写得很辛苦，大家觉得好的话请多多回帖支持我，有时间会发布第二篇

演示环境

 
 

  
  
/*classDBHelpercodestart*/
  
  
packageoms.sqlite_demo;
  
  

  
  
importandroid.content.Context;
  
  
importandroid.database.sqlite.sqliteDatabase;
  
  
importandroid.database.sqlite.sqliteOpenHelper;
  
  
importandroid.database.sqlite.sqliteDatabase.CursorFactory;
  
  
importandroid.util.Log;
  
  

  
  
/**
  
  
*数据库连接类
  
  
*
  
  
*@authoryifangyou2010-01-15
  
  
*
  
  
*/
  
  
publicclassDBHelperextendssqliteOpenHelper{
  
  
privatestaticsqliteDatabasedb=null;
  
  
/**
  
  
*连接数据库，数据库不存在则创建
  
  
*
  
  
*@paramContextcontext,内容上限文
  
  
*@paramStringdbname,数据库名字
  
  
*@paramCursorFactoryfactory,数据库游标
  
  
*@paramintversion,数据库版本
  
  
*@returnsqliteDatabase返回数据库操作类
  
  
*/
  
  
publicDBHelper(Contextcontext,Stringdbname,CursorFactoryfactory,
  
  
intversion){
  
  
super(context,dbname,factory,version);
  
  
}
  
  
/**
  
  
*连接数据库，数据库不存在则创建
  
  
*
  
  
*@returnsqliteDatabase返回数据库操作类
  
  
*/
  
  
publicsqliteDatabasegetconnect(){
  
  
if(db==null){
  
  
db=this.getWritableDatabase();
  
  
}
  
  
returndb;
  
  
}
  
  
/**
  
  
*断开数据库连接
  
  
*
  
  
*@returnvoid
  
  
*/
  
  
publicvoidclose(){
  
  
if(db!=null){
  
  
db.close();
  
  
}
  
  
}
  
  

  
  
@Override
  
  
publicvoidonCreate(sqliteDatabasearg0){
  
  

  
  
}
  
  

  
  
@Override
  
  
publicvoidonUpgrade(sqliteDatabasearg0,intarg1,intarg2){
  
  

  
  
}
  
  
}
  
  
/*classDBHelpercodeend*/
 
 

三、操作数据库

在sqlite_demo.java里的代码如下

 
 

  
  
packageoms.sqlite_demo;
  
  

  
  
importandroid.app.Activity;
  
  
importandroid.database.Cursor;
  
  
importandroid.database.sqlite.sqliteDatabase;
  
  
importandroid.os.Bundle;
  
  
importandroid.util.Log;
  
  

  
  

  
  
publicclasssqlite_demoextendsActivity{
  
  
privatefinalStringDB_NAME="testdb";
  
  
privatefinalStringTABLE_NAME="student";
  
  
/**Calledwhentheactivityisfirstcreated.*/
  
  
@Override
  
  
publicvoidonCreate(BundlesavedInstanceState){
  
  
super.onCreate(savedInstanceState);
  
  
setContentView(R.layout.main);
  
  
DBHelperdbh=newDBHelper(this.getBaseContext(),DB_NAME,null,1);
  
  
sqliteDatabasedb=dbh.getconnect();
  
  
createTable(db);
  
  
queryTable(db);
  
  
dbh.close();
  
  
}
  
  

  
  

  
  
publicvoidcreateTable(sqliteDatabasedb){
  
  
db.execsql("CREATETABLEIFNOTEXISTS"+TABLE_NAME+"("
  
  
+"stud_no"+"TEXT,"
  
  
+"stud_name"+"TEXT"
  
  
+");");
  
  

  
  
Stringsql_1="insertinto"+TABLE_NAME+"(stud_no,stud_name)values('S777','LilyChang');";
  
  
Stringsql_2="insertinto"+TABLE_NAME+"(stud_no,stud_name)values('S888','LindaLin');";
  
  
Stringsql_3="insertinto"+TABLE_NAME+"(stud_no,stud_name)values('S999','BruceWang');";
  
  
db.execsql(sql_1);db.execsql(sql_2);db.execsql(sql_3);
  
  
}
  
  
publicvoidqueryTable(sqliteDatabasedb){
  
  
Stringstr="select*from"+TABLE_NAME;
  
  
Cursorc=db.rawQuery(str,null);
  
  

  
  
Log.v("loginactive","查询记录");
  
  
Log.v("loginactive",String.valueOf(c.getCount()));
  
  
if(c!=null){
  
  
c.moveToFirst();
  
  
while(!c.isLast()){
  
  
Log.v("loginactive","outp.");
  
  
Stringstud_no=c.getString(0);
  
  
Stringstud_name=c.getString(1);
  
  
System.out.println(stud_no+"---------------"+stud_name);
  
  
Log.v("loginactive",stud_no+"---------------"+stud_name);
  
  
c.moveToNext();
  
  
}
  
  
}
  
  

  
  
}
  
  
}
 
 

六、查看结果

点击run后马上点击右上角的DDMS就能在log里看到结果

七、命令行下查看数据库

Cd $OPHONE_HOME/tools

adb pull /data/data/oms.sqlite_dmoe/databases/testdb test.db

sqlite3 test.db