对于修改TabBar和NavigationBar全局背景颜色、字体颜色的两个方法

//全局修改UITabBar

//    TabBar 的字体颜色

//    [[UITabBar appearance]setTintColor:[UIColor blackColor]];

//    TabBar 的背景颜色

        [[UITabBarappearance]setBarTintColor:[UIColorcolorWithRed:71/255.0green:154/255.0blue:221/255.0alpha:1]];

//    [[UITabBar appearance]setBarTintColor:[UIColor whiteColor]];

    //全局修改 UINavigationBar

    //    改变之后push出来的导航字左边 <返回的颜色

     [[UINavigationBarappearance]setTintColor:[UIColorwhiteColor]];

    //    导航栏的背景颜色

//    [[UINavigationBar appearance]setBarTintColor:[UIColor whiteColor]];

    [[UINavigationBarappearance]setBarTintColor:[UIColorcolorWithRed:71/255.0green:154/255.0blue:221/255.0alpha:1]];

 TabBar上面的 文字 样式和颜色加入到字典

    NSMutableDictionary *dicTemp = [NSMutableDictionary dictionary];

    dicTemp[NSForegroundColorAttributeName] = [UIColor whiteColor];

//

//    dicTemp[NSFontAttributeName] = [UIFont systemFontOfSize:12];

    

    NSMutableDictionary *dicTempTwo = [NSMutableDictionary dictionary];

    dicTempTwo[NSForegroundColorAttributeName] = [UIColor blackColor];

//    dicTempTwo[NSFontAttributeName] = [UIFont systemFontOfSize:18];

    

//    //设置

    [childVc.tabBarItem setTitleTextAttributes:dicTemp forState:UIControlStateNormal];

    [childVc.tabBarItem setTitleTextAttributes:dicTempTwo forState:UIControlStateSelected];