使用目录
目录方法:
- (NSString *)currentDirectoryPath
获取当前目录
- (BOOL)changeCurrentDirectoryPath:(NSString *)path
更改当前目录
- (BOOL)copyItemAtPath:(NSString *)srcPath toPath:(NSString *)dstPath error:(NSError **)error
复制目录或文件
- (BOOL)createDirectoryAtPath:(NSString *)path withIntermediateDirectories:(BOOL)createIntermediates attributes:(NSDictionary *)attributes error:(NSError **)error
创建一个新的目录
- (BOOL)fileExistsAtPath:(NSString *)path isDirectory:(BOOL *)isDirectory
测试文件是不是目录
- (NSArray *)contentsOfDirectoryAtPath:(NSString *)path error:(NSError **)error
列目录(不会递归)
- (NSDirectoryEnumerator *)enumeratorAtPath:(NSString *)path
枚举目录内容(会递归)
- (BOOL)removeItemAtPath:(NSString *)path error:(NSError **)error
删除一个文件,文件夹,链接
- (BOOL)moveItemAtPath:(NSString *)srcPath toPath:(NSString *)dstPath error:(NSError **)error
移动(重命名)目录到一个指定的路径
NSPathUtilities.h 包含了NSString的函数和分类扩展,用于操作路径名.
#import <Foundation/NSObject.h>
#import <Foundation/NSAutoreleasePool.h>
#import <Foundation/NSString.h>
#import <Foundation/NSFileManager.h>
#import <Foundation/NSArray.h>
#import <Foundation/NSPathUtilities.h>
int main (int argc, const char * argv[]) {
NSAutoreleasePool * pool = [[NSAutoreleasePool alloc] init];
NSFileManager *fm;
//NSFileManager对象
NSString *dirName = @"testdir";
NSString *path;
fm = [[NSFileManager alloc]init];
path = [fm currentDirectoryPath];
NSLog(@"%@",path);
//获取当前目录路径.
if ([fm createDirectoryAtPath:dirName withIntermediateDirectories:YES attributes:nil error:NULL] == NO) {
NSLog(@"Couldn't create dir");
return 1;
}
//新建目录
if ([fm moveItemAtPath:dirName toPath"newdir" error:NULL] == NO) {
NSLog(@"Directory rename failed");
return 2;
}
//重命名目录
if ([fm changeCurrentDirectoryPath"newdir"] == NO) {
NSLog(@"change directory failed");
return 3;
}
//修改路径到新目录
path = [fm currentDirectoryPath];
//返回当前路径
NSLog(@"Current directory path is %@",path);
//打印
NSLog(@"successful");
[pool drain];
return 0;
}
枚举目录中的内容:
NSPathUtilities.h 包含了NSString的函数和分类扩展,用于操作路径名.
#import <Foundation/NSObject.h>
#import <Foundation/NSAutoreleasePool.h>
#import <Foundation/NSString.h>
#import <Foundation/NSFileManager.h>
#import <Foundation/NSArray.h>
#import <Foundation/NSPathUtilities.h>
int main (int argc, const char * argv[]) {
NSAutoreleasePool * pool = [[NSAutoreleasePool alloc] init];
NSFileManager *fm;
NSString *path;
NSDirectoryEnumerator *dirEnum;
NSArray *dirArray;
fm = [[NSFileManager alloc]init];
path = [fm currentDirectoryPath];
//当前目录
dirEnum = [fm enumeratorAtPath:path];
//开始枚举过程,将其存入dirEnum中.
NSLog(@"路径:%@",path);
//打印当前路径
while ((path = [ dirEnum nextObject]) != nil) {
NSLog(@"%@",path);
}
//向dirEnum发送nextObject消息,返回下一个文件路径,当没有可供枚举时,返回nil.
//enumeratorAtPath:方法会递归打印.
dirArray = [fm contentsOfDirectoryAtPath:[fm currentDirectoryPath] error:NULL];
NSLog(@"内容为:");
//使用contentsOfDirectoryAtPath:方法枚举当前路径中的文件并存入数组dirArray.
for (path in dirArray)
NSLog(@"%@",path);
//快速枚举数组中的内容并打印.
[pool drain];
return 0;
}
使用路径:
NSPathUtilities.h 包含了NSString的函数和分类扩展,用于操作路径名.
#import
#import
#import
#import
#import
#import
int main (int argc, const char * argv[]) {
NSAutoreleasePool * pool = [[NSAutoreleasePool alloc] init];
NSFileManager *fm;
NSString *fName = @"path.m";
NSString *upath = @"~s0s0/123/xxx/../321/./path.m";
NSString *path, *tempdir, *extension, *homedir, *fullpath;
NSArray *components;
fm = [[NSFileManager alloc]init];
tempdir = NSTemporaryDirectory();
//NSTemporaryDirectory()函数返回可以用来创建临时文件的目录路径名,如果要创建文件,完成任务后要删除;确保文件名是唯一的.
NSLog(@"临时文件夹路径为:%@",tempdir);
path = [fm currentDirectoryPath];
//返回当前目录路径
NSLog(@"父目录名: %@",[path lastPathComponent]);
//lastPathComponent方法用与提取路径中最后一个目录名.
fullpath = [path stringByAppendingPathComponent:fName];
//stringByAppendingPathComponent:方法将文件名插入到路径的末尾,这样就能显示一个文件的完整路径.
NSLog(@"完整路径为:%@ to %@",fName,fullpath);
//打印一个文件的完整路径.
extension = [fullpath pathExtension];
//pathExtension方法返回一个完整路径中的文件扩展名,如果没有扩展名,就返回空字符.
NSLog(@"extension for %@ is %@ ",fullpath, extension);
homedir = NSHomeDirectory();
//NSHomeDirectory()函数返回当前用户的主目录
//NSHomeDirectoryForUser(username)函数可以提供用户名做参数,并返回主目录名
NSLog(@"主目录为 : %@",homedir);
components = [homedir pathComponents];
//pathComponents方法返回一个数组,数组中包含一个路径中的每个组成部分.
for (path in components)
NSLog(@"%@",path);
//依次输出数组components中保存的元素.
NSLog(@"%@ -> %@",upath, [upath stringByStandardizingPath]);
//stringByStandardizingPath方法将原路径中的代字符转化为完整路径.
//如果是路径名字中出现代字符,可以使用stringByExpandingTildeInPath方法.
[pool drain];
return 0;
}