Preload signing key settings for Android in Unity3d

PreloadSigningAlias.cs

using UnityEditor;

namespace Borodar.Editor
{
    [InitializeOnLoad]
    public class PreloadSigningAlias
    {

        static PreloadSigningAlias()
        {
            PlayerSettings.Android.keystorePass = "keystore_pass";
            PlayerSettings.Android.keyaliasName = "key_alias_name";
            PlayerSettings.Android.keyaliasPass = "key_alias_pass";
        }

    }
}