Swift 中的 WKInterfaceTable、行控制器和按钮操作

WKInterfaceTable, Row Controllers and Button actions in Swift

我在 Swift 中尝试 Apple Watch 开发时遇到了一项相当基本的任务。我最近收到了似乎是 Obj C 中问题的完美答案,但我似乎无法翻译它。

我有一个界面控制器,其中包含一个 table 和同一行控制器的多行。每行包含两个按钮。当点击按钮时,它的背景图像会发生变化,但需要在界面控制器中调用另一个函数 class,并且该函数需要访问界面控制器中的 class 级变量 class.

Table 连接到接口控制器。按钮连接到行控制器 class。这是我简化的 Swift 代码。感谢观看!

/// MY INTERFACE CLASS ///

class MainBoard: WKInterfaceController {

    @IBOutlet weak var TileGrid: WKInterfaceTable!

    let numRows = 3

    let imageNames =    ["img1","img2","img3"]

    override func awakeWithContext(context: AnyObject?) {
        super.awakeWithContext(context)

        // Configure interface objects here.
        initBoard()
    }

    func initBoard() {                
        self.TileGrid.setNumberOfRows(self.numRows, withRowType: "Row")

        for var i = 0; i < numRows; i++ {

            let tmpImageA = UIImage(named: imageNames[0])
            let tmpImageB = UIImage(named: imageNames[1])

            let rowOfTiles = self.TileGrid.rowControllerAtIndex(i) as Row

            rowOfTiles.backImageA = tmpImageA
            rowOfTiles.backImageB = tmpImageB

        }        
    }

    func doSomething() {
        //this function needs to be called whenever a button is pressed
    }

}

///////MY ROW CONTROLLER CLASS ////////////////////////

class Row : NSObject {

    // At runtime these will be assigned based on the random game board creation
    var backImageA = UIImage(named: "default.png")
    var backImageB = UIImage(named: "default.png")

    @IBOutlet weak var TileA: WKInterfaceButton!
    @IBOutlet weak var TileB: WKInterfaceButton!

    @IBAction func TapTileA() {
        TileA.setBackgroundImage(backImageA)
        //NEED TO CALL FUNCTION DO SOMETHING IN INTERFACE CONTROLLER
    }

    @IBAction func TapTileB() {
        TileB.setBackgroundImage(backImageB)
        //NEED TO CALL FUNCTION DO SOMETHING IN INTERFACE CONTROLLER

    }

}

我的最佳答案是在您的 RowController class 中创建一个委托,然后在您的 InterfaceController

中实现该委托

委托可以有方法 buttonOneClickHappenedbuttonTwoClickHappened

然后每个 RowController 都将委托作为 属性,当您创建 RowController 时调用 setDelegate: self,其中 self 是您的 InterfaceController

希望这对您有所帮助。