今天遇到坑，就是在實現多點觸控時不放幾個手指到螢幕上，獲取的觸控點得個數都是1。

最終解決方案：

找到iOS檔案RootViewController.mm，新增

[eaglView setMultipleTouchEnabled:YES]

全部程式碼如下：

#import "RootViewController.h"
#import "cocos2d.h"
#import "platform/ios/CCEAGLView-ios.h"


@implementation RootViewController

/*
 // The designated initializer.  Override if you create the controller programmatically and want to perform customization that is not appropriate for viewDidLoad.
- (id)initWithNibName:(NSString *)nibNameOrNil bundle:(NSBundle *)nibBundleOrNil {
    if ((self = [super initWithNibName:nibNameOrNil bundle:nibBundleOrNil])) {
        // Custom initialization
    }
    return self;
}
*/
 


// Implement loadView to create a view hierarchy programmatically, without using a nib.
- (void)loadView {
    // Initialize the CCEAGLView
    CCEAGLView *eaglView = [CCEAGLView viewWithFrame: [UIScreen mainScreen].bounds
                                         pixelFormat: (__bridge NSString *)cocos2d::GLViewImpl::_pixelFormat
                                         depthFormat: cocos2d::GLViewImpl::_depthFormat
                                  preserveBackbuffer: NO
 

                                          sharegroup: nil
                                       multiSampling: NO
                                     numberOfSamples: 0 ];

    //將NO改為YES就可以使用多點觸控啦！
    [eaglView setMultipleTouchEnabled:YES];

    // Set EAGLView as view of RootViewController
    self
 
.view = eaglView;
}

// Implement viewDidLoad to do additional setup after loading the view, typically from a nib.
- (void)viewDidLoad {
    [super viewDidLoad];
}

- (void)viewWillAppear:(BOOL)animated {
    [super viewWillAppear:animated];
}

- (void)viewDidDisappear:(BOOL)animated {
    [super viewDidDisappear:animated];
}


// For ios6, use supportedInterfaceOrientations & shouldAutorotate instead
#ifdef __IPHONE_6_0
- (NSUInteger) supportedInterfaceOrientations{
    return UIInterfaceOrientationMaskAllButUpsideDown;
}
#endif

- (BOOL) shouldAutorotate {
    return YES;
}

- (void)didRotateFromInterfaceOrientation:(UIInterfaceOrientation)fromInterfaceOrientation {
    [super didRotateFromInterfaceOrientation:fromInterfaceOrientation];

    auto glview = cocos2d::Director::getInstance()->getOpenGLView();

    if (glview)
    {
        CCEAGLView *eaglview = (__bridge CCEAGLView *)glview->getEAGLView();

        if (eaglview)
        {
            CGSize s = CGSizeMake([eaglview getWidth], [eaglview getHeight]);
            cocos2d::Application::getInstance()->applicationScreenSizeChanged((int) s.width, (int) s.height);
        }
    }
}

//fix not hide status on ios7
- (BOOL)prefersStatusBarHidden {
    return YES;
}

- (void)didReceiveMemoryWarning {
    // Releases the view if it doesn't have a superview.
    [super didReceiveMemoryWarning];

    // Release any cached data, images, etc that aren't in use.
}


@end