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ios开发数据存储
ios开发数据存储
iOS开发
-
数据存储
NSCoder
软件中永远绕不
开
的一个问题就是
数据存储
的问题,PC的时候一般都是选择在数据库中存储，
iOS
如果是和后端配合的话,那么不需要考虑
数据存储
的这个问题，上次写了一下plist的存储，不过数据都是存储一些简单的键值对对象。本次需要将一些自己...
iOS开发
之
数据存储
之NSData
NSData可以为一些
数据
提供临时
存储
空间，以便随后写入文件，或者存放从磁盘读取的文件内容。可以使用[NSMutableData data]创建可变
数据
空间。2、归档2个Person对象到同一文件中 归档（编码）：/新建一块可变
数据
区 NSMutableData*data=...
iOS开发
之
数据存储
之NSKeyedArchiver
1、概述 NSKeyedArchiver归档和plist文件
存储
不同的是NSKeyedArchiver可以直接保存对象。如果对象是NSString、NSDictionary、NSArray、NSData、NSNumber等类型，可以直接用NSKeyedArchiver进行归档和恢复。不是所有的对象都可以直接用这种...
iOS开发
之
数据存储
之Preference(偏好设置)
3.立刻同步，使内存中
数据
与偏好设置中
数据
同步，建议调用一下[defaults synchronize];2、读取上次保存的设置 NSUserDefaults*defaults=[NSUserDefaults standardUserDefaults];NSString*username=[defaults stringForKey:@"username"];...
iOS开发
之
数据存储
之XML属性列表（plist）归档
IOS
常用文件
存储
方式有：XML属性列表（plist）归档 Preference(偏好设置)NSKeyedArchiver归档(NSCoding)SQLite3 Core Data 2、归档NSDictionary 将一个NSDictionary对象归档到一个plist属性列表中：首先，将
数据
封装成字典：...
iOS开发
之
数据存储
之SQLite3（包括FMDB）
SQLite将
数据
划分为以下几种
存储
类型：integer:整型值 real:浮点值 text:文本字符串 blob:二进制
数据
（比如文件）为了保持良好的编程规范、方便程序员之间的交流，编写建表语句的时候最好加上每个字段的具体类型 在
iOS
中使用SQLite3，首先...
iOS开发
UI篇—ios应用
数据存储
方式(偏好设置)
iOS开发
UI篇—ios应用
数据存储
方式(偏好设置)一、简单介绍 很多iOS应用都支持偏好设置，比如保存用户名、密码、字体大小等设置，iOS提供了一套标准的解决方案来为应用加入偏好设置功能 每个应用都有个NSUserDefaults实例，通过它来存取偏好...
iOS开发
UI篇—ios应用
数据存储
方式(偏好设置)
（2）使用偏好设置对数据进行保存之后,它保存到系统的时间是不确定的，会在将来某一时间点自动将数据保存到Preferences文件夹下面，如果需要即刻将
数据存储
，可以使用[defaults synchronize];(3)注意点：所有的信息都写在一个文件中，对比...
iOS开发
UI篇—ios应用
数据存储
方式（XML属性列表-plist）
iOS开发
UI篇—ios应用
数据存储
方式（XML属性列表-plist）一、ios应用常用的
数据存储
方式 1.plist（XML属性列表归档）2.偏好设置 3.NSKeydeArchiver归档（存储自定义对象）4.SQLite3(数据库，关系型数据库，不能直接存储对象，要编写一些...
iOS开发
UI篇—ios应用
数据存储
方式(归档)
iOS开发
UI篇—ios应用
数据存储
方式(归档)一、简单说明 在使用plist进行
数据存储
和读取，只适用于系统自带的一些常用类型才能用，且必须先获取路径相对麻烦；偏好设置（将所有的东西都保存在同一个文件夹下面，且主要用于存储应用的设置信息...
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移动研发平台 EMAS
移动研发平台（Enterprise Mobile Application Studio，简称EMAS），为企业、开发者提供一站式的应用研发管理服务，涵盖开发、测试、运维、运营等应用全生命周期。
产品详情
免费开通
特惠套餐
产品文档
产品简介
快速入门
统一接入
Android统一接入
iOS统一接入
相关产品
移动推送
HTTPDNS
技术支持
钉钉官方答疑群
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移动研发平台 EMAS
移动研发平台（Enterprise Mobile Application Studio，简称EMAS），为企业、开发者提供一站式的应用研发管理服务，涵盖开发、测试、运维、运营等应用全生命周期。
产品详情
免费开通
特惠套餐
产品文档
产品简介
快速入门
统一接入
Android统一接入
iOS统一接入
相关产品
移动推送
HTTPDNS
技术支持
钉钉官方答疑群
