目录获取
获取沙盒的主目录路径:
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return NSHomeDirectory();
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获取沙盒中Documents的目录路径:
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+ (NSString *)documentsDir {
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return [NSSearchPathForDirectoriesInDomains(NSDocumentDirectory, NSUserDomainMask, YES) firstObject];
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获取沙盒中Library的目录路径:
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+ (NSString *)libraryDir {
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return [NSSearchPathForDirectoriesInDomains(NSLibraryDirectory, NSUserDomainMask, YES) lastObject];
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获取沙盒中Libarary/Preferences的目录路径:
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+ (NSString *)preferencesDir {
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NSString *libraryDir = [NSSearchPathForDirectoriesInDomains(NSLibraryDirectory, NSUserDomainMask, YES) lastObject];
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return [libraryDir stringByAppendingPathComponent:@"Preferences"];
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获取沙盒中Library/Caches的目录路径:
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+ (NSString *)cachesDir {
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return [NSSearchPathForDirectoriesInDomains(NSCachesDirectory, NSUserDomainMask, YES) firstObject];
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获取沙盒中tmp的目录路径:
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return NSTemporaryDirectory();
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2、创建文件(夹)
创建文件夹:
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+ (BOOL)createDirectoryAtPath:(NSString *)path error:(NSError *__autoreleasing *)error {
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NSFileManager *manager = [NSFileManager defaultManager];
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/* createDirectoryAtPath:withIntermediateDirectories:attributes:error:
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BOOL isSuccess = [manager createDirectoryAtPath:path withIntermediateDirectories:YES attributes:nil error:error];
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创建文件:
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+ (BOOL)createFileAtPath:(NSString *)path overwrite:(BOOL)overwrite error:(NSError *__autoreleasing *)error {
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NSString *directoryPath = [self directoryAtPath:path];
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if (![self isExistsAtPath:directoryPath]) {
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if (![self createDirectoryAtPath:directoryPath error:error]) {
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// 如果文件存在,并不想覆盖,那么直接返回YES。
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if ([self isExistsAtPath:path]) {
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BOOL isSuccess = [[NSFileManager defaultManager] createFileAtPath:path contents:nil attributes:nil];
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获取文件创建的时间或者修改的时间:
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+ (NSDate *)creationDateOfItemAtPath:(NSString *)path error:(NSError *__autoreleasing *)error {
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return (NSDate *)[self attributeOfItemAtPath:path forKey:NSFileCreationDate error:error];
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+ (NSDate *)modificationDateOfItemAtPath:(NSString *)path error:(NSError *__autoreleasing *)error {
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return (NSDate *)[self attributeOfItemAtPath:path forKey:NSFileModificationDate error:error];
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3、写入文件内容
按照文件路径向文件写入内容,内容可为数组、字典、NSData等等:
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+ (BOOL)writeFileAtPath:(NSString *)path content:(NSObject *)content error:(NSError *__autoreleasing *)error {
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[NSException raise:@"非法的文件内容" format:@"文件内容不能为nil"];
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if ([self isExistsAtPath:path]) {
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if ([content isKindOfClass:[NSMutableArray class]]) {//文件内容为可变数组
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[(NSMutableArray *)content writeToFile:path atomically:YES];
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}else if ([content isKindOfClass:[NSArray class]]) {//文件内容为不可变数组
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[(NSArray *)content writeToFile:path atomically:YES];
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}else if ([content isKindOfClass:[NSMutableData class]]) {//文件内容为可变NSMutableData
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[(NSMutableData *)content writeToFile:path atomically:YES];
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}else if ([content isKindOfClass:[NSData class]]) {//文件内容为NSData
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[(NSData *)content writeToFile:path atomically:YES];
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}else if ([content isKindOfClass:[NSMutableDictionary class]]) {//文件内容为可变字典
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[(NSMutableDictionary *)content writeToFile:path atomically:YES];
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}else if ([content isKindOfClass:[NSDictionary class]]) {//文件内容为不可变字典
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[(NSDictionary *)content writeToFile:path atomically:YES];
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}else if ([content isKindOfClass:[NSJSONSerialization class]]) {//文件内容为JSON类型
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[(NSDictionary *)content writeToFile:path atomically:YES];
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}else if ([content isKindOfClass:[NSMutableString class]]) {//文件内容为可变字符串
