【Unity】Androidアプリリンクを実装してみた

[
    {
        "relation": ["delegate_permission/common.handle_all_urls"],
        "target": {
            "namespace": "android_app",
            "package_name": "com.example.sampleapp",
            "sha256_cert_fingerprints": ["XX:XX:XX:XX:XX:XX:XX:XX:XX:XX:XX:XX:XX:XX:XX:XX:XX:XX:XX:XX:XX"]
        }
    }
]

<?xml version="1.0" encoding="utf-8"?>
<manifest xmlns:android="http://schemas.android.com/apk/res/android" xmlns:tools="http://schemas.android.com/tools">
  <application>
    <activity android:name="com.unity3d.player.UnityPlayerActivity" android:theme="@style/UnityThemeSelector" >
      <intent-filter>
        <action android:name="android.intent.action.MAIN" />
        <category android:name="android.intent.category.LAUNCHER" />
      </intent-filter>
      <intent-filter android:autoVerify="true">
        <action android:name="android.intent.action.VIEW" />
        <category android:name="android.intent.category.DEFAULT" />
        <category android:name="android.intent.category.BROWSABLE" />
        <data android:scheme="https" android:host="www.example.com" android:pathPrefix="/app/sampleapp" />
        <data android:scheme="http" />
      </intent-filter>
    </activity>
    <meta-data android:name="asset_statements" android:value='[{"include": "https://www.example.com/.well-known/assetlinks.json"}]' />
  </application>
</manifest>

public class SampleApp : MonoBehaviour
{
    void Awake()
    {
        Application.deepLinkActivated += url => {
            var code = GetCodeFromUrl(url);
            activated(code, false);
        };
        if (!string.IsNullOrEmpty(Application.absoluteURL)) {
            var code = GetCodeFromUrl(Application.absoluteURL);
            activated(code, true);
        }
    }
    private static string GetCodeFromUrl(string url)
    {
        var index = url.IndexOf("?");
        if (index < 0) return null;
        var parameters = System.Web.HttpUtility.ParseQueryString(url.Substring(index));
        return parameters["code"];
    }
    private void activated(string code, bool isStartup)
    {
        // TODO:ここにアプリリンクから起動した時の処理を実装する
    }
}

using System;
using System.Collections.Generic;
using UnityEngine;
public static class AndroidDomainState {
    private const int DOMAIN_STATE_NONE = 0;
    private const int DOMAIN_STATE_SELECTED = 1;
    private const int DOMAIN_STATE_VERIFIED = 2;

    private const string ACTION_APP_OPEN_BY_DEFAULT_SETTINGS = "android.settings.APP_OPEN_BY_DEFAULT_SETTINGS";

    public static Dictionary<string, bool> GetAllState()
    {
        var result = new Dictionary<string, bool>();
        try
        {
            using (var unityPlayer = new AndroidJavaClass("com.unity3d.player.UnityPlayer"))
            using (var currentActivity = unityPlayer.GetStatic<AndroidJavaObject>("currentActivity"))
            using (var context = currentActivity.Call<AndroidJavaObject>("getApplicationContext"))
            using (var manager = currentActivity.Call<AndroidJavaObject>("getSystemService", "domain_verification"))
            using (var userState = manager.Call<AndroidJavaObject>("getDomainVerificationUserState", context.Call<string>("getPackageName")))
            using (var map = userState.Call<AndroidJavaObject>("getHostToStateMap"))
            {
                var entries = map.Call<AndroidJavaObject>("entrySet");
                var ite = entries.Call<AndroidJavaObject>("iterator");
                while (ite.Call<bool>("hasNext"))
                {
                    var entry = ite.Call<AndroidJavaObject>("next");
                    var key = entry.Call<string>("getKey");
                    var stateValue = entry.Call<AndroidJavaObject>("getValue").Call<int>("intValue");
                    result.Add(key, stateValue != DOMAIN_STATE_NONE);
                }
            }
        }
        catch (Exception ex)
        {
            Debug.Log(ex.StackTrace);
        }
        return result;
    }

    public static void RequestLink()
    {
        try
        {
            using (var unityPlayer = new AndroidJavaClass("com.unity3d.player.UnityPlayer"))
            using (var currentActivity = unityPlayer.GetStatic<AndroidJavaObject>("currentActivity"))
            using (var context = currentActivity.Call<AndroidJavaObject>("getApplicationContext"))
            using (var uri = new AndroidJavaClass("android.net.Uri"))
            using (var intent = new AndroidJavaObject(
                "android.content.Intent",
                ACTION_APP_OPEN_BY_DEFAULT_SETTINGS,
            uri.CallStatic<AndroidJavaObject>("parse", $"package:{context.Call<string>("getPackageName")}")))
            {
                currentActivity.Call("startActivity", intent);
            }
        }
        catch (Exception ex)
        {
            Debug.Log(ex.StackTrace);
        }
    }
}