Xamarin.Forms 强迫横竖屏

只要在MainActivity中设置

this.RequestedOrientation = Android.Content.PM.ScreenOrientation.Portrait;//竖屏，禁止横屏

this.RequestedOrientation = Android.Content.PM.ScreenOrientation.Nosensor;//横屏，禁止竖屏
---------------------

Android:

 public void ForceLandscape()
        {
            GetActivity().RequestedOrientation = ScreenOrientation.Landscape;
        }


        public void ForcePortrait()
        {
            GetActivity().RequestedOrientation = ScreenOrientation.Portrait;
        }

 

        public Activity GetActivity()
        {
            var activity = (Activity)Forms.Context;
            return activity;
        }

IOS:

       

 public void ForceLandscape()
        {
            UIDevice.CurrentDevice.SetValueForKey(new NSNumber((int)UIInterfaceOrientation.LandscapeLeft), new NSString("orientation"));
        }


        public void ForcePortrait()
        {
            UIDevice.CurrentDevice.SetValueForKey(new NSNumber((int)UIInterfaceOrientation.Portrait), new NSString("orientation"));
        }

原文：https://blog.csdn.net/u012069227/article/details/51437345