iPad程序有一条不成文的规定：所有app必须支持屏幕旋转，至少支持180度旋转，仅仅支持一个方向的app将被无情拒绝。
目前cocos2d已经支持iPad开发，却并不支持屏幕旋转。
下面我们就利用UIController的自动旋转特性，让cocos2d支持180度旋转：
1。创建controller，且叫做TransController吧，内容如下
#import <UIKit/UIKit.h>
#define LANDSCAPE_MODE YES
@interface TransController : UIViewController {
}
@end
#import "TransController.h"
@implementation TransController
- (BOOL)shouldAutorotateToInterfaceOrientation:(UIInterfaceOrientation)interfaceOrientation {
// Overriden to allow any orientation.
if (LANDSCAPE_MODE){
if (interfaceOrientation == UIDeviceOrientationLandscapeLeft||interfaceOrientation == UIDeviceOrientationLandscapeRight) {
return YES;
}
}else {
if (interfaceOrientation == UIDeviceOrientationPortrait||interfaceOrientation == UIDeviceOrientationPortraitUpsideDown) {
return YES;
}
}
return NO;
}
- (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.
}
- (void)viewDidUnload {
[super viewDidUnload];
// Release any retained subviews of the main view.
// e.g. self.myOutlet = nil;
}
- (void)dealloc {
[super dealloc];
}
@end
#define LANDSCAPE_MODE YES 用来设定app的横竖屏模式
2。修改appdelegate
无论程序是横／竖，setDeviceOrientation都为竖屏，方向总是相对的，呵呵，即总是：
[[CCDirector sharedDirector] setDeviceOrientation:CCDeviceOrientationPortrait];
TransController *tc = [[TransController alloc] init];
tc.view.frame = window.frame;
[window addSubview:tc.view];
[[CCDirector sharedDirector] attachInView:tc.view];
tc无需释放（因为没有意义），也不可以释放（释放后将不能旋转），如果你喜欢释放的话，就在.h中定义然后dealloc中去release吧。