目录获取
获取沙盒的主目录路径:
-
+ (NSString *)homeDir {
-
return NSHomeDirectory();
-
}
-
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获取沙盒中Documents的目录路径:
-
+ (NSString *)documentsDir {
-
return [NSSearchPathForDirectoriesInDomains(NSDocumentDirectory, NSUserDomainMask, YES) firstObject];
-
}
-
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获取沙盒中Library的目录路径:
-
+ (NSString *)libraryDir {
-
return [NSSearchPathForDirectoriesInDomains(NSLibraryDirectory, NSUserDomainMask, YES) lastObject];
-
}
-
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获取沙盒中Libarary/Preferences的目录路径:
-
+ (NSString *)preferencesDir {
-
NSString *libraryDir = [NSSearchPathForDirectoriesInDomains(NSLibraryDirectory, NSUserDomainMask, YES) lastObject];
-
return [libraryDir stringByAppendingPathComponent:@"Preferences"];
-
}
-
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获取沙盒中Library/Caches的目录路径:
-
+ (NSString *)cachesDir {
-
return [NSSearchPathForDirectoriesInDomains(NSCachesDirectory, NSUserDomainMask, YES) firstObject];
-
}
-
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获取沙盒中tmp的目录路径:
-
+ (NSString *)tmpDir {
-
return NSTemporaryDirectory();
-
}
-
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2、创建文件(夹)
创建文件夹:
-
+ (BOOL)createDirectoryAtPath:(NSString *)path error:(NSError *__autoreleasing *)error {
-
NSFileManager *manager = [NSFileManager defaultManager];
-
/* createDirectoryAtPath:withIntermediateDirectories:attributes:error:
-
* 参数1:创建的文件夹的路径
-
* 参数2:是否创建媒介的布尔值,一般为YES
-
* 参数3: 属性,没有就置为nil
-
* 参数4: 错误信息
-
*/
-
BOOL isSuccess = [manager createDirectoryAtPath:path withIntermediateDirectories:YES attributes:nil error:error];
-
return isSuccess;
-
}
-
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创建文件:
-
/*创建文件
-
*参数1:文件创建的路径
-
*参数2:写入文件的内容
-
*参数3:假如已经存在此文件是否覆盖
-
*参数4:错误信息
-
*/
-
+ (BOOL)createFileAtPath:(NSString *)path overwrite:(BOOL)overwrite error:(NSError *__autoreleasing *)error {
-
// 如果文件夹路径不存在,那么先创建文件夹
-
NSString *directoryPath = [self directoryAtPath:path];
-
if (![self isExistsAtPath:directoryPath]) {
-
// 创建文件夹
-
if (![self createDirectoryAtPath:directoryPath error:error]) {
-
return NO;
-
}
-
}
-
// 如果文件存在,并不想覆盖,那么直接返回YES。
-
if (!overwrite) {
-
if ([self isExistsAtPath:path]) {
-
return YES;
-
}
-
}
-
/*创建文件
-
*参数1:创建文件的路径
-
*参数2:创建文件的内容(NSData类型)
-
*参数3:文件相关属性
-
*/
-
BOOL isSuccess = [[NSFileManager defaultManager] createFileAtPath:path contents:nil attributes:nil];
-
-
return isSuccess;
-
}
-
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获取文件创建的时间或者修改的时间:
-
//获取文件创建的时间
-
+ (NSDate *)creationDateOfItemAtPath:(NSString *)path error:(NSError *__autoreleasing *)error {
-
return (NSDate *)[self attributeOfItemAtPath:path forKey:NSFileCreationDate error:error];
-
}
-
-
//获取文件修改的时间
-
+ (NSDate *)modificationDateOfItemAtPath:(NSString *)path error:(NSError *__autoreleasing *)error {
-
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:
-
#pragma mark 写入文件内容
-
/*参数1:文件路径
-
*参数2:文件内容
-
*参数3:错误信息
-
*/
-
+ (BOOL)writeFileAtPath:(NSString *)path content:(NSObject *)content error:(NSError *__autoreleasing *)error {
-
//判断文件内容是否为空
-
if (!content) {
-
[NSException raise:@"非法的文件内容" format:@"文件内容不能为nil"];
-
return NO;
-
}
-
//判断文件(夹)是否存在
