How to make a refresh rate dropdown menu?

Question

I made a resolution dropdown menu and I noticed that the resolution options would duplicate. I did some research and found out that that was because of different refresh rates on the monitor. I want to know if there is any way to display the refresh rate in the resolution dropdown so that the options don't look like duplicates. Or make a separate dropdown for refresh rates.

Here is my code for the resolution:

     //.............Setting up Resolutions
     resolutions = Screen.resolutions;

     resolutionDropdown.ClearOptions();

     List<string> options = new List<string>();

     int currentResolutionIndex = 0;

     for (int i = 0; i < resolutions.Length; i++)
     {
         string option = resolutions[i].width + "x" + resolutions[i].height;
         options.Add(option);

         if (resolutions[i].width == Screen.currentResolution.width &&
                 resolutions[i].height == Screen.currentResolution.height)
         {
             currentResolutionIndex = i;
         }
     }

     resolutionDropdown.AddOptions(options);
     resolutionDropdown.value = currentResolutionIndex;
     resolutionDropdown.RefreshShownValue();
     //.............End of Setting up Resolutions

Answer 1

I see several solutions (none of them have been tested)

You can check if the option is not already in the list:

  for (int i = 0; i < resolutions.Length; i++)
  {
      string option = resolutions[i].width + "x" + resolutions[i].height;
      if(options.Contains(option))
          continue;
      options.Add(option);
      if (resolutions[i].width == Screen.currentResolution.width &&
              resolutions[i].height == Screen.currentResolution.height)
      {
          currentResolutionIndex = i;
      }
  }

You can use a Hashset

  HashSet<string> options = new HashSet<string>();
  int currentResolutionIndex = 0;
  for (int i = 0; i < resolutions.Length; i++)
  {
      string option = resolutions[i].width + "x" + resolutions[i].height;
      options.Add(option);
      if (resolutions[i].width == Screen.currentResolution.width &&
              resolutions[i].height == Screen.currentResolution.height)
      {
          currentResolutionIndex = i;
      }
  }
  resolutionDropdown.AddOptions( new List<string>(options));
  resolutionDropdown.value = currentResolutionIndex;
  resolutionDropdown.RefreshShownValue();

Use System.Linq and a custom comparer to filter the resolutions when retrieving them

 // Top of your script
 using System.Linq;
 
 public class ResolutionComparer : IEqualityComparer<Resolution>
 {
     public bool Equals( Resolution x, Resolution y )
     {
         return x.width.Equals( y.width ) && x.height.Equals( y.height );
     }
 
     public int GetHashCode( Resolution obj )
     {
         return obj.GetHashCode();
     }
 }
 
 public class YOUR_CLASS_NAME : MonoBehaviour
  {
 
         // in your function
         ResolutionComparer resolutionComparer = new ResolutionComparer();
         resolutions = Screen.resolutions.Distinct( resolutionComparer  ).ToArray();
         resolutionDropdown.ClearOptions();
         List<string> options = new List<string>();
         int currentResolutionIndex = 0;
         for ( int i = 0 ; i < resolutions.Length ; i++ )
         {
             string option = resolutions[i].width + "x" + resolutions[i].height;
             options.Add( option );
             if ( resolutionComparer.Equals(resolutions[i], Screen.currentResolution))
             {
                 currentResolutionIndex = i;
             }
         }
         resolutionDropdown.AddOptions( options );
         resolutionDropdown.value = currentResolutionIndex;
         resolutionDropdown.RefreshShownValue();
 
 
 }

How to make a refresh rate dropdown menu?

1 Reply

Your answer

Follow this Question

Related Questions