//初始化一个WXWebpageObject，填写url
WXWebpageObject webpage = new WXWebpageObject();
webpage.webpageUrl = "https://www.qq.com";

//用 WXWebpageObject 对象初始化一个 WXMediaMessage 对象
WXMediaMessage msg = new WXMediaMessage(webpage);
msg.title = "网页标题 ";
msg.description = "网页描述";
Bitmap thumbBmp = BitmapFactory.decodeResource(context.getResources(), R.mipmap.logo_we_county);
msg.thumbData = Util.bmpToByteArray(thumbBmp, true);

//构造一个Req
SendMessageToWX.Req req = new SendMessageToWX.Req();
req.transaction = Constants.WE_COUNTY_VILLAGE_CARD;
req.message = msg;
req.scene = shareType;
req.userOpenId = Constants.WECHAT_APP_ID;

//调用api接口，发送数据到微信
api.sendReq(req);

@Override
public void onResp(BaseResp baseResp) {
    MyLog.e(TAG, "baseResp.errCode = " + baseResp.errCode);
    MyLog.e(TAG, "baseResp.errStr = " + baseResp.errStr);
    MyLog.e(TAG, "baseResp.transaction = " + baseResp.transaction);
    MyLog.e(TAG, "baseResp.openId = " + baseResp.openId);
    MyLog.e(TAG + " onResp", "baseResp.getType() = " + baseResp.getType());

    if (Constants.WE_COUNTY_VILLAGE_CARD.equals(baseResp.transaction)) {
        //家乡名片分享回调
        switch (baseResp.errCode) {
            case BaseResp.ErrCode.ERR_OK:
               （调起微信分享后，没有分享，直接按返回键，回调到了这里）
                ToastUtil.shortToast("分享成功");
                Message message = Message.obtain();
                message.what = Constants.SHARE_SUCCESS;
                BaseActivity.sendMsg(message);
                finish();
                break;
            case BaseResp.ErrCode.ERR_AUTH_DENIED://用户拒绝授权
                ToastUtil.shortToast("分享被拒绝");
                finish();
                break;
            case BaseResp.ErrCode.ERR_USER_CANCEL://用户取消
                ToastUtil.shortToast("分享取消");
                finish();
                break;
            default:
                finish();
                break;
        }
        return;
    }
}