//初始化第一個(gè)頁面
FOURViewController * four = [[FOURViewController alloc]init];
four.view.backgroundColor = [UIColor yellowColor];
//設(shè)置第一個(gè)頁面的分欄標(biāo)題
four.tabBarItem.title = @"four";
//設(shè)置第一個(gè)頁面的圖分欄圖片
four.tabBarItem.image = [UIImage imageNamed:@"4"];
//
UINavigationController * theNav4 = [[UINavigationController alloc]initWithRootViewController:four];
//設(shè)置中導(dǎo)航條的背景顏色
theNav4.navigationBar.barTintColor = [UIColor redColor];
//將導(dǎo)航控制器與底部分欄控件相綁定
_tabBar.viewControllers = @[theNav1,theNav2,theNav3,theNav4];
self.window.rootViewController = _tabBar;
