根据文本调整UILabel高度 [英] Adjust UILabel height depending on the text

问题描述

考虑我在 UILabel （一长串动态文本）中有以下文本：

Consider I have the following text in a UILabel (a long line of dynamic text):

由于外星人的军队远远超过了团队，玩家必须使用后启示世界的优势，例如寻求掩护在垃圾箱，柱子，汽车，瓦砾和其他物品后面。

Since the alien army vastly outnumbers the team, players must use the post-apocalyptic world to their advantage, such as seeking cover behind dumpsters, pillars, cars, rubble, and other objects.

我想调整 UILabel的高度， 。我使用 UILabel 的以下属性使文本内部换行。

I want to resize the UILabel's height so that the text can fit in. I'm using following properties of UILabel to make the text within to wrap.

myUILabel.lineBreakMode = UILineBreakModeWordWrap;
myUILabel.numberOfLines = 0;

请让我知道如果我不朝正确的方向。感谢。

Please let me know if I'm not heading in the right direction. Thanks.

推荐答案

sizeWithFont constrainedToSize：lineBreakMode： 。如何使用它的示例如下：

sizeWithFont constrainedToSize:lineBreakMode: is the method to use. An example of how to use it is below:

//Calculate the expected size based on the font and linebreak mode of your label
// FLT_MAX here simply means no constraint in height
CGSize maximumLabelSize = CGSizeMake(296, FLT_MAX);

CGSize expectedLabelSize = [yourString sizeWithFont:yourLabel.font constrainedToSize:maximumLabelSize lineBreakMode:yourLabel.lineBreakMode];   

//adjust the label the the new height.
CGRect newFrame = yourLabel.frame;
newFrame.size.height = expectedLabelSize.height;
yourLabel.frame = newFrame;

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