iOS手机屏幕朝向和简单的获取屏幕方向的方法

1、对于iOS手机屏幕,苹果公司给出了一个枚举。
如:typedefNS_ENUM(NSInteger, UIDeviceOrientation) {
    UIDeviceOrientationUnknown,
    UIDeviceOrientationPortrait,           // 竖向,home键向下
    UIDeviceOrientationPortraitUpsideDown, // 竖向,home键向上
    UIDeviceOrientationLandscapeLeft,      // 横向,home键向右
    UIDeviceOrientationLandscapeRight,     // 向,home键向左
    UIDeviceOrientationFaceUp,             // 屏幕平放,向上
    UIDeviceOrientationFaceDown            // 屏幕平放,向下

}

typedef NS_ENUM(NSInteger, UIInterfaceOrientation) {

    UIInterfaceOrientationUnknown            = UIDeviceOrientationUnknown,

    UIInterfaceOrientationPortrait           = UIDeviceOrientationPortrait,

    UIInterfaceOrientationPortraitUpsideDown = UIDeviceOrientationPortraitUpsideDown,

    UIInterfaceOrientationLandscapeLeft      = UIDeviceOrientationLandscapeRight,

    UIInterfaceOrientationLandscapeRight     = UIDeviceOrientationLandscapeLeft

}

2、对于获取手机屏幕
(1) [[UIDevicecurrentDevice]beginGeneratingDeviceOrientationNotifications];
    dispatch_async(dispatch_get_main_queue(), ^{
        NSLog(@"=========%zd",[[UIDevicecurrentDevice]orientation]);
    });
    [[UIDevicecurrentDevice]endGeneratingDeviceOrientationNotifications];
(2)UIInterfaceOrientation orientation = [UIApplicationsharedApplication].statusBarOrientation;

3、对于当前手机是不是横屏或者竖屏的判断
(1)判断是否是竖屏
staticinlineBOOL UIDeviceOrientationIsPortrait(UIDeviceOrientation orientation){
    return ((orientation) ==UIDeviceOrientationPortrait || (orientation) ==UIDeviceOrientationPortraitUpsideDown);
}
(2)判断是否是横屏
staticinlineBOOL UIDeviceOrientationIsLandscape(UIDeviceOrientation orientation){
    return ((orientation) ==UIDeviceOrientationLandscapeLeft || (orientation) ==UIDeviceOrientationLandscapeRight);
}
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