I am working on integrating an ad provider into my app currently. I wish to place a fading message in front of the ad when the ad displays but have been completely unsuccessful.
I made a function which adds a subview to my current view and tries to bring it to the front using
[self.view bringSubviewToFront:mySubview]
The function fires on notification that the ad loaded (the notification is from the adprovider's SDK). However, my subview does not end up in front of the ad. I imagine this is made purposely difficult by the ad provider, but I wish to do it regardless. I am currently discussing with the provider whether or not this can be allowed. But for the time being, I just want to see if it's even possible.
Is there anyway I can force a subview of mine to be the top-most view such that it will not be obstructed by anything?
As far as i experienced zposition is a best way.
self.view.layer.zPosition = 1;
I had a need for this once. I created a custom UIView
class - AlwaysOnTopView
.
@interface AlwaysOnTopView : UIView
@end
@implementation AlwaysOnTopView
- (void)observeValueForKeyPath:(NSString *)keyPath ofObject:(id)object change:(NSDictionary *)change context:(void *)context {
if (object == self.superview && [keyPath isEqual:@"subviews.@count"]) {
[self.superview bringSubviewToFront:self];
}
[super observeValueForKeyPath:keyPath ofObject:object change:change context:context];
}
- (void)willMoveToSuperview:(UIView *)newSuperview {
if (self.superview) {
[self.superview removeObserver:self forKeyPath:@"subviews.@count"];
}
[super willMoveToSuperview:newSuperview];
}
- (void)didMoveToSuperview {
[super didMoveToSuperview];
if (self.superview) {
[self.superview addObserver:self forKeyPath:@"subviews.@count" options:0 context:nil];
}
}
@end
Have your view extend this class. Of course this only ensures a subview is above all of its sibling views.
try this:
self.view.layer.zPosition = 1;
In Swift 4.2
UIApplication.shared.keyWindow!.bringSubviewToFront(yourView)
Source: https://developer.apple.com/documentation/uikit/uiview/1622541-bringsubviewtofront#declarations
In c#, View.BringSubviewToFront(childView); YourView.Layer.ZPosition = 1; both should work.
Swift 2 version of Jere's answer:
UIApplication.sharedApplication().keyWindow!.bringSubviewToFront(YourViewHere)
Swift 3:
UIApplication.shared.keyWindow!.bringSubview(toFront: YourViewHere)
Swift 4:
UIApplication.shared.keyWindow!.bringSubviewToFront(YourViewHere)
Hope it saves someone 10 seconds! ;)
Let me make a conclusion. In Swift 5
You can choose to addSubview to keyWindow, if you add the view in the last. Otherwise, you can bringSubViewToFront.
let view = UIView()
UIApplication.shared.keyWindow?.addSubview(view)
UIApplication.shared.keyWindow?.bringSubviewToFront(view)
You can also set the zPosition. But the drawback is that you can not change the gesture responding order.
view.layer.zPosition = 1
Source: Stackoverflow.com