Unity 接入Facebook
最近由于项目需要，接入Fackbook。原先的已经有登录模块了，不过是shaderSDK的，考虑到国内这些插件会对数据动手脚，只有换掉了。
回到正题，接入的过程还是遇到不少问题，先整理下我的资料，以下Fackbook都简称为FB
1.unity 5.6.5f1
2.jdk 1.8.0_144
3.SDK 25.2.5
4.fackbook 7.15.1
此外还装了
5.friebase 5.4.1(为啥会提这个，是因为FB与firebase含有共同的文件引起冲突了，这个接下来会说明)
问题1：
在初次导入FB后u3d输出提示说有文件重复了，经过排查，发现FB与firebase都含有“PlayServicesResolver”文件夹，我删掉一个就没问题了
问题2：
原先u3d的Android编译是Interal，在打包后报错如下：（截取一部分LOG）
CommandInvokationFailure: Failed to re-package resources.
D:\Program Files\android sdk\build-tools\23.0.2\aapt.exe package --auto-add-overlay -v -f -m -J "gen" -M "AndroidManifest.xml" -S "res" -I "D:/Program Files/android sdk\platforms\android-27\android.jar" -F bin/resources.ap_ --extra-packages
io.agora.gaming.unity.video:android.support.graphics.drawable.animated
:android.support.v7.appcompat
:android.support.v7.cardview
:android.support.customtabs
:android.support.compat
:android.support.coreui
:android.support.coreutils
:android.support.fragment
:android.support.mediacompat
:android.support.v4
:android.support.graphics.drawable
:com.unity.purchasing
:com.facebook.android
:com.facebook.applinks
:com.facebook.common
:com.facebook.core
:com.facebook.login
:com.facebook.marketing
:com.facebook.messenger
:com.facebook.places
:com.facebook.share
:com.android.vending.billing
:com.unity.purchasing.googleplay
:com.JieQu.games
:com.unity.udp.sdk
:com.unity.udp.udpsandbox
:com.JieQu.games.resources
:com.unity.udp.sdk.common
-S "F:\Work\BigBoss\Run\Temp\StagingArea\android-libraries\com.android.support.animated-vector-drawable-25.3.1\res"
-S "F:\Work\BigBoss\Run\Temp\StagingArea\android-libraries\com.android.support.appcompat-v7-25.3.1\res"
-S "F:\Work\BigBoss\Run\Temp\StagingArea\android-libraries\com.android.support.cardview-v7-25.3.1\res"
-S "F:\Work\BigBoss\Run\Temp\StagingArea\android-libraries\com.android.support.customtabs-25.3.1\res"
-S "F:\Work\BigBoss\Run\Temp\StagingArea\android-libraries\com.android.support.support-compat-25.3.1\res"
-S "F:\Work\BigBoss\Run\Temp\StagingArea\android-libraries\com.android.support.support-core-ui-25.3.1\res"
-S "F:\Work\BigBoss\Run\Temp\StagingArea\android-libraries\com.android.support.support-core-utils-25.3.1\res"
-S "F:\Work\BigBoss\Run\Temp\StagingArea\android-libraries\com.android.support.support-fragment-25.3.1\res"
-S "F:\Work\BigBoss\Run\Temp\StagingArea\android-libraries\com.android.support.support-media-compat-25.3.1\res"
-S "F:\Work\BigBoss\Run\Temp\StagingArea\android-libraries\com.android.support.support-v4-25.3.1\res"
-S "F:\Work\BigBoss\Run\Temp\StagingArea\android-libraries\com.android.support.support-vector-drawable-25.3.1\res"
-S "F:\Work\BigBoss\Run\Temp\StagingArea\android-libraries\common\res"
-S "F:\Work\BigBoss\Run\Temp\StagingArea\android-libraries\facebook-android-wrapper-7.15.1\res"
-S "F:\Work\BigBoss\Run\Temp\StagingArea\android-libraries\facebook-common\res"
-S "F:\Work\BigBoss\Run\Temp\StagingArea\android-libraries\facebook-login\res"
-S "F:\Work\BigBoss\Run\Temp\StagingArea\android-libraries\facebook-messenger\res"
-S "F:\Work\BigBoss\Run\Temp\StagingArea\android-libraries\facebook-share\res"
-S "F:\Work\BigBoss\Run\Temp\StagingArea\android-libraries\GoogleAIDL\res"
