support qrcode auth & reformat code

CHANGELOG.md

+## 0.6.1
+* 支持二维码登录
+
 ## 0.6.0
 * kotlin升级至1.3.21。
 * ios SDK升级至1.8.4。

android/src/main/kotlin/com/jarvan/fluwx/FluwxPlugin.kt

@@ -24,7 +24,7 @@ import io.flutter.plugin.common.MethodChannel.MethodCallHandler
 import io.flutter.plugin.common.MethodChannel.Result
 import io.flutter.plugin.common.PluginRegistry.Registrar
 
-class FluwxPlugin(private val registrar: Registrar, private val channel: MethodChannel) : MethodCallHandler {
+class FluwxPlugin(private val registrar: Registrar, channel: MethodChannel) : MethodCallHandler {
     companion object {
         @JvmStatic
         fun registerWith(registrar: Registrar): Unit {
@@ -36,7 +36,7 @@ class FluwxPlugin(private val registrar: Registrar, private val channel: MethodC
     }
 
     private val fluwxShareHandler = FluwxShareHandler()
-    private val fluwxAuthHandler = FluwxAuthHandler()
+    private val fluwxAuthHandler = FluwxAuthHandler(channel)
     private val fluwxPayHandler = FluwxPayHandler()
     private val fluwxLaunchMiniProgramHandler = FluwxLaunchMiniProgramHandler()
     private val fluwxSubscribeMsgHandler = FluwxSubscribeMsgHandler()
@@ -69,6 +69,14 @@ class FluwxPlugin(private val registrar: Registrar, private val channel: MethodC
             return
         }
 
+        if ("authByQRCode" == call.method) {
+            fluwxAuthHandler.authByQRCode(call, result)
+        }
+
+        if ("stopAuthByQRCode" == call.method) {
+            fluwxAuthHandler.stopAuthByQRCode(result)
+        }
+
         if (call.method == WeChatPluginMethods.PAY) {
             fluwxPayHandler.pay(call, result)
             return

android/src/main/kotlin/com/jarvan/fluwx/handler/FluwxAuthHandler.kt

@@ -16,11 +16,39 @@
 package com.jarvan.fluwx.handler
 
 
+import com.tencent.mm.opensdk.diffdev.DiffDevOAuthFactory
+import com.tencent.mm.opensdk.diffdev.OAuthErrCode
+import com.tencent.mm.opensdk.diffdev.OAuthListener
 import com.tencent.mm.opensdk.modelmsg.SendAuth
 import io.flutter.plugin.common.MethodCall
 import io.flutter.plugin.common.MethodChannel
 
-internal class FluwxAuthHandler {
+internal class FluwxAuthHandler(private val methodChannel: MethodChannel) {
+    //    private DiffDevOAuthFactory.getDiffDevOAuth()
+    private val qrCodeAuth by lazy {
+        DiffDevOAuthFactory.getDiffDevOAuth()
+    }
+
+    private val qrCodeAuthListener by lazy {
+        object : OAuthListener {
+            override fun onAuthFinish(p0: OAuthErrCode, authCode: String?) {
+                methodChannel.invokeMethod("onAuthByQRCodeFinished", {
+                    "errCode" to p0.code
+                    "authCode" to authCode
+                })
+            }
+
+            override fun onAuthGotQrcode(p0: String?, p1: ByteArray) {
+                methodChannel.invokeMethod("onAuthGotQRCode", p1)
+            }
+
+            override fun onQrcodeScanned() {
+                methodChannel.invokeMethod("onQRCodeScanned", null)
+            }
+
+        }
+    }
+
 
     fun sendAuth(call: MethodCall, result: MethodChannel.Result) {
         val req = SendAuth.Req()
@@ -35,4 +63,20 @@ internal class FluwxAuthHandler {
         result.success(WXAPiHandler.wxApi?.sendReq(req))
     }
 
+
+    fun authByQRCode(call: MethodCall, result: MethodChannel.Result) {
+        val appId = call.argument("appId") ?: ""
+        val scope = call.argument("scope") ?: ""
+        val nonceStr = call.argument("nonceStr") ?: ""
+        val timeStamp = call.argument("timeStamp") ?: ""
+        val signature = call.argument("signature") ?: ""
+//        val schemeData = call.argument("schemeData")?:""
+
+        qrCodeAuth.auth(appId, scope, nonceStr, timeStamp, signature, qrCodeAuthListener)
+    }
+
+    fun stopAuthByQRCode(result: MethodChannel.Result) {
+        result.success(qrCodeAuth.stopAuth())
+    }
+
 }
\ No newline at end of file

