EXC_BAD_INSTRUCTION聲明button.frame

Question

當我收到說線程1的錯誤：EXC_BAD_INSTRUCTION（代碼= EXC_1386_INVOP，子碼=爲0x0）當我試圖聲明

var buttonFrame = customButton.frame 

這裏是我的代碼。任何幫助表示讚賞。

override func viewDidLoad() { 
    super.viewDidLoad() 

    //sends menuOverlay to back on load 
    parentView.sendSubviewToBack(menuOverlay) 
    self.menuOverlay.hidden = true 

    //sends sliderContainer back and makes its origin at the button 
    let containerFrame = sliderContainer.frame 

    let containerFrameX = containerFrame.minX 
    let containerFrameY = containerFrame.minY 

    var buttonFrame = customButtonOne.frame 

    let sliderOriginX = buttonFrame.minX + (buttonFrame.width/2) 
    let containerTranslationX = CGFloat(containerFrameX-sliderOriginX) 
    let containerTranslationY = CGFloat(-containerFrameY) 

    self.sliderContainer.transform = CGAffineTransformMakeScale(0.001, 0.001) 
    self.sliderContainer.transform = CGAffineTransformMakeTranslation(containerTranslationX, containerTranslationY) 
} 

Answer 1

如果customButtonOne是不是迷上了一個IBOutlet，這將是nil。 nil沒有frame屬性，因此崩潰。

確保您的IBOutlet已連接。