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iOS Build a Simple iPhone App (iOS7) Refactoring into a Model Creating a Custom Class

Posted by Julio Pech Constantino
Julio Pech Constantino
1,064 Points

Am i wrong? quiz

it asks you to set the quote to 3 quotes only if _quotes is 'nil', i don't understand why this is wrong...

import "Quote.h"

@implementation Quote

  • (NSString *) randomQuote {

    return @"Some Quote"; }

  • (NSArray *) quotes{ if (_quotes = nil){ _quotes = [[NSArray alloc] initWithObjects: @"quote 1", @"quote 2",@"quote 3", nil]; } return _quotes; }

@end

1 Answer

Robert Bojor
PLUS
Robert Bojor
Courses Plus Student 29,439 Points
Robert Bojor
Robert Bojor
Courses Plus Student 29,439 Points

First you need to add the @property in the header file:

@property (strong, nonatomic) NSArray *quotes;

Next you need to move to the implementation file and create the quotes method that returns the array...

- (NSArray *)quotes {
    if (_quotes == nil) {
    _quotes = [[NSArray alloc] initWithObjects:@"Quote 1", @"Quote 2", @"Quote 3", nil];
  }
  return _quotes;
}

and last, change the randomQuote in the implementation file to return one of the quotes randomly using arc4random_uniform() and passing it [_quotes count] as a max rand.

- (NSString *) randomQuote {
    return [_quotes objectAtIndex:arc4random_uniform([_quotes count])];
}