-
if ([self isExistsAtPath:path]) {
-
if ([content isKindOfClass:[NSMutableArray class]]) {//文件内容为可变数组
-
[(NSMutableArray *)content writeToFile:path atomically:YES];
-
}else if ([content isKindOfClass:[NSArray class]]) {//文件内容为不可变数组
-
[(NSArray *)content writeToFile:path atomically:YES];
-
}else if ([content isKindOfClass:[NSMutableData class]]) {//文件内容为可变NSMutableData
-
[(NSMutableData *)content writeToFile:path atomically:YES];
-
}else if ([content isKindOfClass:[NSData class]]) {//文件内容为NSData
-
[(NSData *)content writeToFile:path atomically:YES];
-
}else if ([content isKindOfClass:[NSMutableDictionary class]]) {//文件内容为可变字典
-
[(NSMutableDictionary *)content writeToFile:path atomically:YES];
-
}else if ([content isKindOfClass:[NSDictionary class]]) {//文件内容为不可变字典
-
[(NSDictionary *)content writeToFile:path atomically:YES];
-
}else if ([content isKindOfClass:[NSJSONSerialization class]]) {//文件内容为JSON类型
-
[(NSDictionary *)content writeToFile:path atomically:YES];
-
}else if ([content isKindOfClass:[NSMutableString class]]) {//文件内容为可变字符串
-
[[((NSString *)content) dataUsingEncoding:NSUTF8StringEncoding] writeToFile:path atomically:YES];
-
}else if ([content isKindOfClass:[NSString class]]) {//文件内容为不可变字符串
-
[[((NSString *)content) dataUsingEncoding:NSUTF8StringEncoding] writeToFile:path atomically:YES];
-
}else if ([content isKindOfClass:[UIImage class]]) {//文件内容为图片
-
[UIImagePNGRepresentation((UIImage *)content) writeToFile:path atomically:YES];
-
}else if ([content conformsToProtocol:@protocol(NSCoding)]) {//文件归档
-
[NSKeyedArchiver archiveRootObject:content toFile:path];
-
}else {
-
[NSException raise:@"非法的文件内容" format:@"文件类型%@异常,无法被处理。", NSStringFromClass([content class])];
-
-
return NO;
-
}
-
}else {
-
return NO;
-
}
-
return YES;
-
}
-
#pragma mark - 判断文件(夹)是否存在
-
+ (BOOL)isExistsAtPath:(NSString *)path {
-
return [[NSFileManager defaultManager] fileExistsAtPath:path];
-
}
-
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4、删除文件(夹)
删除文件(夹)
-
+ (BOOL)removeItemAtPath:(NSString *)path error:(NSError *__autoreleasing *)error {
-
return [[NSFileManager defaultManager] removeItemAtPath:path error:error];
-
}
-
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清空Caches或者temp文件夹:
-
#pragma mark 清空Cashes文件夹
-
+ (BOOL)clearCachesDirectory {
-
NSArray *subFiles = [self listFilesInCachesDirectoryByDeep:NO];
-
BOOL isSuccess = YES;
-
-
for (NSString *file in subFiles) {
-
NSString *absolutePath = [[self cachesDir] stringByAppendingPathComponent:file];
-
isSuccess &= [self removeItemAtPath:absolutePath];
-
}
-
return isSuccess;
-
}
-
#pragma mark 清空temp文件夹
-
+ (BOOL)clearTmpDirectory {
-
NSArray *subFiles = [self listFilesInTmpDirectoryByDeep:NO];
-
BOOL isSuccess = YES;
-
-
for (NSString *file in subFiles) {
-
NSString *absolutePath = [[self tmpDir] stringByAppendingPathComponent:file];
-
isSuccess &= [self removeItemAtPath:absolutePath];
-
}
-
return isSuccess;
-
}
-
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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:
-
#pragma mark - 复制文件
-
/*参数1、被复制文件路径
-
*参数2、要复制到的目标文件路径
-
*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
-
*参数4、错误信息
-
*/
-
