Android 微信分享，分享到朋友圈与分享到好友，以及微信登陆

extends：http://www.cnblogs.com/android100/p/Android-qq.html

一、申请你的AppID

http://open.weixin.qq.com/

  友情提示：推荐使用eclipse打包软件最后一步的MD5值去申请AppID

二、官网下载libammsdk.jar包

http://open.weixin.qq.com/download/?lang=zh_CN

三、将libammsdk.jar复制到工程的libs目录

四、在需要分享的Activity编写代码 

private IWXAPI wxApi;  
//实例化  
wxApi = WXAPIFactory.createWXAPI(this, Constants.WX_APP_ID);  
wxApi.registerApp(Constants.WX_APP_ID);  
/** 
 * 微信分享 （这里仅提供一个分享网页的示例，其它请参看官网示例代码） 
 * @param flag(0:分享到微信好友，1：分享到微信朋友圈) 
 */  
private void wechatShare(int flag){  
    WXWebpageObject webpage = new WXWebpageObject();  
    webpage.webpageUrl = "这里填写链接url";  
    WXMediaMessage msg = new WXMediaMessage(webpage);  
    msg.title = "这里填写标题";  
    msg.description = "这里填写内容";  
    //这里替换一张自己工程里的图片资源  
    Bitmap thumb = BitmapFactory.decodeResource(getResources(), R.drawable.share_logo);  
    msg.setThumbImage(thumb);  
      
    SendMessageToWX.Req req = new SendMessageToWX.Req();  
    req.transaction = String.valueOf(System.currentTimeMillis());  
    req.message = msg;  
    req.scene = flag==0?SendMessageToWX.Req.WXSceneSession:SendMessageToWX.Req.WXSceneTimeline;  
    wxApi.sendReq(req);  
}  
//在需要分享的地方添加代码：  
wechatShare(0);//分享到微信好友  
wechatShare(1);//分享到微信朋友圈  
 

五、在你的包名相应目录下新建一个wxapi目录，并在该wxapi目录下新增一个WXEntryActivity类，该类继承自Activity，实现IWXAPIEventHandler接口

 

/** 微信客户端回调activity示例 */  
public class WXEntryActivity extends Activity implements IWXAPIEventHandler {  
    // IWXAPI 是第三方app和微信通信的openapi接口  
    private IWXAPI api;  
    @Override  
    protected void onCreate(Bundle savedInstanceState) {  
        api = WXAPIFactory.createWXAPI(this, "这里替换第一步申请的APP_ID", false);  
        api.handleIntent(getIntent(), this);  
        super.onCreate(savedInstanceState);  
    }  
    @Override  
    public void onReq(BaseReq arg0) { }  
  
    @Override  
    public void onResp(BaseResp resp) {  
        LogManager.show(TAG, "resp.errCode:" + resp.errCode + ",resp.errStr:"  
                + resp.errStr, 1);  
        switch (resp.errCode) {  
        case BaseResp.ErrCode.ERR_OK:  
            //分享成功  
            break;  
        case BaseResp.ErrCode.ERR_USER_CANCEL:  
            //分享取消  
            break;  
        case BaseResp.ErrCode.ERR_AUTH_DENIED:  
            //分享拒绝  
            break;  
        }  
    }  
}  

六、配置清单文件AndroidManifest.xml 

<activity    
    android:name=".wxapi.WXEntryActivity"  
    android:exported="true"  
    android:screenOrientation="portrait"   
    android:theme="@android:style/Theme.Translucent.NoTitleBar" />  

七、签名打包软件，然后可以测试了

/**
     * 微信分享
     *
     * @param flag(0:分享到微信好友，1：分享到微信朋友圈)
     */
    private void weChatShare(final int flag) {


        if (wxAPI != null && !wxAPI.isWXAppInstalled()) {
            AppUtils.showToast(mActivity, "您还未安装微信客户端呢");
            return;
        }
        ImageLoader.getInstance().loadImage(shareImageLink.replace("@100Q.jpg", "@100w_100h_1e_100Q.jpg|100x100-2rc.jpg"), new SimpleImageLoadingListener() {
            @Override
            public void onLoadingComplete(String imageUri, View view, Bitmap loadedImage) {
                super.onLoadingComplete(imageUri, view, loadedImage);

