UNITY_iOS_接入微信登录及分享微信

一、准备工作

开发环境：

Xcode版本：12.4

Unity版本：2018.3.0f2

1.首先配置应用的Universal Links

Universal Links介绍

Universal Link（通用链接）是苹果在iOS9推出的，一种能够方便使用的通过传统https链接来启动App的功能，可以使用相同的网址打开网址和App.

看起来就是一条不同的额https链接，当然是我们在该链接域名根目录配置的一个链接，也可以在该链接中放置对应的H5页面。当用户点击该链接，只要手机中安装了支持该链接的App就会直接进入到App中。如果没有安装啊App则会跳转到Safar浏览器中，展示H5页面，对用户来说则是一个无缝跳转的过程。

配置Universal Links

其实配置很简单，但是遇到的坑很多。微信对Universal links配置要求

1、Universal Links必须支持https请求

2、Universal Links配置的paths不能带query参数

3、微信使用Uniersal Links拉起第三方App时，会在Universal Links末尾拼接路径和参数，因此App配置的paths必须加上通配符/*

配置JSON文件

创建一个空白文件（必须是纯文本，命名为apple-app-site-association,去除后缀名）。建议让后台人员在其本地创建，避免文件传输时，文件自动被更改格式，后缀自动添加等问题。
Universral Links示例：文件名 apple-app-site-association

{"applinks": {"apps": [],"details": [{"appID": "Team ID.Bundle Identifier","paths": ["*"]}]}
}

说明：
1、Team ID表示苹果账号的团队ID, Bundle Identifier表示项目的BundleID (包名)

2、appID中的Team ID可以通过苹果开发平台->左菜单Membership-> 找到Team ID值：如128LGFR841。Xcode12.4的Team ID可以在这里查看

3、appID的Bundle Identifier可以在Unity或Xcode打开项目Bundle Identifiler中找到，如com.xxx.xxx.(Unity 项目的包名)

4.结合起来appID就是 128LGFR841.com.xxx.xxx

5、paths可默认通配符*

6、配置好Universal Links后把 apple-app-site-association文件放置到服务器的根目录或者.well-known子目录下（后台人员知道注意：必须要放在带有https域名的服务器下）。然后让后台提供一个https的url地址。格式是“正式域名/apple-app-site-association”,如：https://www.baidu.com/apple-app-site-association。
达到的效果是浏览器打开这个地址，就可以下载这个文件，另外GET请求这个地址返回文件是Json内容。这里通过谷歌浏览器的Postman经行实验

注意返回的数据不能存在乱码否则说明JSON文件有问题

微信开放平台配置

在微信开放平台配置IOS平台开发信息参数：前提是你自己已经在微信开放平台审核通过你的appid

二、导入核心微信SDK开发工具包——登录

1、iOS开发工具包下载
2、主要包括libWeChatSDK.a,WXApi.h,WXApiObject.h三个。
3、把这三个放到Unity项目->Plugins->iOS文件夹下即可

三、核心唤起登录和反馈代码

1.在Plugins/iOS文件夹新建WXApiManager文件夹在该文件夹下新建 WXApiManager.h头文件

//  WXApiManager.h
#import <Foundation/Foundation.h>
#import "Libraries/Plugins/iOS/WXApi.h"
NS_ASSUME_NONNULL_BEGIN
@interface WXApiManager : UIResponder<UIApplicationDelegate, WXApiDelegate>
+ (instancetype)shareManager;
@end
NS_ASSUME_NONNULL_END

