How turn On/Off android display backlight using C# only in Unity3d

Question

Anybody knows how to turn On/Off android display backlight using C# only in Unity? I don't like plugins, and I don't want to make one of my own. I know that you can disable the display while using the proximity sensor... but i don't know how to do it in C# in Unity3d...

Maybe the android.provider.Settings.System.SCREEN_BRIGHTNESS will help but i don't know how to change the value (1-255) in Unity3d with C# If someone have a solution i would be very happy. thank you

here is my code.... but it doesn't work as expected... also i like to know how to set the SCREEN_BRIGHTNESS using C# and Unity... if someone has a working example script or know how to change this... plz help out... many many thx M.

 public void CheckScreenBrightness()
 {
     using (var actClass = new AndroidJavaClass("com.unity3d.player.UnityPlayer"))
     {
         var context = actClass.GetStatic<AndroidJavaObject>("SCREEN_BRIGHTNESS");
         AndroidJavaClass systemSetting = new AndroidJavaClass("android.provider.Settings$System");
  
         var screenbrightness = systemSetting.CallStatic<int>("getInt", context.Call<AndroidJavaObject>("getContentResolver"), "SCREEN_BRIGHTNESS");
        
         Debug.Log("Screen Brightness = " + screenbrightness);
     }
 }

Answer 1

Answer by Riskjockey · Mar 27, 2019 at 08:52 AM

You can control Android (and iOS) screen brightness using Dimmer: https://assetstore.unity.com/packages/tools/integration/dimmer-141555

One of our apps needed to brighten up the screen when it needed attention after sitting idle for a while, and I figured I wasn't the only one who could use this functionality so I built Dimmer. You can use it to darken the screen too, of course. And it doesn't require any extra Android permissions.

Some example code (just to show usage):

 public Dimmer dimmer;
 
 void Update()
 {
     dimmer.brightness = 0.5f; //brightness ranges from 0 - dark, to 1 - bright
 }

Hope you find it useful.

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How turn On/Off android display backlight using C# only in Unity3d

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