Get all gmail accounts on android in unity

Question

I am trying to create a register and login system using google account as username and I was wondering is there a way to get all google accounts on the android device as string and put them all in an array?

the repply is very extended and so much diferent parts. You need to start checking the Google api of gmail and calling a restservice from Unity3d. But the answer is yes, there a way to do it. — joreldraw, Aug 21 '17 at 13:24

score 1 · Accepted Answer · answered Aug 21 '17 at 16:17

This answer is based on my other answer which is in Java. By using AndroidJavaClass and AndroidJavaObject, you won't need a Java code and a jar/aar plugin at-all. It will all be done from C#.

string[] getAndroidEmailAccounts()
{
    AndroidJavaClass unityPlayer = new AndroidJavaClass("com.unity3d.player.UnityPlayer");
    AndroidJavaObject currentActivity = unityPlayer.GetStatic<AndroidJavaObject>("currentActivity");

    AndroidJavaClass ACManager = new AndroidJavaClass("android.accounts.AccountManager");
    AndroidJavaObject ACManagerAct = ACManager.CallStatic<AndroidJavaObject>("get", currentActivity);

    AndroidJavaObject accounts = ACManagerAct.Call<AndroidJavaObject>("getAccountsByType", "com.google");
    AndroidJavaObject[] accountArray = AndroidJNIHelper.ConvertFromJNIArray<AndroidJavaObject[]>(accounts.GetRawObject());

    string[] accountName = new string[accountArray.Length];

    for (int i = 0; i < accountName.Length; i++)
    {
        accountName[i] = accountArray[i].Get<string>("name");
    }

    return accountName;
}

You need this permission in your manifest:

<uses-permission android:name="android.permission.GET_ACCOUNTS" />

This post describes how to use Manifest in Unity project.

Does this still work now? I tried it but it always gives me an empty string. — Jay, Jan 21 '21 at 12:22

Get all gmail accounts on android in unity

1 Answers1