UIRefreshControl and UITableView's backgroundVIew

问题

I have a UITableViewController on which I set a backgroundView. This controller has a UIRefreshControl installed. The problem is that when I set a background view, the refresh control is invisible. If I remove the background view, I can see the refresh control.

Am I doing something wrong?

回答1:

The reason for this behavior is that in iOS 7, the UITableView's backgroundView is drawn above the UIRefreshControl. Not sure if this is by design or an issue, but here is a workaround that fixed it for me :

   self.tableView.backgroundView.layer.zPosition -= 1;

This code goes where you set up your UITableViewController refreshControl property.

回答2:

You could try sending the background to the back or the refresh control to the front. The refresh control is more than likely just sitting at index 0.

回答3:

It seems that UITableViewController pushes its UIRefreshControl to back to the 0 index during reload (behind its "backgroundView"), regardless at what index you put it in the first place. This is what worked for me (iOS 9): Disable refreshing in IB. Create UIRefreshControl in code and add it to tableView after setting up backgroundView:

    let someView = UIView()

    self.tableView.backgroundView = someView

    let refreshControl = UIRefreshControl()

    refreshControl.addTarget(self, action: #selector(MyTableViewController.refresh(_:)), forControlEvents: .ValueChanged)

    self.tableView.insertSubview(refreshControl, atIndex: 1)

回答4:

This issue is easily fixed by not using the self.refreshControl property on the UITableViewController, instead create you own property for it and it will work just fine.

来源：https://stackoverflow.com/questions/18903076/uirefreshcontrol-and-uitableviews-backgroundview

标签

ios

uirefreshcontrol