UIView和Coco2d-x场景之间的相互跳转切换（转）

本文转自：http://cocos2d.9tech.cn/news/2013/1121/38770.html

需要注意的是：此篇为cocos2dx 2.X GLVIEW初始化方式。3.X有改动，其它实现是相同的。

首先要解释一下这篇文章要讲解的内容：我们在IOS程序中可能要添加一些用cocos2dx实现的功能的话，

那么就需要涉及到UIView和Cocos2dx场景之间的切换。那么要如何实现呢？

我们如果在xcode中新建一个cocos2dx项目，在ios文件夹中就可以发现，其实这个cocos2dx就是EAGLView，这是一个UIView。

然后这个view封装到RootViewController中；最后，这个controller在AppController中设置为window的root view controller.

1

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

17

18

19

20

21

22

23

24

25

26

27

28

29

30

31

32

33

34

35

36

37

38

- (BOOL)application:(UIApplication *)application didFinishLaunchingWithOptions:(NSDictionary *)launchOptions {

 

    // Override point for customization after application launch.

 

    // Add the view controller's view to the window and display.

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

    EAGLView *__glView = [EAGLView viewWithFrame: [window bounds]

                                     pixelFormat: kEAGLColorFormatRGBA8

                                     depthFormat: GL_DEPTH_COMPONENT16

                              preserveBackbuffer: NO

                                      sharegroup: nil

                                   multiSampling: NO

                                 numberOfSamples:0 ];

 

    // Use RootViewController manage EAGLView

    viewController = [[RootViewController alloc] initWithNibName:nil bundle:nil];

    viewController.wantsFullScreenLayout = YES;

    viewController.view = __glView;

 

    // Set RootViewController to window

    if( [[UIDevice currentDevice].systemVersion floatValue] < 6.0)

    {

        // warning: addSubView doesn't work on iOS6

        [window addSubview: viewController.view];

    }

    else

    {

        // use this method on ios6

        [window setRootViewController:viewController];

    }

     

    [window makeKeyAndVisible];

 

    [[UIApplication sharedApplication] setStatusBarHidden: YES];

 

    cocos2d::CCApplication::sharedApplication()->run();

    returnYES;

}

好了，有了上面的了解，那么我们就有办法了。

假如现在我们的要求是：程序启动，第一个视图是UIView，然后点击button，调到cocos2dx的一个场景，然后点击button还可以返回到UIView。

运行的效果是：

 

点击跳到Scene跳转到第二个图片所示的视图；点击跳到View跳回到第一个图片所示的视图。

实现过程：

（1）很明显这是两个view controller控制下的两个view视图：第一个view只包含了一个button（MyViewController）；

第二个view包含了一个cocos2dx视图和一个button（RootViewController）。

（2）所以问题就变成了这两个view之间跳转的问题了，下面我采用navigation controller来处理这二者的切换。

（3）先看看AppController.h

1

2

3

4

5

6

7

8

9

10

11

#import "MyViewController.h"

 

@interface AppController : NSObject <UIAccelerometerDelegate, UIAlertViewDelegate, UITextFieldDelegate,UIApplicationDelegate>

 

@property (nonatomic, retain) UIWindow *window;

 

@property (nonatomic, retain) UINavigationController* navController;

 

@property (nonatomic, retain)MyViewController* myController;

 

@end

然后：AppController.mm

1

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

17

18

19

20

21

22

23

24

25

26

27

28

29

- (BOOL)application:(UIApplication *)application didFinishLaunchingWithOptions:(NSDictionary *)launchOptions {

 

     

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

     

    myController = [[MyViewController alloc] init];

         

    navController = [[UINavigationController alloc] init];

    [navController pushViewController:myController animated:NO];

    navController.navigationBarHidden = YES;

 

    // Set RootViewController to window

    if( [[UIDevice currentDevice].systemVersion floatValue] < 6.0)

    {

        // warning: addSubView doesn't work on iOS6

        [window addSubview:navController.view];

    }

    else

    {

        // use this method on ios6

        [window setRootViewController:navController];

    }

 

    [window makeKeyAndVisible];

    [[UIApplication sharedApplication] setStatusBarHidden: YES];

 

//    cocos2d::CCApplication::sharedApplication()->run(); 注意暂时不可以run

    returnYES;

}

注意最后面：cocos2d::CCApplication::sharedApplication()->run(); 要注释掉，因为开的时候运行的是第一个view，

此时cocos2dx还没有跑起来。

（4）所以看看这两个视图controller：

①第一个图片所对应的MyViewController

1

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

17

- (void)viewDidLoad

{

    [superviewDidLoad];

    // Do any additional setup after loading the view.