-S "F:\Work\BigBoss\Run\Temp\StagingArea\android-libraries\GooglePlay\res"
-S "F:\Work\BigBoss\Run\Temp\StagingArea\android-libraries\udpsandbox\res"
-S "F:\Work\BigBoss\Run\Temp\StagingArea\android-libraries\unity-android-resources\res"
-S "F:\Work\BigBoss\Run\Temp\StagingArea\android-libraries\utils\res"
stderr[
F:\Work\BigBoss\Run\Temp\StagingArea\android-libraries\com.android.support.appcompat-v7-25.3.1\res\layout\abc_action_mode_close_item_material.xml:17: note: removing attribute http://schemas.android.com/apk/res/android:layout_marginEnd from
F:\Work\BigBoss\Run\Temp\StagingArea\android-libraries\com.android.support.appcompat-v7-25.3.1\res\layout\abc_action_mode_close_item_material.xml:17: note: removing attribute http://schemas.android.com/apk/res/android:paddingStart from 主要看stderr部分，大致就是com.android.support.appcompat-v7-25.3.1的abc_action_mode_close_item_material.xml里面某个字段无法生效，去网上找相关资料后，其中的解决办法就是直接把相关的字段删除掉。
挺无奈的，看着还有将近100条的bug，只好一个个去删除了。。。
重点来了，当我全部清除后再次打包，又报错了，说我的AndroidManifest.xml文件含有违法字符"$"，经过查找字段为package="${applicationId}" ，这个符号只有在u3d编译Android为Gradle才会被识别，但工程用Internal的时候也没报错过，只好转为Gradle打包编译了，幸运的是，在转为Gradle后，问题2的报错就消失了。
解决办法：转Gradle打包
问题3
在成功打包后就开始接入fb了，目前需要接入登录与分享，这个两块我参考了https://blog.csdn.net/NRatel/article/details/84241100 的经验，我先把代码贴出来，再说说的心得
using Facebook.Unity;
using System.Collections;
using System.Collections.Generic;
using UnityEngine;
using Facebook.MiniJSON;
using System;
public class FacebookTool : MonoBehaviour
{
public static FacebookTool _FBTool;
public Action successFun = null;
public Action failFun = null;
public Action onFBShareFaild = null;
public Action onFBShareSucced = null;
[HideInInspector]
public string userName = "";
[HideInInspector]
public string email = "";
[HideInInspector]
public string headUrl = "";
[HideInInspector]
public string openId = "";
[HideInInspector]
public string gender = "";
[HideInInspector]
public string token = "";
// Use this for initialization
void Start()
{
_FBTool = this;
DontDestroyOnLoad(gameObject);
}
public void Init()
{
if (!FB.IsInitialized)
{
// Initialize the Facebook SDK
FB.Init(InitCallback, OnHideUnity);
}
else
{
// Already initialized, signal an app activation App Event
FB.ActivateApp();
}
}
private void InitCallback()
{
if (FB.IsInitialized)
{
// Signal an app activation App Event
FB.ActivateApp();
// Continue with Facebook SDK
}
else
{
Debug.LogError("Failed to Initialize the Facebook SDK");
}
}
private void OnHideUnity(bool isGameShown)
{
Debug.LogWarningFormat("Success Response: OnHideUnity Called:{0}", isGameShown);
if (!isGameShown)
{
// Pause the game - we will need to hide
}
else
{
// Resume the game - we're getting focus again
}
}
//登出
public void LogOut()
{
if (FB.IsLoggedIn)
{
FB.LogOut();
}
userName = "";
email = "";
headUrl = "";
openId = "";
gender = "";
token = "";
}
//登录
public void Login()
{
var perms = new List() { "public_profile", "email" };
FB.LogInWithReadPermissions(perms, AuthCallback);
}
private void AuthCallback(ILoginResult result)
{
if (result == null)
{
Debug.LogWarning("Null Response");
if (failFun != null)
failFun();
return;
}
var LastResponse = "";
// Some platforms return the empty string instead of null.
