ここで別のサブビュー (introPadTutorial) にラベル (headerLabel) を追加しようとしていますが、画面に表示されません。どこで間違いを犯しているのか教えてください。
//Header file
@property (nonatomic, retain) UIView *introPadTutorial;
//Implementation file
@synthesize introPadTutorial;
UIView *v = [_appDelegate getCurrentView];
CGRect tutorialFrame = [self getTableViewFrame];
introPadTutorial = [[UIView alloc] initWithFrame:CGRectMake(v.frame.size.width, 80, -tutorialFrame.size.width, v.frame.size.height)];
[introPadTutorial setBackgroundColor:[UIColor uberLightGray]];
[introPadTutorial setUserInteractionEnabled:YES];
UILabel *headerLabel = [[UILabel alloc] initWithFrame:CGRectMake(10, 10, 180, 180)];
[headerLabel setText:@"test test test"];
[headerLabel setBackgroundColor:[UIColor greenColor]];
[headerLabel setFont:[UIFont boldSystemFontOfSize:16.0f]];
[headerLabel setTextColor:[UIColor redColor]];
[headerLabel setShadowColor:[UIColor whiteColor]];
[headerLabel setShadowOffset:CGSizeMake(0, 1)];
[self.introPadTutorial addSubview:headerLabel];
[headerLabel release];
[v addSubview:introPadTutorial];
[introPadTutorial release];