Noob need help on NSFileManager

Discussion in 'Mac Programming' started by freeme007, Mar 25, 2011.

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  1. freeme007, Mar 25, 2011

    freeme007 macrumors regular

    Joined:
    Sep 21, 2008
    #1
    Hi

    I'm trying to learn how NSFileManger works and I want to test out some methods with files that i have created. Let say the file name is called "testFile". Now the question is where do i put the file, in which folder? I tried the fileExistsAtPath method and it keeps giving me the file does not exist message. By the way, im using Xcode 4

    Thank you for your precious time.
     
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  2. chown33, Mar 25, 2011

    chown33 macrumors 604

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    #2
    Post the code that doesn't work.

    1. Describe what you expected to happen.
    2. Describe what actually happened. (Include any error messages)
     
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  3. gnasher729, Mar 25, 2011

    gnasher729 macrumors P6

    gnasher729

    Joined:
    Nov 25, 2005
    #3
    Hint: To do anything with a file, most operating system functions will want the complete path. That might be something like "/Users/freeme007/testFile" or "/Users/freeme007/Documents/testFile".

    I'd have a look at the methods NSHomeDirectory and stringByAppendingPathComponent. They might come handy. And it would be very, very useful if you can figure out how to find their documentation.
     
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  4. chown33, Mar 25, 2011

    chown33 macrumors 604

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    #4
    And for the times a complete path isn't needed, something called the working directory is used:
    http://en.wikipedia.org/wiki/Working_directory

    So how would you discover what the path of the program's current working directory is? Hint: NSFileManager has a method for it.

    Next, how would you tell Xcode to use a specific working directory when running the program? Hint: Xcode has a Help menu with search capabilities. Try searching for working directory.
     
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  5. freeme007, Mar 25, 2011

    freeme007 thread starter macrumors regular

    Joined:
    Sep 21, 2008
    #5
    Thanks for all the help guys! I was looking for the directory folder where I can put the file so that when xcode runs my program it can detect that file existed.

    I found a code where it will tell me the directory :
    Code:
    system ("pwd; ls -l");
    Now when i run
    Code:
    
if([fm fileExistsAtPath:fileName] == NO){
        NSLog(@"File Does Not Exist!");
        return 1;
    }else{ NSLog(@"File Exists!");}
    it gives me the message of File Exists
     
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