从横向到纵向时，我有一个无法替换的小子视图。你可以在这里看到它。
视图的代码如下。
if ((self = [super initWithFrame:frame]))
{
self.autoresizesSubviews = YES;
self.userInteractionEnabled = YES;
self.contentMode = UIViewContentModeRedraw;
self.autoresizingMask = UIViewAutoresizingFlexibleWidth | UIViewAutoresizingFlexibleTopMargin;
self.backgroundColor = [UIColor colorWithRed:(80/255.0) green:(169/255.0) blue:(53/255.0) alpha:0.8f];
//CAGradientLayer *layer = (CAGradientLayer *)self.layer;
//UIColor *liteColor = [UIColor colorWithWhite:0.82f alpha:0.8f];
//UIColor *darkColor = [UIColor colorWithWhite:0.32f alpha:0.8f];
//layer.colors = [NSArray arrayWithObjects:(id)liteColor.CGColor, (id)darkColor.CGColor, nil];
CGRect shadowRect = self.bounds; shadowRect.size.height = 4.0f; shadowRect.origin.y -= shadowRect.size.height;
ReaderPagebarShadow *shadowView = [[ReaderPagebarShadow alloc] initWithFrame:shadowRect];
[self addSubview:shadowView]; // Add the shadow to the view
CGFloat numberY = (0.0f - (PAGE_NUMBER_HEIGHT + PAGE_NUMBER_SPACE));
CGFloat numberX = ((self.bounds.size.width - PAGE_NUMBER_WIDTH) / 2.0f);
CGRect numberRect = CGRectMake(numberX+280, numberY-644, PAGE_NUMBER_WIDTH, PAGE_NUMBER_HEIGHT);
pageNumberView = [[UIView alloc] initWithFrame:numberRect]; // Page numbers view
pageNumberView.autoresizesSubviews = YES;
pageNumberView.userInteractionEnabled = NO;
pageNumberView.autoresizingMask = UIViewAutoresizingFlexibleWidth | UIViewAutoresizingFlexibleHeight | UIViewAutoresizingFlexibleBottomMargin |
UIViewAutoresizingFlexibleLeftMargin | UIViewAutoresizingFlexibleRightMargin |
UIViewAutoresizingFlexibleTopMargin | UIViewAutoresizingFlexibleBottomMargin;
pageNumberView.backgroundColor = [UIColor colorWithWhite:0.0f alpha:0.4f];
pageNumberView.layer.shadowOffset = CGSizeMake(0.0f, 0.0f);
pageNumberView.layer.shadowColor = [UIColor colorWithWhite:0.0f alpha:0.6f].CGColor;
pageNumberView.layer.shadowPath = [UIBezierPath bezierPathWithRect:pageNumberView.bounds].CGPath;
pageNumberView.layer.shadowRadius = 2.0f; pageNumberView.layer.shadowOpacity = 1.0f;
CGRect textRect = CGRectInset(pageNumberView.bounds, 4.0f, 2.0f); // Inset the text a bit
pageNumberLabel = [[UILabel alloc] initWithFrame:textRect]; // Page numbers label
pageNumberLabel.autoresizesSubviews = NO;
pageNumberLabel.autoresizingMask = UIViewAutoresizingNone;
pageNumberLabel.textAlignment = UITextAlignmentCenter;
pageNumberLabel.backgroundColor = [UIColor clearColor];
pageNumberLabel.textColor = [UIColor whiteColor];
pageNumberLabel.font = [UIFont systemFontOfSize:16.0f];
pageNumberLabel.shadowOffset = CGSizeMake(0.0f, 1.0f);
pageNumberLabel.shadowColor = [UIColor blackColor];
pageNumberLabel.adjustsFontSizeToFitWidth = YES;
pageNumberLabel.minimumFontSize = 12.0f;
[pageNumberView addSubview:pageNumberLabel]; // Add label view
[self addSubview:pageNumberView]; // Add page numbers display view
trackControl = [[ReaderTrackControl alloc] initWithFrame:self.bounds]; // Track control view
[trackControl addTarget:self action:@selector(trackViewTouchDown:) forControlEvents:UIControlEventTouchDown];
[trackControl addTarget:self action:@selector(trackViewValueChanged:) forControlEvents:UIControlEventValueChanged];
[trackControl addTarget:self action:@selector(trackViewTouchUp:) forControlEvents:UIControlEventTouchUpOutside];
[trackControl addTarget:self action:@selector(trackViewTouchUp:) forControlEvents:UIControlEventTouchUpInside];
[self addSubview:trackControl]; // Add the track control and thumbs view
document = object; // Retain the document object for our use
[self updatePageNumberText:[document.pageNumber integerValue]];
miniThumbViews = [NSMutableDictionary new]; // Small thumbs
}