iOS 模态到一个有自定制Tabar的页面,tabbar消失的问题

问题的原因不难,问题在于怎么解决,解决方法如下:

- (void)button2{

    One * vc1 = [[Onealloc] init];

    vc1.view.backgroundColor = [UIColorcyanColor];

    Two * vc2 = [[Twoalloc] init];

    vc2.view.backgroundColor = [UIColorblueColor];

 

    MyTabbar * tab = [[MyTabbaralloc] init];

    tab.viewControllers = @[vc1,vc2];

    UIWindow* window=[UIApplicationsharedApplication].keyWindow;

    window.rootViewController = tab;

}