+ (BOOL)copyItemAtPath:(NSString *)path toPath:(NSString *)toPath overwrite:(BOOL)overwrite error:(NSError *__autoreleasing *)error {
-
// 先要保证源文件路径存在,不然抛出异常
-
if (![self isExistsAtPath:path]) {
-
[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];
-
return NO;
-
}
-
//获得目标文件的上级目录
-
NSString *toDirPath = [self directoryAtPath:toPath];
-
if (![self isExistsAtPath:toDirPath]) {
-
// 创建复制路径
-
if (![self createDirectoryAtPath:toDirPath error:error]) {
-
return NO;
-
}
-
}
-
// 如果覆盖,那么先删掉原文件
-
if (overwrite) {
-
if ([self isExistsAtPath:toPath]) {
-
[self removeItemAtPath:toPath error:error];
-
}
-
}
-
// 复制文件,如果不覆盖且文件已存在则会复制失败
-
BOOL isSuccess = [[NSFileManager defaultManager] copyItemAtPath:path toPath:toPath error:error];
-
-
return isSuccess;
-
}
-
-
#pragma mark - 判断文件(夹)是否存在
-
+ (BOOL)isExistsAtPath:(NSString *)path {
-
return [[NSFileManager defaultManager] fileExistsAtPath:path];
-
}
-
复制代码
6、 移动文件(夹)
依据源文件的路径移动到目标路径:
-
#pragma mark - 移动文件(夹)
-
/*参数1、被移动文件路径
-
*参数2、要移动到的目标文件路径
-
*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
-
*参数4、错误信息
-
*/
-
+ (BOOL)moveItemAtPath:(NSString *)path toPath:(NSString *)toPath overwrite:(BOOL)overwrite error:(NSError *__autoreleasing *)error {
-
// 先要保证源文件路径存在,不然抛出异常
-
if (![self isExistsAtPath:path]) {
-
[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];
-
return NO;
-
}
-
//获得目标文件的上级目录
-
NSString *toDirPath = [self directoryAtPath:toPath];
-
if (![self isExistsAtPath:toDirPath]) {
-
// 创建移动路径
-
if (![self createDirectoryAtPath:toDirPath error:error]) {
-
return NO;
-
}
-
}
-
// 判断目标路径文件是否存在
-
if ([self isExistsAtPath:toPath]) {
-
//如果覆盖,删除目标路径文件
-
if (overwrite) {
-
//删掉目标路径文件
-
[self removeItemAtPath:toPath error:error];
-
}else {
-
//删掉被移动文件
-
[self removeItemAtPath:path error:error];
-
return YES;
-
}
-
}
-
-
// 移动文件,当要移动到的文件路径文件存在,会移动失败
-
BOOL isSuccess = [[NSFileManager defaultManager] moveItemAtPath:path toPath:toPath error:error];
-
-
return isSuccess;
-
}
-
复制代码
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:
-
#pragma mark - 根据URL获取文件名
-
/*参数1:文件路径
-
*参数2、是否需要后缀
-
*/
-
+ (NSString *)fileNameAtPath:(NSString *)path suffix:(BOOL)suffix {
-
NSString *fileName = [path lastPathComponent];
-
if (!suffix) {
-
fileName = [fileName stringByDeletingPathExtension];
-
}
-
return fileName;
-
}
-
-
复制代码
获取文件所在的文件夹路径:
-
+ (NSString *)directoryAtPath:(NSString *)path {
-
return [path stringByDeletingLastPathComponent];
-
}
-
复制代码
根据文件路径获取文件扩展类型:
-
+ (NSString *)suffixAtPath:(NSString *)path {
-
return [path pathExtension];
-
}
-
复制代码
8、判断文件(夹)是否存在
判断文件路径是否存在:
-
+ (BOOL)isExistsAtPath:(NSString *)path {
-
return [[NSFileManager defaultManager] fileExistsAtPath:path];
-
}
-
复制代码
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):
-
+ (BOOL)isEmptyItemAtPath:(NSString *)path error:(NSError *__autoreleasing *)error {
-
return ([self isFileAtPath:path error:error] &&
-
[[self sizeOfItemAtPath:path error:error] intValue] == 0) ||
-
([self isDirectoryAtPath:path error:error] &&
-
[[self listFilesInDirectoryAtPath:path deep:NO] count] == 0);
-
}
-
-
复制代码
判断目录是否是文件夹:
-
+ (BOOL)isDirectoryAtPath:(NSString *)path error:(NSError *__autoreleasing *)error {
-
return ([self attributeOfItemAtPath:path forKey:NSFileType error:error] == NSFileTypeDirectory);
