sqlite 个人写增删改查实例

概述//创建数据库的代码 // DbConn conn = new DbConn(MainActivity.this, "hellodb", null, 1); // conn.createTable("worldtb"); package com.oschina.osmf; import android.content.Context; import android.database.sqlite. //创建数据库的代码
// DbConn conn = new DbConn(MainActivity.this,"hellodb",null,1);

// conn.createtable("worldtb");

package com.oschina.osmf; import androID.content.Context; import androID.database.sqlite.sqliteDatabase; import androID.database.sqlite.sqliteDatabase.CursorFactory; import androID.database.sqlite.sqliteOpenHelper; import androID.util.Log; public class DbConn extends sqliteOpenHelper{ public DbConn(Context context,String name,CursorFactory factory,int version) { super(context,name,factory,version); } @OverrIDe public voID onCreate(sqliteDatabase db) { } @OverrIDe public voID onUpgrade(sqliteDatabase db,int oldVersion,int newVersion) { } public voID createtable(String tablename) { sqliteDatabase db = this.getWritableDatabase(); String sql = "create table if not exists "+tablename+"(ID integer primary key,name varchar)"; db.execsql(sql); Log.i("test","创建表成功"); } public voID selecttable(String tablename) { } }

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