How to customize xamarin device idiom

Question

Hello ,

I want to customize device idiom so that the application considers 7-inch devices as a phone, not a tablet .

any solutions ?

Answer 1

Hello @JarvanZhang

I just found the solution
in MainActivity.cs

switch (Device.Idiom)  
            {  
               
                case TargetIdiom.Tablet:  
                {  
                    var widhtinch = Resources.DisplayMetrics.WidthPixels / Resources.DisplayMetrics.Xdpi;  
                    var heightinch = Resources.DisplayMetrics.HeightPixels / Resources.DisplayMetrics.Ydpi;  
                    var inch = Math.Sqrt(widhtinch * widhtinch + heightinch * heightinch);  
  
                    if(inch <= 7.6)   
                    {     
                         
                        Device.SetTargetIdiom(TargetIdiom.Phone);  
                        RequestedOrientation = ScreenOrientation.Portrait;  
                          
                    }  

Answer 2

Hello,​

Welcome to our Microsoft Q&A platform!

TargetIdiom Enum indicates the Phone and Tablet by the dips of the device's width. To check the inches of the running device, it needs to caculate the value in codehind. The way to get the inch of a device is different on each platform, try to get the value on each platform and then execute the code using DependencyService.

You could detect the OnSizeAllocated event of the page to perfform the work.

   protected override void OnSizeAllocated(double width, double height)  
   {  
       base.OnSizeAllocated(width, height);  
     
       var screen_inches = DependencyService.Get<ITestInterface>().getScreenSize();  
       //detect the size  
   }  

Best Regards,

Jarvan Zhang

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