关于屏幕旋转的几种情况

一、设备旋转（上苹果商店有风险）

*这种方法当在General中勾选了Device Orieation 的Protrait后再用下面代码不能设置屏幕旋转至横屏。

if ([[UIDevice currentDevice] respondsToSelector:@selector(setOrientation:)]) {

    [[UIDevice currentDevice] performSelector:@selector(setOrientation:)

withObject:(id)UIInterfaceOrientationPortrait];

}

二、视图旋转（假旋转，将当前视图旋转）

//AppCan应用引擎里边将Config.xml的属性设置为5，仅竖屏显示。<orientation>5</orientation>，将视图旋转至横屏状态，重新设置当前视图bounds值。

 [[UIApplication sharedApplication] setStatusBarOrientation:UIInterfaceOrientationPortrait];

     UIImageView * imagev = (UIImageView*)meBrwView;

     imagev.transform = CGAffineTransformMakeRotation(M_PI*2);

    CGRect frame = [UIScreen mainScreen].applicationFrame;

    NSLog(@"%f,%f,%f,%f",frame.origin.x,frame.origin.y,frame.size.height,frame.size.width);

    imagev.bounds = CGRectMake(0, 0, frame.size.width, frame.size.height);