//文件路径
//1.Home主目录:里面有Document, library,tem,和一个应用程序
NSLog(@"%@",NSHomeDirectory());
//2.Document路径
NSString *docuPath=NSSearchPathForDirectoriesInDomains(NSDocumentDirectory, NSUserDomainMask, YES)[0];
NSLog(@"%@",docuPath);
//3.Library路径
NSString *libPath=NSSearchPathForDirectoriesInDomains(NSLibraryDirectory,NSUserDomainMask, YES)[0];
NSLog(@"%@",libPath);
//4.Temp路径
NSLog(@"%@",NSTemporaryDirectory());
//5.caches路径
NSString *caches=NSSearchPathForDirectoriesInDomains(NSCachesDirectory, NSUserDomainMask, YES)[0];
NSLog(@"%@",caches);
//6.user路径
NSString *user=NSUserName();
NSLog(@"%@",user);
//7.NSBundle路径路径
NSString *bundle=[[NSBundle mainBundle]pathForResource:@"6" ofType:@"png"];
NSLog(@"%@",bundle);
//简单文件写入
//NSString写入
//1.写入的路径
NSString *s=NSSearchPathForDirectoriesInDomains(NSDocumentDirectory, NSUserDomainMask, YES)[0];
NSLog(@"%@",s);
//2.拼接文件路径
NSString *filePath=[s stringByAppendingString:@"/myText.txt"];
//3.准备写入的内容
NSString *content=@"hello,world";
//4.写入
[content writeToFile:filePath atomically:YES encoding:NSUTF8StringEncoding error:nil];
//5.文件读取
NSString *readString=[NSString stringWithContentsOfFile:filePath encoding:NSUTF8StringEncoding error:nil];
NSLog(@"%@",readString);
//NSArray
//1.获取document路径
NSString *s1=NSSearchPathForDirectoriesInDomains(NSDocumentDirectory, NSUserDomainMask, YES)[0];
//2.拼接文件路径
NSString *arrFile=[s1 stringByAppendingString:@"/array.plist"];
//3.准备内容
NSArray *array=@[@"123",@"456",@"678"];
//4.写入
[array writeToFile:arrFile atomically:YES];
//5.读取文件
NSArray *arr=[NSArray arrayWithContentsOfFile:arrFile];
NSLog(@"%@",arr);
//NSDictionary
//1.获取写入路径
NSString *s2=NSSearchPathForDirectoriesInDomains(NSDocumentDirectory, NSUserDomainMask, YES)[0];
//2.拼接文件路径
NSString *dicFile=[s2 stringByAppendingString:@"/dictionary.plist"];
//3.准备内容
NSDictionary *dic=@{@"1":@"a",@"2":@"b",@"3":@"c"};
//4.写入
[dic writeToFile:dicFile atomically:YES];
//5.读取数据
NSDictionary *d=[NSDictionary dictionaryWithContentsOfFile:dicFile];
NSLog(@"%@",d);
***********************************
NSString *documentPath=NSSearchPathForDirectoriesInDomains(NSDocumentDirectory, NSUserDomainMask, YES)[0];
NSString *path=[documentPath stringByAppendingString:@"/Person7"];
//创建文件
[[NSFileManager defaultManager] createDirectoryAtPath:path withIntermediateDirectories:YES attributes:nil error:nil];
NSLog(@"%@",path);
//修改文件
NSString *stu=[documentPath stringByAppendingString:@"/student"];
[[NSFileManager defaultManager] moveItemAtPath:path toPath:stu error:nil];
//删除文件
[[NSFileManager defaultManager] removeItemAtPath:stu error:nil];
*********************************************
归档
1.先在要归档的类里(如Person类.h中)遵循coding协议
2.在(person.m中)遵循协议方法(一个归档,一个反归档)
#define kname @"name"
#define kage @"age"
@implementation Person
//进行归档编码时候码调用(系统调用)
-(void)encodeWithCoder:(NSCoder *)aCoder
{
//对属性进行编码
[aCoder encodeObject:self.name forKey:kname];
[aCoder encodeObject:self.age forKey:kage];
}
//反归档
-(id)initWithCoder:(NSCoder *)aDecoder
{
self=[super init];
//反编码
if (self) {
self.name=[aDecoder decodeObjectForKey:kname];
self.age=[aDecoder decodeObjectForKey:kage];
}
return self;
}
3.实现归档反归档
*******归档方法一*******
//创建Person类的实例对象
Person *person1=[[Person alloc] init];
[email protected]"张三";
[email protected]"39";
Person *person2=[[Person alloc] init];
[email protected]"李四";
[email protected]"18";
//归档使用的NSData
NSMutableData *person1Data=[NSMutableData data];
//创建归档工具
NSKeyedArchiver *achiver=[[NSKeyedArchiver alloc] initForWritingWithMutableData:person1Data];
//进行归档
[achiver encodeObject:person1 forKey:kPerson1];
[achiver encodeObject:person2 forKey:kPerson2];
//完成转换,结束归档
[achiver finishEncoding];
//获取Document
NSString *person1Path=NSSearchPathForDirectoriesInDomains(NSDocumentDirectory, NSUserDomainMask, YES)[0];
//拼接路径
NSString *pPath=[person1Path stringByAppendingString:@"/Person"];
//写入
[person1Data writeToFile:pPath atomically:YES];
NSLog(@"%@",person1Path);
//反归档
//通过文件路径获取data数据
NSData *unData=[NSData dataWithContentsOfFile:pPath];
//反归档工具
NSKeyedUnarchiver *unArchiver=[[NSKeyedUnarchiver alloc] initForReadingWithData:unData];
//反归档
Person *p=[unArchiver decodeObjectForKey:kPerson1];
Person *p2=[unArchiver decodeObjectForKey:kPerson2];
//结束反归档
[unArchiver finishDecoding];
NSLog(@"name:%@",p.name);
NSLog(@"%@",p2.name);
*************************************
****归档方法二***********
//获取 documen路径
NSString *path=NSSearchPathForDirectoriesInDomains(NSDocumentDirectory, NSUserDomainMask, YES)[0];
NSString *filepath=[path stringByAppendingString:@"/personArray.plist"];
Person *pn1=[[Person alloc] init];
pn1.name=@"1";
pn1.age=@"2";
Person *pn2=[[Person alloc] init];
pn2.name=@"3";
pn2.age=@"4";
NSArray *a=@[pn1,pn2];
//归档
[NSKeyedArchiver archiveRootObject:a toFile:filepath];
//反归档
NSArray *arr= [NSKeyedUnarchiver unarchiveObjectWithFile:filepath];
NSLog(@"%@",[arr[0] name]);