self.window=[[UIWindowalloc]initWithFrame:[[UIScreenmainScreen]bounds]];
MainViewController* vc1=[[MainViewControlleralloc]init];
MainViewController* vc2=[[MainViewControlleralloc]init];
MainViewController* vc3=[[MainViewControlleralloc]init];
MainViewController* vc4=[[MainViewControlleralloc]init];
vc1.title=@"1";
vc1.tabBarItem.image=[UIImageimageNamed:@"home"];
vc2.title=@"2";
vc2.tabBarItem.image=[UIImageimageNamed:@"home"];
vc3.title=@"3";
vc3.tabBarItem.image=[UIImageimageNamed:@"home"];
vc4.title=@"4";
vc4.tabBarItem.image=[UIImageimageNamed:@"home"];
UITabBarController* tabBar=[[UITabBarControlleralloc]init];
tabBar.viewControllers=[NSArrayarrayWithObjects:vc1,vc2,vc3,vc4,nil];
UINavigationController* navigation=[[UINavigationControlleralloc]init];
navigation.navigationBar.hidden=YES;
[navigationpushViewController:tabBaranimated:YES];
self.window.rootViewController=navigation;
[self.windowmakeKeyAndVisible];
