为什么不能通过点语法更改UIButton文本? [英] Why does not work changing UIButton text via dot syntax?

问题描述

是否可以通过点语法更改UIButton标题标签文本?如果通过点语法进行操作，文本不会更改:

Is it possible to change UIButton title label text via dot syntax? The text is not changing if I do it via dot syntax:

self.myButton.titleLabel.text = [NSString stringWithString:@"Nop"];

但是这确实做到了:

[self.myButton setTitle: @"Yep" forState: UIControlStateNormal];

文本更改仅适用于纯UILabel，UIButton是特殊情况还是其他原因?

Text change works for pure UILabels, is UIButton a special case or something?

推荐答案

这是因为可以将UIButton的文本更改为几种不同的状态(正常"，突出显示"等).苹果只是选择要求使用显式代码来设置文本.如果确实需要，您可以创建一个类别来实现此目的.

This is because the text can be changed for a UIButton for several different states (Normal, Highlighted, etc). Apple simply chose to require explicit code to set the text. You could probably create a category to implement this, if you really wanted.

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