quick cocos2d新建项目，在xcode中 起模拟器，默认的是竖屏，我想做一个横屏的游戏，前面已经说了
选中你的项目，在General这个标签内，Deoployment info的这个分组，有一个Device Orientation 标签，内有一个Portrait的选项，选中是竖屏，取消选中是横屏
这里的横屏竖屏只是你显示的状态，而并非是你摆放游戏资源或者写代码按照坐标排布的横屏，这时候要设置Landscape Right,但是选中以后，就会直接崩溃
int main(int argc, char *argv[]) {
NSAutoreleasePool *pool = [NSAutoreleasePool new];
int retVal = UIApplicationMain(argc, argv, nil, @"AppController");//会崩溃在这一句
[pool release];
return retVal;
Terminating app due to uncaught exception 'UIApplicationInvalidInterfaceOrientation', reason: 'Supported orientations has no common orientation with the application, and [RootViewController shouldAutorotate] is returning YES'
libc++abi.dylib: terminating with uncaught exception of type NSException
这里的原因也已经讲清楚了，是你的初始化不支持横屏，我们需要做一个修改
在RootViewController.mm 中
// For ios6.0 and higher, use supportedInterfaceOrientations & shouldAutorotate instead
- (NSUInteger) supportedInterfaceOrientations
{
//加上这一句，然后试一下，一切 ok
return UIInterfaceOrientationMaskLandscapeLeft | UIInterfaceOrientationMaskLandscapeRight;
#ifdef __IPHONE_6_0
return UIInterfaceOrientationMaskPortrait;
#endif
}