tabBar中tabBarItem选中颜色自定义设置

1.在storyBoard中,选中tabBarController,设置tabBar中KeyPath中的（selectedImageTintColor）如图

2. 直接代码设置

tabBarController.tabBar.selectedImageTintColor= [UIColor orangeColor];

修改tabBarItem的字体颜色:[tabBarItem setTitleTextAttributes:[NSDictionary dictionaryWithObjectsAndKeys:[UIColor redColor],NSForegroundColorAttributeName, nil] forState:UIControlStateNormal];