2.在Plugins/iOS/WXApiManager文件夹下新建WXApiManager.mm文件

//  WXApiManager.m
#import "WXApiManager.h"
@implementation WXApiManager
+(instancetype) shareManager
{static dispatch_once_t onceToken;static WXApiManager *instance;dispatch_once(&onceToken, ^{instance = [[WXApiManager alloc] init];});return instance;
}
// 微信发送请求到第三方应用时，会回调到该方法
-(void) onReq:(BaseReq *)req {}
// 第三方应用发送到微信的请求处理后的响应结果，会回调到该方法
-(void) onResp:(BaseResp *)resp
{NSLog(@"微信响应");if([resp isKindOfClass:[SendAuthResp class]]){SendAuthResp *temp = (SendAuthResp*)resp;int errorCode = temp.errCode;switch (errorCode) {case 0:{printf("登录成功-xcode");NSLog(@"code %@",temp.code);NSString *message = [NSString stringWithFormat:@"%@",temp.code];const char* codeInfo = [message cStringUsingEncoding:NSASCIIStringEncoding];OnShowMessage(codeInfo);//登录成功 将code发送给Unity break;}case -2:printf("用户取消");OnShowMessage("-2;用户取消");break;case -4:printf("用户拒绝授权");OnShowMessage("-4;用户取消");break;default:printf("登录失败");OnShowMessage("-1;登录失败");break;}}//微信分享授权回调else if([resp isKindOfClass:[SendMessageToWXResp class]]){//0成功，-2是取消，其他异常SendMessageToWXResp *rresp = (SendMessageToWXResp*)resp;NSString *code = [NSString stringWithFormat:@"%d",rresp.errCode];const char* codeInfo = [code cStringUsingEncoding:NSASCIIStringEncoding];OnShareShowMessage(codeInfo);}
}//防止内存泄漏，崩溃，这里进行参数转换
char* MakeStringCopy(const char* string){if(string == NULL){return NULL;}char* res = (char*)malloc(strlen(string)+1);strcpy(res, string);return res;
}
//信息提示
void OnShowMessage(const char* msg)
{//将消息发送给UnityUnitySendMessage("WeChatComponent", "LogonCallback", MakeStringCopy(msg));
}void OnShareShowMessage(const char* msg)
{UnitySendMessage("WeChatComponent", "LogonCallback", MakeStringCopy(msg));
}
@end

3、Unity 与iOS交互文件，同样在Plugins/iOS文件夹下新建Native.h头文件


#include "UI/UnityViewControllerBase.h"
#include "UnityAppController+ViewHandling.h"
@interface Native:NSObject
@end
extern "C"
{void _WechatLogin(char* appid,char* message);
bool _isWechatInstalled();
void _ShareByIos(int type, char* url);
}

4、unity与iOS交互文件同样在Plugins/iOS文件夹下新建Native.mm文件
注：微信官网分享API入口
// 微信SDK注册，universal link
[WXApi registerApp:APP_ID universalLink: UNIVERSAL_LINK];

补充说明：
如果后台提供的url地址是https://www.baidu.com/apple-app-site-association。那么，
代码注册方法及微信开放平台中都填https://www.baidu.com/，

//
//  Native.mm
//  iosPlugins
//
//  Created by os on 2020/4/10.
//  Copyright © 2020 os. All rights reserved.
//
#import <Foundation/Foundation.h>
#import "Native.h"
#import "Libraries/Plugins/iOS/WXApi.h"
@interface Native()
@end
@implementation Native : NSObject//判断是否安装微信
bool _isWechatInstalled()
{return [WXApi isWXAppInstalled];
}//微信登录
void _WechatLogin(char* appid,char* message)
{//向微信注册appid:填写自己微信开放平台的appid信息NSString *weichatId = [NSString stringWithFormat:@"%s", appid];NSString *UNIVERSAL_LINK = [NSString stringWithFormat:@"%s", "对应申请微信平台上的Universal Links"];[WXApi registerApp:weichatId universalLink:UNIVERSAL_LINK];if([WXApi isWXAppInstalled] ==false){NSLog(@"请先安装微信客户端");return;}//登录SendAuthReq* req = [[SendAuthReq alloc] init];req.scope = @"snsapi_userinfo";req.state = [NSString stringWithFormat:@"%s", message];//[WXApi sendReq:req];[WXApi sendReq:req completion:^(BOOL success) { NSLog(@"唤起微信:%@", success ? @"成功" : @"失败");  }];
}
//分享图片类型接口示例
//参数：type表示分享类型（0：分享某个好友聊天；1：分享到微信朋友圈）
//参数：url为图片本地地址，当然也可以用远程地址然后下载下来。
//具体分享其他类型（如文宇类型，音乐类型，视频类型可参考微信官网API）
void _ShareByIos(int type, char* url)
{NSString *sharePicUrl = [NSString stringWithFormat:@"%s", url];//UIImage *image = [UIImage imageNamed:sharePicUrl];//NSData* imageData = UIImageJPEGRepresentation(image, 0.7);WXImageObject *imageObject = [WXImageObject object];imageObject.imageData = [NSData dataWithContentsOfFile:sharePicUrl];WXMediaMessage *message = [WXMediaMessage message];[message setThumbImage:[UIImage imageNamed:@"xzqShare.png"]];message.mediaObject = imageObject;SendMessageToWXReq *req = [[SendMessageToWXReq alloc] init];req.bText = NO;req.message = message;req.scene = type ==0? WXSceneSession : WXSceneTimeline;//0表示聊天，1，表示朋友圈[WXApi sendReq:req completion:^(BOOL success) { NSLog(@"微信分享:%@", success ? @"成功" : @"失败");  }];}
@end