-
}
-
复制代码
判断目录是否是文件:
-
+ (BOOL)isFileAtPath:(NSString *)path error:(NSError *__autoreleasing *)error {
-
return ([self attributeOfItemAtPath:path forKey:NSFileType error:error] == NSFileTypeRegular);
-
}
-
复制代码
判断目录是否可以执行:
-
+ (BOOL)isExecutableItemAtPath:(NSString *)path {
-
return [[NSFileManager defaultManager] isExecutableFileAtPath:path];
-
}
-
复制代码
判断目录是否可读:
-
+ (BOOL)isReadableItemAtPath:(NSString *)path {
-
return [[NSFileManager defaultManager] isReadableFileAtPath:path];
-
}
-
复制代码
判断目录是否可写:
-
+ (BOOL)isWritableItemAtPath:(NSString *)path {
-
return [[NSFileManager defaultManager] isWritableFileAtPath:path];
-
}
-
复制代码
9、获取文件(夹)大小
获取文件大小(NSNumber):
-
+ (NSNumber *)sizeOfItemAtPath:(NSString *)path error:(NSError *__autoreleasing *)error {
-
return (NSNumber *)[self attributeOfItemAtPath:path forKey:NSFileSize error:error];
-
}
-
复制代码
获取文件夹大小(NSNumber):
-
#pragma mark 获取文件夹的大小
-
+ (NSNumber *)sizeOfDirectoryAtPath:(NSString *)path error:(NSError *__autoreleasing *)error {
-
if ([self isDirectoryAtPath:path error:error]) {
-
//深遍历文件夹
-
NSArray *subPaths = [self listFilesInDirectoryAtPath:path deep:YES];
-
NSEnumerator *contentsEnumurator = [subPaths objectEnumerator];
-
-
NSString *file;
-
unsigned long long int folderSize = 0;
-
-
while (file = [contentsEnumurator nextObject]) {
-
NSDictionary *fileAttributes = [[NSFileManager defaultManager] attributesOfItemAtPath:[path stringByAppendingPathComponent:file] error:nil];
-
folderSize += [[fileAttributes objectForKey:NSFileSize] intValue];
-
}
-
return [NSNumber numberWithUnsignedLongLong:folderSize];
-
}
-
return nil;
-
}
-
复制代码
获取文件大小(单位为字节):
-
+ (NSString *)sizeFormattedOfItemAtPath:(NSString *)path error:(NSError *__autoreleasing *)error {
-
//先获取NSNumber类型的大小
-
NSNumber *size = [self sizeOfItemAtPath:path error:error];
-
if (size) {
-
//将文件大小格式化为字节
-
return [self sizeFormatted:size];
-
}
-
return nil;
-
}
-
-
#pragma mark 将文件大小格式化为字节
-
+(NSString *)sizeFormatted:(NSNumber *)size {
-
/*NSByteCountFormatterCountStyle枚举
-
*NSByteCountFormatterCountStyleFile 字节为单位,采用十进制的1000bytes = 1KB
-
*NSByteCountFormatterCountStyleMemory 字节为单位,采用二进制的1024bytes = 1KB
-
*NSByteCountFormatterCountStyleDecimal KB为单位,采用十进制的1000bytes = 1KB
-
*NSByteCountFormatterCountStyleBinary KB为单位,采用二进制的1024bytes = 1KB
-
*/
-
return [NSByteCountFormatter stringFromByteCount:[size unsignedLongLongValue] countStyle:NSByteCountFormatterCountStyleFile];
-
}
-
复制代码
获取文件夹大小(单位为字节):
-
+ (NSString *)sizeFormattedOfDirectoryAtPath:(NSString *)path error:(NSError *__autoreleasing *)error {
-
//先获取NSNumber类型的大小
-
NSNumber *size = [self sizeOfDirectoryAtPath:path error:error];
-
if (size) {
-
return [self sizeFormatted:size];
-
}
-
return nil;
-
}
-
#pragma mark 将文件大小格式化为字节
-
+(NSString *)sizeFormatted:(NSNumber *)size {
-
/*NSByteCountFormatterCountStyle枚举
-
*NSByteCountFormatterCountStyleFile 字节为单位,采用十进制的1000bytes = 1KB
-
*NSByteCountFormatterCountStyleMemory 字节为单位,采用二进制的1024bytes = 1KB
-
*NSByteCountFormatterCountStyleDecimal KB为单位,采用十进制的1000bytes = 1KB
-
*NSByteCountFormatterCountStyleBinary KB为单位,采用二进制的1024bytes = 1KB
-
*/
-
return [NSByteCountFormatter stringFromByteCount:[size unsignedLongLongValue] countStyle:NSByteCountFormatterCountStyleFile];
