对文件的操作

// 是否存在文件
+ (BOOL)FileExistAtPath:(NSString*)_filePath
{
    NSFileManager * fileManager = [NSFileManager defaultManager];
    if ( [fileManager fileExistsAtPath:_filePath]) {
        return  YES;
    }
    return NO;
}

+ (BOOL)DeleteFileAtPath:(NSString*)_filePath{
    NSFileManager * fileManager = [NSFileManager defaultManager];
    if ( [fileManager removeItemAtPath:_filePath error:nil]) {
        return  YES;
    }
    return NO;
}

// 创建文件夹
+(BOOL)CreateDictionary:(NSString*)path
{
    NSFileManager * fileManager = [NSFileManager defaultManager];
    if ([fileManager createDirectoryAtPath:path withIntermediateDirectories:YES attributes:nil error:nil])
    {
        return  YES;
    }
    return  NO;
}

// 计算文件夹下文件的总大小
+ (long)fileSizeForDir:(NSString*)path
{
    long int size  = 0;
    NSFileManager *fileManager = [[NSFileManager alloc] init];
    
    NSArray* array = [fileManager contentsOfDirectoryAtPath:path error:nil];
    
    for(int i = 0; i<[array count]; i++) {
        if ([[array objectAtIndex:i] isEqualToString:@".DS_Store"]) {
            continue;
        }
        NSString *fullPath = [path stringByAppendingPathComponent:[array objectAtIndex:i]];
        
        BOOL isDir;
        
        if ( !([fileManager fileExistsAtPath:fullPath isDirectory:&isDir] && isDir) ) {
            
            NSDictionary *fileAttributeDic=[fileManager attributesOfItemAtPath:fullPath error:nil];
            size+= fileAttributeDic.fileSize;
            
        } else {
            [self fileSizeForDir:fullPath];
        }
    }
    return size;
    
}

+ (BOOL)DeleteDictionary:(NSString*)path
{
    NSFileManager * fileManager = [NSFileManager defaultManager];
    if ([fileManager removeItemAtPath:path error:nil])
    {
        return  YES;
    }
    return  NO;
}
// 移动文件
+ (BOOL)MoveFileAtPath:(NSString*)path toPath:(NSString*)mPath
{
    NSFileManager * fileManager = [NSFileManager defaultManager];
    if ([fileManager moveItemAtPath:path toPath:mPath error:nil]) {
        return  YES;
    }
    return  NO;
}