什么是UIBarButtonItem的可能标题？ [英] What's UIBarButtonItem's possibleTitles for?
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问题描述
在UIKit中，UIBarButtonItem有一个名为possibleTitles的属性。怎么用？
In UIKit, UIBarButtonItem has a property called possibleTitles. How is that being used?
推荐答案
我看了文档，它说它在AccelerometerGraph演示。所以我看了一下这个演示。
I looked at the documentation and it said that it was referenced in the AccelerometerGraph demo. So I took a look at the demo.
看起来在你把它添加到栏之前，你可以设置 possibleTitles 属性为按钮可能显示的一组字符串。我假设这是按钮取最宽字符串的宽度，所以当你改变标题时，按钮的宽度不会改变。
It looks like before you add it to the bar, you can set the possibleTitles property to a set of strings that the button may display. I assume that this is so that the button takes the width of the widest string, so when you change the title the width of the button doesn't change.
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