UITabBarController *tabBarCtrl = [[UITabBarController alloc]init];
tabBarCtrl.tabBar.backgroundColor = [UIColor whiteColor];
tabBarCtrl.tabBar.tintColor = [UIColor colorWithRed:30/225.0 green:230/255.0 blue:5/255.0 alpha:0.8];
UINavigationController *nav = [[UINavigationController alloc]initWithRootViewController:tabBarCtrl];
self.window.rootViewController = nav;
//创建子控制器
mainViewController *mainVC = [[mainViewController alloc]init];
mainVC.tabBarItem.title = @"急救报警";
mainVC.tabBarItem.image = [UIImage imageNamed:@".png"];
mainVC.view.backgroundColor = [[UIColor greenColor] colorWithAlphaComponent:0.9];
mainVC.tabBarItem.selectedImage = [UIImage imageNamed:@".png"];
UIViewController *VC2 = [[UIViewController alloc]init];
VC2.tabBarItem.title = @"爱心定制";
VC2.tabBarItem.image = [UIImage imageNamed:@".png"];
UIViewController *VC3 = [[UIViewController alloc]init];
VC3.tabBarItem.title = @"亲情报告";
VC3.tabBarItem.image = [UIImage imageNamed:@".png"];
mineViewController *mineVC = [[mineViewController alloc]init];
mineVC.tabBarItem.title = @"我的";
mineVC.tabBarItem.image = [UIImage imageNamed:@".png"];
tabBarCtrl.viewControllers = @[mainVC,VC2,VC3,mineVC];
