1.DbOpenHelper
package dbOpenHelper;
import android.content.Context;
import android.database.sqlite.SQLiteDatabase;
import android.database.sqlite.SQLiteOpenHelper;
/**
* Created by Administrator on 2014/8/25.
*/
public class DbOpenHelper extends SQLiteOpenHelper {
public DbOpenHelper(Context context)
{
//Context 上下文
//name 数据库名
//CursorFactory 游标工厂模式 当为null时 使用默认值
//version 数据库版本 版本号从1开始
super(context, "person.db", null, 1);
}
@Override
public void onCreate(SQLiteDatabase db) {
//create table person(id integer primary key autoincrement,name varchar(20),age int,phone varchar(11))
String sql = "create table person(id integer primary key autoincrement,name varchar(20),int age,phone varchar(11))";
db.execSQL(sql);
}
@Override
public void onUpgrade(SQLiteDatabase db, int oldVersion, int newVersion) {
}
}2.entity
package domain;
/**
* Created by Administrator on 2014/8/25.
*/
public class Person {
private int id;
private String name;
private int age;
private String phone;
public Person(){}
public Person(int id, String name, int age, String phone) {
this.id = id;
this.name = name;
this.age = age;
this.phone = phone;
}
public Person(int id, String name, String phone) {
this.id = id;
this.name = name;
this.phone = phone;
}
public int getId() {
return id;
}
public void setId(int id) {
this.id = id;
}
public String getName() {
return name;
}
public void setName(String name) {
this.name = name;
}
public int getAge() {
return age;
}
public void setAge(int age) {
this.age = age;
}
public String getPhone() {
return phone;
}
public void setPhone(String phone) {
this.phone = phone;
}
@Override
public String toString() {
return "个人信息{" +
"id=" + id +
", name='" + name + '\'' +
", age=" + age +
", phone='" + phone + '\'' +
'}';
}
}3.DAO
package dao;
import android.content.Context;
import android.database.Cursor;
import android.database.sqlite.SQLiteDatabase;
import dbOpenHelper.DbOpenHelper;
import domain.Person;
import java.util.ArrayList;
import java.util.List;
/**
* Created by Administrator on 2014/8/25.
*/
public class PersonDao {
private DbOpenHelper helper;
public PersonDao(Context context)
{
helper = new DbOpenHelper(context);
}
public void add(Person p)
{
SQLiteDatabase db = helper.getWritableDatabase();
String sql = "insert into person(name,phone) values(?,?)";
db.execSQL(sql,new Object[]{p.getName(),p.getPhone()});
db.close();
}
public void update(Person p)
{
SQLiteDatabase db = helper.getWritableDatabase();
String sql = "update person set phone=? where name=?";
db.execSQL(sql,new Object[]{p.getPhone(),p.getName()});
db.close();
}
public void delete(String name)
{
SQLiteDatabase db = helper.getWritableDatabase();
String sql = "delete from person where name=?";
db.execSQL(sql,new Object[]{name});
db.close();
}
public Person findByName(String name)
{
SQLiteDatabase db = helper.getWritableDatabase();
String sql = "select * from person where name=?";
Cursor cursor = db.rawQuery(sql,new String[]{name});
Person p = null;
while(cursor.moveToFirst())
{
int id = cursor.getInt(cursor.getColumnIndex("id"));
String phone = cursor.getString(cursor.getColumnIndex("phone"));
p = new Person(id,name,phone);
}
db.close();
return p;
}
public List<Person> findAll()
{
SQLiteDatabase db = helper.getWritableDatabase();
String sql = "select * from person";
Cursor cursor = db.rawQuery(sql,null);
List<Person> list = new ArrayList<Person>();
while(cursor.moveToNext())
{
int id = cursor.getInt(cursor.getColumnIndex("id"));
String name = cursor.getString(cursor.getColumnIndex("name"));
String phone = cursor.getString(cursor.getColumnIndex("phone"));
Person p = new Person(id,name,phone);
list.add(p);
}
db.close();
return list;
}
}4.item.xml
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:orientation="horizontal"
android:layout_width="fill_parent"
android:layout_height="fill_parent">
<TextView
android:layout_width="120dp"
android:layout_height="wrap_content"
android:text="@string/id"
android:id="@+id/tv_id"
/>
<TextView
android:layout_width="120dp"
android:layout_height="wrap_content"
