tabbarcontroller切换

 MyTabbarViewController *tabbar = (MyTabbarViewController *)self.tabBarController;

    OntherTabView *onter = (OntherTabView *)[tabbar.tabBarView viewWithTag:301];

    onter.titleLabel.textColor = [UIColor mycolor];

    onter.tabImage.image = [UIImage imageNamed:@"90-90 服务选中.png"];

    OntherTabView *onter1 = (OntherTabView *)[tabbar.tabBarView viewWithTag:302];

    onter1.titleLabel.textColor = [UIColor ontherTitleTextColor];

    onter1.tabImage.image = [UIImage imageNamed:@"90-90 购物车未选中.png"];

    tabbar.selectedIndex = 1;