pasting content to a file - NSFileManager

Question

I want to add contents to file2(file2 already contains content and should not be replaced) from a file1. copyItemAtPath throws error as file2 already exists.Is there a way to just add contents to a file instead of replacing existing contents.

 if(![[NSFileManager defaultManager] fileExistsAtPath:logPath2])
    [[NSFileManager defaultManager] createFileAtPath:logPath2 contents:[NSData data] attributes:nil];


if ([filemgr copyItemAtPath: logPath1 toPath:
     logPath2 error: &err])
            NSLog (@"Temp Move successful");
else
    NSLog (@"Temp Move failed  %@",err);

Answer 1

使用NSFileManager不可能做到这一点，但是您可以使用-[NSOutputStream outputStreamToFileAtPath:append:] （ 文档 ）来实现此目的。