转:http://blog.****.net/marujunyy/article/details/11579183
使用目录的常用方法:
- //获取当前目录
- - (NSString *)currentDirectoryPath
- //更改当前目录
- - (BOOL)changeCurrentDirectoryPath:(NSString *)path
- //复制目录或文件
- - (BOOL)copyItemAtPath:(NSString *)srcPath toPath:(NSString *)dstPath error:(NSError **)error
- //创建一个新的目录
- - (BOOL)createDirectoryAtPath:(NSString *)path withIntermediateDirectories:(BOOL)createIntermediates attributes:(NSDictionary *)attributes error:(NSError **)error
- //测试文件是不是目录
- - (BOOL)fileExistsAtPath:(NSString *)path isDirectory:(BOOL *)isDirectory
- //列出目录下的内容(不会递归)
- - (NSArray *)contentsOfDirectoryAtPath:(NSString *)path error:(NSError **)error
- //枚举目录内容(会递归)
- - (NSDirectoryEnumerator *)enumeratorAtPath:(NSString *)path
- //删除一个文件,文件夹,链接
- - (BOOL)removeItemAtPath:(NSString *)path error:(NSError **)error
- //移动(重命名)目录到一个指定的路径
- - (BOOL)moveItemAtPath:(NSString *)srcPath toPath:(NSString *)dstPath error:(NSError **)error
- //操作目录
- NSFileManager *fm = [[NSFileManager alloc]init];
- NSString *dirName = @"testdir";
- NSString *path = [fm currentDirectoryPath]; //获取当前目录路径.
- //新建目录
- if ([fm createDirectoryAtPath:dirName withIntermediateDirectories:YES attributes:nil error:NULL] == NO) {
- NSLog(@"Couldn't create dir");
- }
- //重命名目录
- if ([fm moveItemAtPath:dirName toPath:@"newdir" error:NULL] == NO) {
- NSLog(@"Directory rename failed");
- }
- //修改路径到新目录
- if ([fm changeCurrentDirectoryPath:@"newdir"] == NO) {
- NSLog(@"change directory failed");
- }
- //返回当前路径
- path = [fm currentDirectoryPath];
- NSLog(@"Current directory path is %@",path);
- //删除目录
- if ([fm removeItemAtPath:path error:NULL] == NO) {
- NSLog(@"remove directory failed");
- }
- //枚举目录中的内容
- NSArray *dirArray;
- NSFileManager *fm = [[NSFileManager alloc]init];
- NSString *dirPath = [fm currentDirectoryPath]; //当前目录
- NSDirectoryEnumerator *dirEnum = [fm enumeratorAtPath:dirPath]; //开始枚举过程,将其存入dirEnum中.
- //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.
- NSString *file;
- while ((file = [dirEnum nextObject])) {
- if ([[file pathExtension] isEqualToString: @"doc"]){ //找出目录下面所有的doc文件
- NSString *fullPath = [dirPath stringByAppendingPathComponent:file];
- NSLog(@"%@",fullPath);
- }
- }
- 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 (NSString *path in dirArray){ //快速枚举数组中的内容并打印.
- NSLog(@"%@",path);
- }
- NSFileManager *fm = [[NSFileManager alloc]init];
- NSString *fName = @"path.m";
- NSString *upath = @"~s0s0/123/xxx/../321/./path.m";
- NSString *path, *tempdir, *extension, *homedir, *fullpath;
- NSArray *components;
- fm = [[NSFileManager alloc]init];
- //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.
- tempdir = NSTemporaryDirectory();
- NSLog(@"临时文件夹路径为:%@",tempdir);
- path = [fm currentDirectoryPath]; //返回当前目录路径
- //lastPathComponent方法用与提取路径中最后一个目录名.
- NSLog(@"父目录名: %@",[path lastPathComponent]);
- //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.
- fullpath = [path stringByAppendingPathComponent:fName];
- NSLog(@"完整路径为:%@ to %@",fName,fullpath);
- //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.
- extension = [fullpath pathExtension];
- NSLog(@"extension for %@ is %@ ",fullpath, extension);
- //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
- homedir = NSHomeDirectory();
- NSLog(@"主目录为 : %@",homedir);
- //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.
- components = [homedir pathComponents];
- for (path in components){
- NSLog(@"%@",path); //依次输出数组components中保存的元素.
- }
- //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.
- NSLog(@"%@ -> %@",upath, [upath stringByStandardizingPath]);