更改非活动的标签栏图标的颜色

Question

我尝试更改选项卡栏项目的颜色，因为它始终在不活动状态下为灰色，在活动状态下为蓝色。 因此，经过一番搜索，我尝试将这段代码全部写入Tab栏的所有ViewController

 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

Answer 1

您还可以执行以下操作：

设置选项卡栏的tintColor属性以设置所选图标的颜色

self.tabBar.tintColor = [UIColor redColor];

然后，您可以使用文本属性为文本重新着色

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不建议使用上层代码，因此请进行以下更新：

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

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