最终效果

全中实在太难了！！！......

最终效果

1、UI布局

1、拖入pickerView，设置水平垂直居中，，
2、拖入Label设置左右边距20，下边距20
3、拖入button，设置上下左右边距20，高度40
5、设置label上边距20
6、选中三个控件，更新约束

2、把三个控件都拖入到ViewController中

创建数据源

private lazy var data : NSArray = {
       let imageArray = ["👻","👸","💩","😘","🍔","🤖","🍟","🐼","🚖","😭","🎹","😴"]
        var data1 = [String]()
        var data2 = [String]()
        var data3 = [String]()
        for var i = 0 ; i <= 100 ; i += 1
        {
            data1.append(imageArray[NSInteger(arc4random() % 10)])
            data2.append(imageArray[NSInteger(arc4random() % 10)])
            data3.append(imageArray[NSInteger(arc4random() % 10)])
//            data1.append(imageArray[0])
//            data2.append(imageArray[0])
//            data3.append(imageArray[0])
        }
        let array = [data1,data2,data3]
        return array
    }()

<br />
设置代理，圆角

startBtn.layer.cornerRadius = 5
        
        
        //设置代理
        pickerView.delegate = self
        pickerView.dataSource = self

<br />
实现代理方法

// returns the number of 'columns' to display.
    // 有多少列
    func numberOfComponentsInPickerView(pickerView: UIPickerView) -> Int{
        return data.count
    }
    
    // returns the # of rows in each component..
    // 每一列有多少个
    func pickerView(pickerView: UIPickerView, numberOfRowsInComponent component: Int) -> Int{
        return data[component].count
    }
    
    func pickerView(pickerView: UIPickerView, titleForRow row: Int, forComponent component: Int) -> String?{
        let ss : String = (data[component] as! NSArray)[row] as! String
        return ss
    }

<br />
实现按钮点击方法

     @IBAction func startBtnClick(sender: UIButton) {
        
        //随机选中
        pickerView.selectRow(Int(arc4random()) % 90 + 3, inComponent: 0, animated: true)
        pickerView.selectRow(Int(arc4random()) % 90 + 3, inComponent: 1, animated: true)
        pickerView.selectRow(Int(arc4random()) % 90 + 3, inComponent: 2, animated: true)
        
        
        //把值取出来，
        let d1 = (data[0][pickerView.selectedRowInComponent(0)]) as! String
        let d2 = (data[1][pickerView.selectedRowInComponent(1)]) as! String
        let d3 = (data[2][pickerView.selectedRowInComponent(2)]) as! String
        //打印取出的值
        print(d1,d2,d3)
        
        //判断值是否相等
        if d1 == d2 && d1 == d3{
            messageLabel.text = "Bingo!"
        }
        else{
            messageLabel.text = "💔"
        }
        
        //按钮动画
        UIView.animateWithDuration(0.5, delay: 0, usingSpringWithDamping: 0.35, initialSpringVelocity: 0, options: .CurveEaseOut, animations: { 
            self.startBtn.bounds = CGRect(x: self.startBtn.bounds.origin.x, y: self.startBtn.bounds.origin.y, width: self.startBtn.bounds.size.width + 20, height: self.startBtn.bounds.size.height)
            }) { (_) in
                UIView.animateWithDuration(0.15, animations: {
                    self.startBtn.bounds = CGRect(x: self.startBtn.bounds.origin.x, y: self.startBtn.bounds.origin.y, width: self.startBtn.bounds.size.width - 20, height: self.startBtn.bounds.size.height)
                })
        }
    }

<br />

Demo - PickerView