如何将用户选择的图像信息记录到iPhone中的日志文件中 [英] how to log image info selected by the user to the log file in iPhone

问题描述

我正在开发iPhone应用程序，我需要将有关用户选择的图像的信息记录到外部日志文件中.在iPhone中如何实现?

I am developing an iPhone application and i need to log the information about the images selected by the user to an external log file. How can this be achieved in iPhone?

我使用Objective c来开发应用程序.我找不到用户选择的图像，并获取该信息并将其写入日志文件.

I use Objective c for developing the application. I am not able to find out , which image the user has selected and get that information and write to the log file.

推荐答案

您可以使用

You can use NSFileHandle to write to a file.

NSFileHandle* fh = [NSFileHandle fileHandleForWritingAtPath:@"path/to/logfile"];
[fh seekToEndOfFile];
[fh writeData:[@"This is written" dataUsingEncoding:NSUTF8StringEncoding]];
[fh closeFile];

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