javascript - 如果我希望用户和管理员登录后显示不同的布局，我该怎么办？

Question

我的移动应用程序有两种帐户类型的用户，即管理员和用户。如果我希望用户和管理员登录后显示不同的布局，该怎么办？这是我的登录 Activity 。有人可以帮助我吗？我是初学者。谢谢。或者任何人有任何指导初学者执行这些操作的链接也可以将其发布在此处。非常感谢大家。

@Override
protected void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    setContentView(R.layout.activity_login);
    connectionClass = new ConnectionClass();
    edtuserid = (EditText) findViewById(R.id.edtuserid);
    edtpass = (EditText) findViewById(R.id.edtpass);
    btnlogin = (Button) findViewById(R.id.btnlogin);
    pbbar = (ProgressBar) findViewById(R.id.pbbar);
    pbbar.setVisibility(View.GONE);

    shp = this.getSharedPreferences("UserInfo", MODE_PRIVATE);

    String userid = shp.getString("UserId", "none");

    if (userid.equals("none") || userid.trim().equals("")) {

    } else {

        Intent i = new Intent(LoginActivity.this, MainActivity.class);
        startActivity(i);
        finish();

    }


    btnlogin.setOnClickListener(new View.OnClickListener() {
        @Override
        public void onClick(View v) {
            DoLogin doLogin = new DoLogin();
            doLogin.execute("");
        }
    });

}

public class DoLogin extends AsyncTask<String,String,String>
{
    String z = "";
    Boolean isSuccess = false;
    String userid = edtuserid.getText().toString();
    String password = edtpass.getText().toString();

    @Override
    protected void onPreExecute() {
        pbbar.setVisibility(View.VISIBLE);
    }

    @Override
    protected void onPostExecute(String r) {
        pbbar.setVisibility(View.GONE);
        Toast.makeText(LoginActivity.this,r,Toast.LENGTH_SHORT).show();
        if(isSuccess) {
            Intent i = new Intent(LoginActivity.this, MainActivity.class);
            startActivity(i);
            finish();
        }
    }

    @Override
    protected String doInBackground(String... params) {
        if(userid.trim().equals("")|| password.trim().equals(""))
            z = "Please enter User Id and Password";
        else
        {
            try {
                Connection con = connectionClass.CONN();
                if (con == null) {
                    z = "Error in connection with SQL server";
                } else {
                    String query = "select * from dbo.demo where UserId='" + userid + "' and Password='" + password + "'";
                    Statement stmt = con.createStatement();
                    ResultSet rs = stmt.executeQuery(query);

                    if(rs.next())
                    {

                        z = "Login successfull";
                        isSuccess=true;
                    }
                    else
                    {
                        z = "Invalid Credentials";
                        isSuccess = false;
                    }

                }
            }
            catch (Exception ex)
            {
                isSuccess = false;
                z = "Exceptions";
            }
        }
        return z;
    }
}

Answer 1

我做过一次这样的项目。为了解决这个登录问题，我们在数据库中添加了一个列作为“ Angular 色”，其中包含管理员、用户等 Angular 色。为管理员和用户创建2个不同的页面。检查登录凭据后，还检查 Angular 色，然后进行相应的重定向。