android/src/main/kotlin/com/jarvan/fluwx/handler/FluwxLaunchMiniProgramHandler.kt

 package com.jarvan.fluwx.handler
 
-import android.util.Log
 import com.jarvan.fluwx.constant.WechatPluginKeys
+import com.tencent.mm.opensdk.modelbiz.WXLaunchMiniProgram
 import io.flutter.plugin.common.MethodCall
 import io.flutter.plugin.common.MethodChannel
-import com.tencent.mm.opensdk.modelbiz.WXLaunchMiniProgram
-
 
 
 internal class FluwxLaunchMiniProgramHandler {
 
-    fun launchMiniProgram(call: MethodCall,result: MethodChannel.Result){
+    fun launchMiniProgram(call: MethodCall, result: MethodChannel.Result) {
         val req = WXLaunchMiniProgram.Req()
         req.userName = call.argument<String?>("userName") // 填小程序原始id
-        req.path = call.argument<String?>("path")?:"" //拉起小程序页面的可带参路径，不填默认拉起小程序首页
-        val type = call.argument("miniProgramType")?:0
-        req.miniprogramType = when(type){
+        req.path = call.argument<String?>("path") ?: "" //拉起小程序页面的可带参路径，不填默认拉起小程序首页
+        val type = call.argument("miniProgramType") ?: 0
+        req.miniprogramType = when (type) {
             1 -> WXLaunchMiniProgram.Req.MINIPROGRAM_TYPE_TEST
-            2-> WXLaunchMiniProgram.Req.MINIPROGRAM_TYPE_PREVIEW
-            else-> WXLaunchMiniProgram.Req.MINIPTOGRAM_TYPE_RELEASE
+            2 -> WXLaunchMiniProgram.Req.MINIPROGRAM_TYPE_PREVIEW
+            else -> WXLaunchMiniProgram.Req.MINIPTOGRAM_TYPE_RELEASE
         }// 可选打开 开发版，体验版和正式版
         val done = WXAPiHandler.wxApi?.sendReq(req)
         result.success(mapOf(

android/src/main/kotlin/com/jarvan/fluwx/handler/FluwxResponseHandler.kt

@@ -15,7 +15,6 @@
  */
 package com.jarvan.fluwx.handler
 
-import android.util.Log
 import com.jarvan.fluwx.constant.WeChatPluginMethods
 import com.jarvan.fluwx.constant.WechatPluginKeys
 import com.tencent.mm.opensdk.modelbase.BaseResp
@@ -75,7 +74,7 @@ object FluwxResponseHandler {
 
 
         response.extMsg?.let {
-//            "extMsg" to response.extMsg,
+            //            "extMsg" to response.extMsg,
             result["extMsg"] = response.extMsg
         }
 

android/src/main/kotlin/com/jarvan/fluwx/handler/FluwxShareHandler.kt

@@ -103,10 +103,10 @@ internal class FluwxShareHandler {
     private fun shareMiniProgram(call: MethodCall, result: MethodChannel.Result) {
         val miniProgramObj = WXMiniProgramObject()
         miniProgramObj.webpageUrl = call.argument("webPageUrl") // 兼容低版本的网页链接
-        miniProgramObj.miniprogramType = call.argument("miniProgramType")?:0// 正式版:0，测试版:1，体验版:2
+        miniProgramObj.miniprogramType = call.argument("miniProgramType") ?: 0// 正式版:0，测试版:1，体验版:2
         miniProgramObj.userName = call.argument("userName")     // 小程序原始id
         miniProgramObj.path = call.argument("path")            //小程序页面路径
-        miniProgramObj.withShareTicket = call.argument("withShareTicket")?:true
+        miniProgramObj.withShareTicket = call.argument("withShareTicket") ?: true
         val msg = WXMediaMessage(miniProgramObj)
         msg.title = call.argument(WechatPluginKeys.TITLE)                   // 小程序消息title
         msg.description = call.argument("description")               // 小程序消息desc
@@ -148,7 +148,8 @@ internal class FluwxShareHandler {
             result ?: byteArrayOf()
         }.await()
     }
-//    private suspend fun getThumbnailByteArrayCommon(registrar: PluginRegistry.Registrar?, thumbnail: String): ByteArray {
+
+    //    private suspend fun getThumbnailByteArrayCommon(registrar: PluginRegistry.Registrar?, thumbnail: String): ByteArray {
 //        return GlobalScope.async(Dispatchers.Default, CoroutineStart.DEFAULT, {
 //            val result = WeChatThumbnailUtil.thumbnailForCommon(thumbnail, registrar)
 //            result ?: byteArrayOf()
@@ -166,9 +167,9 @@ internal class FluwxShareHandler {
 
