Phone camera autofocus

Question

Hey there

Making a phone app that makes use of the camera on the back of the phone. However at the moment i'm having issues with focus. Does anyone know the javascript method of doing this.

Thanks in advance

Answer 1

Answer by tanoshimi · Aug 22, 2014 at 02:32 PM

There is no way to control the focus of a hardware camera through Unity. You might be able to do it with a native plugin (see, for example, Android's FOCUS_MODE and FOCUS_DISTANCE parameters - http://developer.android.com/reference/android/hardware/Camera.Parameters.html), but this would obviously be device-specific.

Add comment · Show 7 · Share

jokim · Aug 22, 2014 at 04:32 PM 0

Share

Also important to note, not all phones actually have autofocus available.

XFaure · Sep 05, 2014 at 02:39 PM 0

Share

I am also interested in setting the auto focus of the android camera, but can't figure out how to do it. I know how to do it if I were developing a native application with the Android Studio, but not with Unity...

Could you elaborate on what you mean by "native plugin" ?

Thank you

Landern · Sep 05, 2014 at 02:42 PM 0

Share

There's documentation(Building plugins for android) for that.

Native = Java code being called from unity.

XFaure · Sep 05, 2014 at 05:37 PM 0

Share

Thank you for the hint.

However, I find this a bit strange to have to go into all this just to do something rather simple. Isn't there a way to recover the camera with the AndroidJavaClass/AndroiJavaObject once we have the UnityPlayerNativeActivity ? (In C#)

  var jc = new AndroidJavaClass("com.unity3d.player.UnityPlayer");
  var jo = jc.GetStatic<AndroidJavaObject>("currentActivity");

Something in this spirit :

 var camera = jo.CallStatic<AndroidJavaObject>("getCamera", 0);

Except this does not work, it throws the following error :

AndroidJavaException: java.lang.NoSuch$$anonymous$$ethodError: no static method with name='getCamera' signature='(I)Ljava/lang/Object;' in class Lcom/unity3d/player/UnityPlayerNativeActivity;

HamFar XFaure · Jun 09, 2017 at 02:48 PM 0

Share

Hi, Have you found an answer to this? I am working with a Unity3D app (C#) that scans a serial-number to recognise its characters (OCR) but it seems that the Android device's camera does not auto-focus, therefore the scanning (character recognition) is really bad. Can you help me; e.g. what code to go where in my C# Unity scripts, etc...? Thanks

rprrs HamFar · Jul 10, 2017 at 12:42 AM 0

Share

Hello Hamfar, do you found a solution of this? Appreciate a lot that you could help me

Show more comments

Answer 2

Answer by HamFar · Jul 13, 2017 at 06:40 AM

@rprrs I have written an adroind plug-in for unity3d, but for some reason it does not work. I am happy to share my code if anyone is interested. Perhaps you can go through it and see if you can get it to work?

Add comment · Share

Phone camera autofocus

2 Replies

Your answer

Welcome to Unity Answers

Follow this Question

Related Questions