ios - UIView.animate 无法在 testflight 中工作 - Xcode 8 Swift 3

Question

我有一个像这样的 UIView 动画:

func animateStart() {
    UIView.animate(withDuration: 3, animations: {
        self.firstImg.image = UIImage(named:"image.JPG")
        self.firstImg.alpha = 1
    }, completion: { finished in
        if finished {
            self.animateSecond()
        }
    })
}

func animateSecond() {        
    UIView.animate(withDuration: 2, animations: {
        self.firstLbl.text = "This..."
        self.firstLbl.alpha = 1            
        self.firstLbl.alpha = 0            
    }, completion: { finished in
        if finished {
            self.animateThird()
        }
    })

}

它在模拟器中以及构建到本地设备时都能完美运行。然而，我今天早上将我的构建发布到 testflight，并且只有 UIView 的前 3 帧动画，然后是最后一帧动画。 (我一共有9个)。标签继续按预期进行动画处理。我知道他们昨天更新了 testflight...更新后有人遇到类似的情况吗？

Answer 1

这是 @rmaddy 的答案，但我认为它应该被批准为正确的答案，因为我遇到了类似的问题，清理我的设备向我展示了差异。

In your development environment, delete your app from your simulators and devices. Do a clean build and run the app again. Does it still work as expected or does it now work incorrectly like in Test Flight?

Always does a delete and clean build followed by a clean install and test before submitting an app to Apple. Things get left behind during development that might not exist when a user does a clean install