                WXWebpageObject webpage = new WXWebpageObject();
                webpage.webpageUrl = shareUrlLink;

                WXMediaMessage msg = new WXMediaMessage(webpage);
                msg.title = shareTitle;
                msg.description = shareContent;
                //这里替换一张自己工程里的图片资源
                Bitmap thumb = loadedImage;
                msg.setThumbImage(thumb);
                SendMessageToWX.Req req = new SendMessageToWX.Req();
                req.transaction = String.valueOf(System.currentTimeMillis());
                req.message = msg;
                req.scene = flag == 0 ? SendMessageToWX.Req.WXSceneSession : SendMessageToWX.Req.WXSceneTimeline;
                wxAPI.sendReq(req);

                Log.e("Share", shareContent + shareTitle + shareUrlLink);
            }
        });
    }

-------------------------------------------------------------------------------登陆-----------------------------------------------------------------------------------------

 //Login start：
　　　　　　　IWXAPI WXAPI = WXAPIFactory.createWXAPI(this, AppConstants.KEY_WEIXIN_APP_ID, true);
            WXAPI.registerApp(AppConstants.KEY_WEIXIN_APP_ID);
            SendAuth.Req req = new SendAuth.Req();
            req.scope = "snsapi_userinfo";
            req.state = "wechat_sdk_demo";
            WXAPI.sendReq(req);

WXEntryActivity

 // IWXAPI 是第三方app和微信通信的openapi接口
    private IWXAPI api;

    private Dialog progressDialog;// loading

    @Override
    public void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        // 通过WXAPIFactory工厂，获取IWXAPI的实例
        api = WXAPIFactory.createWXAPI(this, AppConstants.KEY_WEIXIN_APP_ID, true);
        api.registerApp(AppConstants.KEY_WEIXIN_APP_ID);
        api.handleIntent(getIntent(), this);

    }

    @Override
    protected void onNewIntent(Intent intent) {
        super.onNewIntent(intent);

        setIntent(intent);
        api.handleIntent(intent, this);
    }

    // 微信发送请求到第三方应用时，会回调到该方法
    @Override
    public void onReq(BaseReq req) {
        switch (req.getType()) {
            case ConstantsAPI.COMMAND_GETMESSAGE_FROM_WX:
//                goToGetMsg();
                break;
            case ConstantsAPI.COMMAND_SHOWMESSAGE_FROM_WX:
//                goToShowMsg((ShowMessageFromWX.Req) req);
                break;
            default:
                break;
        }
    }

public void onResp(BaseResp resp) {

        switch (resp.getType()) {
            case ConstantsAPI.COMMAND_SENDAUTH:
                String result = null;
                SendAuth.Resp sendResp = (SendAuth.Resp) resp;
                if (sendResp.code != null&& !sendResp.code.equals("")) {
                    WeiXinToken weiXinToken = new WeiXinToken(this);
                    HashMap<String, String> params = new HashMap<String, String>();
                    params.put("appid", Constants.APP_ID);
                    params.put("secret", Constants.App_Key);
                    params.put("code", sendResp.code);
                    params.put("grant_type", "authorization_code");
                    weiXinToken.getToken(params);
          
                }

                switch (resp.errCode) {
                    case BaseResp.ErrCode.ERR_OK:
                        result = "登录成功";
                        break;
                    case BaseResp.ErrCode.ERR_USER_CANCEL:
                        result = "用户取消";
                        break;
                    case BaseResp.ErrCode.ERR_AUTH_DENIED:
                        result = "登录失败";
                        break;
                    default:
                        result = "未知错误";
                        break;
                }

                Toast.makeText(this, result, Toast.LENGTH_SHORT).show();
                finish();
                break;

            case ConstantsAPI.COMMAND_SENDMESSAGE_TO_WX:
                String result2 = null;

                switch (resp.errCode) {
                    case BaseResp.ErrCode.ERR_OK:
                        result2 = "分享成功";
                        break;
                    case BaseResp.ErrCode.ERR_USER_CANCEL:
                        result2 = "用户取消";
                        break;
                    case BaseResp.ErrCode.ERR_AUTH_DENIED:
                        result2 = "分享失败";
                        break;
                    default:
                        result2 = "未知错误";
                        break;
                }

