how to check values? - ios

Question

In my quiz I have several answers. Correct answers are in plist.
here it is
<array>
<dict>
<key>QuestionTitle</key>
<string>Веки являются</string>
<key>Answers</key>
<array>
<string>частью глазного яблока</string>
<string>защитным аппаратом органа зрения</string>
<string>и тем, и другим</string>
<string>ни тем, ни другим</string>
</array>
<key>CorrectAnswer</key>
<array>
<integer>0</integer>
<integer>1</integer>
</array>
</dict>
Now I can't guess how to make check for answers that User answered
I may create variables 0,1,2,3 for A,B,C,D answers but how I should compare it with CorrectAnswer Array
There is my m. file code
NSString* path = [[NSBundle mainBundle] pathForResource:#"Questions2" ofType:#"plist"];
NSMutableArray *questionsDict = [[NSMutableArray alloc] initWithContentsOfFile:path];
NSUInteger count = [questionsDict count];
for (NSUInteger i = 0; i < count; ++i)
{
int nElements = count - i;
int n = (arc4random()% nElements) + i;
[questionsDict exchangeObjectAtIndex:i withObjectAtIndex:n];
}
self.questions = [questionsDict copy];
currentQuestion = 0;
NSDictionary* nextQuestion =
[self.questions objectAtIndex: currentQuestion];//[self.questions objectForKey:
[NSString stringWithFormat:#"%d", currentQuestion]];
NSMutableArray *array = [nextQuestion[#"Answers"] mutableCopy];
self.labelA.text = [array objectAtIndex:0];
self.labelB.text = [array objectAtIndex:1];
self.labelC.text = [array objectAtIndex:2];
self.labelD.text = [array objectAtIndex:3];
self.labelQuestion.text = [nextQuestion objectForKey:#"QuestionTitle"];
//Button D (A,B,C the same)
- (IBAction)fourButton:(id)sender
{
if (chekColorD == 0)
{
chekColorD++;
[buttonD setTitleColor:[UIColor yellowColor] forState:UIControlStateNormal];
//self.stringD = #"D";
}
else
{
chekColorD = 0;
[buttonD setTitleColor:[UIColor blackColor] forState:UIControlStateNormal];
// self.stringD = nil;
}
}
//NExt question button
- (IBAction)nextQuestion:(id)sender
{
// Тут делаешь сравнение правильных ответов
chekColorA = 0; chekColorB = 0; chekColorC = 0; chekColorD = 0;
[buttonA setTitleColor:[UIColor blackColor] forState:UIControlStateNormal];
[buttonB setTitleColor:[UIColor blackColor] forState:UIControlStateNormal];
[buttonC setTitleColor:[UIColor blackColor] forState:UIControlStateNormal];
[buttonD setTitleColor:[UIColor blackColor] forState:UIControlStateNormal];
self.labelScore.text = [NSString stringWithFormat:#"%d", numCorrect];
if ([self.highScore integerForKey:#"HighScore"]<numCorrect){
[self.highScore setInteger:numCorrect forKey:#"HighScore"];
[self.highScore synchronize];
}
currentQuestion++;
if (currentQuestion <= [self.questions count]){
self.labelScore.text = [NSString stringWithFormat:#"%d", numCorrect];
self.labelHighestScore.text = [NSString stringWithFormat:#"%d",
[self.highScore integerForKey:#"HighScore"]];
NSDictionary* nextQuestion = [self.questions objectAtIndex: currentQuestion];
NSMutableArray *array = [nextQuestion[#"Answers"] mutableCopy];
self.labelA.text = [array objectAtIndex:0];
self.labelB.text = [array objectAtIndex:1];
self.labelC.text = [array objectAtIndex:2];
self.labelD.text = [array objectAtIndex:3];
self.labelQuestion.text = [nextQuestion objectForKey:#"QuestionTitle"];
//NSLog(#"%d количество вопросов", countQuestion);
}
else{
currentQuestion --;
}
}

Answer 1

You can compare two string like this:
if ([#"string1" isEqualToString:#"string2"]) {
// YES it s the same
}
else{
// no it s not the same
}
for example [labelA.text isEqualToString:correctAnswerString]. I recomend you to make buttons for answers: button1: firstAnswer, button2: secondAnswer and so on. When user tap on it, you can catch the sender which will be a UIButton, and if you set the button's title for the answer, you can compare the (UIButton*)sender.titleLabel.text isEqualToString:correctAnswer
// the question is: Lion is a...
UIButton* button1 = [[UIButton alloc] initWithFrame:CGRectMake(x, y, width, height)];
UIButton* button2 = [[UIButton alloc] initWithFrame:CGRectMake(x, y, width, height)];
UIButton* button3 = [[UIButton alloc] initWithFrame:CGRectMake(x, y, width, height)];
UIButton* button4 = [[UIButton alloc] initWithFrame:CGRectMake(x, y, width, height)];
[button1 setTitle:#"animal" forState:UIControlStateNormal];
[button2 setTitle:#"car" forState:UIControlStateNormal];
[button3 setTitle:#"tv" forState:UIControlStateNormal];
[button4 setTitle:#"radio station" forState:UIControlStateNormal];
[button1 addTarget:self action:#selector(checkAnswer:) forControlEvents:UIControlEventTouchUpInside];
[button2 addTarget:self action:#selector(checkAnswer:) forControlEvents:UIControlEventTouchUpInside];
[button3 addTarget:self action:#selector(checkAnswer:) forControlEvents:UIControlEventTouchUpInside];
[button4 addTarget:self action:#selector(checkAnswer:) forControlEvents:UIControlEventTouchUpInside];
-(bool) checkAnswer:(id)sender{
NSString* correctString = #"animal";
UIButton* tappedButton = (UIButton*)sender;
if ([tappedButton.titleLabel.text isEqualToString:correctString]) {
return YES;
}
return NO;
}