UIButton：将图像设置为选定突出显示的状态

问题描述

我设置了一个图像按钮的状态正常，突出显示和选择，但当按钮处于选定状态，我按/突出显示它，我没有看到我突出显示的图像，但只是灰色的图片。
当选择按钮时，是否可以为突出显示的状态设置图像？

I set an images for button's states Normal,Highlighted and Selected, but when the button in selected state and I press/highlight it I didn't see my highlighted image but just grayed picture.Is it possible to set an image for highlighted state when the button selected?

我的代码：

[button setImage:[UIImage imageNamed:@"normal.png"] forState:UIControlStateNormal];
[button setImage:[UIImage imageNamed:@"pressed.png"] forState:UIControlStateHighlighted];
[button setImage:[UIImage imageNamed:@"checked.png"] forState:UIControlStateSelected];

：

[button setSelected:YES];

并按按钮，pressed.png图像未选择。

and press the button, the "pressed.png" image doesn't select.

推荐答案

我发现解决方案：需要添加添加行

I found the solution: need to add addition line

[button setImage:[UIImage imageNamed:@"pressed.png"] forState:UIControlStateSelected | UIControlStateHighlighted];

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