Question

我有一个连接两个视图的segue。在父视图中，导航栏为灰色，在子视图中，它很清晰。展开segue时，父控制器中的导航栏现在也很清晰。如何解决这个问题？

家长控制器

  override func viewWillAppear(animated: Bool) {
    self.navigationItem.title = "FEED"
    self.navigationController?.navigationBar.barTintColor = UIColor(white:0.97, alpha:1.0)
    let navBarLineView = UIView(frame: CGRectMake(0,
        CGRectGetHeight((navigationController?.navigationBar.frame)!),
        CGRectGetWidth((self.navigationController?.navigationBar.frame)!),
        1))
    navBarLineView.backgroundColor = UIColor(red:0.91, green:0.91, blue:0.92, alpha:1.0)
    navigationController?.navigationBar.addSubview(navBarLineView)
}

儿童控制器

 override func viewWillAppear(animated: Bool) {
    self.navigationItem.title = "Space
    self.navigationController?.navigationBar.barTintColor = UIColor.whiteColor()

    navigationController!.navigationBar.setBackgroundImage(UIImage(), forBarMetrics: UIBarMetrics.Default)
    navigationController!.navigationBar.shadowImage = UIImage()
    navigationController!.navigationBar.translucent = true
}

Answer 1

当我想要恢复导航栏的默认样式时，子控制器中的nil方法中的背景和阴影图像设置为viewWillDisappear正常工作：

override func viewWillDisappear(animated: Bool) {
    navigationController!.navigationBar.setBackgroundImage(nil, forBarMetrics: UIBarMetrics.Default)
    navigationController!.navigationBar.shadowImage = nil
}

展开控制器中的导航控制器清除

1 个答案: