    }

    public String getName() {
        return name;
    }

    public void setName(String name) {
        this.name = name;
    }

    public String getSexString() {
        return sexString;
    }

    public void setSexString(String sexString) {
        this.sexString = sexString;
    }

    public boolean isState() {
        return state;
    }

    public void setState(boolean state) {
        this.state = state;
    }

}

activity_main.xml

<RelativeLayout 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:paddingBottom="@dimen/activity_vertical_margin"
    android:paddingLeft="@dimen/activity_horizontal_margin"
    android:paddingRight="@dimen/activity_horizontal_margin"
    android:paddingTop="@dimen/activity_vertical_margin"
    tools:context=".MainActivity" >

    <LinearLayout
        android:id="@+id/linear"
        android:layout_width="fill_parent"
        android:layout_height="wrap_content" >

        <CheckBox
            android:id="@+id/idcheck"
            android:layout_width="wrap_content"
            android:layout_height="wrap_content" />
    </LinearLayout>

    <Button
        android:id="@+id/btn_add"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_alignParentBottom="true"
        android:text="添加" />

    <ListView
        android:id="@+id/list"
        android:layout_width="fill_parent"
        android:layout_height="wrap_content"
        android:layout_above="@id/btn_add"
        android:layout_below="@id/linear" >
    </ListView>

</RelativeLayout>

list_item_2.xml

<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
    android:layout_width="fill_parent"
    android:layout_height="50dp"
    android:orientation="horizontal" >

    <CheckBox
        android:id="@+id/check"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content" />

    <TextView
        android:id="@+id/id"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_weight="1" />

    <TextView
        android:id="@+id/name"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_weight="1" />

    <TextView
        android:id="@+id/sex"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_gravity="right"
        android:layout_weight="1" />

</LinearLayout>