android:text="@string/name"
android:id="@+id/tv_name"
/>
<TextView
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:text="@string/phone"
android:id="@+id/tv_phone"
/>
</LinearLayout>5.main.xml
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:orientation="vertical"
android:layout_width="fill_parent"
android:layout_height="fill_parent">
<LinearLayout
android:orientation="horizontal"
android:layout_width="fill_parent"
android:layout_height="wrap_content">
<TextView
android:layout_width="120dp"
android:layout_height="wrap_content"
android:text="@string/id"
/>
<TextView
android:layout_width="120dp"
android:layout_height="wrap_content"
android:text="@string/name"
/>
<TextView
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:text="@string/phone"
/>
</LinearLayout>
<ListView
android:layout_width="fill_parent"
android:layout_height="fill_parent"
android:id="@+id/list"
/>
</LinearLayout>6.mainActivity.java
package com.example.dbTest;
import android.app.Activity;
import android.database.Cursor;
import android.os.Bundle;
import android.view.View;
import android.widget.*;
import dao.PersonDao;
import domain.Person;
import service.PersonAdapter;
import java.util.ArrayList;
import java.util.HashMap;
import java.util.List;
import java.util.Map;
/**
* Created by Administrator on 2014/8/25.
*/
public class PersonListActivity extends Activity {
private PersonDao dao;
private ListView lv;
private List<Person> persons;
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.listview);
lv = (ListView)this.findViewById(R.id.list);
dao = new PersonDao(this);
persons = dao.findAll();
//show();
//对单个对象绑定点击事件
lv.setOnItemClickListener(new MyItemClickListener());
show2();
}
public class MyItemClickListener implements AdapterView.OnItemClickListener
{
@Override
public void onItemClick(AdapterView<?> parent, View view, int position, long id) {
ListView lView = (ListView)parent;
Person p = (Person)lView.getItemAtPosition(position);
Toast.makeText(getApplicationContext(),p.getName(),0).show();
}
}
private void show2() {
PersonAdapter adapter = new PersonAdapter(this,persons,R.layout.item);
lv.setAdapter(adapter);
}
private void show() {
List<Person> persons = dao.findAll();
List<HashMap<String,Object>>data = new ArrayList<HashMap<String,Object>>();
for (Person p:persons)
{
HashMap<String,Object> item = new HashMap<String,Object>();
item.put("id",p.getId());
item.put("name",p.getName());
item.put("phone",p.getPhone());
data.add(item);
}
SimpleAdapter sa = new SimpleAdapter(this,data,R.layout.item,new String[]{"id","name","phone"},new int[]{R.id.tv_id,R.id.tv_name,R.id.tv_phone});
lv.setAdapter(sa);
}
}6.继承BaseAdapter适配器
package service;
import android.content.Context;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;
import android.widget.BaseAdapter;
import android.widget.TextView;
import com.example.dbTest.R;
import domain.Person;
import java.util.List;
/**
* Created by Administrator on 2014/8/26.
*/
public class PersonAdapter extends BaseAdapter {
private List<Person> persons;
private int resource;
private LayoutInflater inflater;
public PersonAdapter(Context context,List<Person> persons, int resource) {
this.persons = persons;
this.resource = resource;
inflater = (LayoutInflater)context.getSystemService(Context.LAYOUT_INFLATER_SERVICE);
}
@Override
public int getCount() {
return persons.size();
}
@Override
public Object getItem(int position) {
return persons.get(position);
}
@Override
public long getItemId(int position) {
return position;
}
@Override
public View getView(int position, View convertView, ViewGroup parent) {
if(convertView==null)
{
convertView = inflater.inflate(resource,null);
}
TextView idView = (TextView)convertView.findViewById(R.id.tv_id);
TextView nameView = (TextView)convertView.findViewById(R.id.tv_name);
TextView phoneView = (TextView)convertView.findViewById(R.id.tv_phone);
Person p = persons.get(position);
idView.setText(p.getId()+"");
nameView.setText(p.getName());
phoneView.setText(p.getPhone());
return convertView;
}
}
