1.获取沙盒路径： NSString *home = NSHomeDirectory();
2.plist文件存储：
Plist注意：不能存储自定义对象
NSString *docPath = NSSearchPathForDirectoriesInDomains(NSDocumentDirectory, NSUserDomainMask, YES)[0];
简洁版plist存储：
- (IBAction)save:(id)sender {
// 获取docpath
NSString *docpath = NSSearchPathForDirectoriesInDomains(NSDocumentDirectory, NSUserDomainMask, YES)[0];
// 拼接路径
NSString *filepath = [docpath stringByAppendingPathComponent:@"x.plist"];
NSString *str = @"chuanzhi";
[str writeToFile:filepath atomically:YES encoding:NSUTF8StringEncoding error:nil];
}
- (IBAction)read:(id)sender {
// 获取docpath
NSString *docpath = NSSearchPathForDirectoriesInDomains(NSDocumentDirectory, NSUserDomainMask, YES)[0];
// 拼接路径
NSString *filepath = [docpath stringByAppendingPathComponent:@"x.plist"];
// 获取字符串
NSString *str = [NSString stringWithContentsOfFile:filepath encoding:NSUTF8StringEncoding error:nil];
NSLog(@"%@",str);
}
复杂版plist：
//存入
- (IBAction)save:(id)sender {
// 获取路径：NSSearchPath 寻找路径，ForDirectories 要找的文件夹，InDomains 在哪个地方找
// NSDocumentDirectory Documents
NSString *docPath = NSSearchPathForDirectoriesInDomains(NSDocumentDirectory, NSUserDomainMask, YES)[0];
// 拼接路径 NSString *filePath = [docPath stringByAppendingPathComponent:@"xxxx.plist"];
// NSArray *arr = @[@"老马",@"唐帅"];
// 存储
// [arr writeToFile:filePath atomically:YES];
// 创建字典 NSDictionary *dict = @{@"name":@"laoma",@"age":@"18"};
// 存储字典 [dict writeToFile:filePath atomically:YES];}
// 读取- (IBAction)read:(id)sender {//
// 获取沙盒路径// NSString *home = NSHomeDirectory();//
// 拼接doc 路径// NSString *docPath = [home stringByAppendingString:@"/Documents"];//
// 拼接plist路径// NSString *filePath = [docPath stringByAppendingString:@"/xx.plist"];// // 读取数组// NSArray *arr = [NSArray arrayWithContentsOfFile:filePath];
// 获取doc路径 NSString *docPath = NSSearchPathForDirectoriesInDomains(NSDocumentDirectory, NSUserDomainMask, YES)[0];
// 拼接plist路径 NSString *filePath = [docPath stringByAppendingPathComponent:@"xxxx.plist"];
NSDictionary *dict = [NSDictionary dictionaryWithContentsOfFile:filePath]; NSLog(@"%@",dict[@"name"]);}
3.系统偏好设置存储：
// 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
//存入
- (IBAction)save:(id)sender {
// 取得ud
// NSUserDefaults *ud = [NSUserDefaults standardUserDefaults];
// 设置// [ud setObject:@"laoma" forKey:@"name"];
// [ud setInteger:18 forKey:@"age"];
// [ud setBool:YES forKey:@"isOn"];
// [ud synchronize];
//同步 强制写入 !!!一定要写}
//读取
- (IBAction)read:(id)sender {
// 获取ud// NSUserDefaults *ud = [NSUserDefaults standardUserDefaults];
}
4、归档解档存储
// 解析文件都会调用这个方法，注意xib和story文件的加载用的就是这种方法进行的初始化：
- (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;
}
而代码初始化的底层调用：
// 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
{#import
@interface Person : NSObject@property (nonatomic, copy) NSString *name;@property (nonatomic ,assign) NSInteger age;@end
#import "Person.h"@implementation Person// 告诉系统归档哪些属性- (void)encodeWithCoder:(NSCoder *)aCoder {
[aCoder encodeObject:_name forKey:@"name"];
[aCoder encodeInteger:_age forKey:@"age"];}
// 告诉系统解档哪些属性,如何解档
- (instancetype)initWithCoder:(NSCoder *)aDecoder
{ if (self = [super init]) {
_name = [aDecoder decodeObjectForKey:@"name"];
