Give a top inset to UIRefreshControl

问题:

I use an UIRefreshControl like it (without an UITableViewController) :

UIRefreshControl *refreshControl = [UIRefreshControl new];
[refreshControl addTarget:self action:@selector(viewDidBeginRefreshing:) forControlEvents:UIControlEventValueChanged];
[self.table addSubview:refreshControl];

Problem is the refresh wheel is positioned below the UINavigationController's translucent bar (ios7). There is only a few topic on this problem on StackOverflow. And they didn't bring any valuable solution to me.

What I wish is to make my UIRefreshControl's y position 80px down for example.

Note : I know it's not recommended to use UIRefreshControl outside an UITableViewController. So no need to warn about it.

回答1:

I found a solution, very simple, not so clean but works like a charm.

Just need to put the refresh control in another subview which is set down.

UIView *refreshView = [[UIView alloc] initWithFrame:CGRectMake(0, 80, 0, 0)];
[self.table addSubview:refreshView];

UIRefreshControl *refreshControl = [UIRefreshControl new];
[refreshControl addTarget:self action:@selector(viewDidBeginRefreshing:) forControlEvents:UIControlEventValueChanged];
[refreshView addSubview:refreshControl];

回答2:

This is a version of AncAinu's answer in Swift 4.

let refreshView = UIView(frame: CGRect(x: 0, y: 80, width: 0, height: 0))
tableView.addSubview(refreshView)

refreshControl = UIRefreshControl()        
refreshControl.addTarget(self, action: #selector(self.viewDidBeginRefreshing), for: .valueChanged)        
refreshView.addSubview(refreshControl)

回答3:

Try to add this in the viewDidLoad in your UIViewController:

if ([self respondsToSelector:@selector(edgesForExtendedLayout)])
    self.edgesForExtendedLayout = UIRectEdgeNone;