所有方法

都很简单，大概记录一下，写文件并没有是追加的方式而是简单的覆盖

//创建文件夹

- (BOOL)creatDir:(NSString*)newDirName at:(NSString*)dirName ;

//创建文件

- (BOOL)creatFile:(NSString*)fileName at:(NSString*)dirName ;

//写文件-字符串

- (BOOL)writeString:(NSString*)string inFilePath:(NSString*)filePath;

//写文件-字典

- (BOOL)writeDict:(NSDictionary*)dict inFilePath:(NSString*)filePath ;

//写文件-数组

- (BOOL)writeArray:(NSArray*)array inFilePath:(NSString*)filePath ;

//读文件

- (NSString*)readFileAt:(NSString*)filePath;

//获取某个目录下所有文件

- (NSArray*)getAllFileAtDir:(NSString*)dirPath ;

//判断文件是否存在

- (BOOL)fileIsExistAtPath:(NSString*)filePath ;

//计算某个文件大小

- (unsigned long long)computerFileSizeAtPath:(NSString*)filePath;

//计算整个文件夹中所有文件大小

- (unsigned long long)computerDirSizeAtPath:(NSString*)dirPath;

//删除文件

- (BOOL)removeFileAtPath:(NSString*)filePath;

//移动文件

- (BOOL)moveFile:(NSString*)fileName fromPath:(NSString*)fromPath toPath:(NSString*)toPath;

具体实现

初始化一下NSFileManager 并获取根路径

主要是加了一些判断，代码不是很精简 不要笑我。

- (instancetype)init {

    self = [super init];

    if (self) {

        self.homePath = NSHomeDirectory();

        self.manager = [NSFileManager defaultManager];

        NSLog(@"根路径地址：%@",self.homePath);

    }

    return self;

}

//创建文件夹

- (BOOL)creatDir:(NSString*)newDirName at:(NSString*)dirName {

    NSString *path = [self.homePath stringByAppendingString:dirName];

    NSString *filePath = [path stringByAppendingPathComponent:newDirName];

    if ([self.manager fileExistsAtPath:filePath]) {

        NSLog( @"创建失败，目录已存在");

    }else {

        BOOL isCreate = [self.manager createDirectoryAtPath:filePath withIntermediateDirectories:NO attributes:nil error:nil];

        if (isCreate) {

            NSLog( @"创建成功");

            return YES;

        } else {

            NSLog( @"创建失败，请检查路径");

            return NO;

        }

    }

    return NO;

}

//创建文件

- (BOOL)creatFile:(NSString*)fileName at:(NSString*)dirName {

    //目录位置

    NSString *dirPath = [self.homePath stringByAppendingString:dirName];

    //文件位置

    NSString *filePath = [dirPath stringByAppendingPathComponent:fileName];

    BOOL isDir = NO;

    BOOL isFileExist = [self.manager fileExistsAtPath:dirPath isDirectory:&isDir];

    //目录是否存在

    if (!(isFileExist && isDir)) {

        NSLog(@"目录不存在,请先创建目录");

        return NO;

    }

    //文件是否存在

    if (![self.manager fileExistsAtPath:filePath]) {

        BOOL isCreate = [self.manager createFileAtPath:filePath contents:nil attributes:nil];

        if (isCreate) {

            NSLog(@"创建成功");

            return YES;

        } else {

            NSLog(@"创建失败");

            return NO;

        }

    }

    else {

        NSLog(@"创建失败，文件已存在");

        return NO;

    }

    return NO;

}

//写文件-字符串

- (BOOL)writeString:(NSString*)string inFilePath:(NSString*)filePath{

    NSString *path = [self.homePath stringByAppendingString:filePath];

    BOOL isFileExist = [self.manager fileExistsAtPath:path];

    if (isFileExist) {

        BOOL isWrite = [string writeToFile:path atomically:YES encoding:NSUTF8StringEncoding error:nil];

        if (isWrite) {

            NSLog(@"写入成功");

            return YES;

        } else {

            NSLog( @"写入失败");

            return NO;

        }

    }else{

        NSLog(@"文件不存在,请先创建文件");

        return NO;

    }

    return NO;

}

//写文件-字典

- (BOOL)writeDict:(NSDictionary*)dict inFilePath:(NSString*)filePath {

    NSString *path = [self.homePath stringByAppendingString:filePath];

    BOOL isFileExist = [self.manager fileExistsAtPath:path];

    if (isFileExist) {

        BOOL isWrite = [dict writeToFile:path atomically:YES];

        if (isWrite) {

            NSLog(@"写入成功");

            return YES;

        } else {

            NSLog(@"写入失败");

            return NO;

