登录文本文件iPhone [英] Logging in a text file iPhone

问题描述

我有一个分数系统，我想将所有分数记录在一个由换行符分隔的文本文件中.这是我当前的保存代码:

I have a score system and I would like to log all scores in a text file separated by line breaks. Here is my current save code:

NSData *dataToWrite = [[NSString stringWithFormat:@"String to write ID:%i \n",random] dataUsingEncoding:NSUTF8StringEncoding];

 NSString *docsDirectory = [NSSearchPathForDirectoriesInDomains(NSDocumentDirectory, NSUserDomainMask, YES) objectAtIndex:0];
 NSString *path = [docsDirectory stringByAppendingPathComponent:@"text.txt"];

 // Write the file
 [dataToWrite writeToFile:path atomically:YES];

在检索此数据时，我只看到最新的保存.我该如何将其保存在列表中?

When retrieving this data, I only see the latest save. How do I make it so it saves all in a list?

谢谢.

推荐答案

[dataToWrite writeToFile:path atomically:YES];覆盖该位置的文件，用dataToWrite的内容替换那里的文件.

[dataToWrite writeToFile:path atomically:YES]; overwrites the file at that location, replacing whatever is there with the contents of dataToWrite.

您可能会使用NSFileHandle的fileHandleForWritingAtPath:，然后调用seekToEndOfFile附加到所述文件.

You can likely use NSFileHandle's fileHandleForWritingAtPath: and then call seekToEndOfFile to append to said file.

你有例子吗?

Do you have an example?

尝试类似的东西:

NSFileHandle *f = [NSFileHandle fileHandleForWritingAtPath: p];
[f seekToEndOfFile];
[f writeData: d];
[f close];

全部键入SO；编译器/运行时可能与我对正确性的看法有所不同.

All typed into SO; the compiler/runtime might differ with my opinions of correctness.

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