 
         GlobalScope.launch(Dispatchers.Main, CoroutineStart.DEFAULT) {
-            val byteArray: ByteArray? = if (imagePath.isNullOrBlank()){
+            val byteArray: ByteArray? = if (imagePath.isNullOrBlank()) {
                 byteArrayOf()
-            }else{
+            } else {
                 getImageByteArrayCommon(registrar, imagePath!!)
             }
 
@@ -353,7 +354,8 @@ internal class FluwxShareHandler {
         msg.messageExt = call.argument<String>(WechatPluginKeys.MESSAGE_EXT)
         msg.mediaTagName = call.argument<String>(WechatPluginKeys.MEDIA_TAG_NAME)
         req.transaction = call.argument(WechatPluginKeys.TRANSACTION)
-        req.scene = getScene(call.argument(WechatPluginKeys.SCENE)?:WechatPluginKeys.SCENE_SESSION)
+        req.scene = getScene(call.argument(WechatPluginKeys.SCENE)
+                ?: WechatPluginKeys.SCENE_SESSION)
     }
 
 }
\ No newline at end of file

android/src/main/kotlin/com/jarvan/fluwx/handler/FluwxSubscribeMsgHandler.kt

@@ -5,7 +5,6 @@ import io.flutter.plugin.common.MethodCall
 import io.flutter.plugin.common.MethodChannel
 
 
-
 /// create 2018/12/20 by cai
 
 

android/src/main/kotlin/com/jarvan/fluwx/utils/ShareImageUtil.java

@@ -61,13 +61,13 @@ public class ShareImageUtil {
 
         } else if (path.startsWith(WeChatPluginImageSchema.SCHEMA_FILE)) {
             String pathWithoutUri = path.substring("file://".length());
-            result = fileToByteArray(registrar,pathWithoutUri);
-        } else if(path.startsWith(WeChatPluginImageSchema.SCHEMA_CONTENT)){
-            File file = getFileFromContentProvider(registrar,path);
+            result = fileToByteArray(registrar, pathWithoutUri);
+        } else if (path.startsWith(WeChatPluginImageSchema.SCHEMA_CONTENT)) {
+            File file = getFileFromContentProvider(registrar, path);
             if (file != null) {
-                result = fileToByteArray(registrar,file.getAbsolutePath());
+                result = fileToByteArray(registrar, file.getAbsolutePath());
             }
-        }else {
+        } else {
 //            result = handleNetworkImage(registrar, path);
             result = Util.inputStreamToByte(openStream(path));
         }
@@ -88,7 +88,7 @@ public class ShareImageUtil {
         return Util.bmpToByteArray(bmp, true);
     }
 
-    private static  byte[] fileToByteArray(PluginRegistry.Registrar registrar, String pathWithoutUri){
+    private static byte[] fileToByteArray(PluginRegistry.Registrar registrar, String pathWithoutUri) {
 
         byte[] result = null;
         Bitmap bmp = null;
@@ -97,7 +97,7 @@ public class ShareImageUtil {
         int byteCount;
         if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.KITKAT) {
             byteCount = bmp.getAllocationByteCount();
-        }else {
+        } else {
             byteCount = bmp.getByteCount();
         }
         if (byteCount >= WX_MAX_IMAGE_BYTE_SIZE) {
@@ -181,7 +181,7 @@ public class ShareImageUtil {
 
     }
 
-    private static File getFileFromContentProvider(PluginRegistry.Registrar registrar,String path) {
+    private static File getFileFromContentProvider(PluginRegistry.Registrar registrar, String path) {
         Source source = null;
         BufferedSink sink = null;
 
@@ -211,7 +211,7 @@ public class ShareImageUtil {
             source.close();
             sink.close();
         } catch (IOException e) {
-            Log.i("fluwx","reading image failed:\n" + e.getMessage());
+            Log.i("fluwx", "reading image failed:\n" + e.getMessage());
         }
 
         return file;

android/src/main/kotlin/com/jarvan/fluwx/utils/Util.java

@@ -22,7 +22,6 @@ import android.graphics.Canvas;
 import android.graphics.Rect;
 import android.util.Log;
 
