iPad开发--QQ空间,处理横竖屏布局,实现子控件中的代理

一.主界面横竖屏效果图

二.主界面加载,

初始化Dock(红色框的控件),判断程序启动时的屏幕方向.调用自己- (void)transitionToLandScape:(BOOL)isLandScape;方法,通知子控件屏幕方向改变,将此事件一直传递下去

程序运行过程中屏幕方向改变会调用- (void)viewWillTransitionToSize:(CGSize)size withTransitionCoordinator:(id<UIViewControllerTransitionCoordinator>)coordinator;(View将要过度到的尺寸) 方向改变后,同样要通知Dock,执行Dock的- (void)transitionToLandScape:(BOOL)isLandScape;屏幕方向改变,子控件同样要修改尺寸

三.Dock的初始化

Dock中的- (void)transitionToLandScape:(BOOL)isLandScape;方法中不仅要根据屏幕方向判断自己的尺寸,还要通知自己的子控件屏幕方向改变
构造方法内初始化子控件

四.Dock子控件DockBottomView以及用block实现内部按钮的点击

DockBottomView内部有三个按钮组成,竖屏时,纵向排列,横屏时横向排列构造方法中添加子控件,
- (void)transitionToLandScape:(BOOL)isLandScape方法中根据屏幕方向布局子控件
block需要传递一个参数(被点击的按钮),按钮的类型(自己定义的枚举),按钮中的tag绑定了类型,外界通过判断按钮的类型,决定下一步的代码

外界通过判断按钮类型执行的代码

 1 // block实现底部按钮的点击
 2 - (void)blockWithBottomClick
 3 {
 4     self.dock.bottomView.itemBlock = ^(UIButton *button){
 5         
 6         switch (button.tag) {
 7             case ChaosDockBottomItemTypeMood:
 8             {
 9                 ChaosMoodViewController *moodVC = [[ChaosMoodViewController alloc] init];
10                 
11                 UINavigationController *nav = [[UINavigationController alloc] initWithRootViewController:moodVC];
12                 nav.modalPresentationStyle = UIModalPresentationPageSheet;
13                 
14                 nav.modalTransitionStyle = UIModalTransitionStyleFlipHorizontal;
15                 
16                 [self presentViewController:nav animated:YES completion:nil];
17             }
18                 break;
19             case ChaosDockBottomItemTypePhoto:
20             {
21                 ChaosMoodViewController *moodVC = [[ChaosMoodViewController alloc] init];
22                 
23                 UINavigationController *nav = [[UINavigationController alloc] initWithRootViewController:moodVC];
24                 nav.modalPresentationStyle = UIModalPresentationPageSheet;
25                 
26                 nav.modalTransitionStyle = UIModalTransitionStyleFlipHorizontal;
27                 
28                 [self presentViewController:nav animated:YES completion:nil];            }
29                 break;
30             case ChaosDockBottomItemTypeBlog:
31             {
32                 ChaosMoodViewController *moodVC = [[ChaosMoodViewController alloc] init];
33                 
34                 UINavigationController *nav = [[UINavigationController alloc] initWithRootViewController:moodVC];
35                 nav.modalPresentationStyle = UIModalPresentationPageSheet;
36                 
37                 nav.modalTransitionStyle = UIModalTransitionStyleFlipHorizontal;
38                 
39                 [self presentViewController:nav animated:YES completion:nil];
40             }
41                 break;
42         }
43     };
44 }