How to make a whatsapp video call with C# Unity

Question

My Target: By pressing a button, a whatsapp video call to a specific person starts. I don't know Java well enough, so I would like to accomplish this via C# in Unity.

I tried to replicate this process by translating it into C#.

But there is something wrong, because once the button is pressed I can only access the whatsapp home.

I also added permissions to access contacts from the manifest.

I'm doing everything manually, so I pasted the script on android studio to find the _id of a specific contact that had the mimetype for whatsapp video calls.

So I tried to translate the call function via Unity's AndroidJavaClass:

Java code:

 public void videoCall(String id){
            Intent intent = new Intent();
            intent.setAction(Intent.ACTION_VIEW);

            intent.setDataAndType(Uri.parse("content://com.android.contacts/data/" + id),
                    "vnd.android.cursor.item/vnd.com.whatsapp.video.call");
            intent.setPackage("com.whatsapp");

            startActivity(intent);
}

C# code:

public static class Intentions
{
static string id = "5576";
static string data_url = "content://com.android.contacts/data/" + id;
static string type_url = "vnd.android.cursor.item / vnd.com.whatsapp.video.call";

public static AndroidJavaClass unityPlayer = new AndroidJavaClass("com.unity3d.player.UnityPlayer");
public static AndroidJavaObject currentActivity = unityPlayer.GetStatic<AndroidJavaObject> 
("currentActivity");
public static AndroidJavaObject packageManager = currentActivity.Call<AndroidJavaObject> 
("getPackageManager");
public static AndroidJavaObject intent = packageManager.Call<AndroidJavaObject> 
("getLaunchIntentForPackage", "com.whatsapp");

public static AndroidJavaClass uriClass = new AndroidJavaClass("android.net.Uri");
public static AndroidJavaObject uriData = uriClass.CallStatic<AndroidJavaObject>("parse", data_url);

public static void Launch()
{
    intent.Call<AndroidJavaObject>("setAction", "android.intent.action.VIEW");
    intent.Call<AndroidJavaObject>("setDataAndType", uriData, type_url);

    if (IsAndroid())
    {
        currentActivity.Call("startActivity", intent);
    }
}

public static bool IsAndroid()
{
#if UNITY_ANDROID && !UNITY_EDITOR
    return true;
#else
    return false;
#endif
}
}

score 0 · Answer 1 · answered Feb 10 '21 at 14:56

You actually don’t need to do a plug-in thru Java but can Use C# directly from your Unity source code. Do this to make calling WhatsApp API call via REST interface.

String number = “16696661337”;
String url = "https://api.whatsapp.com/send?phone=" + number;
/* 
mobile number is: 1-(669)666-1337, your final string will be:
https://api.whatsapp.com/send?phone=6696661337
*/
Application.OpenURL(url);

You can also send text messages too if you want to. Don’t forget to include your country code for the API to work as intended.

Thanks, unfortunately this method only allows you to reach the whatsapp contact profile, after which it will be necessary to manually press on the video call symbol to start it. I was looking for a method to reach that contact and directly initiate a video call. — Eugenio, Feb 10 '21 at 16:20

How to make a whatsapp video call with C# Unity

1 Answers1