ios - 更改非事件选项卡栏图标的颜色

Question

我试着改变我的标签栏项目的颜色，因为它总是在非事件状态下是灰色的，在事件状态下是蓝色的。 因此，经过一番搜索后，我尝试将这段代码写在我的所有 ViewControllers 标签栏上

 self.tabBarItem.selectedImage = [[UIImage imageNamed:@"TabBarItemMenu_tabbed.png"]
                                     imageWithRenderingMode:UIImageRenderingModeAlwaysOriginal];

    self.tabBarItem.image = [[UIImage imageNamed:@"TabBarItemMenu.png"]
                             imageWithRenderingMode:UIImageRenderingModeAlwaysOriginal];

但这对我没有帮助，我总是得到

Answer 1

您还可以这样做:

设置标签栏的tintColor属性，设置选中图标的颜色

self.tabBar.tintColor = [UIColor redColor];

然后你可以使用文本属性给文本重新着色

for (UITabBarItem *item in self.tabBar.items) {
    NSDictionary *normalState = @{UITextAttributeTextColor : [UIColor colorWithWhite:1.000 alpha:1.000],
                              UITextAttributeTextShadowColor: [UIColor clearColor],
                              UITextAttributeTextShadowOffset: [NSValue valueWithUIOffset:UIOffsetMake(0.0, 1.0)]};
    [item setTitleTextAttributes:normalState forState:UIControlStateNormal];

    NSDictionary *selectedState = @{UITextAttributeTextColor : [UIColor redColor],
                                UITextAttributeTextShadowColor: [UIColor clearColor],
                                UITextAttributeTextShadowOffset: [NSValue valueWithUIOffset:UIOffsetMake(0.0, 1.0)]};
    [item setTitleTextAttributes:selectedState forState:UIControlStateHighlighted];
}

//编辑

由于 iOS7 不推荐使用上层代码，这里更新一下:

[[UITabBarItem appearance] setTitleTextAttributes:[NSDictionary dictionaryWithObjectsAndKeys:
                                                   [UIColor whiteColor], NSForegroundColorAttributeName,
                                                   nil] forState:UIControlStateNormal];

[[UITabBarItem appearance] setTitleTextAttributes:[NSDictionary dictionaryWithObjectsAndKeys:
                                                   [UIColor redColor], NSForegroundColorAttributeName,
                                                   nil] forState:UIControlStateSelected];