-
 import java.io.ByteArrayOutputStream;
 import java.io.File;
 import java.io.IOException;

android/src/main/kotlin/com/jarvan/fluwx/wxapi/FluwxWXEntryActivity.kt

@@ -18,13 +18,11 @@ package com.jarvan.fluwx.wxapi
 import android.app.Activity
 import android.content.Intent
 import android.os.Bundle
-import android.util.Log
 import com.jarvan.fluwx.handler.FluwxResponseHandler
 import com.jarvan.fluwx.handler.WXAPiHandler
 import com.tencent.mm.opensdk.modelbase.BaseReq
 import com.tencent.mm.opensdk.modelbase.BaseResp
 import com.tencent.mm.opensdk.openapi.IWXAPIEventHandler
-import java.lang.Exception
 
 
 open class FluwxWXEntryActivity : Activity(), IWXAPIEventHandler {
@@ -38,7 +36,7 @@ open class FluwxWXEntryActivity : Activity(), IWXAPIEventHandler {
 
         try {
             WXAPiHandler.wxApi?.handleIntent(intent, this)
-        }catch (e:Exception){
+        } catch (e: Exception) {
             e.printStackTrace()
             finish()
         }
@@ -52,7 +50,7 @@ open class FluwxWXEntryActivity : Activity(), IWXAPIEventHandler {
 
         try {
             WXAPiHandler.wxApi?.handleIntent(intent, this)
-        }catch (e:Exception){
+        } catch (e: Exception) {
             e.printStackTrace()
             finish()
         }

android/src/main/kotlin/com/jarvan/fluwx/wxapi/WXEntryActivity.kt

@@ -16,5 +16,4 @@
 package com.jarvan.fluwx.wxapi
 
 
-
-open class WXEntryActivity :FluwxWXEntryActivity()
+open class WXEntryActivity : FluwxWXEntryActivity()
\ No newline at end of file
\ No newline at end of file

android/src/main/kotlin/com/jarvan/fluwx/wxapi/WXPayEntryActivity.kt

@@ -16,5 +16,4 @@
 package com.jarvan.fluwx.wxapi
 
 
-
-open class WXPayEntryActivity :FluwxWXEntryActivity()
+open class WXPayEntryActivity : FluwxWXEntryActivity()
\ No newline at end of file
\ No newline at end of file

example/android/build.gradle

@@ -6,7 +6,7 @@ buildscript {
     }
 
     dependencies {
-        classpath 'com.android.tools.build:gradle:3.3.1'
+        classpath 'com.android.tools.build:gradle:3.3.2'
         classpath "org.jetbrains.kotlin:kotlin-gradle-plugin:$kotlin_version"
     }
 }

example/lib/auth_by_qr_code_page.dart

+import 'dart:typed_data';
+
+import 'package:flutter/material.dart';
+import 'package:fluwx/fluwx.dart' as fluwx;
+
+class AuthByQRCodePage extends StatefulWidget {
+  @override
+  _AuthByQRCodePageState createState() => _AuthByQRCodePageState();
+}
+
+class _AuthByQRCodePageState extends State<AuthByQRCodePage> {
+  String _status = "status";
+  Uint8List _image;
+
+  @override
+  void initState() {
+    super.initState();
+
+    fluwx.onAuthByQRCodeFinished.listen((data) => {
+          setState(() {
+            _status =
+                "errorCode=>${data.errorCode}\nauthCode=>${data.authCode}";
+          })
+        });
+    fluwx.onAuthGotQRCode.listen((image) {
+      setState(() {
+        _image = image;
+      });
+    });
+
+    fluwx.onQRCodeScanned.listen((scanned) {
+      setState(() {
+        _status = "scanned";
+      });
+    });
+  }
+
+  @override
+  Widget build(BuildContext context) {
+    return Scaffold(
+      appBar: AppBar(
+        title: Text("AuthByQRCode"),
+      ),
+      body: Column(
+        children: <Widget>[
+          RaisedButton(
+            onPressed: () {
+              fluwx.authByQRCode(
+                  appId: "wxd930ea5d5a258f4f",
+                  scope: "noncestr",
+                  nonceStr: "nonceStr",
+                  timeStamp: "1417508194",
+                  signature: "429eaaa13fd71efbc3fd344d0a9a9126835e7303");
+            },
+            child: Text("AUTH NOW"),
+          ),
+          Text(_status),
+          _qrCode()
+        ],
+      ),
+    );
+  }
+
+  Widget _qrCode() {
+    if (_image == null) {
+      return Container();
+    } else {
+      return Image.memory(_image);
+    }
+  }
+}

example/lib/launch_mini_program_page.dart

@@ -7,8 +7,6 @@ class LaunchMiniProgramPage extends StatefulWidget {
 }
 
 class _LaunchMiniProgramPageState extends State<LaunchMiniProgramPage> {
-
-
   String _result = "无";
 
   @override
@@ -19,14 +17,12 @@ class _LaunchMiniProgramPageState extends State<LaunchMiniProgramPage> {
         _result = "${data.extMsg}";
       });
     });
-
   }
 
