Question

当我添加UIToolBar时，它似乎是透明的。但是，我不希望这种情况发生。这是我的代码：

var done = UIBarButtonItem(barButtonSystemItem: UIBarButtonSystemItem.Done, target: self, action: Selector("done"))

    if let font = UIFont(name: "Avenir", size: 17.0) {
        done.setTitleTextAttributes([NSFontAttributeName: font], forState: .Normal)
    }
    toolBar.items = [done]
    toolBar.barStyle = UIBarStyle.Default
    self.birthdayTextField.inputAccessoryView = toolBar

我做错了吗？

Answer 1

自己遇到这个问题后，我发现工具栏必须用非零帧进行实例化，或者调用sizeToFit。

e.g。

    let tb = UIToolbar()
    tb.translucent = false
    tb.items = [UIBarButtonItem.init(barButtonSystemItem: UIBarButtonSystemItem.FlexibleSpace, target: nil, action: nil), UIBarButtonItem.init(title: "A button", style: .Plain, target: self, action: Selector("someAction:"))]
    tb.sizeToFit()
    userField?.inputAccessoryView = tb

或

    let tb = UIToolbar(CGRectMake(0,0,view.frame.width,44))
    tb.translucent = false
    tb.items = [UIBarButtonItem.init(barButtonSystemItem: UIBarButtonSystemItem.FlexibleSpace, target: nil, action: nil), UIBarButtonItem.init(title: "A button", style: .Plain, target: self, action: Selector("someAction:"))]
    userField?.inputAccessoryView = tb

Answer 2

为UIToolBar Transparent尝试此代码：

self.toolbar.setBackgroundImage(UIImage(),
                                forToolbarPosition: UIBarPosition.Any,
                                barMetrics: UIBarMetrics.Default)
self.toolbar.setShadowImage(UIImage(),
                            forToolbarPosition: UIBarPosition.Any)

Answer 3

这应该禁用半透明/透明效果

toolbar.translucent = false

Answer 4

试试这个

toolBar.barStyle = UIBarStyle.Black

并确保toolBar.translucent = false

Answer 5

在Xamarin（类似于swift）

toolbar.Translucent = false;
toolbar.BarTintColor = color;

UIToolBar是透明的

5 个答案: