在tabBarcontroller的.m文件中
+ (void)initialize
{
// 通过appearance统一设置所有UITabBarItem的文字属性
// 后面带有UI_APPEARANCE_SELECTOR的方法, 都可以通过appearance对象来统一设置
NSMutableDictionary *attrs = [NSMutableDictionary dictionary];
attrs[NSFontAttributeName] = [UIFont systemFontOfSize:12];
attrs[NSForegroundColorAttributeName] = [UIColor grayColor];
NSMutableDictionary *selectedAttrs = [NSMutableDictionary dictionary];
selectedAttrs[NSFontAttributeName] = attrs[NSFontAttributeName];
selectedAttrs[NSForegroundColorAttributeName] = [UIColor darkGrayColor];
UITabBarItem *item = [UITabBarItem appearance];
[item setTitleTextAttributes:attrs forState:UIControlStateNormal];
[item setTitleTextAttributes:selectedAttrs forState:UIControlStateSelected];
}
去除图片的蓝色渲染效果: 在传入的image时 后边加上mageWithRenderingMode:UIImageRenderingModeAlwaysOriginal
vc.tabBarItem.image = [[UIImage imageNamed:image]imageWithRenderingMode:UIImageRenderingModeAlwaysOriginal];
例如:
- (void)setupChildVc:(UIViewController *)vc title:(NSString *)title image:(NSString *)image selectedImage:(NSString *)selectedImage{
vc.navigationItem.title = title;
vc.tabBarItem.title = title;
vc.tabBarItem.image = [[UIImage imageNamed:image]imageWithRenderingMode:UIImageRenderingModeAlwaysOriginal];
vc.tabBarItem.selectedImage = [[UIImage imageNamed:selectedImage]imageWithRenderingMode:UIImageRenderingModeAlwaysOriginal];
UINavigationController * nv = [[UINavigationController alloc]initWithRootViewController:vc];
[self addChildViewController:nv];
}
