iPhone:创建按下时具有不同颜色的自定义 UIBarButton？

Question

如何创建一个按下时会改变颜色的自定义 UIBarButton？现在使用普通样式，它只是突出显示，但为了获得更大胆的效果，我希望它改变颜色。我可以使用任何现有的解决方案吗？

Answer 1

我假设您在这里提到了 UINavigationBarButton。这是我所做的，它对我来说非常有效。我刚刚再次测试了它，以确定它是否有效。这正在发挥作用。

UIImage *buttonImage = [UIImage imageNamed:@"Done.png"];
UIImage *buttonImage2 = [UIImage imageNamed:@"DoneSelected.png"];
UIButton *aButton = [UIButton buttonWithType:UIButtonTypeRoundedRect];
[aButton setImage:buttonImage forState:UIControlStateNormal];
[aButton setImage:buttonImage2 forState:UIControlStateSelected];
[aButton setImage:buttonImage2 forState:UIControlStateHighlighted];
aButton.frame = CGRectMake(0.0, 0.0, buttonImage.size.width, buttonImage.size.height);
UIBarButtonItem *aBarButtonItem = [[UIBarButtonItem alloc] initWithCustomView:aButton];
[aButton addTarget:self action:@selector(navigatehome) forControlEvents:UIControlEventTouchUpInside];
self.navigationItem.rightBarButtonItem = aBarButtonItem;
[aBarButtonItem release];

希望这对您有帮助。谢谢:)