Loading text from .txt file iOS - ios

Question

I've been trying to convert a Quiz app that was based for Mac OS to iOS because I liked the idea of loading all questions from a single .txt file.
I'm still pretty new in the Objective-C language as I've used C# before.
The questions and answers are loaded via this function:
- (void)loadQuestionsAndAnswersArray {
NSString *filePath = [[NSBundle mainBundle] pathForResource:#"Quiz1" ofType:#"txt"];
NSString *textFileString = [NSString stringWithContentsOfFile:filePath encoding:NSStringEncodingConversionAllowLossy error:NULL];
NSArray *seperatedQA = [textFileString componentsSeparatedByString:#"\n\n"];
for (NSString *QA in seperatedQA) {
NSString *questionString = [[[QA componentsSeparatedByString:#"\n"] objectAtIndex:0] stringByReplacingOccurrencesOfString:#"Q:" withString:#""];
NSMutableArray *answers = [[QA componentsSeparatedByString:#"A:"] mutableCopy];
[answers removeObjectAtIndex:0];
int correctAnswerLoc = 0;
for (int i = 0; i < answers.count; i++) {
NSString *answer = [answers objectAtIndex:i];
NSString *editedAnswer = [answer stringByReplacingOccurrencesOfString:#"\n" withString:#""];
editedAnswer = [editedAnswer stringByTrimmingCharactersInSet:
[NSCharacterSet whitespaceAndNewlineCharacterSet]];
[answers removeObjectAtIndex:i];
[answers insertObject:editedAnswer atIndex:i];
answer = editedAnswer;
if ([answer rangeOfString:#"[CORRECT]"].location != NSNotFound) {
correctAnswerLoc = [answers indexOfObject:answer];
NSString *editedAnswer = [answer stringByReplacingOccurrencesOfString:#"[CORRECT]" withString:#""];
[answers removeObjectAtIndex:i];
[answers insertObject:editedAnswer atIndex:i];
}
}
NSLog(#"answers = %#", answers);
NSDictionary *QADictionary = [NSDictionary dictionaryWithObjectsAndKeys:questionString, #"question", answers, #"answers", [NSNumber numberWithInt:correctAnswerLoc], #"correctAnswerLocation", nil];
[questionsAndAnswers addObject:QADictionary];
}
resultsArray = [[NSMutableArray alloc] initWithCapacity:[questionsAndAnswers count]];
}
The app then has a text field for the question and then 3 buttons, one for each answer. And when a new questions appears it changes the text within the text field and the title of the buttons.
This code works like a charm on the Mac App but on the iOS version it's like it can't find the txt file, the buttons etc is left blank.
I've been sitting on this for a week or so about now and that's the reason for this post.
The iOS app is based on this Github Mac app: https://github.com/SquaredTiki/Quizzer
If you want to have a look at how I've tried to convert the app here's a link to that to:
https://www.dropbox.com/s/1jqz9ue97p3v2h1/iTrafikk.zip?dl=0
And of course I'm not asking you to solve the whole issue for me, maybe just push me in the right direction if possible :)

Answer 1

I checked your project. And it seems that you are not calling loadQuestionsAndAnswersArray anywhere in your code. Also you are not initializing the questionsAndAnswers anywhere in the project.
Change your code like:
- (void)viewDidLoad
{
[super viewDidLoad];
[self loadQuestionsAndAnswersArray];
}
- (void)loadQuestionsAndAnswersArray
{
NSString *filePath = [[NSBundle mainBundle] pathForResource:#"Quiz1" ofType:#"txt"];
NSString *textFileString = [NSString stringWithContentsOfFile:filePath encoding:NSStringEncodingConversionAllowLossy error:NULL];
NSArray *seperatedQA = [textFileString componentsSeparatedByString:#"\n\n"];
for (NSString *QA in seperatedQA)
{
NSString *questionString = [[[QA componentsSeparatedByString:#"\n"] objectAtIndex:0] stringByReplacingOccurrencesOfString:#"Q:" withString:#""];
NSMutableArray *answers = [[QA componentsSeparatedByString:#"A:"] mutableCopy];
[answers removeObjectAtIndex:0];
int correctAnswerLoc = 0;
for (int i = 0; i < answers.count; i++)
{
NSString *answer = [answers objectAtIndex:i];
NSString *editedAnswer = [answer stringByReplacingOccurrencesOfString:#"\n" withString:#""];
editedAnswer = [editedAnswer stringByTrimmingCharactersInSet:
[NSCharacterSet whitespaceAndNewlineCharacterSet]];
[answers removeObjectAtIndex:i];
[answers insertObject:editedAnswer atIndex:i];
answer = editedAnswer;
if ([answer rangeOfString:#"[CORRECT]"].location != NSNotFound)
{
correctAnswerLoc = [answers indexOfObject:answer];
NSString *editedAnswer = [answer stringByReplacingOccurrencesOfString:#"[CORRECT]" withString:#""];
[answers removeObjectAtIndex:i];
[answers insertObject:editedAnswer atIndex:i];
}
}
NSLog(#"answers = %#", answers);
NSDictionary *QADictionary = [NSDictionary dictionaryWithObjectsAndKeys:questionString, #"question", answers, #"answers", [NSNumber numberWithInt:correctAnswerLoc], #"correctAnswerLocation", nil];
if (!questionsAndAnswers)
{
questionsAndAnswers = [[NSMutableArray alloc] init];
}
[questionsAndAnswers addObject:QADictionary];
}
resultsArray = [[NSMutableArray alloc] initWithCapacity:[questionsAndAnswers count]];
[self loadQuestionsAndAnswersIntoInterface];
}