屏幕自动旋转与手动旋转总结

swift

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let appdelegate = UIApplication.shared.delegate as! AppDelegate

// 监听屏幕旋转事件

NotificationCenter.default.rx.notification(UIApplication.didChangeStatusBarOrientationNotification)
    .subscribe(onNext: { [weak self] (_) in
        guard let self = self, UIViewController.topMost == self else {return} // 控制仅最前端为自己时才会触发改变元素方法
        self.changeElementsWhenRotate(showLock: true)
    })
    .disposed(by: disposeBag)

/// 显示横屏与竖屏的逻辑 (添加移除相关 view)
///
/// - Parameter showLock: 是否显示锁定界面, 因为要隐藏 tabbar, 进入个股详情后再退回到本页面会自动显示底部 tabBar,
/// 因此要在 viewWillAppear 中调用本方法, 并且不显示锁定框
private func changeElementsWhenRotate(showLock: Bool) {
    guard let wtVC = vcDic[.wt] as? QTWTMainVC else { return }
    wtVC.popView.removeFromeSuperview()
    wtVC.menuBtn.tintColor = UIColor(hex: 0xB3B3B3)

    /// 菜单栏高度
    var menuHeight: CGFloat = 0.0
    /// 跑马灯高度
    var marqueHeight: CGFloat = 0.0

    if UIApplication.shared.statusBarOrientation.isLandscape {
        self.lockToastView.isHidden = !showLock
        DispatchQueue.main.asyncAfter(deadline: DispatchTime.now() + 2) {
            self.lockToastView.isHidden = true
        }
        navigationController?.setNavigationBarHidden(true, animated: false)
        unlockBtn.isHidden = false
        self.tabBarController?.tabBar.isHidden = true
        wtVC.noLoginView.isHidden = true
        menuHeight = 0.0
        wtVC.menuBtn.isHidden = true
        marqueHeight = 0.0
    } else {
        navigationController?.setNavigationBarHidden(false, animated: false)
        self.lockToastView.isHidden = true
        self.lockSuccessView.isHidden = true
        unlockBtn.isHidden = true
        tabBarController?.tabBar.isHidden = false
        wtVC.noLoginView.isHidden = userM.isLogon ? true : false
        wtVC.menuBtn.isHidden = false
        menuHeight = 40.0
        marqueHeight = 30.0
    }

    wtVC.menuView.snp.remakeConstraints { make in
        make.top.equalToSuperview()
        make.left.equalToSuperview().offset(13)
        make.right.equalToSuperview().offset(-80.0)
        make.height.equalTo(menuHeight)
    }

    /// 若存在跑马灯, 则将跑马灯高度设为零并且本身 view 距顶部设为零
    if let parent = parent as? BaseMarqueeController, let marque = parent.marqueeView {
        marqueHeight = (marque.isRunning || marque.isPaused) ? marqueHeight : 0.0 // 在跑马灯运行期间, 仍然使用跑马灯自身的高度 30, 否则为 0
        marque.isHidden = marqueHeight == 0.0 ? true : false // 本步骤隐藏之后即可不使用下一步骤的重新布局, 加上是双重保险
        marque.snp.remakeConstraints {(make) in
            make.top.left.right.equalToSuperview()
            make.height.equalTo(marqueHeight)
        }
        self.view.snp.remakeConstraints {(make) in
            make.top.equalTo(marqueHeight)
            make.left.right.bottom.equalToSuperview()
        }
    }

    subviews.enumerated().forEach { (index, view) in
        view.snp.remakeConstraints {(make) in
            make.top.height.width.equalToSuperview()
            make.left.equalToSuperview().offset(UIDevice.ck.width * CGFloat(index))
        }
    }

    // 保证在旋转屏幕后得到正确的子 VC 布局
    wtVC.containerVcs.forEach {(type, vc) in
        vc.view.snp.remakeConstraints {(make) in
            make.left.equalTo(UIDevice.ck.width * CGFloat(type.index))
            make.top.equalToSuperview()
            make.width.equalTo(UIDevice.ck.width)
            make.height.equalToSuperview()
        }
    }

    scrollView.setContentOffset(CGPoint(x: self.scrollView.bounds.width * CGFloat(quotationType.index), y: 0), animated: false)
    wtVC.scrollView.setContentOffset(CGPoint(x: CGFloat(wtVC.selectedVCType.index) * UIDevice.ck.width, y: 0), animated: false)
}

// 强制旋转屏幕
unlockBtn.rx.tap
    .subscribe(onNext: { [weak self] (_) in
        guard let self = self else {return}
        self.unlockBtn.isHidden = true
        self.appdelegate.interfaceOrientations = .all
        self.isLocked = false
        UIDevice.current.setValue(UIInterfaceOrientation.portrait.rawValue, forKey: "orientation")
        if UIDevice.current.orientation == .portrait { // 特殊情况: 锁定后在竖屏状态下解锁
            UIViewController.attemptRotationToDeviceOrientation()
            self.showLandscape()
        }
    })
    .disposed(by: disposeBag)

headerView.buttonRotate.rx.tap
    .subscribe(onNext: { (_) in
        UIDevice.current.setValue(UIInterfaceOrientation.landscapeRight.rawValue, forKey: "orientation")
        UIViewController.attemptRotationToDeviceOrientation()
    })
    .disposed(by: disposeBag)

// 强制锁定屏幕
lockSuccessView.tapGesture.rx.event
    .subscribe(onNext: { [weak self] (_) in
        guard let self = self else {return}
        self.lockSuccessView.isHidden = true
        switch UIDevice.current.orientation {
            case .landscapeLeft: self.appdelegate.interfaceOrientations = .landscapeRight
            case .landscapeRight: self.appdelegate.interfaceOrientations = .landscapeLeft
            default: break
        }
    })
    .disposed(by: disposeBag)