How to use the antd-mobile.Toast.show function in antd-mobile

handleSubmit = e => {
    e.preventDefault();
    const { username, password } = this.state.form;
    const { dispatch } = this.props;
    if (!username) {
      Toast.show('请输入用户名');
      return;
    }
    if (!password) {
      Toast.show('请输入密码');
      return;
    }
    Toast.loading('登录中...', 0);
    // ajax
    AjaxLogin(this.state.form)
      .then(res => {
        if (res && res.code === 1) {
          let user = res.data;
          // dispatch
          dispatch(setUser(user));
          // set cookie
          let expiresTime = new Date(new Date().getTime() + 2 * 60 * 60 * 1000); //2h

handleSubmit = e => {
    e.preventDefault();
    const { username, password } = this.state.form;
    const { dispatch } = this.props;
    if (!username) {
      Toast.show('请输入用户名');
      return;
    }
    if (!password) {
      Toast.show('请输入密码');
      return;
    }
    Toast.loading('登录中...', 0);
    // ajax
    AjaxLogin(this.state.form)
      .then(res => {
        if (res && res.code === 1) {
          let user = res.data;
          // dispatch
          dispatch(setUser(user));
          // set cookie
          let expiresTime = new Date(new Date().getTime() + 2 * 60 * 60 * 1000); //2h
          Cookie.set('token', user.token, { expires: expiresTime });
          Cookie.set('username', user.username);
          Toast.info('登录成功', 1, this.props.history.goBack());
        }

                <h4> Toast.show(house.model)}&gt;{house.model}</h4>
              ) : (

onBackPress = () => {
    const { dispatch, nav } = this.props
    if (nav.routes[0].index === 0) {
      if (this.lastBackPressed && this.lastBackPressed + 2000 >= Date.now()) {
        BackHandler.exitApp()
        return true
      }
      this.lastBackPressed = Date.now()
      Toast.show('再按一次退出应用')
      return true
    } else {
      dispatch(NavigationActions.back())
      return true
    }
  }

                  <span> Toast.show('暂无')}&gt;电话</span>
                )}

         Toast.show('click')}>国庆期间余额宝收益和转出到账时间

error => {
    if (error.message === 'Request failed with status code 500') {
      Toast.show('服务器出错');
    } else {
      Toast.show(error.message);
    }
    return Promise.reject(error);
  }
);

          this.setState({ isLike: !isLike }, () => Toast.show(res.msg, 1));
        }

error => {
    if (error.message === 'Request failed with status code 500') {
      Toast.show('服务器出错');
    } else {
      Toast.show(error.message);
    }
    return Promise.reject(error);
  }
);

UserLikeHouse(tid, true).then(res => {
      if (res && res.code) {
        Toast.show(res.msg, 1);
        this.updateList(tid);
      }
    });
  };