                Toast.makeText(this, result2, Toast.LENGTH_SHORT).show();
                finish();
                break;

            default:
                break;
        }
    }

    private void getAccessTokenFromWeiXin(String code) {
        //https://api.weixin.qq.com/sns/oauth2/access_token?appid=APPID&secret=SECRET&code=CODE&grant_type=authorization_code

        String requestUrlAppId = "https://api.weixin.qq.com/sns/oauth2/access_token?appid=" + AppConstants.KEY_WEIXIN_APP_ID;
        String requestUrlAppSecret = "&secret=" + AppConstants.KEY_WEIXIN_APP_SECRET;
        String requestUrlCode = "&code=" + code;
        String requestUrlLast = "&grant_type=authorization_code";

        String requestUrl = requestUrlAppId + requestUrlAppSecret + requestUrlCode + requestUrlLast;

        HttpUtil.get(requestUrl, null, new AsyncHttpResponseHandler() {
            @Override
            public void onSuccess(int statusCode, Header[] headers, String content) {
                JSONObject jsonObject = null;
                try {
                    jsonObject = new JSONObject(content);
                    if (jsonObject.has("access_token") && jsonObject.has("openid")) {
                        String access_token = jsonObject.getString("access_token");
                        String openid = jsonObject.getString("openid");
                        getUserInfoFromWeiXin(access_token, openid);
                    } else {
                        AppUtils.showToast(WXEntryActivity.this, "授权失败");
                    }
                } catch (Exception e) {
                    e.printStackTrace();
                }
            }

            @Override
            public void onFailure(int statusCode, Header[] headers, String responseBody, Throwable error) {
                AppUtils.showToast(WXEntryActivity.this, "请求失败，请检查网络重试");
            }

        });
    }

    //https://open.weixin.qq.com/cgi-bin/frame?t=resource/res_main_tmpl&verify=1&lang=zh_CN

    //            "openid":"OPENID",
//            "nickname":"NICKNAME",
//            "sex":1,
//            "province":"PROVINCE",
//            "city":"CITY",
//            "country":"COUNTRY",
//            "headimgurl": "http://wx.qlogo.cn/mmopen/g3MonUZtNHkdmzicIlibx6iaFqAc56vxLSUfpb6n5WKSYVY0ChQKkiaJSgQ1dZuTOgvLLrhJbERQQ4eMsv84eavHiaiceqxibJxCfHe/0",
//            "privilege":[
//            "PRIVILEGE1",
//            "PRIVILEGE2"
//            ],
//            "unionid": " o6_bmasdasdsad6_2sgVt7hMZOPfL"
    private void getUserInfoFromWeiXin(String token, String openid) {
        //https://api.weixin.qq.com/sns/userinfo?access_token=ACCESS_TOKEN&openid=OPENID
        String requestUrl = "https://api.weixin.qq.com/sns/userinfo?access_token=" + token + "&openid=" + openid;
        HttpUtil.get(requestUrl, null, new AsyncHttpResponseHandler() {
            @Override
            public void onSuccess(int statusCode, Header[] headers, String content) {
                JSONObject jsonObject = null;
                try {
                    jsonObject = new JSONObject(content);
                    if (jsonObject.has("nickname")) {
                        String openid = jsonObject.getString("openid");
                        String nickname = jsonObject.getString("nickname");
                        String sex = jsonObject.getString("sex");
                        String province = jsonObject.getString("province");
                        String city = jsonObject.getString("city");
                        String country = jsonObject.getString("country");
                        String headimgurl = jsonObject.getString("headimgurl");
                        String privilege = jsonObject.getString("privilege");
                        String unionid = jsonObject.getString("unionid");
                        postUserInfo2CBServer(unionid, sex, headimgurl, nickname, country, province, city);
                    } else {
                        AppUtils.showToast(WXEntryActivity.this, "授权失败");
                    }
                } catch (Exception e) {
                    e.printStackTrace();
                }
            }


            @Override
            public void onFailure(int statusCode, Header[] headers, String errorResponse, Throwable e) {
                AppUtils.showToast(WXEntryActivity.this, "请求失败，请检查网络重试");
            }
        });
    }