objective-c - 如何阻止 UIButton 的 imageView 在按下时发生变化？

Question

我有一个方法可以设置 Storyboard放置的 UIButton 的 imageView 属性。设置后，它看起来很好。但是，当按钮被点击时，它的高亮状态会将 imageView 的图像属性更改回旧图像。我该如何阻止这种情况发生？这是我的方法:

- (void)setThumbButtonPhoto:(UIImage *)image
{
   // profilePhoto is an IBOutlet property of class UIButton pointing to the 
   // UIButton on my storyboard.

   // Button image is changed correctly here
    profilePhoto.imageView.image = image;

    // But then mysteriously changed back to the old image when tapped.
    // The following commented out lines I have all tried (one at a time of course)
    // and none have solved my problem -->

    // [profilePhoto.imageView setHighlightedImage:nil];
    // profilePhoto.imageView.highlightedImage = image;
    // profilePhoto.adjustsImageWhenHighlighted = NO;
    // [profilePhoto setBackgroundImage:image forState:UIControlStateHighlighted];
    // [profilePhoto setImage:image forState:UIControlStateNormal];
    // [profilePhoto setImage:image forState:UIControlStateHighlighted];
    // [profilePhoto setImage:image forState:UIControlStateSelected];
}

Answer 1

您应该使用此方法在按钮上正确设置图像: - (void)setImage:(UIImage *)image forState:(UIControlState)state

所以:

[profilePhoto setImage:image forState:UIControlStateNormal];
[profilePhoto setImage:image forState:UIControlStateHighlighted];