   @override
   void dispose() {
     super.dispose();
     _result = null;
-
   }
 
   @override
@@ -39,9 +35,7 @@ class _LaunchMiniProgramPageState extends State<LaunchMiniProgramPage> {
         children: <Widget>[
           OutlineButton(
             onPressed: () {
-              fluwx.launchMiniProgram(
-                username: "gh_d43f693ca31f"
-              ).then((data) {
+              fluwx.launchMiniProgram(username: "gh_d43f693ca31f").then((data) {
                 print(data);
               });
             },

example/lib/main.dart

@@ -2,8 +2,10 @@ import 'dart:async';
 
 import 'package:flutter/material.dart';
 import 'package:fluwx/fluwx.dart' as fluwx;
+import 'package:fluwx_example/launch_mini_program_page.dart';
 import 'package:fluwx_example/subscribe_message_page.dart';
 
+import 'auth_by_qr_code_page.dart';
 import 'pay_page.dart';
 import 'send_auth.dart';
 import 'share_image_page.dart';
@@ -12,7 +14,6 @@ import 'share_music.dart';
 import 'share_text_image.dart';
 import 'share_video_page.dart';
 import 'share_web_page.dart';
-import 'package:fluwx_example/launch_mini_program_page.dart';
 
 void main() => runApp(new MyApp());
 
@@ -28,8 +29,12 @@ class _MyAppState extends State<MyApp> {
     _initFluwx();
   }
 
-  _initFluwx() async{
-    await fluwx.register(appId: "wxd930ea5d5a258f4f", doOnAndroid: true, doOnIOS: true, enableMTA: false);
+  _initFluwx() async {
+    await fluwx.register(
+        appId: "wxd930ea5d5a258f4f",
+        doOnAndroid: true,
+        doOnIOS: true,
+        enableMTA: false);
     var result = await fluwx.isWeChatInstalled();
     print("is installed $result");
   }
@@ -51,6 +56,7 @@ class _MyAppState extends State<MyApp> {
         "pay": (context) => PayPage(),
         "launchMiniProgram": (context) => LaunchMiniProgramPage(),
         "subscribeMessage": (ctx) => SubscribeMessagePage(),
+        "AuthByQRCode": (ctx) => AuthByQRCodePage()
       },
       home: new Scaffold(
           appBar: new AppBar(
@@ -147,6 +153,14 @@ class ShareSelectorPage extends StatelessWidget {
                 },
                 child: const Text("SubscribeMessage")),
           ),
+          Padding(
+            padding: const EdgeInsets.all(8.0),
+            child: new OutlineButton(
+                onPressed: () {
+                  Navigator.of(context).pushNamed("AuthByQRCode");
+                },
+                child: const Text("AuthByQRCode")),
+          ),
         ],
       ),
     );

example/lib/pay_page.dart

@@ -45,7 +45,8 @@ class _PayPageState extends State<PayPage> {
               Map<String, dynamic> result = json.decode(data);
               print(result['appid']);
               print(result["timestamp"]);
-              fluwx.pay(
+              fluwx
+                  .pay(
                 appId: result['appid'].toString(),
                 partnerId: result['partnerid'].toString(),
                 prepayId: result['prepayid'].toString(),

example/lib/send_auth.dart

@@ -7,7 +7,6 @@ class SendAuthPage extends StatefulWidget {
 }
 
 class _SendAuthPageState extends State<SendAuthPage> {
- 
   String _result = "无";
 
   @override
@@ -18,14 +17,12 @@ class _SendAuthPageState extends State<SendAuthPage> {
         _result = "${data.errCode}";
       });
     });
-
   }
 
   @override
   void dispose() {
     super.dispose();
     _result = null;
-
   }
 
   @override
@@ -38,11 +35,10 @@ class _SendAuthPageState extends State<SendAuthPage> {
         children: <Widget>[
           OutlineButton(
             onPressed: () {
-              fluwx.sendAuth(
+              fluwx
+                  .sendAuth(
                       scope: "snsapi_userinfo", state: "wechat_sdk_demo_test")
-                  .then((data) {
-
-              });
+                  .then((data) {});
             },
             child: const Text("send auth"),
           ),

example/lib/share_image_page.dart

@@ -7,17 +7,17 @@ class ShareImagePage extends StatefulWidget {
 }
 
 class _ShareImagePageState extends State<ShareImagePage> {
-
   fluwx.WeChatScene scene = fluwx.WeChatScene.SESSION;
   String _imagePath =
       "https://timgsa.baidu.com/timg?image&quality=80&size=b9999_10000&sec=1534614311230&di=b17a892b366b5d002f52abcce7c4eea0&imgtype=0&src=http%3A%2F%2Fimg.mp.sohu.com%2Fupload%2F20170516%2F51296b2673704ae2992d0a28c244274c_th.png";
   String _thumbnail = "assets://logo.png";
 