        }

    }else{

        NSLog(@"文件不存在,请先创建文件");

        return NO;

    }

    return NO;

}

//写文件-数组

- (BOOL)writeArray:(NSArray*)array inFilePath:(NSString*)filePath {

    NSString *path = [self.homePath stringByAppendingString:filePath];

    BOOL isFileExist = [self.manager fileExistsAtPath:path];

    if (isFileExist) {

        BOOL isWrite = [array writeToFile:path atomically:YES];

        if (isWrite) {

            NSLog(@"写入成功");

            return YES;

        } else {

            NSLog(@"写入失败");

            return NO;

        }

    }else{

        NSLog(@"文件不存在,请先创建文件");

        return NO;

    }

    return NO;

}

//读文件

- (NSString*)readFileAt:(NSString*)filePath{

    NSString *path = [self.homePath stringByAppendingString:filePath];

    NSData *data = [self.manager contentsAtPath:path];

    NSString *result = [[NSString alloc] initWithData:data encoding:NSUTF8StringEncoding];

    return result;

}

//获取某个目录下所有文件

- (NSArray*)getAllFileAtDir:(NSString*)dirPath {

    NSString *path = [self.homePath stringByAppendingString:dirPath];

    NSArray *dirArray = [self.manager contentsOfDirectoryAtPath:path error:nil];

    return dirArray;

}

//判断文件是否存在

- (BOOL)fileIsExistAtPath:(NSString*)filePath {

    NSString *path = [self.homePath stringByAppendingString:filePath];

    BOOL isFileExist = [self.manager fileExistsAtPath:path];

    if (isFileExist) {

        NSLog(@"文件存在");

        return YES;

    }  else {

        NSLog(@"文件不存在");

        return NO;

    }

    return NO;

}

//计算某个文件大小 单位是字节

- (unsigned long long)computerFileSizeAtPath:(NSString*)filePath {

    NSString *path = [self.homePath stringByAppendingString:filePath];

    BOOL isDir;

    BOOL isFile = [self.manager fileExistsAtPath:path isDirectory:&isDir];

    if (!isDir) {

        if (!isFile) {

            NSLog(@"文件不存在");

            return 0;

        }else {

            unsigned long long fileSize = [self.manager attributesOfItemAtPath:path error:nil].fileSize;

            return fileSize;

        }

    }  else {

        NSLog( @"该文件是一个目录");

        return 0;

    }

    return 0;

}

//计算整个文件夹中所有文件大小

- (unsigned long long)computerDirSizeAtPath:(NSString*)dirPath {

    NSString *path = [self.homePath stringByAppendingString:dirPath];

    BOOL isExist = [self.manager fileExistsAtPath:path];

    if (isExist) {

        NSEnumerator *childFilesEnumerator = [[self.manager subpathsAtPath:path] objectEnumerator];

        NSString* fileName;

        long long folderSize = 0;

        while ((fileName = [childFilesEnumerator nextObject]) != nil){

            NSString* fileAbsolutePath = [path stringByAppendingPathComponent:fileName];

            folderSize += [self.manager attributesOfItemAtPath:fileAbsolutePath error:nil].fileSize;

        }

        return folderSize;

    } else {

        NSLog(@"目录不存在");

        return 0;

    }

    return 0;

}

//删除文件

- (BOOL)removeFileAtPath:(NSString*)filePath {

    NSString *path = [self.homePath stringByAppendingString:filePath];

    if ([self.manager fileExistsAtPath:path]) {

        BOOL isRemove = [self.manager removeItemAtPath:path error:nil];

        if (!isRemove) {

            NSLog(@"移除失败");

            return NO;

        } else {

            NSLog(@"移除成功");

            return YES;

        }

    } else {

        NSLog(@"文件不存在");

        return NO;

    }

    return NO;

}

//移动文件

- (BOOL)moveFile:(NSString*)fileName fromPath:(NSString*)fromPath toPath:(NSString*)toPath {

    NSString *fPath = [self.homePath stringByAppendingString:fromPath];

    NSString *src = [fPath stringByAppendingPathComponent:fileName];

    NSString *tPath = [self.homePath stringByAppendingString:toPath];

    NSString *des = [tPath stringByAppendingPathComponent:fileName];

    if (![self.manager fileExistsAtPath:src]) {

        NSLog(@"文件不存在");

        return NO;

    }else {

        if (![self.manager fileExistsAtPath:tPath]) {

            NSLog(@"目标路径不存在");

            return NO;

        } else {

            BOOL move = [self.manager moveItemAtPath:src toPath:des error:nil];

            if (move) {

                NSLog( @"移动成功");

                return YES;

            } else {

                NSLog(@"移动失败");

                return NO;

            }

        }

    }

    return NO;

}