android调用微信小程序进行支付后，小程序无法返回app

@JavascriptInterface
public void startWxMini(String appId,String originalId,String path) {
    IWXAPI api = WXAPIFactory.createWXAPI(this, appId);
    WXLaunchMiniProgram.Req req = new WXLaunchMiniProgram.Req();
    req.userName = originalId;
    req.path = path;
    req.miniprogramType = WXLaunchMiniProgram.Req.MINIPTOGRAM_TYPE_RELEASE;
    api.sendReq(req);
}

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