当我发布到 MYSQL 时，Flutter API 给出错误

Question

我尝试使用 MYSQL 和 PHP 登录，当我输入以下代码时？ url 突出显示并显示 参数类型“String”不能分配给参数类型“Uri”。

Future login() async {
        var url = "https://12.12.12.21/api/login.php";
        var response = await http.post(url, body: {
          "username":  _email,
          "password": _password,
        });

Answer 1

Future login() async {
            var url = Uri.parse("https://12.12.12.21/api/login.php");
            var response = await http.post(url, body: {
              "username":  _email,
              "password": _password,
            });