cn.alien95.util

类 SQLHelper

java.lang.Object

android.database.sqlite.SQLiteOpenHelper

cn.alien95.util.SQLHelper

public class SQLHelper
extends android.database.sqlite.SQLiteOpenHelper

Created by linlongxin on 2016/1/5. 数据库辅助类

构造器概要

构造器

构造器和说明
SQLHelper(android.content.Context context, java.lang.String dataBaseName)

方法概要

限定符和类型	方法和说明
void	addTable(java.lang.String tableName, java.lang.String sql) 添加表的创建
int	delete(java.lang.String table, java.lang.String whereClause, java.lang.String[] whereArgs)
boolean	deleteDataBase() 删除数据库
void	execSQL(java.lang.String sql)
android.database.sqlite.SQLiteDatabase	getDataBase()
long	insert(java.lang.String table, java.lang.String nullColumnHack, android.content.ContentValues values)
void	onCreate(android.database.sqlite.SQLiteDatabase db)
void	onUpgrade(android.database.sqlite.SQLiteDatabase db, int oldVersion, int newVersion) 更新数据库通过APP版本
android.database.Cursor	query(boolean distinct, java.lang.String table, java.lang.String[] columns, java.lang.String selection, java.lang.String[] selectionArgs, java.lang.String groupBy, java.lang.String having, java.lang.String orderBy, java.lang.String limit)
android.database.Cursor	query(boolean distinct, java.lang.String table, java.lang.String[] columns, java.lang.String selection, java.lang.String[] selectionArgs, java.lang.String groupBy, java.lang.String having, java.lang.String orderBy, java.lang.String limit, android.os.CancellationSignal cancellationSignal)
android.database.Cursor	query(java.lang.String table, java.lang.String[] columns, java.lang.String selection, java.lang.String[] selectionArgs, java.lang.String groupBy, java.lang.String having, java.lang.String orderBy)
android.database.Cursor	query(java.lang.String table, java.lang.String[] columns, java.lang.String selection, java.lang.String[] selectionArgs, java.lang.String groupBy, java.lang.String having, java.lang.String orderBy, java.lang.String limit)
int	update(java.lang.String table, android.content.ContentValues values, java.lang.String whereClause, java.lang.String[] whereArgs)

从类继承的方法 android.database.sqlite.SQLiteOpenHelper

close, getDatabaseName, getReadableDatabase, getWritableDatabase, onConfigure, onDowngrade, onOpen, setWriteAheadLoggingEnabled

从类继承的方法 java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

构造器详细资料

SQLHelper

public SQLHelper(android.content.Context context,
                 java.lang.String dataBaseName)

方法详细资料

addTable

public void addTable(java.lang.String tableName,
                     java.lang.String sql)

添加表的创建

参数:

tableName -

sql -

onCreate

public void onCreate(android.database.sqlite.SQLiteDatabase db)

指定者:

onCreate 在类中 android.database.sqlite.SQLiteOpenHelper

getDataBase

public android.database.sqlite.SQLiteDatabase getDataBase()

execSQL

public void execSQL(java.lang.String sql)

insert

public long insert(java.lang.String table,
                   java.lang.String nullColumnHack,
                   android.content.ContentValues values)

delete

public int delete(java.lang.String table,
                  java.lang.String whereClause,
                  java.lang.String[] whereArgs)

update

public int update(java.lang.String table,
                  android.content.ContentValues values,
                  java.lang.String whereClause,
                  java.lang.String[] whereArgs)

query

public android.database.Cursor query(boolean distinct,
                                     java.lang.String table,
                                     java.lang.String[] columns,
                                     java.lang.String selection,
                                     java.lang.String[] selectionArgs,
                                     java.lang.String groupBy,
                                     java.lang.String having,
                                     java.lang.String orderBy,
                                     java.lang.String limit)

query

public android.database.Cursor query(boolean distinct,
                                     java.lang.String table,
                                     java.lang.String[] columns,
                                     java.lang.String selection,
                                     java.lang.String[] selectionArgs,
                                     java.lang.String groupBy,
                                     java.lang.String having,
                                     java.lang.String orderBy,
                                     java.lang.String limit,
                                     android.os.CancellationSignal cancellationSignal)

query

public android.database.Cursor query(java.lang.String table,
                                     java.lang.String[] columns,
                                     java.lang.String selection,
                                     java.lang.String[] selectionArgs,
                                     java.lang.String groupBy,
                                     java.lang.String having,
                                     java.lang.String orderBy,
                                     java.lang.String limit)

query

public android.database.Cursor query(java.lang.String table,
                                     java.lang.String[] columns,
                                     java.lang.String selection,
                                     java.lang.String[] selectionArgs,
                                     java.lang.String groupBy,
                                     java.lang.String having,
                                     java.lang.String orderBy)

onUpgrade

public void onUpgrade(android.database.sqlite.SQLiteDatabase db,
                      int oldVersion,
                      int newVersion)

更新数据库通过APP版本

指定者:

onUpgrade 在类中 android.database.sqlite.SQLiteOpenHelper

参数:

db -

oldVersion -

newVersion -

deleteDataBase

public boolean deleteDataBase()

删除数据库