更改Xcode中的按钮文字? [英] Change button text from Xcode?

问题描述

我有一个IBAction连接到我的界面生成器中的按钮.

I have a IBAction connected to a button in my Interface Builder.

是否可以在运行时从我的代码中更改按钮(在IB中)上的文本?

Is it possible to change the text on the button (in IB) from within my code during runtime?

推荐答案

如果您的代码中有一个与操作相关的按钮，则可以在不使用实例变量的情况下更改标题.

If you've got a button that's hooked up to an action in your code, you can change the title without an instance variable.

例如，如果按钮设置为此操作:

For example, if the button is set to this action:

-(IBAction)startSomething:(id)sender;

您可以在方法中简单地做到这一点:

You can simply do this in the method:

-(IBAction)startSomething:(id)sender {
    [sender setTitle:@"Hello" forState:UIControlStateNormal];
}

或者，如果您想切换按钮的名称，则可以创建一个名为"buttonToggled"的BOOL(例如)，并通过以下方式切换名称:

Or if you're wanting to toggle the name of the button, you can create a BOOL named "buttonToggled" (for example), and toggle the name this way:

-(IBAction)toggleButton:(id)sender {
    if (!buttonToggled) {
        [sender setTitle:@"Something" forState:UIControlStateNormal];
        buttonToggled = YES;
    }
    else {
        [sender setTitle:@"Different" forState:UIControlStateNormal];
        buttonToggled = NO;
    }
}

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