Objective C判断设备当前的方向
UIDevice *device = [UIDevice currentDevice]; switch (device.orientation;) { case UIDeviceOrientationFaceUp: NSLog(@"螢幕朝上平躺"); break; case UIDeviceOrientationFaceDown: NSLog(@"螢幕朝下平躺"); break; //系統無法判斷目前Device的方向,有可能是斜置 case UIDeviceOrientationUnknown: NSLog(@"未知方向"); break; case UIDeviceOrientationLandscapeLeft: NSLog(@"螢幕向左橫置"); //imgView.transform = CGAffineTransformMakeRotation((CGFloat)(-90 * M_PI / 180.0)); break; case UIDeviceOrientationLandscapeRight: NSLog(@"螢幕向右橫置"); //imgView.transform = CGAffineTransformMakeRotation((CGFloat)(90 * M_PI / 180.0)); break; case UIDeviceOrientationPortrait: NSLog(@"螢幕直立"); break; case UIDeviceOrientationPortraitUpsideDown: NSLog(@"螢幕直立,上下顛倒"); break; default: NSLog(@"無法辨識"); break; }