Hi there!

I'm having a problem when I press the button, The text disappears completely. Can someone give me a hand?

PMViewController.h

import <UIKit/UIKit.h>

@class PMCrystalBall;

@interface PMViewController : UIViewController @property (strong, nonatomic) IBOutlet UILabel *predictionLabel;

@property (strong, nonatomic) PMCrystalBall *crystalBall;

• (IBAction)buttonPressed;

@end

PMViewController.m

import "PMViewController.h"

import "PMCrystalBall.h"

@interface PMViewController ()

@end

@implementation PMViewController

• (void)viewDidLoad { [super viewDidLoad];

  self.crystalBall = [[PMCrystalBall alloc] init]; }

• (void)didReceiveMemoryWarning { [super didReceiveMemoryWarning]; // Dispose of any resources that can be recreated. }

• (IBAction)buttonPressed {

  self.predictionLabel.text = [self.crystalBall randomPrediction];

} @end

PMCrystalBall.h

import <Foundation/Foundation.h>

@interface PMCrystalBall : NSObject { NSArray *_predictions;

}

@property (strong, nonatomic, readonly) NSArray *predictions; @property (strong, nonatomic) NSString *randomPrediction;

-(NSString*) randomPrediction;

@end

PMCrystalBall.m

import "PMCrystalBall.h"

@implementation PMCrystalBall

-(NSArray*) predictions { if (_predictions == nil) { _predictions = [[NSArray alloc] initWithObjects:

                    @"It is certain",
                    @"It is decidedly so",
                    @"All signs say yes",
                    @"The stars are not aligned",
                    @"My reply is no",
                    @"It is doubtful",
                    @"Better not tell you now",
                    @"Concentrate and ask again",
                    @"Unable to answer now", nil];
}
return _predictions;

} -(NSString*) randomPredictiton { int random = arc4random_uniform(self.predictions.count); return [self.predictions objectAtIndex:random]; }

@end

Thanks in advance!