iOS 文件操作相关

1.拿到mainBundle下Photos文件夹的路径

NSString *photosDirectory = [[[NSBundle mainBundle] resourcePath] stringByAppendingPathComponent:@"Photos"];

2.遍历文件夹Photos

NSArray * photosArray = [[NSFileManager defaultManager] contentsOfDirectoryAtPath:photosDirectory error:nil];

如果Photos里有文件1.png，2.png，3.png . photosArray数组将会是 @[@"1.png", @"2.png", @"3.png"]

3.获得文件的完整路径

NSString *photoName = photosArray[0];

NSString *photoFilePath = [photosDirectory stringByAppendingPathComponent:photoName];

4.获得不带类型后缀的文件名

NSString *photoNameWithoutSuffix= [photoName stringByDeletingPathExtension];