-  String _response ="";
+  String _response = "";
+
   @override
   void initState() {
     super.initState();
-    fluwx.responseFromShare.listen((data){
+    fluwx.responseFromShare.listen((data) {
       setState(() {
         _response = data.errCode.toString();
       });
@@ -91,7 +91,6 @@ class _ShareImagePageState extends State<ShareImagePage> {
                 )
               ],
             ),
-
             Text(_response)
           ],
         ),

example/lib/share_mini_program.dart

@@ -19,7 +19,6 @@ class _ShareMiniProgramPageState extends State<ShareMiniProgramPage> {
   @override
   void initState() {
     super.initState();
-
   }
 
   @override

example/lib/share_music.dart

@@ -7,7 +7,6 @@ class ShareMusicPage extends StatefulWidget {
 }
 
 class _ShareMusicPageState extends State<ShareMusicPage> {
-
   String _musicUrl =
       "http://staff2.ustc.edu.cn/~wdw/softdown/index.asp/0042515_05.ANDY.mp3";
   String _musicLowBandUrl = "http://www.qq.com";
@@ -19,7 +18,6 @@ class _ShareMusicPageState extends State<ShareMusicPage> {
   @override
   void initState() {
     super.initState();
-
   }
 
   @override

example/lib/share_text_image.dart

@@ -7,7 +7,6 @@ class ShareTextPage extends StatefulWidget {
 }
 
 class _ShareTextPageState extends State<ShareTextPage> {
-
   String _text = "share text from fluwx";
   fluwx.WeChatScene scene = fluwx.WeChatScene.SESSION;
 

example/lib/share_video_page.dart

@@ -7,7 +7,6 @@ class ShareVideoPage extends StatefulWidget {
 }
 
 class _ShareMusicPageState extends State<ShareVideoPage> {
-
   String _videoUrl = "http://www.qq.com";
   String _videoLowBandUrl = "http://www.qq.com";
   String _title = "Beyond";

example/lib/share_web_page.dart

@@ -9,7 +9,6 @@ class ShareWebPagePage extends StatefulWidget {
 }
 
 class ShareWebPagePageState extends State<ShareWebPagePage> {
-
   String _url = "share text from fluwx";
   String _title = "Fluwx";
   String _thumnail = "assets://images/logo.png";
@@ -18,7 +17,6 @@ class ShareWebPagePageState extends State<ShareWebPagePage> {
   @override
   void initState() {
     super.initState();
-
   }
 
   @override

example/lib/subscribe_message_page.dart

@@ -8,9 +8,11 @@ class SubscribeMessagePage extends StatefulWidget {
 
 /// see wechat [document](https://open.weixin.qq.com/cgi-bin/showdocument?action=dir_list&t=resource/res_list&verify=1&id=open1500434436_aWfqW&token=&lang=zh_CN)
 class _SubscribeMessagePageState extends State<SubscribeMessagePage> {
-  TextEditingController appId = TextEditingController(text: "wx316f9c82e99ac105");
+  TextEditingController appId =
+      TextEditingController(text: "wx316f9c82e99ac105");
   TextEditingController scene = TextEditingController(text: "1");
-  TextEditingController templateId = TextEditingController(text: "cm_vM2k3IjHcYbkGUeAfL6Fja_7Pgv4Hx_q4tA253Ss");
+  TextEditingController templateId = TextEditingController(
+      text: "cm_vM2k3IjHcYbkGUeAfL6Fja_7Pgv4Hx_q4tA253Ss");
   TextEditingController reserved = TextEditingController(text: "123");
 
   @override
@@ -41,7 +43,8 @@ class _SubscribeMessagePageState extends State<SubscribeMessagePage> {
           children: <Widget>[
             _buildTextField(title: "appId", textEditController: appId),
             _buildTextField(title: "scene", textEditController: scene),
-            _buildTextField(title: "templateId", textEditController: templateId),
+            _buildTextField(
+                title: "templateId", textEditController: templateId),
             _buildTextField(title: "reserved", textEditController: reserved),
             FlatButton(
               child: Text('request once subscribe message'),

lib/fluwx.dart

@@ -5,6 +5,7 @@
 library fluwx;
 
 export 'src/fluwx_iml.dart';
+export 'src/models/wechat_auth_by_qr_code.dart';
 export 'src/models/wechat_response.dart';
 export 'src/models/wechat_share_models.dart';
 export 'src/wechat_type.dart';

lib/src/fluwx_iml.dart

@@ -14,14 +14,16 @@
  * limitations under the License.
  */
 import 'dart:async';
+import 'dart:typed_data';
 