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[[((NSString *)content) dataUsingEncoding:NSUTF8StringEncoding] writeToFile:path atomically:YES];
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}else if ([content isKindOfClass:[NSString class]]) {//文件内容为不可变字符串
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[[((NSString *)content) dataUsingEncoding:NSUTF8StringEncoding] writeToFile:path atomically:YES];
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}else if ([content isKindOfClass:[UIImage class]]) {//文件内容为图片
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[UIImagePNGRepresentation((UIImage *)content) writeToFile:path atomically:YES];
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}else if ([content conformsToProtocol:@protocol(NSCoding)]) {//文件归档
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[NSKeyedArchiver archiveRootObject:content toFile:path];
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[NSException raise:@"非法的文件内容" format:@"文件类型%@异常,无法被处理。", NSStringFromClass([content class])];
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+ (BOOL)isExistsAtPath:(NSString *)path {
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return [[NSFileManager defaultManager] fileExistsAtPath:path];
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4、删除文件(夹)
删除文件(夹)
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+ (BOOL)removeItemAtPath:(NSString *)path error:(NSError *__autoreleasing *)error {
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return [[NSFileManager defaultManager] removeItemAtPath:path error:error];
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清空Caches或者temp文件夹:
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+ (BOOL)clearCachesDirectory {
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NSArray *subFiles = [self listFilesInCachesDirectoryByDeep:NO];
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for (NSString *file in subFiles) {
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NSString *absolutePath = [[self cachesDir] stringByAppendingPathComponent:file];
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isSuccess &= [self removeItemAtPath:absolutePath];
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+ (BOOL)clearTmpDirectory {
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NSArray *subFiles = [self listFilesInTmpDirectoryByDeep:NO];
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for (NSString *file in subFiles) {
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NSString *absolutePath = [[self tmpDir] stringByAppendingPathComponent:file];
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isSuccess &= [self removeItemAtPath:absolutePath];
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5、复制文件(夹)
依据源文件的路径复制一份到目标路径:
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*参数3、当要复制到的文件路径文件存在,会复制失败,这里传入是否覆盖
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+ (BOOL)copyItemAtPath:(NSString *)path toPath:(NSString *)toPath overwrite:(BOOL)overwrite error:(NSError *__autoreleasing *)error {
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if (![self isExistsAtPath:path]) {
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[NSException raise:@"非法的源文件路径" format:@"源文件路径%@不存在,请检查源文件路径", path];
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NSString *toDirPath = [self directoryAtPath:toPath];
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if (![self isExistsAtPath:toDirPath]) {
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if (![self createDirectoryAtPath:toDirPath error:error]) {
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if ([self isExistsAtPath:toPath]) {
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[self removeItemAtPath:toPath error:error];
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// 复制文件,如果不覆盖且文件已存在则会复制失败
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BOOL isSuccess = [[NSFileManager defaultManager] copyItemAtPath:path toPath:toPath error:error];
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+ (BOOL)isExistsAtPath:(NSString *)path {
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return [[NSFileManager defaultManager] fileExistsAtPath:path];
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6、 移动文件(夹)
依据源文件的路径移动到目标路径:
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*参数3、当要移动到的文件路径文件存在,会移动失败,这里传入是否覆盖
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+ (BOOL)moveItemAtPath:(NSString *)path toPath:(NSString *)toPath overwrite:(BOOL)overwrite error:(NSError *__autoreleasing *)error {
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if (![self isExistsAtPath:path]) {
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[NSException raise:@"非法的源文件路径" format:@"源文件路径%@不存在,请检查源文件路径", path];
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NSString *toDirPath = [self directoryAtPath:toPath];
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if (![self isExistsAtPath:toDirPath]) {
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if (![self createDirectoryAtPath:toDirPath error:error]) {
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if ([self isExistsAtPath:toPath]) {
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[self removeItemAtPath:toPath error:error];
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[self removeItemAtPath:path error:error];
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// 移动文件,当要移动到的文件路径文件存在,会移动失败
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BOOL isSuccess = [[NSFileManager defaultManager] moveItemAtPath:path toPath:toPath error:error];
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7、根据URL获取文件名
根据文件路径获取文件名称,是否需要后缀:
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+ (NSString *)fileNameAtPath:(NSString *)path suffix:(BOOL)suffix {
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NSString *fileName = [path lastPathComponent];
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fileName = [fileName stringByDeletingPathExtension];
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获取文件所在的文件夹路径:
