api = WXAPIFactory.createWXAPI(SendToWXActivity.this, "wxa8f99e190675abc0",false);
                     WXLaunchMiniProgram.Req req = new WXLaunchMiniProgram.Req();
                     req.userName = "gh_d86b1fb84d93";
                     req.path = "pages/jump-pay/index?type=temp&orderId=1561533701832306690&userId=";
                     req.miniprogramType = WXLaunchMiniProgram.Req.MINIPTOGRAM_TYPE_RELEASE;
api.sendReq(req);

<button open-type="launchApp" app-parameter="wechat"  >退出</button>

以上代码为androido调用小程序代码和小程序关闭返回app代码。

目前app可以调起小程序，但是小程序点击来返回按钮，无法返回app