如何在選擇後獲取文本按鈕？

嗨我試圖讓它選中後的文本的按鈕。我正在這樣做，以中心的圖像和文本的按鈕。如何在選擇後獲取文本按鈕？

我創建了一個函數來幫助我。我想在選擇按鈕時再次調用它來再次渲染大小，然後再次中心當前文本按鈕的依賴關係。但是，選擇時，我不會在文本中進行任何更改。有人知道我該怎麼做？

override func viewDidLoad() { 
    super.viewDidLoad() 

    let button: UIButton = UIButton() 

    button.frame = CGRectMake(100, 100, 150, 60) 

    button.setImage(UIImage(named: "img"), forState: .Normal) 
    button.setImage(UIImage(named: "imgSelected"), forState: .Selected) 


    button.setTitle("Test", forState: .Normal) 
    button.setTitle("Prueba", forState: .Selected) 

    button.setTitleColor(UIColor.lightGrayColor(), forState: .Normal) 
    button.setTitleColor(UIColor.lightGrayColor(), forState: .Selected) 

    button.addTarget(self, action: #selector(HistoricalViewController.buttonAction(_:)), forControlEvents: UIControlEvents.TouchUpInside) 
    //Center the image with text 
    setupButton(button) 
    self.view.addSubview(button) 
} 

func buttonAction(sender:UIButton){ 
    let button = sender as UIButton 
    if button.selected{ 
     button.selected = false 
    }else{ 
     button.selected = true 
    } 
    print("Current title \(button.currentTitle!)") 
    setupButton(button) 
} 

func setupButton(button: UIButton) { 
    let spacing: CGFloat = 6.0 
    let imageSize: CGSize = button.imageView!.image!.size 
    button.titleEdgeInsets = UIEdgeInsetsMake(0.0, -imageSize.width, -(imageSize.height + spacing), 0.0); 
    let labelString = NSString(string: button.titleLabel!.text!) 
    print("button title \(button.titleLabel!.text!)") 
    let titleSize = labelString.sizeWithAttributes([NSFontAttributeName: button.titleLabel!.font]) 
    button.imageEdgeInsets = UIEdgeInsetsMake(-(titleSize.height + spacing), 0.0, 0.0, -titleSize.width); 
}

編輯：

我更新了我的功能就是這樣，保持圖像的中心

func buttonAction(sender:UIButton){ 
    let button = sender as UIButton 
    if button.selected{ 
     button.selected = false 
     button.setTitle("Test", forState: UIControlState.Normal) 
    }else{ 
     button.selected = true 
     button.setTitle("Prueba", forState: UIControlState.Normal) 
    } 
    setupButton(button) 
}

而且

func setupButton(button: UIButton) { 
    let spacing: CGFloat = 6.0 
    let imageSize: CGSize = button.imageView!.image!.size 
    button.titleEdgeInsets = UIEdgeInsetsMake(0.0, -imageSize.width, -(imageSize.height + spacing), 0.0); 
    let labelString = NSString(string: button.titleForState(button.selected ? .Selected : .Normal)!) 
    let titleSize = labelString.sizeWithAttributes([NSFontAttributeName: button.titleLabel!.font]) 
    button.imageEdgeInsets = UIEdgeInsetsMake(-(titleSize.height + spacing), 0.0, 0.0, -titleSize.width); 
}

來源

2016-03-18 Dasoga

此行添加到您的buttonAction（）

let currentTitle = button.titleForState(.Selected)

來源

2016-03-18 02:54:37

行爲buttonAction被稱爲？我認爲你應該改變

button.addTarget(self, action: #selector(HistoricalViewController.buttonAction(_:)), forControlEvents: UIControlEvents.TouchUpInside)

有：

button.addTarget(self, action: "buttonAction:", forControlEvents: UIControlEvents.TouchUpInside)

和改進：

func buttonAction(sender:UIButton){ 
     sender.selected = !sender.selected 
     print("Current title \(sender.currentTitle!)") 
     setupButton(sender) 
}

，如果你使用的故事板，這-111更容易

來源

2016-03-18 02:57:25

在setupButton，改變這個：

let labelString = NSString(string: button.titleForState(button.selected ? .Selected : .Normal)!)

來源

2016-03-18 03:02:01

謝謝！這適用於獲取當前按鈕標題。 – Dasoga

如何在選擇後獲取文本按鈕？

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