How to get the height of a framelayout ;

Question

Hello
I have a frame layout called gamearea;
I try to obtain its height but get 0;

protected override void OnCreate(Bundle savedInstanceState)
        {
            base.OnCreate(savedInstanceState);
            Xamarin.Essentials.Platform.Init(this, savedInstanceState);
            // Set our view from the "main" layout resource
            SetContentView(Resource.Layout.activity_main);


            gamearea.ViewTreeObserver.GlobalLayout += (sender, e) =>
            {
                float heightboard;
                heightboard = gamearea.Width * 1;
                var parameters = gamearea.LayoutParameters;
                parameters.Height = (int)heightboard;
                gamearea.LayoutParameters = parameters;
            };
            gamemanager = new Classmanagegame(8, gamearea.Height  );

When i check gamearea.Height it returns 0.

Thanks

Answer

Hello,

Welcome to our Microsoft Q&A platform!

You can try to use AddOnGlobalLayoutListener to measture height of a framelayout,

   FrameLayout gamearea = FindViewById(Resource.Id.frameLayout1);  
     gamearea.ViewTreeObserver.AddOnGlobalLayoutListener(new MyOnGlobalLayoutListenter(gamearea));

Then achieve the MyOnGlobalLayoutListenter.cs.

   internal class MyOnGlobalLayoutListenter : Java.Lang.Object, ViewTreeObserver.IOnGlobalLayoutListener  
       {  
     
           private FrameLayout frameLayout1;  
     
         
     
           public MyOnGlobalLayoutListenter(FrameLayout frameLayout1)  
           {  
               this.frameLayout1 = frameLayout1;  
           }  
     
           public void OnGlobalLayout()  
           {  
             int value= getViewHeight(frameLayout1);  
     
               Console.WriteLine("Get the height of a framelayout"+ value);  
           }  
     
           int getViewHeight(View view)  
           {  
              int WidthSpec= View.MeasureSpec.MakeMeasureSpec(0,MeasureSpecMode.Unspecified);  
              int HeightSpec = View.MeasureSpec.MakeMeasureSpec(0, MeasureSpecMode.Unspecified);  
               View.MeasureSpec.MakeMeasureSpec(0, MeasureSpecMode.Unspecified);  
               view.Measure(WidthSpec, WidthSpec);  
               int mesurewitdth=view.MeasuredHeight;  
     
               return mesurewitdth;  
           }  
       }

Best Regards,

Leon Lu

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How to get the height of a framelayout ;

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