flutter 集成微信登录、分享功能

1.微信开放平台创建应用

点击“创建移动应用”，填写相关信息后提交审核

审核通过后申请分享和登录的权限

2.iOS相关配置

Associated Domains：

在xcode中依次点击：左侧根目录Runner--》TARGETS下的Runner--》Signing & Capabilities--》+Capability--》添加Associated Domains

在Domains中填写域名，例如你的域名为www.abc.com，那个填写的格式为：applinks:www.abc.com

apple-app-site-association文件配置

创建文件并在文件内写入：

{    "applinks": {        "apps": [],        "details": [            {                "appID": "teamID.BundleID",                "paths": [ "/app  static void ShareUrl(String url,      {String thumbFile,        Uint8List thumbBytes,        String title,        String desc,        int scene = 1,        String networkThumb,        String assetThumb}) {    // 字符串不为空    bool strNoEmpty(String value) {      if (value == null) return false;      return value.trim().isNotEmpty;    }    desc = desc ?? "";    title = title ?? "";    if (desc.length > 54) {      desc = desc.substring(0, 54) + "...";    }    if (title.length > 20) {      title = title.substring(0, 20) + "...";    }    WeChatScene wxScene = WeChatScene.SESSION;    if (scene == 2) {      wxScene = WeChatScene.TIMELINE;    } else if (scene == 3) {      wxScene = WeChatScene.FAVORITE;    }    WeChatImage image = null;    if (thumbFile != null) {      image = WeChatImage.file(File(thumbFile));    } else if (thumbBytes != null) {      image = WeChatImage.binary(thumbBytes);    } else if (strNoEmpty(networkThumb)) {      image = WeChatImage.network(Uri.encodeFull(networkThumb));    } else if (strNoEmpty(assetThumb)) {      image = WeChatImage.asset(assetThumb, suffix: ".png");    }    var model = WeChatShareWEBPageModel(      url,      thumbnail: image,      title: title,      description: desc,      scene: wxScene,    );    shareToWeChat(model);  }  void ShareImage({String title,    String decs,    String file,    String url,    String asset,    int scene = 1}) async {    WeChatScene wxScene = WeChatScene.SESSION;    if (scene == 2) {      wxScene = WeChatScene.TIMELINE;    } else if (scene == 3) {      wxScene = WeChatScene.FAVORITE;    }    WeChatShareImageModel model = null;    if (file != null) {      model = WeChatShareImageModel(WeChatImage.file(File(file)),          title: title, description: decs, scene: wxScene);    } else if (url != null) {      model = WeChatShareImageModel(WeChatImage.network(url),          title: title, description: decs, scene: wxScene);    } else if (asset != null) {      model = WeChatShareImageModel(WeChatImage.asset(asset),          title: title, description: decs, scene: wxScene);    } else {      throw Exception("缺少图片资源信息");    }    shareToWeChat(model);  }}

6.登录代码

点击微信登录后先判断是否安装了微信，再发送微信授权

GestureDetector(    onTap: (){        //判断是否安装了微信        isWeChatInstalled.then((value){            if(value){                //发送微信授权                sendWeChatAuth(scope: 'snsapi_userinfo', state:"wechat_sdk_demo_test").then((value){                    print('拉取微信用户信息：${value}');                }).catchError((e){});            }else{                print('无法打开微信，请检查是否安装了微信');            }        });    },)

监听微信授权返回结果，若授权成功则执行登录逻辑

void initState() {    _weChatResponseEventHandler();}void _weChatResponseEventHandler(){  weChatResponseEventHandler.distinct((a, b) => a == b).listen((event) {    print('监听微信：${event.errCode}');    if(event is WeChatAuthResponse){      int errCode = event.errCode;      print('微信登录返回值：ErrCode :${event.errCode}  code:${event.code}');      if(errCode == 0){        print('用户同意授权登录');        String code = event.code;        // 调接口将code传给后端，执行登陆操作        ......      }else if(errCode == -4){        print('用户拒绝授权登录');      }else if(errCode == -2){        print('用户取消授权登录');      }    }  });}

来源地址：https://blog.csdn.net/YML_426/article/details/128916526