     

    UIButton *button = [UIButton buttonWithType:UIButtonTypeRoundedRect];

    button.frame = CGRectMake(0, 100, 100, 50);

    [button setTitle:@"跳到 Scene" forState:UIControlStateNormal];

    [button addTarget:self action:@selector(buttonPressed:) forControlEvents:UIControlEventTouchUpInside];

    [self.view addSubview:button];

}

 

-(void)buttonPressed:(id)sender

{

    RootViewController* rootController = [[RootViewController alloc]init];

    [self.navigationController pushViewController:rootController animated:YES];

}

②第二个图片所对应的RootViewController

1

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

17

18

19

20

21

22

23

24

25

26

27

28

29

30

31

32

33

34

35

36

37

38

39

40

41

42

43

44

45

46

47

48

49

50

51

52

53

54

- (void)viewDidLoad {

    [superviewDidLoad];

     

    //添加一个button

    UIButton *button = [UIButton buttonWithType:UIButtonTypeRoundedRect];

    button.frame = CGRectMake(0, 400, 100, 50);

    [button setTitle:@"跳到 View" forState:UIControlStateNormal];

    [button addTarget:self action:@selector(buttonPressed:) forControlEvents:UIControlEventTouchUpInside];

    [self.view addSubview:button];

         

    [self addGLView]; //添加cocos2dx视图

     

}

 

-(void)buttonPressed:(id)sender

{

    CCDirector::sharedDirector()->end();

    [self.navigationController popViewControllerAnimated:YES];

}

 

 

-(void)addGLView

{

    UIWindow *window = [UIApplication sharedApplication].keyWindow;

    EAGLView *__glView = [EAGLView viewWithFrame: [window bounds]

                                     pixelFormat: kEAGLColorFormatRGBA8

                                     depthFormat: GL_DEPTH_COMPONENT16

                              preserveBackbuffer: NO

                                      sharegroup: nil

                                   multiSampling: NO

                                 numberOfSamples:0 ];

    [__glView setFrame:CGRectMake(0, 0, 320, 320)];

    [self.view addSubview:__glView];

    cocos2d::CCApplication::sharedApplication()->run();//这个时候就run

}

 

 

 

// Override to allow orientations other than the default portrait orientation.

// This method is deprecated on ios6

- (BOOL)shouldAutorotateToInterfaceOrientation:(UIInterfaceOrientation)interfaceOrientation {

    returnUIInterfaceOrientationIsPortrait( interfaceOrientation );

}

 

// For ios6, use supportedInterfaceOrientations & shouldAutorotate instead

- (NSUInteger) supportedInterfaceOrientations{

#ifdef __IPHONE_6_0

    returnUIInterfaceOrientationMaskPortrait;

#endif

}

 

- (BOOL) shouldAutorotate {

    returnYES;

}

好咯，主要的代码都已经贴出来了。

（5）下面再具体的看看其中关键的部分：

RootViewController

①我们创键了EAGLView的实例，作为subview添加到当前的view。而且设置它的rect为（0，0，320，320）

那么我们可以在HelloWorld 场景中：

1

2

3

//输出当前cocos2dx的size

    CCSize winSize = CCDirector::sharedDirector()->getWinSize();

    CCLog("width = %f;height = %f",winSize.width,winSize.height);

可以发现：输出的和所设置的是一致的。

② 创建EAGLView实例的代码可以直接从项目初始的AppController.mm中直接超过了，然后，注意要：

cocos2d::CCApplication::sharedApplication()->run(); 让cocos2dx跑起来。

③注意其中的屏幕方向也要设置一下（为竖向）。

④现在看看，如何从这个view调回到原来的view呢？在button的回调方法中：

1

2

3

4

5

-(void)buttonPressed:(id)sender

{

    CCDirector::sharedDirector()->end();

    [self.navigationController popViewControllerAnimated:YES];

}

很重要的是第一个语句，先结束掉当前的cocos2dx,然后再调回到原来的view。

好咯，大概的过程就是这个样子了，哥我为了这个过程，浪费了半天的时间，尤其是在cocos2dx场景如何跳转回到UIView的问题上。

原来我是想在cocos2dx的场景中的一个menu item 的回调方法中执行跳回view的功能，但是始终不能实现；

最后我想到不要cocos2dx覆盖整个视图，而是作为一个subview，然后添加一个button，直接让这个对应的controller去处理视图的跳转就可以了。

上面的跳转使用到navigation，如果不想添加这个容器的话，直接在controller之间跳转也是可以的。

下面也给出实现的代码，区别只是在于跳转的代码，其他都一样。

AppController.mm

1

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

17

18

19

20

21

22

23

24

25

26

27

28

- (BOOL)application:(UIApplication *)application didFinishLaunchingWithOptions:(NSDictionary *)launchOptions {

 

    // Override point for customization after application launch.

 

    // Add the view controller's view to the window and display.

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

     

    myController = [[MyViewController alloc] initWithNibName:nil bundle:nil];

     

    // Set RootViewController to window

    if( [[UIDevice currentDevice].systemVersion floatValue] < 6.0)

    {

        // warning: addSubView doesn't work on iOS6

        [window addSubview: myController.view];

    }

    else

    {

        // use this method on ios6

        [window setRootViewController:myController];

    }

     

    [window makeKeyAndVisible];

 

    [[UIApplication sharedApplication] setStatusBarHidden: YES];

 

//    cocos2d::CCApplication::sharedApplication()->run();

    returnYES;

}

RootViewController.mm

1

2

3

4

5

-(void)buttonPressed:(id)sender

{

    CCDirector::sharedDirector()->end();

    [self dismissViewControllerAnimated:YES completion:nil];

}

MyViewController

1

2

3

4

5

-(void)buttonPressed:(id)sender

{

    RootViewController* rootController = [[RootViewController alloc]init];

    [self presentViewController:rootController animated:YES completion:nil];

}

下面为了有需要的同志，给出navigation实现的代码下载链接：点击打开链接

下载链接：http://download.csdn.net/detail/crayon_dys/6577371

（内容只包括ios文件夹）

来自：cnblogs