iOS-UIStoryboard和UIResponder

6.17 UIStoryboard

//获取someboard中InitialViewController

UIStoryboard *story = [UIStoryboard storyboardWithName:@"someboard" bundle:nil];

self.window.rootViewController = [story instantiateInitialViewController];

//获取someboard中identity为storyboardID的控制器

UIStoryboard *story = [UIStoryboard storyboardWithName:@"someboard" bundle:nil];

self.window.rootViewController = [story instantiateViewControllerWithIdentifier:@"storyboardID"];

6.18 UIResponder

- (BOOL)becomeFirstResponder; // 成为第一响应者（文本框获得焦点并调出键盘）

- (BOOL)resignFirstResponder; // 取消第一响应者（文本框失去焦点，隐藏键盘）