更改未选中的UITabBarController项目标题和背景图像的tintColor

Question

如何更改未选中的UITabBarItem标题和背景图像iOS 8的tintColor？

未选择状态的默认颜色为浅灰色,但在我的暗色UITabBar背景上不显示

我希望我的未选择状态有[UIColor blackColor]的颜色

在我的应用程序委托内部完成了完成任务:我有

UIImage *deselectedE = [[UIImage imageNamed:@"mincraft_axe_green_32.png"] imageWithRenderingMode:UIImageRenderingModeAutomatic];
UIImage *selectedE = [[UIImage imageNamed:@"mincraft_axe_green_32.png"] imageWithRenderingMode:UIImageRenderingModeAutomatic];
e.tabBarItem =  [[UITabBarItem alloc] initWithTitle:@"Profile" image:deselectedE selectedImage:selectedE];
[[UITabBar appearance] setTintColor:[UIColor blackColor]];

Answer 1

弄清楚了!

使用它来更改文本的颜色:

[[UITabBarItem appearance] setTitleTextAttributes:@{ NSForegroundColorAttributeName : [UIColor greenColor] }
                                         forState:UIControlStateNormal];
[[UITabBarItem appearance] setTitleTextAttributes:@{ NSForegroundColorAttributeName : [UIColor blackColor] }
                                         forState:UIControlStateSelected];

并确保图像的图像渲染模式设置为ORIGINAL

UIImage *deselectedImage = [[UIImage imageNamed:@"deselectedImage"] imageWithRenderingMode:UIImageRenderingModeAlwaysOriginal];
UIImage *selectedImage = [[UIImage imageNamed:@"selectedImage"] imageWithRenderingMode:UIImageRenderingModeAlwaysOriginal];

Answer 2

在您的AppDelegate.m里面application didFinishLaunchingWithOptions:使用以下代码:

//unselected icon tint color 
[[UIView appearanceWhenContainedIn:[UITabBar class], nil] setTintColor:[UIColor redColor]];

//selected tint color 
[[UITabBar appearance] setTintColor:[UIColor greenColor]];

//text tint color 
[[UITabBarItem appearance] setTitleTextAttributes:@{ NSForegroundColorAttributeName : [UIColor whiteColor] }
                                     forState:UIControlStateNormal];

//background tint color 
[[UITabBar appearance] setBarTintColor:[UIColor blueColor]];

Answer 3

您还可以从属性检查器中将图像渲染为原始图像,而无需编写任何代码