+import 'package:flutter/foundation.dart';
 import 'package:flutter/services.dart';
 
+import 'models/wechat_auth_by_qr_code.dart';
 import 'models/wechat_response.dart';
 import 'models/wechat_share_models.dart';
-import 'wechat_type.dart';
-import 'package:flutter/foundation.dart';
 import 'utils/utils.dart';
+import 'wechat_type.dart';
 
 StreamController<WeChatShareResponse> _responseShareController =
     new StreamController.broadcast();
@@ -58,6 +60,24 @@ StreamController<WeChatSubscribeMsgResp> _responseFromSubscribeMsg =
 Stream<WeChatSubscribeMsgResp> get responseFromSubscribeMsg =>
     _responseFromSubscribeMsg.stream;
 
+StreamController<AuthByQRCodeResult> _authByQRCodeFinishedController =
+    new StreamController.broadcast();
+
+///invoked when [authByQRCode] finished
+Stream<AuthByQRCodeResult> get onAuthByQRCodeFinished =>
+    _authByQRCodeFinishedController.stream;
+
+StreamController<Uint8List> _onAuthGotQRCodeController =
+    new StreamController.broadcast();
+
+///when QRCode received
+Stream<Uint8List> get onAuthGotQRCode => _onAuthGotQRCodeController.stream;
+
+StreamController _onQRCodeScannedController = new StreamController();
+
+///after uer scanned the QRCode you just received
+Stream get onQRCodeScanned => _onQRCodeScannedController.stream;
+
 final MethodChannel _channel = const MethodChannel('com.jarvanmo/fluwx')
   ..setMethodCallHandler(_handler);
 
@@ -77,20 +97,17 @@ Future<dynamic> _handler(MethodCall methodCall) {
   } else if ("onSubscribeMsgResp" == methodCall.method) {
     _responseFromSubscribeMsg
         .add(WeChatSubscribeMsgResp.fromMap(methodCall.arguments));
+  } else if ("onAuthByQRCodeFinished" == methodCall.method) {
+    _handleOnAuthByQRCodeFinished(methodCall);
+  } else if ("onAuthGotQRCode" == methodCall.method) {
+    _onAuthGotQRCodeController.add(methodCall.arguments);
+  } else if ("onQRCodeScanned" == methodCall.method) {
+    _onQRCodeScannedController.add(null);
   }
 
   return Future.value(true);
 }
 
-const Map<Type, String> _shareModelMethodMapper = {
-  WeChatShareTextModel: "shareText",
-  WeChatShareImageModel: "shareImage",
-  WeChatShareMusicModel: "shareMusic",
-  WeChatShareVideoModel: "shareVideo",
-  WeChatShareWebPageModel: "shareWebPage",
-  WeChatShareMiniProgramModel: "shareMiniProgram"
-};
-
 ///[appId] is not necessary.
 ///if [doOnIOS] is true ,fluwx will register WXApi on iOS.
 ///if [doOnAndroid] is true, fluwx will register WXApi on Android.
@@ -108,11 +125,15 @@ Future register(
 }
 
 ///we don't need the response any longer if params are true.
-void dispose(
-    {shareResponse: true,
+void dispose({
+  shareResponse: true,
   authResponse: true,
   paymentResponse: true,
-    launchMiniProgramResponse: true}) {
+  launchMiniProgramResponse: true,
+  onAuthByQRCodeFinished: true,
+  onAuthGotQRCode: true,
+  onQRCodeScanned: true,
+}) {
   if (shareResponse) {
     _responseShareController.close();
   }
@@ -127,6 +148,18 @@ void dispose(
   if (paymentResponse) {
     _responseAuthController.close();
   }
+
+  if (onAuthByQRCodeFinished) {
+    _authByQRCodeFinishedController.close();
+  }
+
+  if (onAuthGotQRCode) {
+    _onAuthGotQRCodeController.close();
+  }
+
+  if (onQRCodeScanned) {
+    _onQRCodeScannedController.close();
+  }
 }
 
 //  static Future unregisterApp(RegisterModel model) async {
@@ -148,8 +181,12 @@ Future share(WeChatShareModel model) async {
   }
 }
 
