Question

i have quiz app for the iPhone, i’m able to load random question from plist file and i want to ask about 20 questions; in my plist file i have 20 more, but i don’t want that in one quiz session one question is repeated.
this is my plist file `

<key>Domanda1</key>

    <dict>

    <key>immagine</key>

    <string>hpv</string>

    <key>Titolo</key>

    <string>Domanda numero 1</string>

    <key>Risposta1</key>

    <string>Risposta primaD1</string>

    <key>Risposta2</key>

    <string>Risposta seconda</string>

    <key>Risposta3</key>

    <string>Risposta terza</string>

    <key>Risposta4</key>

    <string>Risposta quarta</string>

    <key>Soluzione</key>

    <integer>1</integer>

</dict>

<key>Domanda2</key>

…….
`
my view controller.m

-(void)creaDomanda {

//scelta casuale tra le varie disponibili

int randomValue =  (arc4random() % 20) + 1;

NSString *stringa = [NSString stringWithFormat:@"Domanda%i", randomValue];

// Apre il dictionary

dictionary = [plistData objectForKey:stringa]; 

// e stampa a schermo la domanda

label1.text = [dictionary valueForKey:@"Titolo"];

label1.textColor = [UIColor redColor];

………

Any ideas?
thank’s in advance

Answer 1

Create a mutable array and copy your questions into it in numerical order. Select questions from the array using a random value. When you ask a question, remove it from the array. To generate a new random value, use the number of items still in the array instead of “20”.