禁用UIButton不褪色或灰色 [英] Disabled UIButton not faded or grey

问题描述

在我的iPhone应用程序中，我有一个我在Interface Builder中创建的UIButton。我可以在我的代码中成功启用和禁用它...

In my iPhone app, I have a UIButton which I have created in Interface Builder. I can successfully enable and disable it like this in my code ...

sendButton.enabled = YES;

或

sendButton.enabled = NO;

然而，按钮的视觉外观总是一样的！它没有褪色或灰色。如果我尝试单击它，则会按预期启用或禁用它。我错过了什么吗？它不应该看起来褪色或灰色吗？

However, the visual look of the button is always the same! It is not faded or grey. If I attempt to click it though, it is enabled or disabled as expected. Am I missing something? Shouldn't it look faded or grey?

谢谢

推荐答案

您可以使用以下代码：

sendButton.enabled = YES;
sendButton.alpha = 1.0;

or

sendButton.enabled = NO;
sendButton.alpha = 0.5;

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