_age = [aDecoder decodeIntegerForKey:@"age"];
}
return self;
}@end
#import@interface ViewController : UIViewController
@end
#import "ViewController.h"
#import "Person.h"
@interface ViewController ()
@end
@implementation ViewController
// 归档
- (IBAction)save:(id)sender {
// 创建对象
Person *p = [[Person alloc] init];
p.name = @"zhangsan";
p.age = 18;
// docpath
NSString *docPath = NSSearchPathForDirectoriesInDomains(NSDocumentDirectory, NSUserDomainMask, YES)[0];
// 拼接路径
NSString *fliePath = [docPath stringByAppendingPathComponent:@"person.data"];
// 归档
[NSKeyedArchiver archiveRootObject:p toFile:fliePath];
}
// 解档
- (IBAction)read:(id)sender {
// docpath
NSString *docPath = NSSearchPathForDirectoriesInDomains(NSDocumentDirectory, NSUserDomainMask, YES)[0];
// 拼接路径
NSString *fliePath = [docPath stringByAppendingPathComponent:@"person.data"];
// 解档
Person *p = [NSKeyedUnarchiver unarchiveObjectWithFile:fliePath];
NSLog(@"%@",p.name);
}
- (void)viewDidLoad {
[super viewDidLoad];
// Do any additional setup after loading the view, typically from a nib.
}
}
5、钥匙串存储：{
#import "ViewController.h"
#import "SSKeychain.h"
@interface ViewController ()
@end
@implementation ViewController
- (void)viewDidLoad {
[super viewDidLoad];
// Do any additional setup after loading the view, typically from a nib.
//要保存的数据
// NSString *username = @"zhangsan";
// NSString *password = @"lisi";
//存储到钥匙串
//pasetPassword 相当于要存的值, account 相当于key
//forService 标识
// [SSKeychain setPassword:username forService:[NSBundle mainBundle].bundleIdentifier account:@"username"];
//从钥匙串取数据
// NSString *username = [SSKeychain passwordForService:[NSBundle mainBundle].bundleIdentifier account:@"username"];
// NSLog(@"%@",username);
NSString * username = @"zhangsan";
NSString * password = @"lisi";
[SSKeychain setPassword:username forService:[NSBundle mainBundle].bundleIdentifier account:@"username"];
NSString * username = [SSKeychain passwordForService:[NSBundle mainBundle].bundleIdentifier account:@"username"];
}
}
6、证书存储：
NSURL *url = [NSURL URLWithString:@"http://www.example.com"];
self.protectionSpace = [[NSURLProtectionSpace alloc] initWithHost:url.host
port:[url.port integerValue]
protocol:url.scheme
realm:nil
authenticationMethod:NSURLAuthenticationMethodHTTPDigest];
// 存
- (IBAction)save:(id)sender {
NSURLCredential *credential;
credential = [NSURLCredential credentialWithUser:@"houyuan" password:@"315213" persistence:NSURLCredentialPersistencePermanent];
[[NSURLCredentialStorage sharedCredentialStorage] setCredential:credential forProtectionSpace:self.protectionSpace];
}
// 取
- (IBAction)read:(id)sender {
NSURLCredential *credential;
NSDictionary *credentials;
credentials = [[NSURLCredentialStorage sharedCredentialStorage] credentialsForProtectionSpace:self.protectionSpace];
NSLog(@"User %@ already connected with password %@", credential.user, credential.password);
}
7、读取硬件信息：
// ViewController.m
#import "ViewController.h"
#import "SystemServices.h"
@interface ViewController ()
@end
@implementation ViewController
- (void)viewDidLoad {
[super viewDidLoad];
//获取硬件信息
SystemServices *services = [SystemServices sharedServices];
//运营商的名字
NSLog(@"%@",services.allSystemInformation);
}
