控制器的创建方式 -- 及其导航控制器的管理

• 一 控制器的创建方式

1、storyboard创建

 1 self.window = [[UIWindow alloc] initWithFrame:[UIScreen mainScreen].bounds];
 2
 3     self.window.backgroundColor = [UIColor blueColor];
 4
 5     UIStoryboard *story = [UIStoryboard storyboardWithName:@"Main" bundle:nil];
 6
 7 //    SDoneViewController *vc = [story instantiateInitialViewController];
 8
 9     SDoneViewController *VC1 = [story instantiateViewControllerWithIdentifier:@"two"];
10
11     self.window.rootViewController = VC1;
12
13
14     [self.window makeKeyAndVisible];
15
16     return YES;

2、直接创建控制器

    self.window = [[UIWindow alloc] initWithFrame:[UIScreen mainScreen].bounds];

    self.window.backgroundColor = [UIColor blueColor];

    SDoneViewController *vc = [[SDoneViewController alloc] init];

    self.window.rootViewController = vc;

    [self.window makeKeyAndVisible];

    return YES;

3、通过XIB创建控制器

elf.window = [[UIWindow alloc] initWithFrame:[UIScreen mainScreen].bounds];

    self.window.backgroundColor = [UIColor blueColor];

    SDThreeViewController *three = [[SDThreeViewController alloc] initWithNibName:@"three" bundle:nil];

    self.window.rootViewController = three;

    [self.window makeKeyAndVisible];

    return YES;