-(void)copyFileFromPath:(NSString*)sourcePath toPath:(NSString*)toPath{

    NSFileManager *fileManager = [[NSFileManager alloc] init];

    NSArray* array = [fileManagercontentsOfDirectoryAtPath:sourcePatherror:nil];

    for(inti =0; i<[arraycount]; i++)

    {

        NSString *fullPath = [sourcePath stringByAppendingPathComponent:[array objectAtIndex:i]];

        NSString *fullToPath = [toPath stringByAppendingPathComponent:[array objectAtIndex:i]];

        NSLog(@"%@",fullPath);

        NSLog(@"%@",fullToPath);

        //判断是不是文件夹

        BOOLisFolder =NO;

        //判断是不是存在路径 并且是不是文件夹

        BOOLisExist = [fileManagerfileExistsAtPath:fullPathisDirectory:&isFolder];

        if(isExist){

            NSError*err =nil;

            [[NSFileManager defaultManager] copyItemAtPath:fullPath toPath:fullToPath error:&err];

            NSLog(@"%@",err);

            if(isFolder){

                [selfcopyFileFromPath:fullPathtoPath:fullToPath];

            }

        }

    }

}