Question

Possible Duplicate:
How to append string in local resource txt file for iOS sdk

My code goes like this:

NSArray *paths = NSSearchPathForDirectoriesInDomains(NSDocumentDirectory, NSUserDomainMask, YES);
NSString *docDir = [paths objectAtIndex: 0];

docFile_V1 = [docDir stringByAppendingPathComponent:LOG_FILE_V1];
if ([file fileExistsAtPath: docFile_V1] == YES)
{     
    if(![formatedlogStr writeToFile:docFile_V1  atomically:YES encoding:NSUTF8StringEncoding error:&error])
    {
        NSLog(@"Error: %@", [error userInfo]);
    }
}

This is my code for writing into the file, but unfortunately it overwrites all the previous contents of the file. I want to write a string without overwriting the previous one.

Can anybody suggest the best way to write or append to the file by example?

Answer 1

Firstly, you should read the contents of the file in a NSMutableArray, then append your data to your array, and write it to the file again.