5、接下来就是Unity代码调用这块
把下面的代码挂在到名称为WeChatComponent的物体上可以自己改

//判断微信是否安装[DllImport("__Internal")]private static extern bool _isWechatInstalled();[DllImport("__Internal")]private static extern void _WechatLogin(string appid,string state);public void SendWxLogin(){bool isInstalled = false;string wx_appid = PublicEntity.WX_APP_ID;string state = PublicEntity.STATE;
#if !UNITY_EDITOR
#if UNITY_IOSisInstalled = _isWechatInstalled();
#endif
#endifif (isInstalled){#if !UNITY_EDITOR
#if UNITY_IOS_WechatLogin(wx_appid,state);
#endif
#endif}else{PublicUtils.ShowAndroidToastMessage("请先安装微信客户端！");}}/// <summary>/// 登录回调/// </summary>/// <param name="msg"></param>public void LogonCallback(string msg){Debug.log(msg);}

微信分享代码段

    private int shareType = 0;//分享类型，0:表示分享到聊天；1：表示分享到朋友圈UnityWebRequest webRequest;[DllImport("__Internal")]private static extern void _ShareByIos(int type, string url);/// <summary>/// 图片类型分享至微信/// </summary>/// <param name="_type">0:表示分享到聊天；1：表示分享到朋友圈</param>private void OnShareWXByIOS(int _type){shareType = _type;StartCoroutine(savePicToShare());}IEnumerator savePicToShare(){string sharePicUrl = PublicEntity.HTTP_SERVICE_URL + "uploadFiles/res/sharePic/sharePic.png";webRequest = UnityWebRequest.Get(sharePicUrl);webRequest.timeout = 30;//设置超时，若webRequest.SendWebRequest()连接超时会返回，且isNetworkError为trueyield return webRequest.SendWebRequest();if (webRequest.isNetworkError){Debug.Log("Download Error:" + webRequest.error);}else{//获取二进制数据var File = webRequest.downloadHandler.data;//创建文件写入对象FileStream nFile = new FileStream(PublicEntity.localPicUrl, FileMode.Create);//写入数据nFile.Write(File, 0, File.Length);nFile.Close();_ShareByIos(shareType, PublicEntity.localPicUrl);}}/// <summary>/// 分享回调/// </summary>/// <param name="msg"></param>public void ShareCallBack(string msg){if (msg != null && msg != ""){switch (msg){case "-2":PublicUtils.ShowAndroidToastMessage("分享已取消");break;case "0":PublicUtils.ShowAndroidToastMessage("分享成功");break;default:PublicUtils.ShowAndroidToastMessage("分享失败");break;}}else{PublicUtils.ShowAndroidToastMessage("分享失败");}}

6、接下来就是到导出unity ios项目剩下的就是在xcode里面配置
1->在"TARGETS"一栏，在“info”变迁栏的“URL Types”添加URL scheme

2.->在"TARGETS"一栏，在“info”变迁栏的“Custom iOS Target Properties”添加"LSApplicationQueriesSchemes"

3.->在"Signing & Capabilities"一栏，添加Associated Domains
补充说明：
如果后台提供的url地址是https://www.baidu.com/apple-app-site-association。那么，
Associated Domains中填写applinks:www.baidu.com，

4.->在"Build Phases"一栏，添加依赖包
主要添加；（可根据需求经行删除）

CoreTelephony.framework
Security.framework
CFNetwork.framework
WebKit.framework
SystemConfiguration.framework
libWeChatSDK.a

5.->在"Build Settings"一栏，Linking—>添加-Objc和-all_load

6.->接下来就是实现回调部分

找到UnityAppController.mm文件

1.首先导入包
#import “Libraries/Plugins/iOS/WXApi.h” //微信API依赖的文件
#import “Libraries/Plugins/iOS/WXApiManager/WXApiManager.h”//这是微信登录回调用的头文件

