android跳转到微信小程序

案例代码：

 private IWXAPI api;
 api = WXAPIFactory.createWXAPI(getContext(), "wx************");//appID

 String userName =  uri.getQueryParameter("appid");//原始ID
        String path = uri.getQueryParameter("path");//路径

        final WXLaunchMiniProgram.Req req = new WXLaunchMiniProgram.Req();
        req.userName = userName;
        req.path = path;

        itemView.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View v) {
                api.sendReq(req);
            }
        });

添加依赖：

  compile 'com.tencent.mm.opensdk:wechat-sdk-android-without-mta:+'

微信开放平台： https://open.weixin.qq.com/cgi-bin/showdocument?action=dir_list&t=resource/res_list&verify=1&id=21526646437Y6nEC&token=&lang=zh_CN