我创建了一个带有侧边菜单的应用程序，例如 facebooks。我有一个根视图控制器，它在自身上添加一个视图，然后当用户按下“菜单”按钮时，它将滑动视图，以便您可以看到菜单。
我的问题是，当视图第一次加载时，它看起来 UINavBar 比它应该的低大约 20 像素左右。（下图看起来有点偏离中心，因为它是模态水平翻转）
然后，当模态转换完成时，它会自动调整自身并在该状态栏下方向上移动。
这是我按下“菜单”按钮时发生的屏幕截图。它将顶视图向右滑动
正如您在上面的图片中看到的，我将左箭头和右箭头框架背景设置为红色，以便我可以看到可点击/可点击区域的位置。我有另一张图片，我在上面画了一条蓝线，如果我点击蓝线或以上，则不会触发右箭头。如果我单击左侧相同的一般区域，菜单按钮将触发。我能够在模拟器和移动设备上重现这一点（所以我不是胖手指）。
在我看来，由于导航栏的加载低于预期，iPhone 认为它仍处于该位置，因此当我在UIButton框架内单击时，它仍在触发菜单而不是触发箭头选择器。如果我在箭头中间直接点击，它会触发箭头选择器，但只是在图像之外一点点，它不会触发箭头选择器。
这是我的RootViewControllerviewDidLoad
AppointmentViewController *appointmentViewController = [self.storyboard instantiateViewControllerWithIdentifier:@"AppointmentViewController"];
NSLog(@"B: %@",NSStringFromCGRect(appointmentViewController.view.frame));
self.navController = [[UINavigationController alloc] initWithRootViewController:appointmentViewController];
NSLog(@"B2: %@",NSStringFromCGRect(appointmentViewController.view.frame));
NSLog(@"Nav Bounds: %@",NSStringFromCGRect(self.navController.view.frame));
NSLog(@"Bounds: %@",NSStringFromCGRect(self.contentView.bounds));
self.navController.view.frame = self.contentView.bounds;
NSLog(@"Nav Bounds2: %@",NSStringFromCGRect(self.navController.view.frame));
[self addShadowToMenu];
[self.contentView addSubview:self.navController.view];
RootViewController 日志
2012-04-30 12:24:44.533 My-App[19929:fb03] B: {{0, 20}, {320, 460}}
2012-04-30 12:24:44.535 My-App[19929:fb03] B2: {{0, 20}, {320, 460}}
2012-04-30 12:24:44.535 My-App[19929:fb03] Nav Bounds: {{0, 0}, {320, 480}}
2012-04-30 12:24:44.535 My-App[19929:fb03] Bounds: {{0, 0}, {320, 460}}
2012-04-30 12:24:44.535 My-App[19929:fb03] Nav Bounds2: {{0, 0}, {320, 460}}
约会视图控制器
self.title = [dataObj.preferences objectForKey:@"appts_name_plural"];
self.navigationItem.title = self.title;
dayView = [[APCalendarDayView alloc] initWithCalendarView:(APCalendarView *)self];
APListView = [self.storyboard instantiateViewControllerWithIdentifier:@"AppointmentListView"];
APListView.tableView.tableFooterView = [[UIView alloc] initWithFrame:CGRectZero];
SideMenuView *myDelegate = [[SideMenuView alloc] init];
[self setSideMenuDelegate:myDelegate];
//set the delegate's currentViewController property so that we can add a subview to this View.
[sideMenuDelegate setCurrentViewController:self];
UIBarButtonItem *flexSpace = [[UIBarButtonItem alloc] initWithBarButtonSystemItem:UIBarButtonSystemItemFlexibleSpace target:nil action:nil];
UIBarButtonItem *today = [[UIBarButtonItem alloc] initWithTitle:@"Today" style:UIBarButtonItemStyleBordered target:nil action:@selector(todayPressed)];
NSArray *appointmentNavigationItems = [[NSArray alloc] initWithObjects:@"Day",@"List",@"Month", nil];
navcontrol = [[UISegmentedControl alloc] initWithItems:appointmentNavigationItems];
[navcontrol setSegmentedControlStyle:UISegmentedControlStyleBar];
[navcontrol addTarget:self action:@selector(appointmentNavigationClicked:) forControlEvents:UIControlEventValueChanged];
[navcontrol setSelectedSegmentIndex:0];
UIBarButtonItem *segmentItems = [[UIBarButtonItem alloc] initWithCustomView:navcontrol];
NSArray *items = [NSArray arrayWithObjects:today,flexSpace,segmentItems, flexSpace, nil];
[appointmentToolbar setItems:items animated:NO];
[appointmentToolbar setAutoresizesSubviews:YES];
[[self.view superview] addSubview:myDelegate.view];
[self setViewSizeOffset:(appointmentToolbar.bounds.size.height)];
日历日视图
- (void)addSubviewsToHeaderView:(UIView *)headerView
{
const CGFloat kChangeMonthButtonWidth = 46.0f;
const CGFloat kChangeMonthButtonHeight = 44.0f;
const CGFloat kMonthLabelWidth = 215.0f;
const CGFloat kHeaderVerticalAdjust = 7.f;
// Header background gradient
UIImageView *backgroundView = [[UIImageView alloc] initWithImage:[UIImage imageNamed:@"Kal.bundle/kal_grid_background.png"]];
CGRect imageFrame = headerView.frame;
imageFrame.origin = CGPointZero;
backgroundView.frame = imageFrame;
[headerView addSubview:backgroundView];
[backgroundView setAutoresizesSubviews:YES];
[backgroundView setAutoresizingMask:UIViewAutoresizingFlexibleWidth];
// Create the previous month button on the left side of the view
CGRect previousMonthButtonFrame = CGRectMake(self.left, 0, kChangeMonthButtonWidth, kChangeMonthButtonHeight);
UIButton *previousMonthButton = [[UIButton alloc] initWithFrame:previousMonthButtonFrame];
[previousMonthButton setBackgroundColor:[UIColor redColor]];
[previousMonthButton setImage:[UIImage imageNamed:@"Kal.bundle/kal_left_arrow.png"] forState:UIControlStateNormal];
previousMonthButton.contentHorizontalAlignment = UIControlContentHorizontalAlignmentCenter;
previousMonthButton.contentVerticalAlignment = UIControlContentVerticalAlignmentCenter;
[previousMonthButton addTarget:self action:@selector(showPreviousDay) forControlEvents:UIControlEventTouchUpInside];
//[previousMonthButton setAutoresizingMask:UIViewAutoresizingFlexibleWidth | UIViewAutoresizingFlexibleLeftMargin];
[headerView addSubview:previousMonthButton];
// Draw the selected month name centered and at the top of the view
CGRect monthLabelFrame = CGRectMake((self.frame.size.width/2.0f) - (kMonthLabelWidth/2.0f), kHeaderVerticalAdjust, kMonthLabelWidth, kMonthLabelHeight);
headerTitleLabel = [[UILabel alloc] initWithFrame:monthLabelFrame];
headerTitleLabel.backgroundColor = [UIColor clearColor];
headerTitleLabel.font = [UIFont boldSystemFontOfSize:22.f];
headerTitleLabel.textAlignment = UITextAlignmentCenter;
headerTitleLabel.textColor = [UIColor colorWithPatternImage:[UIImage imageNamed:@"Kal.bundle/kal_header_text_fill.png"]];
headerTitleLabel.shadowColor = [UIColor whiteColor];
headerTitleLabel.shadowOffset = CGSizeMake(0.f, 1.f);
//[self setHeaderTitleText:[logic selectedMonthNameAndYear]];
NSDateFormatter *dateFormatter = [[NSDateFormatter alloc] init];
[dateFormatter setDateFormat:@"E, MMM dd, yyyy"];
headerTitleLabel.text = [dateFormatter stringFromDate:dataObj.activeDate];
[headerView addSubview:headerTitleLabel];
// Create the next month button on the right side of the view
CGRect nextMonthButtonFrame = CGRectMake(self.frame.size.width - kChangeMonthButtonWidth, 0, kChangeMonthButtonWidth, kChangeMonthButtonHeight);
UIButton *nextMonthButton = [[UIButton alloc] initWithFrame:nextMonthButtonFrame];
nextMonthButton.frame = nextMonthButtonFrame;
[nextMonthButton setImage:[UIImage imageNamed:@"Kal.bundle/kal_right_arrow.png"] forState:UIControlStateNormal];
[nextMonthButton setBackgroundColor:[UIColor redColor]];
nextMonthButton.contentHorizontalAlignment = UIControlContentHorizontalAlignmentCenter;
nextMonthButton.contentVerticalAlignment = UIControlContentVerticalAlignmentCenter;
[nextMonthButton addTarget:self action:@selector(showFollowingDay) forControlEvents:UIControlEventTouchUpInside];
//[nextMonthButton setAutoresizingMask:UIViewAutoresizingFlexibleWidth];
[headerView addSubview:nextMonthButton];
}
UIView *headerView = [[UIView alloc] initWithFrame:CGRectMake(0.f, 0.f, self.frame.size.width, kHeaderHeight)];
headerView.backgroundColor = [UIColor grayColor];
[self addSubviewsToHeaderView:headerView];
[headerView setAutoresizesSubviews:YES];
[headerView setAutoresizingMask:UIViewAutoresizingFlexibleWidth | UIViewAutoresizingFlexibleHeight];
[self addSubview:headerView];
[self bringSubviewToFront:headerView];
如果我将headerView向下移动得更远，它将允许我选择红色区域中的任何位置并触发箭头选择器。但是，我希望它与 Apples 日历匹配并且位于导航栏下方。
任何人都知道为什么导航栏会阻止点击的顶部headerView？要清楚被阻止的 headerView 部分是从蓝线的底部向上。带有红色背景的UIButton动作与框架相关联，因此它应该触发事件，但似乎导航栏阻止了一半的UIButton接收点击。