// Gets a display metrics object for calculating display dimensions
internal static DisplayMetrics?GetDisplayMetrics(Context?context = null)
{
if (context is null)
{
context = Application.Context;
}
if (s_displayMetrics == null)
{
if (s_windowManager == null)
{
s_windowManager = context.GetSystemService(Context.WindowService)?.JavaCast <IWindowManager>();
}
if (s_windowManager == null)
{
s_displayMetrics = context.Resources?.DisplayMetrics;
}
else
{
s_displayMetrics = new DisplayMetrics();
s_windowManager.DefaultDisplay?.GetMetrics(s_displayMetrics);
}
}
return(s_displayMetrics);
}
static void EnsureMetrics(Context context)
{
if (s_displayDensity != float.MinValue)
{
return;
}
using (DisplayMetrics? metrics = context?.Resources?.DisplayMetrics)
s_displayDensity = metrics != null ? metrics.Density : 0;
}
static void EnsureMetrics(Context?context)
{
if (s_displayDensity != float.MinValue)
{
return;
}
context ??= Android.App.Application.Context;
using (DisplayMetrics? metrics = context.Resources?.DisplayMetrics)
s_displayDensity = metrics != null ? metrics.Density : 1;
}