Objective c UIButton在单击时获得默认文本

当我在Interface builder上创建UIButton时，我放置了一个类似于

按钮1

的文本

启动应用程序时，我会以编程方式将文本更改为以下内容：

btn1.titleLabel.text=@"Hello";

在我按下按钮之前，一切都正常，它得到了默认文本，即

按钮1

---

我的目的是，如果文本以编程方式更改，当我按下按钮时，它无法获得其默认文本值，我的意思是文本

Hello

应该保留。请问我怎么做？Thanx prevance:）

不要直接更改文本标签，请使用setTitle:forState:代替

希望这有帮助

[myButton setTitle: @"myTitle" forState: UIControlStateNormal];

use  UIControlStateNormal to set your title.

there are couple of states that UIbuttons provide, you can have a look:

[myButton setTitle: @"myTitle" forState: UIControlStateApplication];
[myButton setTitle: @"myTitle" forState: UIControlStateHighlighted];
[myButton setTitle: @"myTitle" forState: UIControlStateReserved];
[myButton setTitle: @"myTitle" forState: UIControlStateSelected];
[myButton setTitle: @"myTitle" forState: UIControlStateDisabled];

[myButton setTitle: @"myTitle" forState: UIControlStateNormal];

use  UIControlStateNormal to set your title.

there are couple of states that UIbuttons provide, you can have a look:

[myButton setTitle: @"myTitle" forState: UIControlStateApplication];
[myButton setTitle: @"myTitle" forState: UIControlStateHighlighted];
[myButton setTitle: @"myTitle" forState: UIControlStateReserved];
[myButton setTitle: @"myTitle" forState: UIControlStateSelected];
[myButton setTitle: @"myTitle" forState: UIControlStateDisabled];