[英]Completion Block from Objective-C to Swift
我正在嘗試翻譯位於Swift的viewWillAppear函數中的completeBlock:
KeyboardHelperCompletionBlock adjustCenterUp = ^(NSNotification *notification) {
[UIView animateWithDuration:0.35f animations:^{
self.popupVC.view.centerY = self.view.centerY - [KeyboardHelper keyboardHeight] / 2;
}];
};
我有動畫部分:
UIView.animate(withDuration: 0.35, animations: {
self.popupVC?.view.center.y = self.view.centerY() - KeyboardHelper.keyboardHeight()/2
})
但不是AdjustCenterup定義。 謝謝!
只是:
let adjustCenterUp: KeyboardHelperCompletionBlock = { notification in
UIView.animate(withDuration: 0.35) {
self.popupVC?.view.center.y = self.view.centerY() - KeyboardHelper.keyboardHeight() / 2
}
}
但您可能應該虛弱地捕捉self
:
let adjustCenterUp: KeyboardHelperCompletionBlock = { [weak self] _ in
guard let `self` = self else { return }
UIView.animate(withDuration: 0.35) {
self.popupVC?.view.center.y = self.view.centerY() - KeyboardHelper.keyboardHeight() / 2
}
}
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