2.接下来就是修改openURL

// UIApplicationOpenURLOptionsKey was added only in ios10 sdk, while we still support ios9 sdk
- (BOOL)application:(UIApplication*)app openURL:(NSURL*)url options:(NSDictionary<NSString*, id>*)options
{id sourceApplication = options[UIApplicationOpenURLOptionsSourceApplicationKey], annotation = options[UIApplicationOpenURLOptionsAnnotationKey];NSMutableDictionary<NSString*, id>* notifData = [NSMutableDictionary dictionaryWithCapacity: 3];if (url) notifData[@"url"] = url;if (sourceApplication) notifData[@"sourceApplication"] = sourceApplication;if (annotation) notifData[@"annotation"] = annotation;AppController_SendNotificationWithArg(kUnityOnOpenURL, notifData);//return YES; 将返回值修改成[WXApi handleOpenURL:url delegate:[WXApiManager shareManager]] 就行NSLog(@"oepnURL33333...........");return [WXApi handleOpenURL:url delegate:[WXApiManager shareManager]];
}

到这里就基本上结束了，剩下就是在真机上测试。
7.也可以在Unity->Editor文件下新建IosAutoBuild脚本，把一些Xcode的配置绑定好这样就不用我们手动去设置了


using UnityEditor;
using UnityEditor.Callbacks;
using UnityEditor.iOS.Xcode;
using System.IO;public class IosAutoBuild
{[PostProcessBuild(9999)]public static void OnPostProcessBuild(BuildTarget target, string pathToBuildProject){if (target != BuildTarget.iOS)return;string projPath = pathToBuildProject + "/Unity-iPhone.xcodeproj/project.pbxproj";PBXProject proj = new PBXProject();proj.ReadFromFile(projPath);string targetGuid = proj.TargetGuidByName("Unity-iPhone");//添加Other Linker Flagsproj.AddBuildProperty(targetGuid, "Other Link Flags", "-Objc -all_load -framework CoreTelephony");//修改部分设置proj.SetBuildProperty(targetGuid, "ENABLE_BITCODE", "NO");//添加代码库proj.AddFileToBuild(targetGuid, proj.AddFile("usr/lib/libiconv.tbd", "Frameworks/libiconv.tbd", PBXSourceTree.Sdk));proj.AddFileToBuild(targetGuid, proj.AddFile("usr/lib/libsqlite3.tbd", "Frameworks/libsqlite3.tbd", PBXSourceTree.Sdk));proj.AddFileToBuild(targetGuid, proj.AddFile("usr/lib/libc++.tbd", "Frameworks/libc++.tbd", PBXSourceTree.Sdk));proj.AddFileToBuild(targetGuid, proj.AddFile("usr/lib/libz.tbd", "Frameworks/libz.tbd", PBXSourceTree.Sdk));//添加Frameworksproj.AddFrameworkToProject(targetGuid, "Security.framework", false);proj.AddFrameworkToProject(targetGuid, "SystemConfiguration.framework", false);proj.AddFrameworkToProject(targetGuid, "CoreGraphics.Framework", false);proj.AddFrameworkToProject(targetGuid, "CoreTelephony.framework", false);proj.AddFrameworkToProject(targetGuid, "CFNetwork.framework", false);proj.AddFrameworkToProject(targetGuid, "WebKit.fWXApiObject.h" +"ramework", false);//修改Info.pliststring plistPath = Path.Combine(pathToBuildProject, "Info.plist");PlistDocument plist = new PlistDocument();plist.ReadFromFile(plistPath);PlistElementDict rootDict = plist.root;PlistElementArray urlTypes = rootDict.CreateArray("CFBundleURLTypes");var urlItem2 = urlTypes.AddDict();urlItem2.SetString("CFBundleTypeRole", "Editor");urlItem2.SetString("CFBundleURLName", "你自己的包名");//1urlItem2.SetString("CFBundleURLSchemes", "你自己注册的appid");//2,具体那个有效果var schemes2 = urlItem2.CreateArray("CFBundleURLSchemes");schemes2.AddString("wx47074c4bb44164fa");//添加白名单PlistElementArray queriesSchemes = rootDict.CreateArray("LSApplicationQueriesSchemes");queriesSchemes.AddString("weixin");queriesSchemes.AddString("wechat");queriesSchemes.AddString("weixinULAPI");plist.WriteToFile(plistPath);}
}