Android 微信登陆

1.防坑指南：

1. 　微信未返回Code？
   1. 　请更新libammsdk.jar，import com.tencent.mm.sdk.modelmsg.SendAuth。发现命名空间发生了很大的变化。（微信婊这么大的改动也不说下，这么查的 啊，日了狗了。）
2. 如何接收微信授权后的回调？
   
   1. 　在包名下建立wxapi目录，并在该wxapi目录下新增一个WXEntryActivity类
3. 为什么回调没有执行？
   1. 　　配置AndroidManifest，如下：（此问题我也是参考别人的出来的，不知道是不是这个原因。）

<activity

            android:name="net.sourceforge.simcpux.wxapi.WXEntryActivity"

            android:configChanges="orientation|keyboardHidden"

            android:exported="true"

            android:launchMode="singleTop"

            android:screenOrientation="portrait"

            android:theme="@android:style/Theme.Translucent.NoTitleBar" >

            <intent-filter>

                <action android:name="android.intent.action.VIEW" >

                </action>



                <category android:name="android.intent.category.LAUNCHER" />

            </intent-filter>

        </activity>

1. 1.  4　　如何拿到Code

private void handleIntent(Intent intent) {

            String result = "";

            ConUrls.WriteLog("handleIntent"+result);

            SendAuth.Resp resp = new SendAuth.Resp(intent.getExtras());

            if (resp.errCode == BaseResp.ErrCode.ERR_OK) {

                //用户同意

                result ="发送成功";

                //ConUrls.WriteLog("handleIntent"+result);

                //Contexts.CurWeiXinHelper;

                String    weixinCode = resp.code;

                ConUrls.WriteLog("onResume "+weixinCode);

                if(Contexts.CurWeiXinHelper !=null)

                {

                    ConUrls.WriteLog("CurWeiXinHelper "+weixinCode);

                    try

                    {

                        

                        Contexts.CurWeiXinHelper.GetLoginInfo(weixinCode);

                        Contexts.CurWeiXinHelper=null;

                        finish();

                    }

                    catch(Exception e)

                    {

                        ConUrls.WriteLog(e.getMessage());

                    }

                    

                }

            }

        }

5.如何根据code  拿到 openId？

　　

private  void WXGetAccessToken(){

        HttpClient get_access_token_httpClient = new DefaultHttpClient();

        HttpClient get_user_info_httpClient = new DefaultHttpClient();

        String access_token="";

        String openid ="";

        try {

            HttpPost postMethod = new HttpPost(get_access_token);

            HttpResponse response = get_access_token_httpClient.execute(postMethod); // 执行POST方法

            if (response.getStatusLine().getStatusCode() == HttpStatus.SC_OK) {

                InputStream is = response.getEntity().getContent();

                BufferedReader br = new BufferedReader(

                        new InputStreamReader(is));

                String str = "";

                StringBuffer sb = new StringBuffer();

                while ((str = br.readLine()) != null) {

                    sb.append(str);

                }

                is.close();

                String josn = sb.toString();

                JSONObject json1 = new JSONObject(josn);

                access_token = (String) json1.get("access_token");

                openid = (String) json1.get("openid");

            

                

                WeiXinAuthLoginModel model=new WeiXinAuthLoginModel();

                model.setOpenId(openid);

                LoginModel MyLoginModel= SysHelper.GetWeiXinLogin(model, curContent);

                Contexts.MyLoginModel = MyLoginModel;

                SysHelper.StartAm(curContent);

                if(mHandler!=null)

                {

                    Message msg=new Message();

                    msg.obj=MyLoginModel;

                    msg.arg1=mHandlerOrg1;

                    msg.what=1;

                    mHandler.sendMessage(msg);

                }

                

                

            } else {

            }

        } catch (UnsupportedEncodingException e) {

            e.printStackTrace();

            if(mHandler!=null)

            {

                Message msg=new Message();

                msg.obj="登录失败";

                msg.arg1=mHandlerOrg1;

                msg.arg2=-1;

                msg.what=0;

                mHandler.sendMessage(msg);

            }

        } catch (ClientProtocolException e) {

            e.printStackTrace();

            if(mHandler!=null)

            {

                Message msg=new Message();

                msg.obj="登录失败";

                msg.arg1=mHandlerOrg1;

                msg.arg2=-1;

                msg.what=0;

                mHandler.sendMessage(msg);

            }

        } catch (IOException e) {

            e.printStackTrace();

            if(mHandler!=null)

            {

                Message msg=new Message();

                msg.obj="登录失败";

                msg.arg1=mHandlerOrg1;

                msg.arg2=-1;

                msg.what=0;

                mHandler.sendMessage(msg);

            }

        } catch (JSONException e) {

            e.printStackTrace();

            if(mHandler!=null)

            {

                Message msg=new Message();

                msg.obj="登录失败";

                msg.arg1=mHandlerOrg1;

                msg.arg2=-1;

                msg.what=0;

                mHandler.sendMessage(msg);

            }

        }

        //不获取 info

//        String get_user_info_url=getUserInfo(access_token,openid);

//        WXGetUserInfo(get_user_info_url);

    }