Is it possible to make a UIView
focusable? Or should I just use a custom UIButton
for all possible views?
I tried to override canBecomeFocused
but nothing happened.
So the problem was that I didn't notice that my cell got focus. To wrap this up, you need to implement
1) override canBecomeFocused
2) override "didUpdateFocusInContext:withAnimationCoordinator:" method to be able to highlight the cell as focused
Swift 2.3:
override func canBecomeFocused() -> Bool {
return true
}
override func didUpdateFocusInContext(context: UIFocusUpdateContext, withAnimationCoordinator coordinator: UIFocusAnimationCoordinator) {
if context.nextFocusedView == self {
coordinator.addCoordinatedAnimations({ () -> Void in
self.layer.backgroundColor = UIColor.blueColor().colorWithAlphaComponent(0.2).CGColor
}, completion: nil)
} else if context.previouslyFocusedView == self {
coordinator.addCoordinatedAnimations({ () -> Void in
self.layer.backgroundColor = UIColor.clearColor().CGColor
}, completion: nil)
}
}
Swift 3:
override var canBecomeFocused: Bool {
return true
}
override func didUpdateFocus(in context: UIFocusUpdateContext, with coordinator: UIFocusAnimationCoordinator) {
if context.nextFocusedView == self {
coordinator.addCoordinatedAnimations({ () -> Void in
self.layer.backgroundColor = UIColor.blue.withAlphaComponent(0.2).cgColor
}, completion: nil)
} else if context.previouslyFocusedView == self {
coordinator.addCoordinatedAnimations({ () -> Void in
self.layer.backgroundColor = UIColor.clear.cgColor
}, completion: nil)
}
}
It seems that things had changed and now the correct way to make a view focusable is this:
override var canBecomeFocused : Bool {
return true
}
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