iOS判断当前设备旋转方向
UIDeviceOrientation 是机器硬件的当前旋转方向 这个你只能取值 不能设置
UIInterfaceOrientation 是你程序界面的当前旋转方向 这个可以设置
UIDeviceOrientation oriention = [UIDevice currentDevice].orientation; UIInterfaceOrientation interfaceOriention = (UIInterfaceOrientation)oriention; switch (interfaceOriention) { case UIInterfaceOrientationUnknown: NSLog(@"位置方向"); break; case UIInterfaceOrientationPortrait: NSLog(@"第0个旋转方向---电池栏在上"); [self shrinkScreenButtonClick]; break; case UIInterfaceOrientationPortraitUpsideDown: NSLog(@"第3个旋转方向---电池栏在下"); [self shrinkScreenButtonClick]; break; case UIInterfaceOrientationLandscapeLeft: [self fullScreenButtonClickRight]; NSLog(@"第2个旋转方向---电池栏在右"); break; case UIInterfaceOrientationLandscapeRight: [self fullScreenButtonClick]; NSLog(@"第1个旋转方向---电池栏在左"); break; default: break; } - (BOOL)shouldAutorotateToInterfaceOrientation:(UIInterfaceOrientation)interfaceOrientation { //宣告一個UIDevice指標,並取得目前Device的狀況 UIDevice *device = [UIDevice currentDevice] ; //取得當前Device的方向,來當作判斷敘述。(Device的方向型態為Integer) 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"); break; case UIDeviceOrientationLandscapeRight: NSLog(@"螢幕向右橫置"); 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; } // Return YES for supported orientations return (interfaceOrientation == UIInterfaceOrientationLandscapeLeft); // 只支持向左横向, YES 表示支持所有方向 } Portrait 表示 纵向,Landscape 表示 横向。