Xcode 9 Tableview调整大小错误

Question

I am really bummed because I just released this app to the App Store, and now that I have updated to Xcode 9, a tableview I had is now having problems. The old tableview, in iOS 10, places the cell around 100 coordinates below the top of the tableview, so I was able to add labels and stuff above the tableview, with the cells starting out below them, but then able to be scrolled under them. But now when I run the app on an ios11 simulator, it gets rid of the tableview header, but when I run it on my own phone, it does not. I have not set any code determining the header of the tableview, and this is my current code:

  myTableView.frame = CGRect(x: 0, y: 110, width: self.view.frame.width, height: self.view.frame.height - 140)

and is a photo to help visualize it: https://imgur.com/a/I4iMo

I need to get the tableview to be equal to the tableview in the iPhone 6s rather than the simulator

Answer 1

Try putting that exact line of code inside viewDidLayoutSubviews .

Put this in your ViewController.

override func viewDidLayoutSubviews() {
    super.viewDidLayoutSubviews()
    myTableView.frame = CGRect(x: 0, y: 110, width: self.view.frame.width, height: self.view.frame.height - 140)
}

It is very poor coding to deal with constant sizes like you do. You should rather create a tableHeader, or constraint a UIView above the tableView - where the height of this UIView is based on the size of its content. In your code, what happens if the user turns on bigger fonts in Accessibility? The text might grow outside your 100pt view..

If my code doesn't work, try using some of the new safeArea-variables, eg:

myTableView.frame = CGRect(x: 0, y: 110+self.view.safeAreaInsets.top, width: self.view.frame.width, height: self.view.frame.height - 140)

Play around with the safeAreaInsets until you understand what they do.