聊天屏幕/窗口布局设计

Question

我需要关于如何做到这一点的建议(最佳实践方法)：

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我使用的是XCode 6.1.1，使用Swift并启用了自动收费。所以，在图片中，我已经设置了这样的布局。注意，在滚动视图中，我将UITableView与另一个包含UITextField的UIView放在一起。

我也已经实现了这一点：How to make a UITextField move up when keyboard is present?

这是我的密码：

func registerForKeyboardNotifications()
{
    NSNotificationCenter.defaultCenter().addObserver(self, selector: "keyboardDidShow:", name: UIKeyboardDidShowNotification, object: nil)
    NSNotificationCenter.defaultCenter().addObserver(self, selector: "keyboardDidHide:", name: UIKeyboardDidHideNotification, object: nil)
}

func keyboardDidShow(aNotification: NSNotification)
{
    var info: NSDictionary = aNotification.userInfo!
    var kbSize: CGSize = (info.objectForKey(UIKeyboardFrameBeginUserInfoKey)?.CGRectValue() as CGRect!).size

    var contentInsets: UIEdgeInsets = UIEdgeInsetsMake(0.0, 0.0, kbSize.height, 0.0)
    svBody.contentInset = contentInsets
    svBody.scrollIndicatorInsets = contentInsets

    self.view.layoutIfNeeded()
}

func keyboardDidHide(aNotification: NSNotification)
{
    var contentInsets: UIEdgeInsets = UIEdgeInsetsZero
    svBody.contentInset = contentInsets
    svBody.scrollIndicatorInsets = contentInsets

    self.view.layoutIfNeeded()
}

问题是，当我运行它，我也可以滚动我的viewBottom后面的键盘，我不想那样。

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我想要达到的目标是：

• 我需要viewBottom卡在键盘上
• 只有可以滚动的myTable

我怎么才能做到最好的方法？

Answer 1

好吧，我自己想出来的。

以下是供每个人使用的代码：

func registerForKeyboardNotifications()
{
    NSNotificationCenter.defaultCenter().addObserver(self, selector: "keyboardDidShow:", name: UIKeyboardDidShowNotification, object: nil)
    NSNotificationCenter.defaultCenter().addObserver(self, selector: "keyboardDidHide:", name: UIKeyboardDidHideNotification, object: nil)
}

func keyboardDidShow(aNotification: NSNotification)
{
    var info: NSDictionary = aNotification.userInfo!
    var kbSize: CGSize = (info.objectForKey(UIKeyboardFrameBeginUserInfoKey)?.CGRectValue() as CGRect!).size

    UIView.animateWithDuration(0.2, animations: { () -> Void in
        var contentInsets: UIEdgeInsets = UIEdgeInsetsMake(kbSize.height, 0, 0, 0)
        self.myTable.contentInset = contentInsets
        self.myTable.scrollIndicatorInsets = contentInsets

        var contentOffsetSV: CGPoint = CGPointMake(0, kbSize.height)
        self.svBody.contentOffset = contentOffsetSV

        self.view.layoutIfNeeded()
    })

}

func keyboardDidHide(aNotification: NSNotification)
{
    UIView.animateWithDuration(0.2, animations: { () -> Void in
        var contentInsets: UIEdgeInsets = UIEdgeInsetsZero
        self.myTable.contentInset = contentInsets
        self.myTable.scrollIndicatorInsets = contentInsets

        var contentOffsetSV: CGPoint = CGPointMake(0, 0)
        self.svBody.contentOffset = contentOffsetSV

        self.view.layoutIfNeeded()
    })
}

很好分享;)干杯，

禤浩焯