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+ (NSString *)directoryAtPath:(NSString *)path {
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return [path stringByDeletingLastPathComponent];
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根据文件路径获取文件扩展类型:
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+ (NSString *)suffixAtPath:(NSString *)path {
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return [path pathExtension];
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8、判断文件(夹)是否存在
判断文件路径是否存在:
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+ (BOOL)isExistsAtPath:(NSString *)path {
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return [[NSFileManager defaultManager] fileExistsAtPath:path];
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判断路径是否为空(判空条件是文件大小为0,或者是文件夹下没有子文件):
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+ (BOOL)isEmptyItemAtPath:(NSString *)path error:(NSError *__autoreleasing *)error {
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return ([self isFileAtPath:path error:error] &&
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[[self sizeOfItemAtPath:path error:error] intValue] == 0) ||
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([self isDirectoryAtPath:path error:error] &&
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[[self listFilesInDirectoryAtPath:path deep:NO] count] == 0);
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判断目录是否是文件夹:
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+ (BOOL)isDirectoryAtPath:(NSString *)path error:(NSError *__autoreleasing *)error {
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return ([self attributeOfItemAtPath:path forKey:NSFileType error:error] == NSFileTypeDirectory);
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判断目录是否是文件:
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+ (BOOL)isFileAtPath:(NSString *)path error:(NSError *__autoreleasing *)error {
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return ([self attributeOfItemAtPath:path forKey:NSFileType error:error] == NSFileTypeRegular);
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判断目录是否可以执行:
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+ (BOOL)isExecutableItemAtPath:(NSString *)path {
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return [[NSFileManager defaultManager] isExecutableFileAtPath:path];
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判断目录是否可读:
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+ (BOOL)isReadableItemAtPath:(NSString *)path {
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return [[NSFileManager defaultManager] isReadableFileAtPath:path];
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判断目录是否可写:
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+ (BOOL)isWritableItemAtPath:(NSString *)path {
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return [[NSFileManager defaultManager] isWritableFileAtPath:path];
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9、获取文件(夹)大小
获取文件大小(NSNumber):
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+ (NSNumber *)sizeOfItemAtPath:(NSString *)path error:(NSError *__autoreleasing *)error {
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return (NSNumber *)[self attributeOfItemAtPath:path forKey:NSFileSize error:error];
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获取文件夹大小(NSNumber):
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+ (NSNumber *)sizeOfDirectoryAtPath:(NSString *)path error:(NSError *__autoreleasing *)error {
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if ([self isDirectoryAtPath:path error:error]) {
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NSArray *subPaths = [self listFilesInDirectoryAtPath:path deep:YES];
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NSEnumerator *contentsEnumurator = [subPaths objectEnumerator];
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unsigned long long int folderSize = 0;
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while (file = [contentsEnumurator nextObject]) {
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NSDictionary *fileAttributes = [[NSFileManager defaultManager] attributesOfItemAtPath:[path stringByAppendingPathComponent:file] error:nil];
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folderSize += [[fileAttributes objectForKey:NSFileSize] intValue];
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return [NSNumber numberWithUnsignedLongLong:folderSize];
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获取文件大小(单位为字节):
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+ (NSString *)sizeFormattedOfItemAtPath:(NSString *)path error:(NSError *__autoreleasing *)error {
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NSNumber *size = [self sizeOfItemAtPath:path error:error];
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return [self sizeFormatted:size];
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+(NSString *)sizeFormatted:(NSNumber *)size {
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/*NSByteCountFormatterCountStyle枚举
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*NSByteCountFormatterCountStyleFile 字节为单位,采用十进制的1000bytes = 1KB
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*NSByteCountFormatterCountStyleMemory 字节为单位,采用二进制的1024bytes = 1KB
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*NSByteCountFormatterCountStyleDecimal KB为单位,采用十进制的1000bytes = 1KB
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*NSByteCountFormatterCountStyleBinary KB为单位,采用二进制的1024bytes = 1KB
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return [NSByteCountFormatter stringFromByteCount:[size unsignedLongLongValue] countStyle:NSByteCountFormatterCountStyleFile];
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获取文件夹大小(单位为字节):
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+ (NSString *)sizeFormattedOfDirectoryAtPath:(NSString *)path error:(NSError *__autoreleasing *)error {
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NSNumber *size = [self sizeOfDirectoryAtPath:path error:error];
