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UIBarButtonItem flexibleSpace不起作用

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从iOS 11开始，UIBarButtonSystemItem.flexibleSpace不起作用 .

我的源代码：

let backupBtn = UIBarButtonItem(image: UIImage(named: "itemRate.png"),
                                    style: UIBarButtonItemStyle.plain,
                                    target: self,
                                    action: #selector(goToBackup))

let sortBtn = UIBarButtonItem(image: UIImage(named: "itemSize.png"),
                                  style: UIBarButtonItemStyle.plain,
                                  target: self,
                                  action: #selector(changeSort))

let sizeBtn = UIBarButtonItem(image: UIImage(named: "itemSize.png"),
                                  style: UIBarButtonItemStyle.plain,
                                  target: self,
                                  action: #selector(changeSize))

let space = UIBarButtonItem(barButtonSystemItem: UIBarButtonSystemItem.flexibleSpace,
                                target: nil,
                                action: nil)

self.navigationItem.setRightBarButtonItems([sizeBtn, space, sortBtn, space, backupBtn], animated: true)

我使用时无所谓：

  • self.navigationItem.setRightBarButtonItems

  • self.navigationItem.setLeftBarButtonItems

按钮出现在左侧或右侧， but always together!!!

xcode swift4

1 回答

  • 0

    The lame solution!

    您可以根据需要在左侧或右侧使用此解决方案：

    let space = UIBarButtonItem(barButtonSystemItem: UIBarButtonSystemItem.fixedSpace, target: nil, action: nil)

space.width = (self.view.frame.size.width/2) - (40*UIScreen.main.scale)

self.navigationItem.leftBarButtonItem = backupBtn

self.navigationItem.rightBarButtonItems = [sortBtn, space, sizeBtn]

    Horrible, I Know!

    回复于

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