iPhone / iPad通用应用程序方向

Question

我正在开发通用应用的应用。现在我想设置两种方式的方向当iPhone上的应用程序启动时，它以纵向模式打开，当应用程序在iPad上启动时，它将以横向模式打开。

有可能吗？

Answer 1

- (BOOL) shouldAutorotateToInterfaceOrientation:(UIInterfaceOrientation)interfaceOrientation {
    if (UI_USER_INTERFACE_IDIOM() == UIUserInterfaceIdiomPad && UIInterfaceOrientationIsLandscape(interfaceOrientation)) {
        return YES;
    } else if (UI_USER_INTERFACE_IDIOM() == UIUserInterfaceIdiomPhone && UIInterfaceOrientationIsPortrait(interfaceOrientation)) {
        return YES;
    }

    return NO;
}

Answer 2

if (UI_USER_INTERFACE_IDIOM() == UIUserInterfaceIdiomPad) {
  // The device is an iPad running iPhone 3.2 or later.
  // Rotate to landscape
}
else {
  // The device is an iPhone or iPod touch.
  // Rotate to portrait
}

“How does one get UI_USER_INTERFACE_IDOM to work with iOS 3.2?”

Answer 3

你也可以使用[UIDevice currentDevice] .model或[UIDevice currentDevice] .systemName来识别设备，然后在shouldAutoRotate方法中返回interfaceOrientation == UIInterfaceOrientationLandscapeLeft for ipad和interfaceOrientation == UIInterfaceOrientationPortrait for iphone，基于设备类型。

Answer 4

您可以通过按my answer here为您的应用代理添加一些代码来实现此目的。

Swift代码：

func application(application: UIApplication, supportedInterfaceOrientationsForWindow window: UIWindow?) -> Int {
    if UIDevice.currentDevice().userInterfaceIdiom == .Phone {
        return Int(UIInterfaceOrientationMask.Portrait.rawValue)
    } else {
        return Int(UIInterfaceOrientationMask.LandscapeLeft.rawValue | UIInterfaceOrientationMask.LandscapeRight.rawValue)
    }
}