Question

I have the following code for letting the back button in my navigation bar stay with no text:

self.navigationController?.navigationBar.tintColor = UIColor.whiteColor()
let backItem = UIBarButtonItem(title: "", style: .Bordered, target: nil, action: nil)
    navigationItem.backBarButtonItem = backItem

This worked until i updated xCode. Now I get this error message:

'Bordered' was deprecated in iOS version 8.0: Use UIBarButtonItemStylePlain when
minimum deployment target is iOS 7.0 or later.

thanks for your help

Answer 1

Just set the style to plain. Like this

let backItem = UIBarButtonItem(title: "", style: .Plain, target: nil, action: nil)
navigationItem.backBarButtonItem = backItem

Answer 2

小心点。除iPhone 6 / 6s Plus外，此技术适用于所有设备！

这个问题的共同答案是：

self.navigationItem.backBarButtonItem = UIBarButtonItem(title: "", style: .Plain, target: nil, action: nil)

Apple的文档说使用nil代替标题：

self.navigationItem.backBarButtonItem = UIBarButtonItem(title: nil, style: .Plain, target: nil, action: nil)

这两种技术似乎都适用于所有模拟器和实际设备，除了＆＃34; iPhone plus＆＃34;。要纠正，而不是创建自己的Rects或类似的聪明，你可以为标题分配一个空格，如下：

self.navigationItem.backBarButtonItem = UIBarButtonItem(title: " ", style: .Plain, target: nil, action: nil)

我不喜欢这个答案，但确实有效。答案真的应该是将标题设置为nil，就像Apple文档一样。我无法相信这么大的公司无法对此进行测试！

Code for no text at back button at navigation bar

2 个答案: