我已经搜索了在这里可以找到的每个问题/答案，但我不知道如何隐藏 UIPageViewController 中所有 View Controller 的状态栏。这是我的 UIPageViewController 类中的代码:
class TipsVC: UIPageViewController, UIPageViewControllerDelegate {
lazy var VCArr: [UIViewController] = {
return [self.VCInstance(name: "T1"),
self.VCInstance(name: "T2"),
self.VCInstance(name: "T3")]
}()
private func VCInstance(name: String) -> UIViewController {
return UIStoryboard(name: "Main", bundle: nil).instantiateViewController(withIdentifier: name)
}
override public func viewDidLoad() {
super.viewDidLoad()
//self.dataSource = self
self.delegate = self
if let OB1 = VCArr.first {
setViewControllers([OB1], direction: .forward, animated: true, completion: nil)
let pageController = UIPageControl.appearance()
pageController.pageIndicatorTintColor = UIColor(red:1.00, green:0.88, blue:0.92, alpha:1.0)
pageController.currentPageIndicatorTintColor = UIColor(red:1.00, green:0.25, blue:0.51, alpha:1.0)
}
}
override func viewDidLayoutSubviews() {
super.viewDidLayoutSubviews()
for view in self.view.subviews {
if view is UIScrollView {
view.frame = UIScreen.main.bounds
} else if view is UIPageControl {
view.backgroundColor = UIColor.clear
}
}
}
public func pageViewController(_ pageViewController: UIPageViewController, viewControllerBefore viewController: UIViewController) -> UIViewController?{
guard let viewControllerIndex = VCArr.index(of: viewController) else {
return nil
}
let previousIndex = viewControllerIndex - 1
guard previousIndex >= 0 else {
return VCArr.last
}
guard VCArr.count > previousIndex else {
return nil
}
return VCArr[previousIndex]
}
public func pageViewController(_ pageViewController: UIPageViewController, viewControllerAfter viewController: UIViewController) -> UIViewController?{
guard let viewControllerIndex = VCArr.index(of: viewController) else {
return nil
}
let nextIndex = viewControllerIndex + 1
guard nextIndex < VCArr.count else {
return VCArr.first
}
guard VCArr.count > nextIndex else {
return nil
}
return VCArr[nextIndex]
}
public func presentationCount(for pageViewController: UIPageViewController) -> Int{
return VCArr.count
}
public func presentationIndex(for pageViewController: UIPageViewController) -> Int{
guard let OB1 = viewControllers?.first,
let OB1Index = VCArr.index(of: OB1) else {
return 0
}
return OB1Index
}
public func nextPageWithIndex(index: Int)
{
let nextVC = VCArr[index]
setViewControllers([nextVC], direction: .forward, animated: true, completion: nil)
}
}
这是我的一个 View Controller 的代码示例:
class T1: UIViewController {
@IBOutlet var nextBtn: UIButton!
override func viewDidLoad() {
super.viewDidLoad()
}
override func viewDidAppear(_ animated: Bool) {
super.viewDidAppear(true)
UIApplication.shared.isStatusBarHidden = true
}
@IBAction func nextBtnDidPress(_ sender: Any) {
let next = self.parent as! TipsVC
next.nextPageWithIndex(index: 1)
}
}
我很清楚如何在常规 View Controller 上隐藏状态栏，但是当我使用 UIPageViewController 时我无法获得相同的结果。这是怎么回事？
最佳答案
要从特定的 viewController 中隐藏状态栏，您需要在 viewWillAppear 中隐藏状态栏，并在 viewWillDisAppear 中隐藏状态栏
override func viewWillAppear(_ animated: Bool) {
super.viewWillAppear(animated)
UIApplication.shared.isStatusBarHidden = true
}
override func viewWillDisappear(_ animated: Bool) {
super.viewWillDisappear(animated)
UIApplication.shared.isStatusBarHidden = false
}
viewWillAppear 将在打开特定 viewController 之前调用，viewWillDisAppear 将在关闭特定 viewController 之后调用
如果您遇到 UIPageViewController 问题，请使用 UIViewController 并将 UIPageViewController 嵌入其中以供引用检查下面的代码
var pageContainer: UIPageViewController!
pageContainer = UIPageViewController(transitionStyle: .scroll, navigationOrientation: .horizontal, options: nil)
pageContainer.delegate = self
pageContainer.dataSource = self
pageContainer.setViewControllers([getViewControllerAtIndex(index: 0)] as [UIViewController], direction: .forward, animated: false, completion: nil)
pageContainer.view.frame = CGRect(x: 0, y: 0, width: self.view.frame.width, height: self.view.frame.height)
self.view.addSubview(pageContainer.view)
希望这对您有帮助
关于ios - 如何隐藏 UIPageViewController 上的状态栏？ (所有 View Controller )，我们在Stack Overflow上找到一个类似的问题： https://stackoverflow.com/questions/47550505/