问题描述
我想确保按钮文本适合 UIButton，而 UIButton 具有固定大小.
I want to make sure the button text fits into a UIButton, while the UIButton has a fixed size.
当然我可以访问 UIButton 的 titleLabel.在标签中，我会将 autoshrink 设置为似乎对应于
Of course I can access the titleLabel of the UIButton.
In a label I would set autoshrink to minimum font scale which seems to correspond to
self.myButton.titleLabel.adjustsFontSizeToFitWidth = YES;
，但实际上并不相同，因为它只会使文本水平适应边界，而不是垂直适应，因此不会改变字体大小.
, but doesn't really behave the same, since it only makes the text fits horizontally into the bounds, not vertically, thereby not changing the font size.
如何以编程方式实际调整标签的字体大小以使文本适合标签边界(如下图的目标所示)?
How can i actually adjust the font size of a label programmatically to make the text fit into the label bounds (as shown in Goal in the picture below) ?
我已经试过了
self.myButton.titleLabel.numberOfLines = 0;
self.myButton.titleLabel.minimumScaleFactor = 0.5f;
没有成功，总是以上图左侧的 adjustsFontSizeToFitWidth 结束.
without success, always ended up as in adjustsFontSizeToFitWidth on the left side of the pic above.
编辑:解决方案还必须兼容 ios7
推荐答案
self.mybutton.titleLabel.minimumScaleFactor = 0.5f;
self.mybutton.titleLabel.numberOfLines = 0; <-- Or to desired number of lines
self.mybutton.titleLabel.adjustsFontSizeToFitWidth = YES;
... 在 viewDidLoad 中 layoutIfNeeded 之后成功了事实证明，所有这些都必须设置为实际调整字体大小，而不仅仅是使其适合框架.
... did the trick, after layoutIfNeeded in viewDidLoad As it turns out, all those must be set to actually adjust the font-size, not just making it fit into the frame.
mybutton.titleLabel?.minimumScaleFactor = 0.5
mybutton.titleLabel?.numberOfLines = 0 <-- Or to desired number of lines
mybutton.titleLabel?.adjustsFontSizeToFitWidth = true
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