iOS 3DTouch功能

1、按压应用图标显示Item列表

1.1 代码添加item

  
    func application(_ application: UIApplication, didFinishLaunchingWithOptions launchOptions: [UIApplication.LaunchOptionsKey: Any]?) -> Bool {
    
        
        // 长按图标 显示的列表项
        let item = UIApplicationShortcutItem(type: "test.xiaopao.item", localizedTitle: "title", localizedSubtitle: "subtitle", icon: UIApplicationShortcutIcon(type: .add), userInfo: ["key" : "value"] as [String : NSSecureCoding])
        application.shortcutItems = [item]
        
        
        let window = UIWindow()
        window.rootViewController = ViewController()
        window.makeKeyAndVisible()
        self.window = window
        return true
    }

1.2 点击item的 处理

    func application(_ application: UIApplication, performActionFor shortcutItem: UIApplicationShortcutItem, completionHandler: @escaping (Bool) -> Void) {
        // 创建item时的 type，根据type来区分哪个item点击进来的
        let type = shortcutItem.type
        switch type {
        case "test.xiaopao.item":
            // doAction
            break
        default:
            // doAction
            break
        }
    }

2、应用内 3Dtouch (Peek & Pop功能）

概述:
Peek和Pop是应用内的一种全新交互模式,当用户不断增加力量在控件上按压,会依次进入四个阶段：
1、轻按控件,除触发Peek的控件外,其他区域全部虚化
2、继续用力Peek被触发,展示Pop界面快照
3、向上滑动展示快捷选项
4、继续用力跳转进入Pop界面

2.1 源控制器

// 遵守 UIViewControllerPreviewingDelegate协议
class ViewController: UIViewController, UIViewControllerPreviewingDelegate {
    
    // 按压要弹出的控制器
    var previewVc: PreviewViewController!
    // 按压的view
    var touchView: UIView!
    
    
    override func viewDidLoad() {
        super.viewDidLoad()
        view.backgroundColor = .white
        

        touchView = UIView()
        touchView.backgroundColor = .red
        touchView.frame = CGRect(x: 100, y: 100, width: 100, height: 100)
        view.addSubview(touchView)

        previewVc = PreviewViewController()

        // 检查页面是否属于3Dtouch
        if self.responds(to: #selector(getter: traitCollection)) {
            if self.traitCollection.forceTouchCapability == .available {
                self.registerForPreviewing(with: self , sourceView: self.view)
            }
        }

    }
    
    func previewingContext(_ previewingContext: UIViewControllerPreviewing, viewControllerForLocation location: CGPoint) -> UIViewController? {
        // 按压要显示的controller
        return previewVc
    }
    
    func previewingContext(_ previewingContext: UIViewControllerPreviewing, commit viewControllerToCommit: UIViewController) {
        // 按压弹出controller 之后继续按压跳转
        self.show(viewControllerToCommit, sender: self)
    }
    
}

2.2 弹出的控制器

重写 previewActionItems 属性

class PreviewViewController: UIViewController {

    override func viewDidLoad() {
        super.viewDidLoad()

        
        view.backgroundColor = .green
        preferredContentSize = CGSize(width: 300, height: 200)
        let backButton = UIButton(frame: CGRect(x: 100, y: 100, width: 100, height: 100))
        backButton.setTitle("返回", for: .normal)
        backButton.titleLabel?.textColor = .black
        backButton.addTarget(self, action: #selector(backAction), for: .touchUpInside)
        view.addSubview(backButton)
        
    }
    
    @objc func backAction() {
        dismiss(animated: true, completion: nil)
        
    }

    override var previewActionItems: [UIPreviewActionItem] {
        return [
            UIPreviewAction(title: "title", style: .default, handler: { (action, vc) in
                // doAction
            })
        ]
    }
}

参考：iOS 3DTouch功能