读取和写入图像到SQLite DB的iPhone使用 [英] Reading and writing images to an SQLite DB for iPhone use

问题描述

我设置了一个SQLite DB，目前正在读取和写入 NSString 。我也想在数据库中存储一个图像，以后再调用它。我已经读了一些使用 NSData 和编码的图像，但我不完全确定什么语法是我想做的。任何代码片段或示例将非常感谢。

I've set up a SQLite DB that currently reads and writes NSStrings perfectly. I also want to store an image in the database and recall it later. I've read up a bit on using NSData and encoding the image, but I'm not entirely sure what the syntax is for what I want to do. Any code snippets or examples would be greatly appreciated.

我的当前进程如下：
UIImagePickerController - >用户从照片中选择图片 - > chosenImage设置为 UIImageView - > 的实例现在我要拍摄此图片并将其存储在DB中

My current process goes like this: UIImagePickerController -> User Chooses Image from Photos -> chosenImage is set to instance of UIImageView -> Now I want to take this image and store it in the DB

我应该提到这个调用最终会被替换为对远程服务器的调用。

I should mention this call will eventually be replaced with a call to a remote server. Not sure if this makes a difference as far as performance goes.

推荐答案

一个选项（通常在SQL中工作时更可取）将图像写入系统上的文件，并将路径（或某种其他类型的标识符）存储在数据库中。

One option (and generally preferred when working in SQL) is to write the image to a file on the system and store the path (or some other kind of identifier) in the database.

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