在window上旋轉

if (toInterfaceOrientation == UIInterfaceOrientationLandscapeRight) {  
		[self.view setBounds:CGRectMake(0, 0, 1024, 768)];  
		[self.view setCenter:CGPointMake(384, 512)];  
		[self.view setTransform:CGAffineTransformMakeRotation(M_PI/2)];
		[loginView_ setCenter:CGPointMake(512, 384)];
	}else if (toInterfaceOrientation == UIInterfaceOrientationLandscapeLeft) {  
		[self.view setBounds:CGRectMake(0, 0, 1024, 768)];  
		[self.view setCenter:CGPointMake(384, 512)];  
		[self.view setTransform:CGAffineTransformMakeRotation(M_PI *1.5)];
		[loginView_ setCenter:CGPointMake(512, 384)];
	}else if (toInterfaceOrientation == UIInterfaceOrientationPortraitUpsideDown) {  
		[self.view setBounds:CGRectMake(0, 0, 768, 1024)];  
		[self.view setCenter:CGPointMake(384, 512)];  
		[self.view setTransform:CGAffineTransformMakeRotation(M_PI)];
		[loginView_ setCenter:CGPointMake(384, 512)];
	}else {
		[self.view setBounds:CGRectMake(0, 0, 768, 1024)];  
		[self.view setCenter:CGPointMake(384, 512)];  
		[self.view setTransform:CGAffineTransformMakeRotation(M_PI*2)]; 
		[loginView_ setCenter:CGPointMake(384, 512)];
	}