android连接SQLite数据库-----增加改查+分页

001 业务类
  002 package com.smart.dh;
  003 import  java .util.Iterator;
  004 import java.util.List;
  005 import  android .test.AndroidTestCase;
  006 import  android .util.Log;
  007 import com.smart.domain.Person;
  008 import com.smart.service.PersonService;
  009 public class PersonServiceTest extends AndroidTestCase {
  010 private static final String TAG="PersonServiceTest";
  011
  012 //保存数据。
  013 public void testSave() throws Exception{
  014   PersonService  personService=new PersonService(this.getContext());
  015 //  personService.save(new Person("老梁",(short)23));
  016   for (int i = 0; i < 10; i++) {
  017    personService.save(new Person("llb"+i,(short)(i+1)));
  018   }
  019
  020
  021 }
  022
  023
  024 //查询
  025 public void testFind() throws Exception{
  026   PersonService  personService=new PersonService(this.getContext());
  027   Person person=personService.find(1);
  028   Log.i(TAG, person.toString());
  029
  030 //  personService.save(new Person("老梁",(short)23));
  031 }
  032 //更新语句
  033 public void testUpdate() throws Exception{
  034   PersonService  personService=new PersonService(this.getContext());
  035   Person person=personService.find(1);
  036   person.setName("smart");
  037   personService.update(person);
  038
  039   Log.i(TAG, person.toString());
  040
  041 }
  042 //获得所有的条数
  043 public void testGetCount() throws Exception{
  044   PersonService  personService=new PersonService(this.getContext());
  045   Log.i(TAG, String.valueOf(personService.getCount()));
  046
  047 }
  048
  049 //分页功能
  050 public void testGetScrollData() throws Exception{
  051   PersonService  personService=new PersonService(this.getContext());
  052   List  persons=personService.getScrollData(0, 20);//从0条到20条的数据
  053   for(Person person:persons){
  054    Log.i(TAG, person.toString());
  055   }
  056
  057
  058 }
  059
  060 public void testDelete() throws Exception{
  061   PersonService  personService=new PersonService(this.getContext());
  062   personService.delete(1,2,3);//删除1.2.3三条记录
  063 }
  064
  065
  066
  067
  068
  069
  070
  071 }
  072
  073 javaBean类
  074 package com.smart.domain;
  075 public class Person {
  076 @Override
  077 public String toString() {
  078
  079   return "personid="+personid+",name="+name+",age="+age;
  080 }
  081 public int personid;
  082 public String name;
  083 public Short age;
  084 public int getPersonid() {
  085   return personid;
  086 }
  087 public void setPersonid(int personid) {
  088   this.personid = personid;
  089 }
  090 public String getName() {
  091   return name;
  092 }
  093 public void setName(String name) {
  094   this.name = name;
  095 }
  096 // 增加一个构造器
  097 public Person(int personid, String name, Short age) {
  098   super();
  099   this.personid = personid;
  100   this.name = name;
  101   this.age = age;
  102 }
  103 //创建构造器
  104 public Person(String name, short age) {
  105   this.name = name;
  106   this.age = age;
  107
  108 }
  109 public Short getAge() {
  110   return age;
  111 }
  112 public void setAge(Short age) {
  113   this.age = age;
  114 }
  115 }
  116
  117
  118 数据库创建类
  119 package com.smart.service;
  120 import android.content.Context;
  121 import android.database.sqlite.SQLiteDatabase;
  122 import android.database.sqlite.SQLiteDatabase.CursorFactory;
  123 import android.database.sqlite.SQLiteOpenHelper;
  124 public class DataBaseOpenHelper extends SQLiteOpenHelper {
  125 // 数据名称,
  126 private static final String DBNAME = "smrtDataBase";
  127 // 数据库版本
  128 private static final int version = 1;
  129 // 构造方法参数,
  130 public DataBaseOpenHelper(Context context) {
  131   super(context, DBNAME, null, version);
  132 }
  133 // 数据库创建表的名子。
  134 @Override
  135 public void onCreate(SQLiteDatabase db) {
  136   db.execSQL("CREATE TABLE person (personid integer primary key autoincrement,name varchar(20),age INTEGER)");
  137 }
  138 // 更新方法
  139 @Override
  140 public void onUpgrade(SQLiteDatabase db, int oldVersion, int newVersion) {
  141   db.execSQL("EROP TABLE IF EXISTS person");
  142   onCreate(db);
  143 }
  144
  145
  146
  147 }

你可能感兴趣的:(android连接SQLite数据库-----增加改查+分页)