本文介绍了writeToFile在OSX中,追加到文件?的处理方法,对大家解决问题具有一定的参考价值,需要的朋友们下面随着小编来一起学习吧!
问题描述
我需要不时地写一些数据到一个文件,附加到它。
I need to write some data from time to time to a file, appending to it.
现在我有:
BOOL ok = [[NSString stringWithFormat:@"%f",raw] writeToFile:path atomically:YES encoding:NSUnicodeStringEncoding error:&error];
如何在文件末尾追加 raw
How could I append to the end of the file the new contents of raw
?
推荐答案
一种方法是使用fileHandleForWritingAtPath:方法获取NSFileHandle,将NSString转换为NSData然后调用writeData:在你的NSFileHandle上移动文件指针到文件的结尾。
One method would be to obtain a NSFileHandle using fileHandleForWritingAtPath: method, converting your NSString to NSData and then calling writeData: on your NSFileHandle after moving the file pointer to the end of the file.
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