iOS中纵向和横向的屏幕方向（Objective-C）

Question

我有一种情况，我想为不同的方向（人像和风景）调用单独的方法。

例如：

If (Orientation == Portrait)
{
  Some method a;
}

Elseif (Orientation == Landscape)
{
  Some method b;
}

Answer 1

我使用[[UIApplication sharedApplication] statusBarOrientation]来了解方向。

然后我使用这个方法

if (UIInterfaceOrientationIsLandscape([[UIApplication sharedApplication] statusBarOrientation])) {
//Do something if landscape
} else {
//Do something in portrait
}

请勿使用[[UIDevice currentDevice] orientation]，因为如果设备位于桌面上，它无法正常工作。

Answer 2

    if (UIDeviceOrientationIsLandscape([UIDevice currentDevice].orientation))
    {
         // code for landscape orientation      
    }

    if (UIDeviceOrientationIsPortrait([UIDevice currentDevice].orientation))
    {
         // code for Portrait orientation       
    }

UIDeviceOrientationIsLandscape和UIDeviceOrientationIsPortrait是宏。

Answer 3

UIDeviceOrientation deviceOrientation = [[UIDevice currentDevice] orientation];
if(deviceOrientation == UIDeviceOrientationPortrait)
    ...
else  ...

枚举是UIDeviceOrientation[something]

Answer 4

尝试这个：

UIInterfaceOrientation interfaceOrientation = [[UIApplication sharedApplication] statusBarOrientation];

if（interfaceOrientation == UIInterfaceOrientationLandscapeLeft             || interfaceOrientation == UIInterfaceOrientationLandscapeRight）

    {// perform ua operation for landscape mode

}其他{

//执行纵向模式的操作 };

Answer 5

Objective-c：

-(void)viewWillTransitionToSize:(CGSize)size withTransitionCoordinator:(id<UIViewControllerTransitionCoordinator>)coordinator
{
    if (UIDevice.currentDevice.orientation == UIInterfaceOrientationPortrait) {
        printf("Portrait");
    } else {
        printf("Landscape");
    }
}