CODEWITHSUNDEEP
iphoneobjective-ciosxcode
Andy
Andy

Reputation: 281

Take whats the user enters in a text field and store it in a text file?

I am trying to make a simple password protected app using a text file to store the password that the user entered. I want to take whats in a text field store it in a file and ultimately compare whats in that file to what the user enters in another text field. here is what I have: 

 //Setting the string to hold the password the user has entered
    NSString *createPassword1 = passwordSet.text;

    //creating a muttable array to store the value of createPassword1
    NSMutableArray *passwordArray = [NSMutableArray array];

    //storing createpassword1 into the first element of the array
    [passwordArray addObject:createPassword1];

    NSLog(@"%@",[passwordArray objectAtIndex:0]);//seeing if it is stored correctly (it is)


    //path for searching for the file
    NSString *path = [NSSearchPathForDirectoriesInDomains(NSDocumentDirectory, NSUserDomainMask, YES) objectAtIndex:0];
    //my filename
    NSString *fileName = @"PasswordFile.txt";

    NSString *fileAndPath = [path stringByAppendingPathComponent:fileName];

    if (![[NSFileManager defaultManager] fileExistsAtPath:fileAndPath]) {
        [[NSFileManager defaultManager] createFileAtPath:fileAndPath contents:nil attributes:nil];
    }

    [[[passwordArray objectAtIndex:0] dataUsingEncoding:NSUTF8StringEncoding] writeToFile:fileAndPath atomically:YES];

Any help will be greatly appreciated thank you.

Upvotes: 0

Views: 95

Answers (1)

Mario
Mario

Reputation: 4520

What you do is too complicated. Why do you use a NSMutableArray ("passwordArray") to store a single password? Why do you convert it to NSData and write this to a file? Just use a string and use its writeToFile method. Alternatively use NSArray's writeToFile method.

Alternatively, and my personal favorite: use NSUSerDefaults à la:

[[NSUserDefaults standardUserDefaults] setValue: myPasswordString forKey:@"appPassword"]];

EDIT in response to some comments: The above only applies if used in a "trivial" app that needs password-protection in a very low-level manner. Anything to protect really sensitive data should be handled differently. The original poster explicitly stated

I want to take whats in a text field store it in a file and ultimately compare whats in that file to what the user enters in another text field.

So one can assume that high-level security is not an issue here.

Upvotes: 1

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