plist文件的存储读取
1 #import "HMViewController.h" 2 3 @interface HMViewController () 4 5 @end 6 7 @implementation HMViewController 8 // 当点点击保存的时候调用 9 - (IBAction)save:(id)sender { 10 // 获取沙盒的根路径 11 // NSString *home = NSHomeDirectory(); 12 13 // 拼接Documents路径 14 // NSString *docPath = [home stringByAppendingString:@"/Documents"]; 15 // NSString *docPath = [home stringByAppendingPathComponent:@"Documents"]; 16 17 18 /** 19 * NSDocumentDirectory : 查找Documents文件夹 20 NSUserDomainMask ： 在用户的应用程序下查找 21 YES 把路径展开 NO 当前应用的根路径 == ~ 22 NO ~/Documents 23 24 */ 25 NSString *docPath = NSSearchPathForDirectoriesInDomains(NSDocumentDirectory, NSUserDomainMask, YES)[0]; 26 NSLog(@"%@",docPath); 27 28 // 拼接文件路径 29 NSString *filePath = [docPath stringByAppendingPathComponent:@"data.plist"]; 30 31 // 只有具备writeToFile:的对象才能使用plist存储，NSArray 32 NSArray *array = @[@1,@2,@"123"]; 33 34 [array writeToFile:filePath atomically:YES]; 35 36 // NSLog(@"%@",docPath); 37 38 39 40 } 41 42 //当点击读取的时候调用 43 - (IBAction)read:(id)sender { 44 NSString *docPath = NSSearchPathForDirectoriesInDomains(NSDocumentDirectory, NSUserDomainMask, YES)[0]; 45 NSLog(@"%@",docPath); 46 47 // 拼接文件路径 48 NSString *filePath = [docPath stringByAppendingPathComponent:@"data.plist"]; 49 50 NSArray *data = [NSArray arrayWithContentsOfFile:filePath]; 51 NSLog(@"%@",data); 52 53 } 54 55 - (void)viewDidLoad 56 { 57 [super viewDidLoad]; 58 // Do any additional setup after loading the view, typically from a nib. 59 } 60 61 - (void)didReceiveMemoryWarning 62 { 63 [super didReceiveMemoryWarning]; 64 // Dispose of any resources that can be recreated. 65 } 66 67 @end
偏好设置的存储与读取
1 #import "HMViewController.h" 2 3 @interface HMViewController () 4 5 @end 6 7 @implementation HMViewController 8 - (IBAction)save:(id)sender { 9 10 // [NSUserDefaults standardUserDefaults]可以直接操作偏好设置文件夹 11 NSUserDefaults *defaults = [NSUserDefaults standardUserDefaults]; 12 13 // 自动帮我们生成一个plist文件存放在偏好设置的文件夹 14 [defaults setObject:@"hm" forKey:@"account"]; 15 16 // 同步：把内存中的数据和沙盒同步 17 [defaults synchronize]; 18 19 } 20 - (IBAction)read:(id)sender { 21 // [NSUserDefaults standardUserDefaults]可以直接操作偏好设置文件夹 22 NSUserDefaults *defaults = [NSUserDefaults standardUserDefaults]; 23 24 NSLog(@"%@",[defaults objectForKey:@"account"]); 25 26 // NSDictionary *dict = @{@"account":@"hm"}; 27 // 28 // dict writeToFile:<#(NSString *)#> atomically:<#(BOOL)#> 29 30 } 31 32 /* 33 偏好设置的好处 34 不用关心文件名 35 快速进行键值对存储的时候用偏好设置 36 37 38 */ 39 40 - (void)viewDidLoad 41 { 42 [super viewDidLoad]; 43 // Do any additional setup after loading the view, typically from a nib. 44 } 45 46 - (void)didReceiveMemoryWarning 47 { 48 [super didReceiveMemoryWarning]; 49 // Dispose of any resources that can be recreated. 50 } 51 52 @end
自定义对象归解档
1 // 2 // HMPerson.h 3 // 08-自定义对象归档 4 // 5 // Created by yz on 14-8-29. 6 // Copyright (c) 2014年 iThinker. All rights reserved. 7 // 8 9 #import <Foundation/Foundation.h> 10 11 @interface HMPerson : NSObject<NSCoding> 12 13 @property (nonatomic, assign) int age; 14 15 @end 16 17 // 18 // HMPerson.m 19 // 08-自定义对象归档 20 // 21 // Created by yz on 14-8-29. 22 // Copyright (c) 2014年 iThinker. All rights reserved. 23 // 24 25 #import "HMPerson.h" 26 27 @implementation HMPerson 28 29 // 在对象归档的时候调用 30 // 哪些属性需要归档 31 // 这些属性怎么归档 32 - (void)encodeWithCoder:(NSCoder *)aCoder 33 { 34 [aCoder encodeInt:_age forKey:@"age"]; 35 } 36 37 // 在对象解档的时候调用 38 // 哪些属性需要解档 39 // 这些属性怎么解档 40 41 - (id)initWithCoder:(NSCoder *)aDecoder 42 { 43 // 当父类实现了NSCoding，就能调用 [super initWithCoder] 44 if (self = [super init]) { 45 _age = [aDecoder decodeIntForKey:@"age"]; 46 } 47 return self; 48 } 49 50 @end 51 52 // 53 // HMViewController.m 54 // 08-自定义对象归档 55 // 56 // Created by yz on 14-8-29. 57 // Copyright (c) 2014年 iThinker. All rights reserved. 58 // 59 60 #import "HMViewController.h" 61 62 #import "HMPerson.h" 63 64 @interface HMViewController () 65 66 @end 67 68 @implementation HMViewController 69 70 - (IBAction)save:(id)sender { 71 HMPerson *person = [HMPerson new]; 72 person.age = 18; 73 74 NSString *docPath = NSSearchPathForDirectoriesInDomains(NSCachesDirectory, NSUserDomainMask, YES)[0]; 75 76 // 拼接文件路径 77 NSString *filePath = [docPath stringByAppendingPathComponent:@"person.data"]; 78 79 [NSKeyedArchiver archiveRootObject:person toFile:filePath]; 80 81 82 } 83 - (IBAction)read:(id)sender { 84 NSString *docPath = NSSearchPathForDirectoriesInDomains(NSCachesDirectory, NSUserDomainMask, YES)[0]; 85 86 // 拼接文件路径 87 NSString *filePath = [docPath stringByAppendingPathComponent:@"person.data"]; 88 89 HMPerson *p = [NSKeyedUnarchiver unarchiveObjectWithFile:filePath]; 90 NSLog(@"%d",p.age); 91 } 92 93 - (void)viewDidLoad 94 { 95 [super viewDidLoad]; 96 // Do any additional setup after loading the view, typically from a nib. 97 } 98 99 - (void)didReceiveMemoryWarning 100 { 101 [super didReceiveMemoryWarning]; 102 // Dispose of any resources that can be recreated. 103 } 104 105 @end