// 监听键盘通知 NotificationCenter.default.addObserver(self, selector: #selector(ComposeViewController.keyboardWillChangeFrame(note:)), name: NSNotification.Name.UIKeyboardWillChangeFrame, object: nil)
//监听键盘的事件 func keyboardWillChangeFrame(note: Notification) { print(note.userInfo ?? "") // 1.获取动画执行的时间 let duration = note.userInfo?[UIKeyboardAnimationDurationUserInfoKey] as! TimeInterval // 2.获取键盘最终 Y值 let endFrame = (note.userInfo?[UIKeyboardFrameEndUserInfoKey] as! NSValue).cgRectValue let y = endFrame.origin.y //计算工具栏距离底部的间距 let margin = UIScreen.main.bounds.height - y print(margin) // 更新约束,执行动画 toolBarBottom.snp.updateConstraints { (make) in make.left.equalTo(0) make.right.equalTo(0) make.height.equalTo(44) make.bottom.equalTo(-margin) } UIView.animate(withDuration: duration) { self.view.layoutIfNeeded() } }
时间: 2024-10-11 02:04:08