Swift將按鈕添加到視圖編程方式與動作

我想添加按鈕到編程方式創建的視圖，我添加到主視圖。我無法採取行動來處理按鈕。這是我試過到目前爲止：按鈕點擊Swift將按鈕添加到視圖編程方式與動作

itemView = UIImageView(frame:CGRect(x:0, y:0, width:240, height:375)) 
itemView.backgroundColor = UIColor(red: 255.0/0.0, green: 255.0/0.0, blue: 255.0/0.0, alpha: 0.05) 
itemView.contentMode = .Center 

buttonConnect = UIButton(frame: CGRect(x:0, y:335, width:120, height:40)) 
buttonConnect.backgroundColor = UIColor(red: 0.8, green: 0.6, blue: 0.2, alpha: 1.0) 
buttonConnect.setTitle("Connect", forState: .Normal) 
buttonConnect.tag = 3 
buttonConnect.addTarget(itemView, action: "btnConnectTouched:", forControlEvents:.TouchDown) 
itemView.addSubview(buttonConnect) 

self.addSubview(itemView)

方法是這樣的：

func btnConnectTouched(sender:UIButton!) 
{ 
    print("button connect touched") 
}

可有人建議這是什麼問題？謝謝！

來源

2015-11-24 bla0009

我不明白你爲什麼要在UIImageView中添加一個按鈕。即使這是你所需要的，帶一個UIView，然後把所有其他控件放在裏面。你的按鈕沒有被點擊的原因是你已經把它放在UIImageView和UIImageView中，userInteractionEnabled的默認值是false。所以你需要啓用它，即

itemView.userInteractionEnabled = true;

還設置按鈕目標爲'self'而不是itemView。

來源

2015-11-24 12:33:05 Muneeba

這是一個很好的答案。非常感謝！我將'UIImageView'改爲'UIView'，並且將目標改爲'self'，並且它可以工作 – bla0009

你錯在目標：

// buttonConnect.addTarget(itemView, action: "btnConnectTouched:", forControlEvents:.TouchDown) 
    // using 
    buttonConnect.addTarget(self, action: "btnConnectTouched:", forControlEvents:.TouchDown) 
    // or buttonConnect.addTarget(self, action: "btnConnectTouched:", forControlEvents:.TouchUpInside)

來源

2015-11-24 12:17:19 anhtu

我嘗試這樣做，它仍然沒有工作。 – bla0009

@ bla0009是否將'itemView'更改爲'self'？ – anhtu

@anthu是的，仍然沒有發生按鈕點擊 – bla0009

override func viewDidLoad() { 
    super.viewDidLoad() 
    // Do any additional setup after loading the view, typically from a nib. 

    let buttonConnect = UIButton()  
    buttonConnect = UIButton(frame: CGRect(x:0, y:335, width:120, height:40)) 
    buttonConnect.backgroundColor = UIColor(red: 0.8, green: 0.6, blue: 0.2, alpha: 1.0) 
    buttonConnect.setTitle("Connect", forState: .Normal) 
    buttonConnect.tag = 3 
    buttonConnect.addTarget(self, action: "btnConnectTouched:", forControlEvents: .TouchUpInside)  
    self.view.addSubview(buttonConnect) 
} 

func btnConnectTouched(sender: UIButton!) { 
    print("button connect touched"); 
}

來源

2015-11-24 12:19:19

更改forControlEvents：.TouchDown爲forControlEvents：.TouchUpInside –

嘗試改變tarjet和事件

buttonConnect.addTarget(itemView, action: "btnConnectTouched:", forControlEvents:.TouchDown)

到

buttonConnect.addTarget(self, action: "btnConnectTouched:", forControlEvents:. TouchUpInside)

來源

2015-11-24 12:20:06 Manuel

我試過這個，它仍然無法正常工作。 – bla0009

嘗試buttonConnect.addTarget(itemView, action: "btnConnectTouched", forControlEvents:.TouchUpInside)沒有:後

來源

2015-11-24 12:23:14

如果您可以在代碼中進行以下兩項更改，它將起作用。

替換用的UIImageView爲UIView的ItemView控件類型和
與self.view.addSubview更換self.addSubview（ItemView控件）（ItemView控件）

你的最終代碼看起來應該像....

override func viewDidLoad() { 
    super.viewDidLoad() 
    // Do any additional setup after loading the view, typically from a nib. 

    var itemView = UIView(frame:CGRect(x:0, y:0, width:240, height:375)) 
    itemView.backgroundColor = UIColor(red: 255.0/0.0, green: 255.0/0.0, blue: 255.0/0.0, alpha: 0.05) 
    itemView.contentMode = .Center 

    var buttonConnect = UIButton(frame: CGRect(x:0, y:335, width:120, height:40)) 
    buttonConnect.backgroundColor = UIColor(red: 0.8, green: 0.6, blue: 0.2, alpha: 1.0) 
    buttonConnect.setTitle("Connect", forState: .Normal) 
    buttonConnect.tag = 3 
    buttonConnect.addTarget(self, action: "btnConnectTouched:", forControlEvents:.TouchDown) 


    itemView.addSubview(buttonConnect) 

    self.view.addSubview(itemView) 

} 

func btnConnectTouched(sender:UIButton!) 
{ 
    print("button connect touched") 
}

試試這個....它的工作對我來說....

來源

2015-11-24 12:55:26

Swift將按鈕添加到視圖編程方式與動作

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