if (!string.IsNullOrEmpty(result.Error))
{
LastResponse = "Error Response: " + result.Error;
if (failFun != null)
failFun();
}
else if (result.Cancelled)
{
LastResponse = "Cancelled Response: " + result.RawResult;
if (failFun != null)
failFun();
}
else if (!string.IsNullOrEmpty(result.RawResult))
{
LastResponse = "Success Response: " + result.RawResult;
if (result.AccessToken != null)
{
var AccessToken = result.AccessToken;
token = AccessToken.TokenString;
}
GetMyInfo();
}
else
{
if (failFun != null)
failFun();
LastResponse = "Empty Response";
}
Debug.LogWarning(LastResponse);
}
//获取个人信息，在登录成功后执行
public void GetMyInfo()
{
FB.API("me?fields=id,name,gender,picture,email", HttpMethod.GET, (result) =>
{
ReadJsonInfo(result.RawResult);
});
}
public void ReadJsonInfo(string jsonString)
{
Debug.LogWarning(jsonString);
var dict = Json.Deserialize(jsonString) as Dictionary;
if (dict.ContainsKey("name"))
{
userName = dict["name"].ToString();
}
if (dict.ContainsKey("id"))
{
openId = dict["id"].ToString();
}
if (dict.ContainsKey("gender"))
{
gender = dict["gender"].ToString();
}
if (dict.ContainsKey("email"))
{
email = dict["email"].ToString();
}
if (dict.ContainsKey("picture"))
{
var picture = dict["picture"] as Dictionary;
if (picture.ContainsKey("data"))
{
var pictureData = picture["data"] as Dictionary;
if (pictureData.ContainsKey("url"))
{
headUrl = pictureData["url"].ToString();
}
}
}
if (successFun != null)
successFun();
//Debug.LogFormat("userName:{0} , userID:{1} userGender:{2} userUrl:{3}", userName, openId, gender, headUrl);
}
public void FBShare(Uri uri, string contentTitle, string contentDesc, Uri picUri)
{
//uri = new Uri("https://play.google.com/store/apps/details?id=com.dominosamgong.poker");
FB.ShareLink(uri, contentTitle, contentDesc, picUri, (result) =>
{
if (result.Cancelled || !String.IsNullOrEmpty(result.Error))
{
Debug.Log("ShareLink Faild");
if (onFBShareFaild != null)
{
Debug.LogError(result.Error);
onFBShareFaild();
}
}
else
{
Debug.Log("ShareLink success!");
if (onFBShareSucced != null)
{
var postID = String.IsNullOrEmpty(result.PostId) ? "" : result.PostId;
onFBShareSucced();
}
}
});
}
}
FB初始化不必说明了，就几行。
登录时需要用的函数FB.LogInWithReadPermissions(perms, AuthCallback);
传入的参数perms有好几种，因为我这边需要获得用户的ID，名字，性别，照片url，邮箱等等。官网上说明需要传入特定的参数，并对app进行审查，实际操作过程中发现不需要。就用默认的"public_profile", "email"
而获取个人信息需要在登录后再调用FB.API()就行了。参数及具体的用法可以参考这个https://developers.facebook.com/tools/explorer
用于检测自己传入的参数是否正确。
FB在获取用户信息回传时数据类型是JSON的，关于解析的方式参考这个https://developers.facebook.com/docs/unity/reference/current/Json
我根据他写的教程自己也整了个，因为获取的字段都是固定的，所以我就写死了
问题4
此为u3d中FB的分享API
public static void ShareLink(Uri contentURL = null, string contentTitle = "", string contentDescription = "", Uri photoURL = null, FacebookDelegate callback = null); 字面上看着说都可以传空参数，打包实测时发现报错了，说我的没有传入标题与内容。于是就传入contentTitle 与contentDescription，再次打包，发现还是同样的错误？？这就纳闷了，接着我把两个url地址也传进去，都为百度首页地址。
实测时发现不会报错了，但又有新的问题，我所传入的contentTitle 与contentDescription内容并没有看到，取而代之的是标题与内容竟然是“www.baidu.com”与“百度”.。接下来试着去掉photoURL，contentTitle ，contentDescription，只传入contentURL。实测发现木有问题，和上次的现象一模一样，由此推测FB中u3d分享api仅仅只有contentURL生效了，其他3个都不需要。在官方上查询相关api时发现牛头不对马嘴，实实在在被坑了一把。。。
解决办法：只有contentURL有效，其他三个没有用处
问题5
关于Key Hash，如果手机没装FB的APP，是可以正常分享的，在装了FB之后，分享会报错，内容如下：
error: Invalid key hash. The【key hash】 does
not match any stored key hashes. Configure your app key hashes at https://developers.facebook.com/apps/(游戏的appid)/
将提示的Key hash 配到后台即可。