sqlite manager android

The previous blog mentions SQLite. It is an embedded database because it is lightweight but powerful and is widely used in embedded devices. Later, after the popularity of smartphones and tablets, as a file-based database, it almost became a must-have for the smart Device standalone database, which can be packaged into the APK file with the Android app.SQLite's official site is http://www.sqlite.org/, can b

During the unit test on Android, the function of adding data to the database is tested. The test function is as follows: Public void testadd (){ Studentdao = new studentdao (this. getcontext ()); Student = new student (1, "Lily", 20 ); Studentdao. Add (student ); Log. I (TAG, "testadd "); }The test was successful for the first time, but failed again. The error message is as follows: Android. database.

cursorfactory specifies that the factory class that obtains a cursor instance when executing the query is set to NULL, representing the factory class super (context, name, NULL, version) using the system default; @Override public void OnCreate (Sqlitedatabase db) { db.execsql (' CREATE TABLE IF not ' EXISTS person (personid inte GER primary key AutoIncrement, name varchar, age INTEGER); @Override public void Onupgrade (sqlitedatabase db, int oldvers

Combined with the previous ormlite and Hessian, plus the SAE has supported Java, the server to switch to Java, there is this article. Using Hessian to do data transfer, the ormlite is used to realize the storage of the client and server, which greatly reduces the crud work. This article for exploration stickers, not formally used for large-scale projects, welcome to discuss the use of! First, Introduction 1.1ormlite Ormlite[object Relational Mapping Lite (ORM Lite)] The Object Relational Mapp

(int id );Public void updata (Person p );Public List Public Person findById (int id );} 3. DBOpenHelper. java Copy codeThe Code is as follows: package com. mrzhu. sqltite; Import android. content. Context;Import android. database. sqlite. SQLiteDatabase;Import android. database.

Sqlite is generally used in this way, that is, creating an empty database in the program, and then performing a series of operations such as adding, deleting, modifying, and querying, the development of small applications is easier to meet the requirements, but some large applications contain a large amount of data. If you insert data one by one in the program, first, it is time-consuming. Second, the user experience is poor. The most important thing

= Mconnection.createstatement (); CREATE TABLE State.executeupdate ("CREATE table TB1 (name varchar (), grade int);"); Insert Data state.executeupdate ("INSERT into TB1 values (' Name 1 ', 90);"); State.executeupdate ("INSERT into TB1 values (' Name 2 ', 58);"); State.executeupdate ("INSERT into TB1 values (' Name 3 ', 69);"); State.executeupdate ("INSERT into TB1 values (' Name 4 ', 85);"); Inserting data in the form of a parameter Prep

This article mainly records how to determine the existence of tables in the database in Android Sqlitedatabase and the basic operation of testing the Sqlitedatabase database. For a detailed description of SQLite, you can view the reproduced Android data storage--sqlite use detailedExample :androidmanifest.xml--did not