iPhone開発初心者です。iPhone シミュレーターを実行すると背景画像が範囲外になる Crystal Ball アプリのコードを書いています。私は実用的に物事をやろうとしています。以下はコードです
「ViewController.h」をインポート
@interface ViewController ()
@end
@implementation ViewController
@synthesize predictionLabel;
@synthesize predictionArray;
- (void)viewDidLoad
{
    [super viewDidLoad];
    
    UIImage *image = [UIImage imageNamed: @"crystal_ball copy@2x.png"];
    UIImageView *imageView =[[UIImageView alloc] initWithImage:image];
    [self. view insertSubview:imageView atIndex:0];
    
    
   self.predictionArray = [[NSArray alloc] initWithObjects:@"It is decideley so",
                                @"good things coming", 
                                @"Good time is here",
                                @"Great profit",
                                @"stay possitive",@"Stay Foccused",@"all is well",nil];
    
    // Do any additional setup after loading the view, typically from a nib.
}
- (void)viewDidUnload
{
    [self setPredictionLabel:nil];
    [self setPredictionLabel:nil];
    [self setPredictionLabel:nil];
    [self setPredictionLabel:nil];
    [super viewDidUnload];
    // Release any retained subviews of the main view.
}
- (BOOL)shouldAutorotateToInterfaceOrientation:(UIInterfaceOrientation)interfaceOrientation
{
    return (interfaceOrientation != UIInterfaceOrientationPortraitUpsideDown);
}
- (IBAction)buttonPressed:(UIButton *)sender {
    
    NSUInteger index = arc4random_uniform(self.predictionArray. count);
    
    self.predictionLabel.text = [self.predictionArray objectAtIndex: index];
}
@end