-/// in order to get code from WeChat.
-/// for more information please visit：
+/// The WeChat-Login is under Auth-2.0
+/// This method login with native WeChat app.
+/// For users without WeChat app, please use [authByQRCode] instead
+/// This method only supports getting AuthCode,this is first step to login with WeChat
+/// Once AuthCode got, you need to request Access_Token
+/// For more information please visit：
 /// * https://open.weixin.qq.com/cgi-bin/showdocument?action=dir_list&t=resource/res_list&verify=1&id=open1419317851&token=
 Future sendAuth({String openId, @required String scope, String state}) async {
   // "scope": scope, "state": state, "openId": openId
@@ -159,6 +196,39 @@ Future sendAuth({String openId, @required String scope, String state}) async {
       "sendAuth", {"scope": scope, "state": state, "openId": openId});
 }
 
+/// Sometimes WeChat  is not installed on users's devices.However we can
+/// request a QRCode so that we can get AuthCode by scanning the QRCode
+/// All required params must not be null or empty
+/// [schemeData] only works on iOS
+/// see * https://open.weixin.qq.com/cgi-bin/showdocument?action=dir_list&t=resource/res_list&verify=1&id=215238808828h4XN&token=&lang=zh_CN
+Future authByQRCode(
+    {@required String appId,
+    @required String scope,
+    @required String nonceStr,
+    @required String timeStamp,
+    @required String signature,
+    String schemeData}) async {
+  assert(appId != null && appId.isNotEmpty);
+  assert(scope != null && scope.isNotEmpty);
+  assert(nonceStr != null && nonceStr.isNotEmpty);
+  assert(timeStamp != null && timeStamp.isNotEmpty);
+  assert(signature != null && signature.isNotEmpty);
+
+  return await _channel.invokeMethod("authByQRCode", {
+    "appId": appId,
+    "scope": scope,
+    "nonceStr": nonceStr,
+    "timeStamp": timeStamp,
+    "signature": signature,
+    "schemeData": schemeData
+  });
+}
+
+/// stop auth
+Future stopAuthByQRCode() async {
+  return await _channel.invokeMethod("stopAuthByQRCode");
+}
+
 /// open mini-program
 /// see [WXMiniProgramType]
 Future launchMiniProgram(
@@ -230,3 +300,28 @@ Future subscribeMsg({
     },
   );
 }
+
+_handleOnAuthByQRCodeFinished(MethodCall methodCall) {
+  int errCode = methodCall.arguments("errCode");
+  _authByQRCodeFinishedController.add(AuthByQRCodeResult(
+      methodCall.arguments("authCode"),
+      _authByQRCodeErrorCodes[errCode] ?? AuthByQRCodeErrorCode.UNKNOWN));
+}
+
+const Map<Type, String> _shareModelMethodMapper = {
+  WeChatShareTextModel: "shareText",
+  WeChatShareImageModel: "shareImage",
+  WeChatShareMusicModel: "shareMusic",
+  WeChatShareVideoModel: "shareVideo",
+  WeChatShareWebPageModel: "shareWebPage",
+  WeChatShareMiniProgramModel: "shareMiniProgram"
+};
+
+const Map<int, AuthByQRCodeErrorCode> _authByQRCodeErrorCodes = {
+  0: AuthByQRCodeErrorCode.OK,
+  -1: AuthByQRCodeErrorCode.NORMAL_ERR,
+  -2: AuthByQRCodeErrorCode.NETWORK_ERR,
+  -3: AuthByQRCodeErrorCode.JSON_DECODE_ERR,
+  -4: AuthByQRCodeErrorCode.CANCEL,
+  -5: AuthByQRCodeErrorCode.AUTH_STOPPED
+};

lib/src/models/wechat_auth_by_qr_code.dart

+//WechatAuth_Err_OK(0),
+//WechatAuth_Err_NormalErr(-1),
+//WechatAuth_Err_NetworkErr(-2),
+//WechatAuth_Err_JsonDecodeErr(-3),
+//WechatAuth_Err_Cancel(-4),
+//WechatAuth_Err_Timeout(-5),
+//WechatAuth_Err_Auth_Stopped(-6);
+
+enum AuthByQRCodeErrorCode {
+  OK,
+  NORMAL_ERR,
+  NETWORK_ERR,
+  JSON_DECODE_ERR,
+  CANCEL,
+  TIMEOUT,
+  AUTH_STOPPED,
+  UNKNOWN
+}
+
+class AuthByQRCodeResult {
+  final String authCode;
+  final AuthByQRCodeErrorCode errorCode;
+
+  AuthByQRCodeResult(this.authCode, this.errorCode);
+}

lib/src/models/wechat_share_models.dart

@@ -15,8 +15,8 @@
  */
 import 'package:flutter/foundation.dart';
 
-import '../wechat_type.dart';
 import '../utils/utils.dart';
+import '../wechat_type.dart';
 
 const String _scene = "scene";
 const String _transaction = "transaction";