// ViewController.m// 05-PIist存储#import "ViewController.h"#import "Person.h"@interface ViewController ()@end@implementation ViewController// 点击存储的时候调用- (IBAction)save:(id)sender { Person *p = [[Person alloc] init]; // Plist注意：不能存储自定义对象 // Plist：数组和字典, // 如何判断一个对象能不能使用Plist，就看下有没有writeToFile NSArray *arr = @[@"123",@1,p]; // 获取应用的文件夹（应用沙盒）// NSString *homePath = NSHomeDirectory(); // 获取temp// NSTemporaryDirectory(); // 获取Cache文件路径 // NSSearchPathDirectory:搜索的目录 // NSSearchPathDomainMask：搜索范围 NSUserDomainMask:表示在用户的手机上查找 // expandTilde 是否展开全路径，如果没有展开，应用的沙盒路径就是~ // 存储一定要要展开路径 NSString *cachePaht = NSSearchPathForDirectoriesInDomains(NSCachesDirectory, NSUserDomainMask, YES)[0]; // 拼接文件名 NSString *filePath = [cachePaht stringByAppendingPathComponent:@"personArr.plist"]; NSLog(@"%@",cachePaht); // File:文件的全路径 [arr writeToFile:filePath atomically:YES]; }- (IBAction)read:(id)sender { NSString *cachePaht = NSSearchPathForDirectoriesInDomains(NSCachesDirectory, NSUserDomainMask, YES)[0]; // 拼接文件名 NSString *filePath = [cachePaht stringByAppendingPathComponent:@"arr.plist"]; NSArray *arr = [NSArray arrayWithContentsOfFile:filePath]; NSLog(@"%@",arr); }- (void)viewDidLoad { [super viewDidLoad]; // Do any additional setup after loading the view, typically from a nib.}- (void)didReceiveMemoryWarning { [super didReceiveMemoryWarning]; // Dispose of any resources that can be recreated.}@end
//// Person.h// 05-PIist存储#import@interface Person : NSObject@end
//// Person.m// 05-PIist存储#import "Person.h"@implementation Person@end
06-偏好设置
//// ViewController.m// 06-偏好设置#import "ViewController.h"@interface ViewController ()@end@implementation ViewController// 偏好设置存储:// 好处：1.不需要关心文件名// 2.快速做键值对存储// 底层：就是封装了一个字典// account:xmg pwd:123 rmbPwd:YES- (IBAction)save:(id)sender { NSUserDefaults *userDefaults = [NSUserDefaults standardUserDefaults]; [userDefaults setObject:@"xmg" forKey:@"account"]; [userDefaults setObject:@"123" forKey:@"pwd"]; [userDefaults setBool:YES forKey:@"rmbPwd"]; // 在iOS7之前，默认不会马上把跟硬盘同步 // 同步 [userDefaults synchronize]; }- (IBAction)read:(id)sender { NSString *pwd = [[NSUserDefaults standardUserDefaults] objectForKey:@"pwd"]; NSLog(@"%@",pwd); }- (void)viewDidLoad { [super viewDidLoad]; // Do any additional setup after loading the view, typically from a nib.}- (void)didReceiveMemoryWarning { [super didReceiveMemoryWarning]; // Dispose of any resources that can be recreated.}@end
自定义归档
//// ViewController.m// 07-自定义对象归档#import "ViewController.h"#import "Person.h"@interface ViewController ()@end@implementation ViewController- (IBAction)save:(id)sender { Person *p = [[Person alloc] init]; p.age = 18; // 获取cache NSString *cachePath = NSSearchPathForDirectoriesInDomains(NSCachesDirectory, NSUserDomainMask, YES)[0]; // 获取文件的全路径 NSString *filePath = [cachePath stringByAppendingPathComponent:@"person.data"]; // 把自定义对象归档 [NSKeyedArchiver archiveRootObject:p toFile:filePath]; }- (IBAction)read:(id)sender { // 获取cache NSString *cachePath = NSSearchPathForDirectoriesInDomains(NSCachesDirectory, NSUserDomainMask, YES)[0]; // 获取文件的全路径 NSString *filePath = [cachePath stringByAppendingPathComponent:@"person.data"]; // 解档 Person *p = [NSKeyedUnarchiver unarchiveObjectWithFile:filePath]; NSLog(@"%d",p.age); }- (void)viewDidLoad { [super viewDidLoad]; // Do any additional setup after loading the view, typically from a nib.}- (void)didReceiveMemoryWarning { [super didReceiveMemoryWarning]; // Dispose of any resources that can be recreated.}@end //// Person.h// 07-自定义对象归档#import// 如果一个自定义对象想要归档，必须遵守NSCoding协议，实现协议方法。@interface Person : NSObject @property (nonatomic, assign) int age;@property (nonatomic, strong) NSString* name;@end
//// Person.m// 07-自定义对象归档#import "Person.h"@implementation Person// 什么时候调用：自定义对象归档的时候// 作用：用来描述当前对象里面的哪些属性需要归档- (void)encodeWithCoder:(NSCoder *)aCoder{ // name [aCoder encodeObject:_name forKey:@"name"]; // age [aCoder encodeInt:_age forKey:@"age"]; }// 什么时候调用:解档对象的时候调用// 作用：用来描述当前对象里面的哪些属性需要解档// initWithCoder：就是用来解析文件的。- (id)initWithCoder:(NSCoder *)aDecoder{ // super:NSObject#warning 什么时候需要调用initWithCoder if (self = [super init]) { // 注意：一定要给成员变量赋值 // name _name = [aDecoder decodeObjectForKey:@"name"]; // age _age = [aDecoder decodeIntForKey:@"age"]; } return self; }@end
//// RedView.h// 07-自定义对象归档#import@interface RedView : UIView@end
// RedView.m// 07-自定义对象归档#import "RedView.h"@implementation RedView// 解析文件都会调用这个方法- (id)initWithCoder:(NSCoder *)aDecoder{ // 只要父类遵守了NSCoding,就调用initWithCoder // 先初始化父类 if (self = [super initWithCoder:aDecoder]) { NSLog(@"%s",__func__); } return self;}// 通过代码初始化的时候，调用init方法，底层就会调用initWithFrame- (instancetype)initWithFrame:(CGRect)frame{ if (self = [super initWithFrame:frame]) { NSLog(@"%s",__func__); } return self;}@end