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return [self sizeFormatted:size];
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+(NSString *)sizeFormatted:(NSNumber *)size {
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/*NSByteCountFormatterCountStyle枚举
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*NSByteCountFormatterCountStyleFile 字节为单位,采用十进制的1000bytes = 1KB
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*NSByteCountFormatterCountStyleMemory 字节为单位,采用二进制的1024bytes = 1KB
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*NSByteCountFormatterCountStyleDecimal KB为单位,采用十进制的1000bytes = 1KB
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*NSByteCountFormatterCountStyleBinary KB为单位,采用二进制的1024bytes = 1KB
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return [NSByteCountFormatter stringFromByteCount:[size unsignedLongLongValue] countStyle:NSByteCountFormatterCountStyleFile];
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10、遍历文件夹
遍历文件夹,分为深遍历和浅遍历:
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参数2:是否深遍历 (1. 浅遍历:返回当前目录下的所有文件和文件夹;
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2. 深遍历:返回当前目录下及子目录下的所有文件和文件夹)
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+ (NSArray *)listFilesInDirectoryAtPath:(NSString *)path deep:(BOOL)deep {
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NSFileManager *manager = [NSFileManager defaultManager];
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NSArray *deepArr = [manager subpathsOfDirectoryAtPath:path error:&error];
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NSArray *shallowArr = [manager contentsOfDirectoryAtPath:path error:&error];
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11、获取文件属性
根据key获取文件某个属性:
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FOUNDATION_EXPORT NSString * const NSFileType;
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FOUNDATION_EXPORT NSString * const NSFileTypeDirectory;
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FOUNDATION_EXPORT NSString * const NSFileTypeRegular;
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FOUNDATION_EXPORT NSString * const NSFileTypeSymbolicLink;
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FOUNDATION_EXPORT NSString * const NSFileTypeSocket;
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FOUNDATION_EXPORT NSString * const NSFileTypeCharacterSpecial;
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FOUNDATION_EXPORT NSString * const NSFileTypeBlockSpecial;
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FOUNDATION_EXPORT NSString * const NSFileTypeUnknown;
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FOUNDATION_EXPORT NSString * const NSFileSize;
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FOUNDATION_EXPORT NSString * const NSFileModificationDate;
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FOUNDATION_EXPORT NSString * const NSFileReferenceCount;
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FOUNDATION_EXPORT NSString * const NSFileDeviceIdentifier;
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FOUNDATION_EXPORT NSString * const NSFileOwnerAccountName;
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FOUNDATION_EXPORT NSString * const NSFileGroupOwnerAccountName;
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FOUNDATION_EXPORT NSString * const NSFilePosixPermissions;
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FOUNDATION_EXPORT NSString * const NSFileSystemNumber;
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FOUNDATION_EXPORT NSString * const NSFileSystemFileNumber;
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FOUNDATION_EXPORT NSString * const NSFileExtensionHidden;
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FOUNDATION_EXPORT NSString * const NSFileHFSCreatorCode;
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FOUNDATION_EXPORT NSString * const NSFileHFSTypeCode;
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FOUNDATION_EXPORT NSString * const NSFileImmutable;
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FOUNDATION_EXPORT NSString * const NSFileAppendOnly;
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FOUNDATION_EXPORT NSString * const NSFileCreationDate;
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FOUNDATION_EXPORT NSString * const NSFileOwnerAccountID;
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FOUNDATION_EXPORT NSString * const NSFileGroupOwnerAccountID;
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FOUNDATION_EXPORT NSString * const NSFileBusy;
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FOUNDATION_EXPORT NSString * const NSFileProtectionKey NS_AVAILABLE_IOS(4_0);
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FOUNDATION_EXPORT NSString * const NSFileProtectionNone NS_AVAILABLE_IOS(4_0);
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FOUNDATION_EXPORT NSString * const NSFileProtectionComplete NS_AVAILABLE_IOS(4_0);
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FOUNDATION_EXPORT NSString * const NSFileProtectionCompleteUnlessOpen NS_AVAILABLE_IOS(5_0);
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FOUNDATION_EXPORT NSString * const NSFileProtectionCompleteUntilFirstUserAuthentication NS_AVAILABLE_IOS(5_0);
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+ (id)attributeOfItemAtPath:(NSString *)path forKey:(NSString *)key error:(NSError *__autoreleasing *)error {
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return [[self attributesOfItemAtPath:path error:error] objectForKey:key];
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获取文件属性集合:
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+ (NSDictionary *)attributesOfItemAtPath:(NSString *)path error:(NSError *__autoreleasing *)error {
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return [[NSFileManager defaultManager] attributesOfItemAtPath:path error:error];
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原文:https://www.cnblogs.com/somepark/p/12792467.html