Question

I have put together a simple quote generator, storing the quotes in an array. Following are the quote view controller interface and implementation files:

ViewController.h

#import <UIKit/UIKit.h>

@interface ViewController : UIViewController

@property(nonatomic, retain)NSArray *myQuotes;
@property(nonatomic, retain)NSMutableArray *movieQuotes;
@property (nonatomic, retain) IBOutlet UITextView *quote_text;

-(IBAction)quote_btn_touch:(id)sender;

@end

ViewController.m

#import "ViewController.h"

@interface ViewController ()

@end

@implementation ViewController

@synthesize myQuotes;
@synthesize movieQuotes;
@synthesize quote_text;

- (void)viewDidLoad
{
    [super viewDidLoad];
    // Do any additional setup after loading the view, typically from a nib.
  self.myQuotes = [NSArray arrayWithObjects:
                   @"Live and let live", 
                   @"Don't cry over spilt milk", 
                   @"Always look on the bright side of life", 
                   @"Nobody's perfect", 
                   @"Can't see the woods for the trees",
                   @"Better to have loved and lost than not loved at all",
                   @"The early bird catches the worm",
                   @"As slow as a wet week",
                   nil];

  quote_text = nil;
}

- (void)viewDidUnload
{
    [super viewDidUnload];
    // Release any retained subviews of the main view.
}

- (BOOL)shouldAutorotateToInterfaceOrientation:(UIInterfaceOrientation)interfaceOrientation
{
  return (interfaceOrientation != UIInterfaceOrientationPortraitUpsideDown);
}

-(IBAction)quote_btn_touch:(id)sender {
  // 1 - Get number of rows in array
  int array_tot = [self.myQuotes count];
  // 2 - Get random index
  int index = (arc4random() % array_tot);
  // 3 - Get the quote string for the index 
  NSString *my_quote = [self.myQuotes objectAtIndex:index];
  // 4 - Display the quote in the text view
  self.quote_text.text = [NSString stringWithFormat:@"Quote:\n\n%@",  my_quote];      
}

@end

In the xib file, I connected the text view and button to the File’s Owner, using quote_text and quote_btn_touch respectively.

Trouble is that when I click on the button, nothing happens. Any idea what I missed?

Thanks in advance!

Answer 1

your setting quote text to nil on viewDidLoad. If you get rid of that your code should work as long as you correctly bound the button to the viewcontroller function

quote_text = nil;