视图控制器总结

/*
登陆界面——主界面——配置界面
添加按钮执行方法实现跳转，栈结构
present创建对象，跳转动画.modalTransitionStyle，入栈presentViewController
dismiss出栈dismissViewController
*/
//示例：
//a.入栈
NiuConfigViewController *config = [[NiuConfigViewController alloc]init];
config.modalTransitionStyle = UIModalTransitionStylePartialCurl;
[self presentViewController:config animated:YES completion:nil];

//b.出栈
[self dismissViewControllerAnimated:YES completion:nil];

/*
程序：
1).创建对象
2).创建导航控制器，将对象设置为导航控制器的根视图控制器
3).将导航控制器设置为程序的根视图控制器
navigationItem:title,titleView,leftBarButtonItems,rightBarButtonItem
toolbarItems
*/
//示例：
//a.入栈
NiuSecondViewController *second = [[NiuSecondViewController alloc]init];
[self.navigationController pushViewController:second animated:YES];

//b.出栈
[self.navigationController popViewControllerAnimated:YES];

//c.返回到指定页
NSArray *array = self.navigationController.viewControllers;
[self.navigationController popToViewController:array[1] animated:YES];

//d.替换指定页（fifth页面替换second页面）
NiuFifthViewController *fifth = [[NiuFifthViewController alloc]init];
NSArray *array = self.navigationController.viewControllers;
NSMutableArray *mutArray = [NSMutableArray arrayWithArray:array];
[mutArray replaceObjectAtIndex:1 withObject:fifth];
self.navigationController.viewControllers = mutArray;
[self.navigationController popToViewController:mutArray[1] animated:YES];

/*
程序：
1).创建标签控制器
2).创建多个视图控制器
3).将多个视图控制器添加到标签控制器中
UITabBarItem
*/
NiuSecondViewController *second = [[NiuSecondViewController alloc]init];
second.title = @"second";
second.tabBarItem.image = [UIImage imageNamed:@"tab_1"];
tabController.viewControllers = @[first,second,third,fourth,fifth,sixth];

/*
作用：个性化设置的需要（针对某个具体项目）
程序： 1.新建一个视图控制器，继承自UITabBarController
        2.将原标签控制器的标签栏隐藏
        3.在新建的视图控制器内部创建自定义的标签栏
            3.1：1.创建button  2.创建label 3.通过实现button的功能，完成界面跳转
        4.用自定义的标签控制器替换系统的标签控制器
*/
//示例：
NiuFirstViewController *first = [[NiuFirstViewController alloc]init];
first.title = @"first";
UINavigationController *firstNav = [[UINavigationController alloc]initWithRootViewController:first];
NiuSecondViewController *second = [[NiuSecondViewController alloc]init];
second.title = @"second";
UINavigationController *secondNav = [[UINavigationController alloc]initWithRootViewController:second];
self.viewControllers = @[firstNav,secondNav];
self.selectedIndex = 1;

//界面跳转：
self.selectedIndex = button.tag - 10;
//存值：
[[NSUserDefaults standardUserDefaults] setInteger:self.selectedIndex forKey:@"selected"];
//取值：
int mySelected = [[NSUserDefaults standardUserDefaults]integerForKey:@"selected"];