-
}
-
复制代码
10、遍历文件夹
遍历文件夹,分为深遍历和浅遍历:
-
#pragma mark - 遍历文件夹
-
/**
-
文件遍历
-
参数1:目录的绝对路径
-
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;
-
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)
-
*/
-
+ (NSArray *)listFilesInDirectoryAtPath:(NSString *)path deep:(BOOL)deep {
-
NSArray *listArr;
-
NSError *error;
-
NSFileManager *manager = [NSFileManager defaultManager];
-
if (deep) {
-
// 深遍历
-
NSArray *deepArr = [manager subpathsOfDirectoryAtPath:path error:&error];
-
if (!error) {
-
listArr = deepArr;
-
}else {
-
listArr = nil;
-
}
-
}else {
-
// 浅遍历
-
NSArray *shallowArr = [manager contentsOfDirectoryAtPath:path error:&error];
-
if (!error) {
-
listArr = shallowArr;
-
}else {
-
listArr = nil;
-
}
-
}
-
return listArr;
-
}
-
复制代码
11、获取文件属性
根据key获取文件某个属性:
-
//key的列表如:
-
FOUNDATION_EXPORT NSString * const NSFileType;
-
FOUNDATION_EXPORT NSString * const NSFileTypeDirectory;
-
FOUNDATION_EXPORT NSString * const NSFileTypeRegular;
-
FOUNDATION_EXPORT NSString * const NSFileTypeSymbolicLink;
-
FOUNDATION_EXPORT NSString * const NSFileTypeSocket;
-
FOUNDATION_EXPORT NSString * const NSFileTypeCharacterSpecial;
-
FOUNDATION_EXPORT NSString * const NSFileTypeBlockSpecial;
-
FOUNDATION_EXPORT NSString * const NSFileTypeUnknown;
-
FOUNDATION_EXPORT NSString * const NSFileSize;
-
FOUNDATION_EXPORT NSString * const NSFileModificationDate;
-
FOUNDATION_EXPORT NSString * const NSFileReferenceCount;
-
FOUNDATION_EXPORT NSString * const NSFileDeviceIdentifier;
-
FOUNDATION_EXPORT NSString * const NSFileOwnerAccountName;
-
FOUNDATION_EXPORT NSString * const NSFileGroupOwnerAccountName;
-
FOUNDATION_EXPORT NSString * const NSFilePosixPermissions;
-
FOUNDATION_EXPORT NSString * const NSFileSystemNumber;
-
FOUNDATION_EXPORT NSString * const NSFileSystemFileNumber;
-
FOUNDATION_EXPORT NSString * const NSFileExtensionHidden;
-
FOUNDATION_EXPORT NSString * const NSFileHFSCreatorCode;
-
FOUNDATION_EXPORT NSString * const NSFileHFSTypeCode;
-
FOUNDATION_EXPORT NSString * const NSFileImmutable;
-
FOUNDATION_EXPORT NSString * const NSFileAppendOnly;
-
FOUNDATION_EXPORT NSString * const NSFileCreationDate;
-
FOUNDATION_EXPORT NSString * const NSFileOwnerAccountID;
-
FOUNDATION_EXPORT NSString * const NSFileGroupOwnerAccountID;
-
FOUNDATION_EXPORT NSString * const NSFileBusy;
-
FOUNDATION_EXPORT NSString * const NSFileProtectionKey NS_AVAILABLE_IOS(4_0);
-
FOUNDATION_EXPORT NSString * const NSFileProtectionNone NS_AVAILABLE_IOS(4_0);
-
FOUNDATION_EXPORT NSString * const NSFileProtectionComplete NS_AVAILABLE_IOS(4_0);
-
FOUNDATION_EXPORT NSString * const NSFileProtectionCompleteUnlessOpen NS_AVAILABLE_IOS(5_0);
-
FOUNDATION_EXPORT NSString * const NSFileProtectionCompleteUntilFirstUserAuthentication NS_AVAILABLE_IOS(5_0);
-
复制代码
-
+ (id)attributeOfItemAtPath:(NSString *)path forKey:(NSString *)key error:(NSError *__autoreleasing *)error {
-
return [[self attributesOfItemAtPath:path error:error] objectForKey:key];
-
}
-
复制代码
获取文件属性集合:
-
+ (NSDictionary *)attributesOfItemAtPath:(NSString *)path error:(NSError *__autoreleasing *)error {
-
return [[NSFileManager defaultManager] attributesOfItemAtPath:path error:error];
-
}
-
复制代码